Port St Johns weather by month

Check out Port St Johns weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature in Port St Johns (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
25°C maximum daytime temperature in January in Port St Johns25
25°C maximum daytime temperature in February in Port St Johns25
25°C maximum daytime temperature in March in Port St Johns25
24°C maximum daytime temperature in April in Port St Johns24
23°C maximum daytime temperature in May in Port St Johns23
22°C maximum daytime temperature in June in Port St Johns22
21°C maximum daytime temperature in July in Port St Johns21
21°C maximum daytime temperature in August in Port St Johns21
21°C maximum daytime temperature in September in Port St Johns21
22°C maximum daytime temperature in October in Port St Johns22
23°C maximum daytime temperature in November in Port St Johns23
24°C maximum daytime temperature in December in Port St Johns24
Min temperature (night-time)
19°C minimum night-time temperature in January in Port St Johns19
19°C minimum night-time temperature in February in Port St Johns19
19°C minimum night-time temperature in March in Port St Johns19
17°C minimum night-time temperature in April in Port St Johns17
15°C minimum night-time temperature in May in Port St Johns15
13°C minimum night-time temperature in June in Port St Johns13
12°C minimum night-time temperature in July in Port St Johns12
13°C minimum night-time temperature in August in Port St Johns13
14°C minimum night-time temperature in September in Port St Johns14
15°C minimum night-time temperature in October in Port St Johns15
17°C minimum night-time temperature in November in Port St Johns17
18°C minimum night-time temperature in December in Port St Johns18
Heat & Humidity
Low heat & humidity in January in Port St JohnsL
Low heat & humidity in February in Port St JohnsL
Low heat & humidity in March in Port St JohnsL
No heat & humidity in April in Port St Johns0
No heat & humidity in May in Port St Johns0
No heat & humidity in June in Port St Johns0
No heat & humidity in July in Port St Johns0
No heat & humidity in August in Port St Johns0
No heat & humidity in September in Port St Johns0
No heat & humidity in October in Port St Johns0
No heat & humidity in November in Port St Johns0
Low heat & humidity in December in Port St JohnsL
Sea temperature
25°C sea temperature in January in Port St Johns25
26°C sea temperature in February in Port St Johns26
26°C sea temperature in March in Port St Johns26
25°C sea temperature in April in Port St Johns25
23°C sea temperature in May in Port St Johns23
22°C sea temperature in June in Port St Johns22
21°C sea temperature in July in Port St Johns21
21°C sea temperature in August in Port St Johns21
21°C sea temperature in September in Port St Johns21
21°C sea temperature in October in Port St Johns21
23°C sea temperature in November in Port St Johns23
24°C sea temperature in December in Port St Johns24

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & UV index in Port St Johns

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
14 hours of daylight per day in January in Port St Johns14
13 hours of daylight per day in February in Port St Johns13
12 hours of daylight per day in March in Port St Johns12
11 hours of daylight per day in April in Port St Johns11
11 hours of daylight per day in May in Port St Johns11
10 hours of daylight per day in June in Port St Johns10
10 hours of daylight per day in July in Port St Johns10
11 hours of daylight per day in August in Port St Johns11
12 hours of daylight per day in September in Port St Johns12
13 hours of daylight per day in October in Port St Johns13
14 hours of daylight per day in November in Port St Johns14
14 hours of daylight per day in December in Port St Johns14
UV Index (Maximum)
UV (maximum) index 11+ (Extreme) in January in Port St Johns11
UV (maximum) index 11+ (Extreme) in February in Port St Johns11
UV (maximum) index 10 (Very High) in March in Port St Johns10
UV (maximum) index 6 (High) in April in Port St Johns6
UV (maximum) index 4 (Moderate) in May in Port St Johns4
UV (maximum) index 3 (Moderate) in June in Port St Johns3
UV (maximum) index 3 (Moderate) in July in Port St Johns3
UV (maximum) index 5 (Moderate) in August in Port St Johns5
UV (maximum) index 7 (High) in September in Port St Johns7
UV (maximum) index 9 (Very High) in October in Port St Johns9
UV (maximum) index 11 (Extreme) in November in Port St Johns11
UV (maximum) index 11+ (Extreme) in December in Port St Johns11

Rainfall in Port St Johns

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
15 days with some rainfall in January in Port St Johns15
13 days with some rainfall in February in Port St Johns13
13 days with some rainfall in March in Port St Johns13
9 days with some rainfall in April in Port St Johns9
6 days with some rainfall in May in Port St Johns6
4 days with some rainfall in June in Port St Johns4
5 days with some rainfall in July in Port St Johns5
6 days with some rainfall in August in Port St Johns6
10 days with some rainfall in September in Port St Johns10
14 days with some rainfall in October in Port St Johns14
15 days with some rainfall in November in Port St Johns15
14 days with some rainfall in December in Port St Johns14
Average monthly rainfall (mm)
113 mm monthly rainfall in January in Port St Johns113
116 mm monthly rainfall in February in Port St Johns116
128 mm monthly rainfall in March in Port St Johns128
84 mm monthly rainfall in April in Port St Johns84
58 mm monthly rainfall in May in Port St Johns58
34 mm monthly rainfall in June in Port St Johns34
41 mm monthly rainfall in July in Port St Johns41
49 mm monthly rainfall in August in Port St Johns49
77 mm monthly rainfall in September in Port St Johns77
103 mm monthly rainfall in October in Port St Johns103
122 mm monthly rainfall in November in Port St Johns122
104 mm monthly rainfall in December in Port St Johns104

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Port St Johns by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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The climate guide for South Africa (Port St Johns) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

What's the climate like in Port St Johns?

Port St Johns has a temperate climate with hot summers and some rainfall in all months.

Port St Johns weather in January

Expect daytime maximum temperatures of 25°C in Port St Johns, South Africa in January based on long-term weather averages. There are 7 hours of sunshine per day on average with 15 days with some rainfall and typically 113 mm of rainfall in the month.

  • 25°C maximum daytime temperature in January in Port St Johns25
    25°C max day temperature
  • 7 hours of sunshine per day
  • 15 days with some rainfall in January in Port St Johns15
    15 days with some rainfall
  • 19°C minimum night-time temperature in January in Port St Johns19
    19°C min night temperature
  • 14 hours of daylight per day in January in Port St Johns14
    14 hours of daylight per day
  • Low heat & humidity in January in Port St JohnsL
    Low heat & humidity
  • 113 mm monthly rainfall in January in Port St Johns113
    113 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in January in Port St Johns11
    11+ (Extreme) UV index
  • 25°C sea temperature in January in Port St Johns25
    25°C sea temperature

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Port St Johns weather in February

Expect daytime maximum temperatures of 25°C in Port St Johns, South Africa in February based on long-term weather averages. There are 7 hours of sunshine per day on average with 13 days with some rainfall and typically 116 mm of rainfall in the month.

  • 25°C maximum daytime temperature in February in Port St Johns25
    25°C max day temperature
  • 7 hours of sunshine per day
  • 13 days with some rainfall in February in Port St Johns13
    13 days with some rainfall
  • 19°C minimum night-time temperature in February in Port St Johns19
    19°C min night temperature
  • 13 hours of daylight per day in February in Port St Johns13
    13 hours of daylight per day
  • Low heat & humidity in February in Port St JohnsL
    Low heat & humidity
  • 116 mm monthly rainfall in February in Port St Johns116
    116 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in February in Port St Johns11
    11+ (Extreme) UV index
  • 26°C sea temperature in February in Port St Johns26
    26°C sea temperature

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Port St Johns weather in March

Expect daytime maximum temperatures of 25°C in Port St Johns, South Africa in March based on long-term weather averages. There are 7 hours of sunshine per day on average with 13 days with some rainfall and typically 128 mm of rainfall in the month.

  • 25°C maximum daytime temperature in March in Port St Johns25
    25°C max day temperature
  • 7 hours of sunshine per day
  • 13 days with some rainfall in March in Port St Johns13
    13 days with some rainfall
  • 19°C minimum night-time temperature in March in Port St Johns19
    19°C min night temperature
  • 12 hours of daylight per day in March in Port St Johns12
    12 hours of daylight per day
  • Low heat & humidity in March in Port St JohnsL
    Low heat & humidity
  • 128 mm monthly rainfall in March in Port St Johns128
    128 mm of monthly rainfall
  • UV (maximum) index 10 (Very High) in March in Port St Johns10
    10 (Very High) UV index
  • 26°C sea temperature in March in Port St Johns26
    26°C sea temperature

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Port St Johns weather in April

Expect daytime maximum temperatures of 24°C in Port St Johns, South Africa in April based on long-term weather averages. There are 7 hours of sunshine per day on average with typically 84 mm of rainfall in the month.

  • 24°C maximum daytime temperature in April in Port St Johns24
    24°C max day temperature
  • 7 hours of sunshine per day
  • 9 days with some rainfall in April in Port St Johns9
    9 days with some rainfall
  • 17°C minimum night-time temperature in April in Port St Johns17
    17°C min night temperature
  • 11 hours of daylight per day in April in Port St Johns11
    11 hours of daylight per day
  • No heat & humidity in April in Port St Johns0
    No heat & humidity
  • 84 mm monthly rainfall in April in Port St Johns84
    84 mm of monthly rainfall
  • UV (maximum) index 6 (High) in April in Port St Johns6
    6 (High) UV index
  • 25°C sea temperature in April in Port St Johns25
    25°C sea temperature

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Port St Johns weather in May

Expect daytime maximum temperatures of 23°C in Port St Johns, South Africa in May based on long-term weather averages. There are 7 hours of sunshine per day on average with typically 58 mm of rainfall in the month.

  • 23°C maximum daytime temperature in May in Port St Johns23
    23°C max day temperature
  • 7 hours of sunshine per day
  • 6 days with some rainfall in May in Port St Johns6
    6 days with some rainfall
  • 15°C minimum night-time temperature in May in Port St Johns15
    15°C min night temperature
  • 11 hours of daylight per day in May in Port St Johns11
    11 hours of daylight per day
  • No heat & humidity in May in Port St Johns0
    No heat & humidity
  • 58 mm monthly rainfall in May in Port St Johns58
    58 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in May in Port St Johns4
    4 (Moderate) UV index
  • 23°C sea temperature in May in Port St Johns23
    23°C sea temperature

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Port St Johns weather in June

Expect daytime maximum temperatures of 22°C in Port St Johns, South Africa in June based on long-term weather averages. There are 7 hours of sunshine per day on average.

  • 22°C maximum daytime temperature in June in Port St Johns22
    22°C max day temperature
  • 7 hours of sunshine per day
  • 4 days with some rainfall in June in Port St Johns4
    4 days with some rainfall
  • 13°C minimum night-time temperature in June in Port St Johns13
    13°C min night temperature
  • 10 hours of daylight per day in June in Port St Johns10
    10 hours of daylight per day
  • No heat & humidity in June in Port St Johns0
    No heat & humidity
  • 34 mm monthly rainfall in June in Port St Johns34
    34 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in June in Port St Johns3
    3 (Moderate) UV index
  • 22°C sea temperature in June in Port St Johns22
    22°C sea temperature

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Port St Johns weather in July

Expect daytime maximum temperatures of 21°C in Port St Johns, South Africa in July based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 41 mm of rainfall in the month.

  • 21°C maximum daytime temperature in July in Port St Johns21
    21°C max day temperature
  • 8 hours of sunshine per day
  • 5 days with some rainfall in July in Port St Johns5
    5 days with some rainfall
  • 12°C minimum night-time temperature in July in Port St Johns12
    12°C min night temperature
  • 10 hours of daylight per day in July in Port St Johns10
    10 hours of daylight per day
  • No heat & humidity in July in Port St Johns0
    No heat & humidity
  • 41 mm monthly rainfall in July in Port St Johns41
    41 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in July in Port St Johns3
    3 (Moderate) UV index
  • 21°C sea temperature in July in Port St Johns21
    21°C sea temperature

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Port St Johns weather in August

Expect daytime maximum temperatures of 21°C in Port St Johns, South Africa in August based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 49 mm of rainfall in the month.

  • 21°C maximum daytime temperature in August in Port St Johns21
    21°C max day temperature
  • 8 hours of sunshine per day
  • 6 days with some rainfall in August in Port St Johns6
    6 days with some rainfall
  • 13°C minimum night-time temperature in August in Port St Johns13
    13°C min night temperature
  • 11 hours of daylight per day in August in Port St Johns11
    11 hours of daylight per day
  • No heat & humidity in August in Port St Johns0
    No heat & humidity
  • 49 mm monthly rainfall in August in Port St Johns49
    49 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in August in Port St Johns5
    5 (Moderate) UV index
  • 21°C sea temperature in August in Port St Johns21
    21°C sea temperature

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Port St Johns weather in September

Expect daytime maximum temperatures of 21°C in Port St Johns, South Africa in September based on long-term weather averages. There are 7 hours of sunshine per day on average with 10 days with some rainfall and typically 77 mm of rainfall in the month.

  • 21°C maximum daytime temperature in September in Port St Johns21
    21°C max day temperature
  • 7 hours of sunshine per day
  • 10 days with some rainfall in September in Port St Johns10
    10 days with some rainfall
  • 14°C minimum night-time temperature in September in Port St Johns14
    14°C min night temperature
  • 12 hours of daylight per day in September in Port St Johns12
    12 hours of daylight per day
  • No heat & humidity in September in Port St Johns0
    No heat & humidity
  • 77 mm monthly rainfall in September in Port St Johns77
    77 mm of monthly rainfall
  • UV (maximum) index 7 (High) in September in Port St Johns7
    7 (High) UV index
  • 21°C sea temperature in September in Port St Johns21
    21°C sea temperature

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Port St Johns weather in October

Expect daytime maximum temperatures of 22°C in Port St Johns, South Africa in October based on long-term weather averages. There are 7 hours of sunshine per day on average with 14 days with some rainfall and typically 103 mm of rainfall in the month.

  • 22°C maximum daytime temperature in October in Port St Johns22
    22°C max day temperature
  • 7 hours of sunshine per day
  • 14 days with some rainfall in October in Port St Johns14
    14 days with some rainfall
  • 15°C minimum night-time temperature in October in Port St Johns15
    15°C min night temperature
  • 13 hours of daylight per day in October in Port St Johns13
    13 hours of daylight per day
  • No heat & humidity in October in Port St Johns0
    No heat & humidity
  • 103 mm monthly rainfall in October in Port St Johns103
    103 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in October in Port St Johns9
    9 (Very High) UV index
  • 21°C sea temperature in October in Port St Johns21
    21°C sea temperature

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Port St Johns weather in November

Expect daytime maximum temperatures of 23°C in Port St Johns, South Africa in November based on long-term weather averages. There are 7 hours of sunshine per day on average with 15 days with some rainfall and typically 122 mm of rainfall in the month.

  • 23°C maximum daytime temperature in November in Port St Johns23
    23°C max day temperature
  • 7 hours of sunshine per day
  • 15 days with some rainfall in November in Port St Johns15
    15 days with some rainfall
  • 17°C minimum night-time temperature in November in Port St Johns17
    17°C min night temperature
  • 14 hours of daylight per day in November in Port St Johns14
    14 hours of daylight per day
  • No heat & humidity in November in Port St Johns0
    No heat & humidity
  • 122 mm monthly rainfall in November in Port St Johns122
    122 mm of monthly rainfall
  • UV (maximum) index 11 (Extreme) in November in Port St Johns11
    11 (Extreme) UV index
  • 23°C sea temperature in November in Port St Johns23
    23°C sea temperature

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Port St Johns weather in December

Expect daytime maximum temperatures of 24°C in Port St Johns, South Africa in December based on long-term weather averages. There are 7 hours of sunshine per day on average with 14 days with some rainfall and typically 104 mm of rainfall in the month.

  • 24°C maximum daytime temperature in December in Port St Johns24
    24°C max day temperature
  • 7 hours of sunshine per day
  • 14 days with some rainfall in December in Port St Johns14
    14 days with some rainfall
  • 18°C minimum night-time temperature in December in Port St Johns18
    18°C min night temperature
  • 14 hours of daylight per day in December in Port St Johns14
    14 hours of daylight per day
  • Low heat & humidity in December in Port St JohnsL
    Low heat & humidity
  • 104 mm monthly rainfall in December in Port St Johns104
    104 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in December in Port St Johns11
    11+ (Extreme) UV index
  • 24°C sea temperature in December in Port St Johns24
    24°C sea temperature

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More about Port St Johns

Port St Johns by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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The climate guide for South Africa (Port St Johns) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Compare Port St Johns weather with the UK

The weather chart below compares the average monthly maximum daytime temperature for Port St Johns, South Africa and the UK (London).

Maximum daytime temperature (°C)

Port St Johns, South Africa
UK (London)
25
7
25
7
25
10
24
13
23
17
22
20
21
22
21
22
21
19
22
15
23
10
24
8
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C / mm)  |  Imperial (°F / inches)

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