St Lucia weather by month

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

Temperature in St Lucia (°F)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
84°F maximum daytime temperature in January in St Lucia84
84°F maximum daytime temperature in February in St Lucia84
84°F maximum daytime temperature in March in St Lucia84
81°F maximum daytime temperature in April in St Lucia81
77°F maximum daytime temperature in May in St Lucia77
73°F maximum daytime temperature in June in St Lucia73
73°F maximum daytime temperature in July in St Lucia73
75°F maximum daytime temperature in August in St Lucia75
75°F maximum daytime temperature in September in St Lucia75
77°F maximum daytime temperature in October in St Lucia77
79°F maximum daytime temperature in November in St Lucia79
82°F maximum daytime temperature in December in St Lucia82
Min temperature (night-time)
70°F minimum night-time temperature in January in St Lucia70
70°F minimum night-time temperature in February in St Lucia70
70°F minimum night-time temperature in March in St Lucia70
64°F minimum night-time temperature in April in St Lucia64
61°F minimum night-time temperature in May in St Lucia61
55°F minimum night-time temperature in June in St Lucia55
55°F minimum night-time temperature in July in St Lucia55
59°F minimum night-time temperature in August in St Lucia59
61°F minimum night-time temperature in September in St Lucia61
63°F minimum night-time temperature in October in St Lucia63
66°F minimum night-time temperature in November in St Lucia66
68°F minimum night-time temperature in December in St Lucia68
Heat & Humidity
High heat & humidity in January in St LuciaH
High heat & humidity in February in St LuciaH
Moderate heat & humidity in March in St LuciaM
Moderate heat & humidity in April in St LuciaM
Low heat & humidity in May in St LuciaL
No heat & humidity in June in St Lucia0
No heat & humidity in July in St Lucia0
No heat & humidity in August in St Lucia0
No heat & humidity in September in St Lucia0
Low heat & humidity in October in St LuciaL
Low heat & humidity in November in St LuciaL
Moderate heat & humidity in December in St LuciaM
Sea temperature
79°F sea temperature in January in St Lucia79
81°F sea temperature in February in St Lucia81
81°F sea temperature in March in St Lucia81
79°F sea temperature in April in St Lucia79
77°F sea temperature in May in St Lucia77
73°F sea temperature in June in St Lucia73
73°F sea temperature in July in St Lucia73
72°F sea temperature in August in St Lucia72
72°F sea temperature in September in St Lucia72
73°F sea temperature in October in St Lucia73
75°F sea temperature in November in St Lucia75
77°F sea temperature in December in St Lucia77

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

Sunshine & UV index in St Lucia

  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 St Lucia14
13 hours of daylight per day in February in St Lucia13
12 hours of daylight per day in March in St Lucia12
11 hours of daylight per day in April in St Lucia11
11 hours of daylight per day in May in St Lucia11
10 hours of daylight per day in June in St Lucia10
11 hours of daylight per day in July in St Lucia11
11 hours of daylight per day in August in St Lucia11
12 hours of daylight per day in September in St Lucia12
13 hours of daylight per day in October in St Lucia13
14 hours of daylight per day in November in St Lucia14
14 hours of daylight per day in December in St Lucia14
UV Index (Maximum)
UV (maximum) index 11+ (Extreme) in January in St Lucia11
UV (maximum) index 11+ (Extreme) in February in St Lucia11
UV (maximum) index 10 (Very High) in March in St Lucia10
UV (maximum) index 7 (High) in April in St Lucia7
UV (maximum) index 5 (Moderate) in May in St Lucia5
UV (maximum) index 4 (Moderate) in June in St Lucia4
UV (maximum) index 4 (Moderate) in July in St Lucia4
UV (maximum) index 6 (High) in August in St Lucia6
UV (maximum) index 8 (Very High) in September in St Lucia8
UV (maximum) index 10 (Very High) in October in St Lucia10
UV (maximum) index 11+ (Extreme) in November in St Lucia11
UV (maximum) index 11+ (Extreme) in December in St Lucia11

Rainfall in St Lucia

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
12 days with some rainfall in January in St Lucia12
12 days with some rainfall in February in St Lucia12
11 days with some rainfall in March in St Lucia11
9 days with some rainfall in April in St Lucia9
8 days with some rainfall in May in St Lucia8
7 days with some rainfall in June in St Lucia7
7 days with some rainfall in July in St Lucia7
7 days with some rainfall in August in St Lucia7
9 days with some rainfall in September in St Lucia9
12 days with some rainfall in October in St Lucia12
13 days with some rainfall in November in St Lucia13
10 days with some rainfall in December in St Lucia10
Average monthly rainfall (inches)
5.8 inches monthly rainfall in January in St Lucia5.8
5.4 inches monthly rainfall in February in St Lucia5.4
5.1 inches monthly rainfall in March in St Lucia5.1
4.4 inches monthly rainfall in April in St Lucia4.4
3.6 inches monthly rainfall in May in St Lucia3.6
3.3 inches monthly rainfall in June in St Lucia3.3
3.1 inches monthly rainfall in July in St Lucia3.1
2.6 inches monthly rainfall in August in St Lucia2.6
3.4 inches monthly rainfall in September in St Lucia3.4
4.1 inches monthly rainfall in October in St Lucia4.1
4.4 inches monthly rainfall in November in St Lucia4.4
3.6 inches monthly rainfall in December in St Lucia3.6

More about St Lucia

St Lucia by month

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

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The climate guide for South Africa (St Lucia) 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 St Lucia?

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

St Lucia weather in January

Expect daytime maximum temperatures of 84°F in St Lucia, South Africa in January and high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average with 12 days with some rainfall and typically 5.8 inches of rainfall in the month.

  • 84°F maximum daytime temperature in January in St Lucia84
    84°F max day temperature
  • 8 hours of sunshine per day
  • 12 days with some rainfall in January in St Lucia12
    12 days with some rainfall
  • 70°F minimum night-time temperature in January in St Lucia70
    70°F min night temperature
  • 14 hours of daylight per day in January in St Lucia14
    14 hours of daylight per day
  • High heat & humidity in January in St LuciaH
    High heat & humidity
  • 5.8 inches monthly rainfall in January in St Lucia5.8
    5.8 inches of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in January in St Lucia11
    11+ (Extreme) UV index
  • 79°F sea temperature in January in St Lucia79
    79°F sea temperature

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St Lucia weather in February

Expect daytime maximum temperatures of 84°F in St Lucia, South Africa in February and high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average with 12 days with some rainfall and typically 5.4 inches of rainfall in the month.

  • 84°F maximum daytime temperature in February in St Lucia84
    84°F max day temperature
  • 8 hours of sunshine per day
  • 12 days with some rainfall in February in St Lucia12
    12 days with some rainfall
  • 70°F minimum night-time temperature in February in St Lucia70
    70°F min night temperature
  • 13 hours of daylight per day in February in St Lucia13
    13 hours of daylight per day
  • High heat & humidity in February in St LuciaH
    High heat & humidity
  • 5.4 inches monthly rainfall in February in St Lucia5.4
    5.4 inches of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in February in St Lucia11
    11+ (Extreme) UV index
  • 81°F sea temperature in February in St Lucia81
    81°F sea temperature

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St Lucia weather in March

Expect daytime maximum temperatures of 84°F in St Lucia, South Africa in March based on long-term weather averages. There are 8 hours of sunshine per day on average with 11 days with some rainfall and typically 5.1 inches of rainfall in the month.

  • 84°F maximum daytime temperature in March in St Lucia84
    84°F max day temperature
  • 8 hours of sunshine per day
  • 11 days with some rainfall in March in St Lucia11
    11 days with some rainfall
  • 70°F minimum night-time temperature in March in St Lucia70
    70°F min night temperature
  • 12 hours of daylight per day in March in St Lucia12
    12 hours of daylight per day
  • Moderate heat & humidity in March in St LuciaM
    Moderate heat & humidity
  • 5.1 inches monthly rainfall in March in St Lucia5.1
    5.1 inches of monthly rainfall
  • UV (maximum) index 10 (Very High) in March in St Lucia10
    10 (Very High) UV index
  • 81°F sea temperature in March in St Lucia81
    81°F sea temperature

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St Lucia weather in April

Expect daytime maximum temperatures of 81°F in St Lucia, South Africa in April based on long-term weather averages. There are 7 hours of sunshine per day on average with typically 4.4 inches of rainfall in the month.

  • 81°F maximum daytime temperature in April in St Lucia81
    81°F max day temperature
  • 7 hours of sunshine per day
  • 9 days with some rainfall in April in St Lucia9
    9 days with some rainfall
  • 64°F minimum night-time temperature in April in St Lucia64
    64°F min night temperature
  • 11 hours of daylight per day in April in St Lucia11
    11 hours of daylight per day
  • Moderate heat & humidity in April in St LuciaM
    Moderate heat & humidity
  • 4.4 inches monthly rainfall in April in St Lucia4.4
    4.4 inches of monthly rainfall
  • UV (maximum) index 7 (High) in April in St Lucia7
    7 (High) UV index
  • 79°F sea temperature in April in St Lucia79
    79°F sea temperature

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St Lucia weather in May

Expect daytime maximum temperatures of 77°F in St Lucia, South Africa in May based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 3.6 inches of rainfall in the month.

  • 77°F maximum daytime temperature in May in St Lucia77
    77°F max day temperature
  • 8 hours of sunshine per day
  • 8 days with some rainfall in May in St Lucia8
    8 days with some rainfall
  • 61°F minimum night-time temperature in May in St Lucia61
    61°F min night temperature
  • 11 hours of daylight per day in May in St Lucia11
    11 hours of daylight per day
  • Low heat & humidity in May in St LuciaL
    Low heat & humidity
  • 3.6 inches monthly rainfall in May in St Lucia3.6
    3.6 inches of monthly rainfall
  • UV (maximum) index 5 (Moderate) in May in St Lucia5
    5 (Moderate) UV index
  • 77°F sea temperature in May in St Lucia77
    77°F sea temperature

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St Lucia weather in June

Expect daytime maximum temperatures of 73°F in St Lucia, South Africa in June based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 3.3 inches of rainfall in the month.

  • 73°F maximum daytime temperature in June in St Lucia73
    73°F max day temperature
  • 8 hours of sunshine per day
  • 7 days with some rainfall in June in St Lucia7
    7 days with some rainfall
  • 55°F minimum night-time temperature in June in St Lucia55
    55°F min night temperature
  • 10 hours of daylight per day in June in St Lucia10
    10 hours of daylight per day
  • No heat & humidity in June in St Lucia0
    No heat & humidity
  • 3.3 inches monthly rainfall in June in St Lucia3.3
    3.3 inches of monthly rainfall
  • UV (maximum) index 4 (Moderate) in June in St Lucia4
    4 (Moderate) UV index
  • 73°F sea temperature in June in St Lucia73
    73°F sea temperature

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St Lucia weather in July

Expect daytime maximum temperatures of 73°F in St Lucia, South Africa in July based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 3.1 inches of rainfall in the month.

  • 73°F maximum daytime temperature in July in St Lucia73
    73°F max day temperature
  • 8 hours of sunshine per day
  • 7 days with some rainfall in July in St Lucia7
    7 days with some rainfall
  • 55°F minimum night-time temperature in July in St Lucia55
    55°F min night temperature
  • 11 hours of daylight per day in July in St Lucia11
    11 hours of daylight per day
  • No heat & humidity in July in St Lucia0
    No heat & humidity
  • 3.1 inches monthly rainfall in July in St Lucia3.1
    3.1 inches of monthly rainfall
  • UV (maximum) index 4 (Moderate) in July in St Lucia4
    4 (Moderate) UV index
  • 73°F sea temperature in July in St Lucia73
    73°F sea temperature

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St Lucia weather in August

Expect daytime maximum temperatures of 75°F in St Lucia, South Africa in August based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 2.6 inches of rainfall in the month.

  • 75°F maximum daytime temperature in August in St Lucia75
    75°F max day temperature
  • 8 hours of sunshine per day
  • 7 days with some rainfall in August in St Lucia7
    7 days with some rainfall
  • 59°F minimum night-time temperature in August in St Lucia59
    59°F min night temperature
  • 11 hours of daylight per day in August in St Lucia11
    11 hours of daylight per day
  • No heat & humidity in August in St Lucia0
    No heat & humidity
  • 2.6 inches monthly rainfall in August in St Lucia2.6
    2.6 inches of monthly rainfall
  • UV (maximum) index 6 (High) in August in St Lucia6
    6 (High) UV index
  • 72°F sea temperature in August in St Lucia72
    72°F sea temperature

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St Lucia weather in September

Expect daytime maximum temperatures of 75°F in St Lucia, South Africa in September based on long-term weather averages. There are 7 hours of sunshine per day on average with typically 3.4 inches of rainfall in the month.

  • 75°F maximum daytime temperature in September in St Lucia75
    75°F max day temperature
  • 7 hours of sunshine per day
  • 9 days with some rainfall in September in St Lucia9
    9 days with some rainfall
  • 61°F minimum night-time temperature in September in St Lucia61
    61°F min night temperature
  • 12 hours of daylight per day in September in St Lucia12
    12 hours of daylight per day
  • No heat & humidity in September in St Lucia0
    No heat & humidity
  • 3.4 inches monthly rainfall in September in St Lucia3.4
    3.4 inches of monthly rainfall
  • UV (maximum) index 8 (Very High) in September in St Lucia8
    8 (Very High) UV index
  • 72°F sea temperature in September in St Lucia72
    72°F sea temperature

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St Lucia weather in October

Expect daytime maximum temperatures of 77°F in St Lucia, South Africa in October based on long-term weather averages. There are 7 hours of sunshine per day on average with 12 days with some rainfall and typically 4.1 inches of rainfall in the month.

  • 77°F maximum daytime temperature in October in St Lucia77
    77°F max day temperature
  • 7 hours of sunshine per day
  • 12 days with some rainfall in October in St Lucia12
    12 days with some rainfall
  • 63°F minimum night-time temperature in October in St Lucia63
    63°F min night temperature
  • 13 hours of daylight per day in October in St Lucia13
    13 hours of daylight per day
  • Low heat & humidity in October in St LuciaL
    Low heat & humidity
  • 4.1 inches monthly rainfall in October in St Lucia4.1
    4.1 inches of monthly rainfall
  • UV (maximum) index 10 (Very High) in October in St Lucia10
    10 (Very High) UV index
  • 73°F sea temperature in October in St Lucia73
    73°F sea temperature

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St Lucia weather in November

Expect daytime maximum temperatures of 79°F in St Lucia, South Africa in November based on long-term weather averages. There are 7 hours of sunshine per day on average with 13 days with some rainfall and typically 4.4 inches of rainfall in the month.

  • 79°F maximum daytime temperature in November in St Lucia79
    79°F max day temperature
  • 7 hours of sunshine per day
  • 13 days with some rainfall in November in St Lucia13
    13 days with some rainfall
  • 66°F minimum night-time temperature in November in St Lucia66
    66°F min night temperature
  • 14 hours of daylight per day in November in St Lucia14
    14 hours of daylight per day
  • Low heat & humidity in November in St LuciaL
    Low heat & humidity
  • 4.4 inches monthly rainfall in November in St Lucia4.4
    4.4 inches of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in November in St Lucia11
    11+ (Extreme) UV index
  • 75°F sea temperature in November in St Lucia75
    75°F sea temperature

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St Lucia weather in December

Expect daytime maximum temperatures of 82°F in St Lucia, South Africa in December based on long-term weather averages. There are 8 hours of sunshine per day on average with 10 days with some rainfall and typically 3.6 inches of rainfall in the month.

  • 82°F maximum daytime temperature in December in St Lucia82
    82°F max day temperature
  • 8 hours of sunshine per day
  • 10 days with some rainfall in December in St Lucia10
    10 days with some rainfall
  • 68°F minimum night-time temperature in December in St Lucia68
    68°F min night temperature
  • 14 hours of daylight per day in December in St Lucia14
    14 hours of daylight per day
  • Moderate heat & humidity in December in St LuciaM
    Moderate heat & humidity
  • 3.6 inches monthly rainfall in December in St Lucia3.6
    3.6 inches of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in December in St Lucia11
    11+ (Extreme) UV index
  • 77°F sea temperature in December in St Lucia77
    77°F sea temperature

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More about St Lucia

St Lucia by month

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

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The climate guide for South Africa (St Lucia) 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 St Lucia weather with the UK

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

Maximum daytime temperature (°F)

St Lucia, South Africa
UK (London)
84
45
84
45
84
50
81
55
77
63
73
68
73
72
75
72
75
66
77
59
79
50
82
46
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C)  |  Imperial (°F)

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