St John weather by month

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

Temperature in St John (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
-2°C maximum daytime temperature in January in St John-2
-1°C maximum daytime temperature in February in St John-1
3°C maximum daytime temperature in March in St John3
8°C maximum daytime temperature in April in St John8
14°C maximum daytime temperature in May in St John14
18°C maximum daytime temperature in June in St John18
21°C maximum daytime temperature in July in St John21
21°C maximum daytime temperature in August in St John21
18°C maximum daytime temperature in September in St John18
12°C maximum daytime temperature in October in St John12
7°C maximum daytime temperature in November in St John7
1°C maximum daytime temperature in December in St John1
Min temperature (night-time)
-11°C minimum night-time temperature in January in St John-11
-11°C minimum night-time temperature in February in St John-11
-5°C minimum night-time temperature in March in St John-5
0°C minimum night-time temperature in April in St John0
5°C minimum night-time temperature in May in St John5
9°C minimum night-time temperature in June in St John9
12°C minimum night-time temperature in July in St John12
13°C minimum night-time temperature in August in St John13
10°C minimum night-time temperature in September in St John10
5°C minimum night-time temperature in October in St John5
-1°C minimum night-time temperature in November in St John-1
-8°C minimum night-time temperature in December in St John-8
Heat & Humidity
No heat & humidity in January in St John0
No heat & humidity in February in St John0
No heat & humidity in March in St John0
No heat & humidity in April in St John0
No heat & humidity in May in St John0
No heat & humidity in June in St John0
No heat & humidity in July in St John0
No heat & humidity in August in St John0
No heat & humidity in September in St John0
No heat & humidity in October in St John0
No heat & humidity in November in St John0
No heat & humidity in December in St John0
Sea temperature
2°C sea temperature in January in St John2
1°C sea temperature in February in St John1
1°C sea temperature in March in St John1
2°C sea temperature in April in St John2
4°C sea temperature in May in St John4
6°C sea temperature in June in St John6
12°C sea temperature in July in St John12
13°C sea temperature in August in St John13
13°C sea temperature in September in St John13
11°C sea temperature in October in St John11
7°C sea temperature in November in St John7
4°C sea temperature in December in St John4

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

Sunshine & Daylight in St John

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
9 hours of daylight per day in January in St John9
10 hours of daylight per day in February in St John10
12 hours of daylight per day in March in St John12
14 hours of daylight per day in April in St John14
15 hours of daylight per day in May in St John15
16 hours of daylight per day in June in St John16
15 hours of daylight per day in July in St John15
14 hours of daylight per day in August in St John14
12 hours of daylight per day in September in St John12
11 hours of daylight per day in October in St John11
10 hours of daylight per day in November in St John10
9 hours of daylight per day in December in St John9
UV Index (Maximum)
UV (maximum) index 1 (Low) in January in St John1
UV (maximum) index 2 (Low) in February in St John2
UV (maximum) index 3 (Moderate) in March in St John3
UV (maximum) index 5 (Moderate) in April in St John5
UV (maximum) index 6 (High) in May in St John6
UV (maximum) index 7 (High) in June in St John7
UV (maximum) index 7 (High) in July in St John7
UV (maximum) index 7 (High) in August in St John7
UV (maximum) index 5 (Moderate) in September in St John5
UV (maximum) index 3 (Moderate) in October in St John3
UV (maximum) index 1 (Low) in November in St John1
UV (maximum) index 1 (Low) in December in St John1

Rainfall in St John

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
13 days with some rainfall in January in St John13
11 days with some rainfall in February in St John11
12 days with some rainfall in March in St John12
13 days with some rainfall in April in St John13
14 days with some rainfall in May in St John14
13 days with some rainfall in June in St John13
12 days with some rainfall in July in St John12
12 days with some rainfall in August in St John12
11 days with some rainfall in September in St John11
12 days with some rainfall in October in St John12
14 days with some rainfall in November in St John14
14 days with some rainfall in December in St John14
Average monthly rainfall (mm)
126 mm monthly rainfall in January in St John126
104 mm monthly rainfall in February in St John104
95 mm monthly rainfall in March in St John95
100 mm monthly rainfall in April in St John100
108 mm monthly rainfall in May in St John108
96 mm monthly rainfall in June in St John96
100 mm monthly rainfall in July in St John100
97 mm monthly rainfall in August in St John97
104 mm monthly rainfall in September in St John104
106 mm monthly rainfall in October in St John106
133 mm monthly rainfall in November in St John133
145 mm monthly rainfall in December in St John145

More about St John

St John by month

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

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The climate guide for New Brunswick (St John) 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 John?

St John has a cold climate with warm summers and some rainfall in all months.

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

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Tropical storm risk: St John, Canada hurricane season

% of month affected by tropical storms
0
0
0
0
0
0
0
0
1.8%
0
0
0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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More about Canada

Compare St John with the USA

Below the St John chart shows average maximum daytime temperature for St John, New Brunswick, Canada and the USA (Washington).

Maximum daytime temperature (°C)

St John, New Brunswick, Canada
USA (Washington)
5
7
3
13
8
19
14
24
18
29
21
31
21
30
18
26
12
20
7
14
1
8
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
-2
-1

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

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