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 (°F)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
28°F maximum daytime temperature in January in St John28
30°F maximum daytime temperature in February in St John30
37°F maximum daytime temperature in March in St John37
46°F maximum daytime temperature in April in St John46
57°F maximum daytime temperature in May in St John57
64°F maximum daytime temperature in June in St John64
70°F maximum daytime temperature in July in St John70
70°F maximum daytime temperature in August in St John70
64°F maximum daytime temperature in September in St John64
54°F maximum daytime temperature in October in St John54
45°F maximum daytime temperature in November in St John45
34°F maximum daytime temperature in December in St John34
Min temperature (night-time)
12°F minimum night-time temperature in January in St John12
12°F minimum night-time temperature in February in St John12
23°F minimum night-time temperature in March in St John23
32°F minimum night-time temperature in April in St John32
41°F minimum night-time temperature in May in St John41
48°F minimum night-time temperature in June in St John48
54°F minimum night-time temperature in July in St John54
55°F minimum night-time temperature in August in St John55
50°F minimum night-time temperature in September in St John50
41°F minimum night-time temperature in October in St John41
30°F minimum night-time temperature in November in St John30
18°F minimum night-time temperature in December in St John18
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
36°F sea temperature in January in St John36
34°F sea temperature in February in St John34
34°F sea temperature in March in St John34
36°F sea temperature in April in St John36
39°F sea temperature in May in St John39
43°F sea temperature in June in St John43
54°F sea temperature in July in St John54
55°F sea temperature in August in St John55
55°F sea temperature in September in St John55
52°F sea temperature in October in St John52
45°F sea temperature in November in St John45
39°F sea temperature in December in St John39

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 (inches)
5.0 inches monthly rainfall in January in St John5.0
4.1 inches monthly rainfall in February in St John4.1
3.7 inches monthly rainfall in March in St John3.7
3.9 inches monthly rainfall in April in St John3.9
4.3 inches monthly rainfall in May in St John4.3
3.8 inches monthly rainfall in June in St John3.8
3.9 inches monthly rainfall in July in St John3.9
3.8 inches monthly rainfall in August in St John3.8
4.1 inches monthly rainfall in September in St John4.1
4.2 inches monthly rainfall in October in St John4.2
5.2 inches monthly rainfall in November in St John5.2
5.7 inches monthly rainfall in December in St John5.7

More about St John

St John by month

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

Recommended for New Brunswick

Air Canada: Low fares on flights to Canada & USA

  • Check out latest flight deals & promotional offers
  • Find lowest fares on flights to Canada, USA & beyond
  • Select a departure point to see the available routes & prices
Go to Air Canada deal >>

View all Air Canada offers

Air CanadaLow fare finder

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)  |  Imperial (°F)

Back to top

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

TUI: up to 7% off holidays booked online

  • Book online with TUI & save up to 7% on holidays
  • FREE child places available for select holidays
  • Pay £0 deposits with direct debit & spread the cost
Go to TUI deal >>

View all TUI offers

TUITUI deal finder

Back to top

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 (°F)

St John, New Brunswick, Canada
USA (Washington)
41
45
37
55
46
66
57
75
64
84
70
88
70
86
64
79
54
68
45
57
34
46
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
28
30

Metric (°C)  |  Imperial (°F)

Compare more St John weather >>

Back to top

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^