Annual mean 27°C · wettest around September · prevailing wind E
Warmest
29.9 °C
Coldest
26.8 °C
Wettest
31%
Windiest
5.8 m/s
Prevailing
E
4.9 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Saint John’s over the whole year is 27°C. August is the hottest month, with highs of about 30°C; February is the coldest, with lows of about 24°C. Saint John’s has no sharply defined rainy season: the chance of rain on a given day runs from 19% in June, the driest month, to 30% in September, the wettest. Winds in Saint John’s are highest in July, averaging 4.7 m/s (17 km/h), and lightest in October, at 2.9 m/s (10 km/h). The prevailing wind is from the E. The clearest skies in Saint John’s come in October, when the sky is typically 47% covered; July is the cloudiest month, at 54%.
Month by month Saint John’s climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
27°C
24°C
27°C
23%
51%
3.9 m/s
52
72
7
February
27°C
24°C
27°C
24%
51%
4.3 m/s
58
70
10
March
27°C
24°C
27°C
23%
50%
4.1 m/s
51
74
6
April
28°C
24°C
28°C
23%
53%
4.0 m/s
38
74
4
May
29°C
26°C
30°C
20%
54%
4.1 m/s
17
76
1
June
29°C
26°C
31°C
19%
51%
4.5 m/s
9
73
1
July
30°C
27°C
31°C
25%
54%
4.7 m/s
6
70
0
August
30°C
27°C
32°C
26%
50%
4.0 m/s
3
64
0
September
30°C
26°C
32°C
30%
49%
3.0 m/s
2
53
1
October
29°C
26°C
32°C
27%
47%
2.9 m/s
3
62
1
November
29°C
25°C
31°C
26%
51%
3.2 m/s
10
72
1
December
28°C
25°C
29°C
26%
50%
3.7 m/s
32
77
3
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Saint John’s weather by season
Year round, Saint John’s has days of about 27°C at their warmest in January, its coolest month, and 30°C in August, its warmest; the coolest hours of the day run from 24°C to 27°C through the year, and the average temperature over the year is 27°C around the clock. Rain is most likely around September and least likely around June. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Saint John’s weather in winterDecember to February
High 27°CLow 24°CRain 24%
Winter in Saint John’s has typical daily highs of about 27°C and lows of about 24°C, with a 24% chance of rain on a given day.
Saint John’s weather in springMarch to May
High 28°CLow 25°CRain 22%
Spring in Saint John’s has typical daily highs of about 28°C and lows of about 25°C, with a 22% chance of rain on a given day.
Saint John’s weather in summerJune to August
High 30°CLow 27°CRain 24%
Summer in Saint John’s has typical daily highs of about 30°C and lows of about 27°C, with a 24% chance of rain on a given day.
Saint John’s weather in autumnSeptember to November
High 29°CLow 26°CRain 27%
Autumn in Saint John’s has typical daily highs of about 29°C and lows of about 26°C, with a 27% chance of rain on a given day.
When is the rainy season in Saint John’s?
Saint John’s has no sharply defined rainy season: the chance of rain on a given day runs from 19% in June, the driest month, to 30% in September, the wettest.
What time of year is Saint John’s windiest?
Winds in Saint John’s are highest in July, averaging 4.7 m/s (17 km/h), and lightest in October, at 2.9 m/s (10 km/h). The prevailing wind is from the E.
What is the average temperature in Saint John’s year round?
The average temperature in Saint John’s over the whole year is 27°C. August is the hottest month, with highs of about 30°C; February is the coldest, with lows of about 24°C.