Annual mean 10°C · wettest around June · prevailing wind W
Warmest
24.2 °C
Coldest
-2.5 °C
Wettest
14%
Windiest
5.5 m/s
Prevailing
W
4.5 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
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 Jamestown over the whole year is 10°C. July is the hottest month, with highs of about 24°C; January is the coldest, with lows of about -4°C. Jamestown has no sharply defined rainy season: the chance of rain on a given day runs from 11% in August, the driest month, to 16% in June, the wettest. Winds in Jamestown are highest in January, averaging 4.5 m/s (16 km/h), and lightest in September, at 2.9 m/s (10 km/h). The prevailing wind is from the W. The clearest skies in Jamestown come in July, when the sky is typically 40% covered; January is the cloudiest month, at 80%.
Month by month Jamestown 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
-2°C
-4°C
-8°C
12%
80%
4.5 m/s
0
0
2
February
-0°C
-3°C
-6°C
12%
70%
4.5 m/s
0
0
5
March
4°C
0°C
-2°C
13%
61%
4.4 m/s
2
0
15
April
9°C
5°C
4°C
16%
58%
4.0 m/s
13
0
37
May
16°C
11°C
13°C
15%
51%
3.4 m/s
42
6
66
June
21°C
16°C
20°C
16%
43%
3.4 m/s
69
21
63
July
24°C
19°C
24°C
12%
40%
3.0 m/s
78
42
42
August
23°C
18°C
23°C
11%
44%
3.0 m/s
80
36
49
September
20°C
14°C
19°C
11%
45%
2.9 m/s
69
18
69
October
14°C
10°C
10°C
16%
57%
3.6 m/s
31
3
60
November
6°C
3°C
1°C
14%
66%
4.3 m/s
4
0
19
December
1°C
-1°C
-5°C
13%
79%
4.4 m/s
0
0
5
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 Jamestown weather by season
Year round, Jamestown has days of about -2°C at their warmest in January, its coolest month, and 24°C in July, its warmest; the coolest hours of the day run from -4°C to 19°C through the year, and the average temperature over the year is 10°C around the clock. Rain is most likely around June and least likely around August. 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.
Jamestown weather in winterDecember to February
High -0°CLow -3°CRain 12%
Winter in Jamestown has typical daily highs of about -0°C and lows of about -3°C, with a 12% chance of rain on a given day.
Jamestown weather in springMarch to May
High 10°CLow 5°CRain 14%
Spring in Jamestown has typical daily highs of about 10°C and lows of about 5°C, with a 14% chance of rain on a given day.
Jamestown weather in summerJune to August
High 23°CLow 18°CRain 13%
Summer in Jamestown has typical daily highs of about 23°C and lows of about 18°C, with a 13% chance of rain on a given day.
Jamestown weather in autumnSeptember to November
High 13°CLow 9°CRain 14%
Autumn in Jamestown has typical daily highs of about 13°C and lows of about 9°C, with a 14% chance of rain on a given day.
When is the rainy season in Jamestown?
Jamestown has no sharply defined rainy season: the chance of rain on a given day runs from 11% in August, the driest month, to 16% in June, the wettest.
What time of year is Jamestown windiest?
Winds in Jamestown are highest in January, averaging 4.5 m/s (16 km/h), and lightest in September, at 2.9 m/s (10 km/h). The prevailing wind is from the W.
What is the average temperature in Jamestown year round?
The average temperature in Jamestown over the whole year is 10°C. July is the hottest month, with highs of about 24°C; January is the coldest, with lows of about -4°C.