Annual mean 16°C · wettest around February · prevailing wind SW
Warmest
29.9 °C
Coldest
6.6 °C
Wettest
79%
Windiest
4.4 m/s
Prevailing
SW
3.4 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
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 Winchester over the whole year is 16°C. July is the hottest month, with highs of about 30°C; January is the coldest, with lows of about 2°C. Winchester has no sharply defined rainy season: the chance of rain on a given day runs from 73% in October, the driest month, to 78% in February, the wettest. Winds in Winchester are highest in February, averaging 2.9 m/s (10 km/h), and lightest in August, at 1.5 m/s (5 km/h). The prevailing wind is from the SW. The clearest skies in Winchester come in September, when the sky is typically 33% covered; February is the cloudiest month, at 55%.
Month by month Winchester 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
7°C
2°C
3°C
76%
52%
2.7 m/s
7
0
27
February
11°C
5°C
7°C
78%
55%
2.9 m/s
17
0
45
March
15°C
8°C
12°C
77%
43%
2.9 m/s
34
1
62
April
20°C
11°C
17°C
76%
38%
2.7 m/s
56
11
61
May
24°C
16°C
23°C
76%
40%
2.1 m/s
61
41
36
June
28°C
20°C
29°C
77%
34%
1.9 m/s
32
59
9
July
30°C
22°C
32°C
76%
33%
1.6 m/s
10
50
2
August
29°C
21°C
31°C
75%
36%
1.5 m/s
16
58
3
September
27°C
17°C
28°C
74%
33%
1.5 m/s
39
57
17
October
22°C
12°C
20°C
73%
37%
1.9 m/s
60
23
54
November
15°C
6°C
11°C
75%
38%
2.1 m/s
31
3
60
December
10°C
4°C
7°C
77%
51%
2.5 m/s
14
0
42
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 Winchester weather by season
Year round, Winchester has days of about 7°C at their warmest in January, its coolest month, and 30°C in July, its warmest; the coolest hours of the day run from 2°C to 22°C through the year, and the average temperature over the year is 16°C around the clock. Rain is most likely around February and least likely around October. 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.
Winchester weather in winterDecember to February
High 9°CLow 4°CRain 77%
Winter in Winchester has typical daily highs of about 9°C and lows of about 4°C, with a 77% chance of rain on a given day.
Winchester weather in springMarch to May
High 20°CLow 11°CRain 76%
Spring in Winchester has typical daily highs of about 20°C and lows of about 11°C, with a 76% chance of rain on a given day.
Winchester weather in summerJune to August
High 29°CLow 21°CRain 76%
Summer in Winchester has typical daily highs of about 29°C and lows of about 21°C, with a 76% chance of rain on a given day.
Winchester weather in autumnSeptember to November
High 21°CLow 12°CRain 74%
Autumn in Winchester has typical daily highs of about 21°C and lows of about 12°C, with a 74% chance of rain on a given day.
When is the rainy season in Winchester?
Winchester has no sharply defined rainy season: the chance of rain on a given day runs from 73% in October, the driest month, to 78% in February, the wettest.
What time of year is Winchester windiest?
Winds in Winchester are highest in February, averaging 2.9 m/s (10 km/h), and lightest in August, at 1.5 m/s (5 km/h). The prevailing wind is from the SW.
What is the average temperature in Winchester year round?
The average temperature in Winchester over the whole year is 16°C. July is the hottest month, with highs of about 30°C; January is the coldest, with lows of about 2°C.