Annual mean 11°C · wettest around December · prevailing wind SW
Warmest
21.7 °C
Coldest
5.5 °C
Wettest
29%
Windiest
6.3 m/s
Prevailing
SW
5.3 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 Colchester over the whole year is 11°C. July is the hottest month, with highs of about 21°C; January is the coldest, with lows of about 4°C. Colchester has no sharply defined rainy season: the chance of rain on a given day runs from 14% in April, the driest month, to 24% in December, the wettest. Winds in Colchester are highest in February, averaging 5.1 m/s (18 km/h), and lightest in May, at 4.0 m/s (14 km/h). The prevailing wind is from the SW. The clearest skies in Colchester come in June, when the sky is typically 51% covered; December is the cloudiest month, at 68%.
Month by month Colchester 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
6°C
4°C
1°C
19%
64%
4.7 m/s
0
0
9
February
8°C
4°C
2°C
20%
61%
5.1 m/s
0
0
19
March
9°C
5°C
4°C
21%
60%
4.7 m/s
1
0
31
April
12°C
6°C
7°C
14%
52%
4.3 m/s
8
0
52
May
16°C
10°C
12°C
17%
53%
4.0 m/s
31
0
77
June
19°C
13°C
16°C
16%
51%
4.1 m/s
61
6
77
July
21°C
15°C
19°C
16%
53%
4.0 m/s
75
11
74
August
21°C
15°C
18°C
16%
51%
4.0 m/s
74
10
74
September
19°C
12°C
16°C
17%
52%
4.0 m/s
56
5
79
October
14°C
10°C
11°C
23%
57%
4.2 m/s
17
0
74
November
10°C
7°C
5°C
22%
62%
4.4 m/s
0
0
38
December
7°C
5°C
3°C
24%
68%
4.7 m/s
0
0
18
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 Colchester weather by season
Year round, Colchester has days of about 6°C at their warmest in January, its coolest month, and 21°C in July, its warmest; the coolest hours of the day run from 4°C to 15°C through the year, and the average temperature over the year is 11°C around the clock. Rain is most likely around December and least likely around April. 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.
Colchester weather in winterDecember to February
High 7°CLow 4°CRain 21%
Winter in Colchester has typical daily highs of about 7°C and lows of about 4°C, with a 21% chance of rain on a given day.
Colchester weather in springMarch to May
High 12°CLow 7°CRain 17%
Spring in Colchester has typical daily highs of about 12°C and lows of about 7°C, with a 17% chance of rain on a given day.
Colchester weather in summerJune to August
High 21°CLow 14°CRain 16%
Summer in Colchester has typical daily highs of about 21°C and lows of about 14°C, with a 16% chance of rain on a given day.
Colchester weather in autumnSeptember to November
High 14°CLow 10°CRain 21%
Autumn in Colchester has typical daily highs of about 14°C and lows of about 10°C, with a 21% chance of rain on a given day.
When is the rainy season in Colchester?
Colchester has no sharply defined rainy season: the chance of rain on a given day runs from 14% in April, the driest month, to 24% in December, the wettest.
What time of year is Colchester windiest?
Winds in Colchester are highest in February, averaging 5.1 m/s (18 km/h), and lightest in May, at 4.0 m/s (14 km/h). The prevailing wind is from the SW.
What is the average temperature in Colchester year round?
The average temperature in Colchester over the whole year is 11°C. July is the hottest month, with highs of about 21°C; January is the coldest, with lows of about 4°C.