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Colchester Weather by Month
Average temperatures, rainfall and humidity for Colchester, United Kingdom, month by month, built from OpenWeather’s historical records. Use it to see what a typical Colchester month looks like before you travel — then check the live Colchester forecast for the days ahead.
Warmest month
July
23°C average high
Coolest month
January
2°C average low
Wettest month
October
68 mm of rain
Driest month
April
42 mm of rain
Average temperature and rainfall in Colchester by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 7°C | 2°C | -8°C / 15°C | 60 mm | 87% | 18 km/h |
| February | 9°C | 3°C | -6°C / 18°C | 62 mm | 85% | 20 km/h |
| March | 10°C | 4°C | -5°C / 21°C | 53 mm | 81% | 18 km/h |
| April | 13°C | 5°C | -3°C / 26°C | 42 mm | 77% | 16 km/h |
| May | 17°C | 9°C | 1°C / 31°C | 52 mm | 77% | 15 km/h |
| June | 21°C | 12°C | 5°C / 36°C | 50 mm | 76% | 15 km/h |
| July | 23°C | 14°C | 8°C / 36°C | 53 mm | 73% | 15 km/h |
| August | 23°C | 14°C | 7°C / 36°C | 58 mm | 74% | 15 km/h |
| September | 19°C | 11°C | 3°C / 30°C | 57 mm | 79% | 15 km/h |
| October | 15°C | 9°C | 0°C / 25°C | 68 mm | 85% | 18 km/h |
| November | 11°C | 5°C | -4°C / 17°C | 60 mm | 87% | 18 km/h |
| December | 9°C | 4°C | -6°C / 15°C | 61 mm | 88% | 19 km/h |
Best time to visit Colchester
The most comfortable time to visit Colchester is generally June to August, balancing mild daytime temperatures against the driest stretch of the year. The city has a moderate seasonal swing and rainfall is spread evenly across the months, totalling about 677 mm a year.
Travellers who prefer heat should aim for July, when highs average 23°C. October is the month to avoid if rain would spoil your plans — it averages 68 mm, roughly 2× the rainfall of the driest month (April).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Colchester forecast for what is happening now.