Climate averages 1991–2020

Colchester weather
in October.

A cool, moderately wet month: the 6th warmest and one of the wettest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 14.3°C Daytime mean, October

Average low 9.5°C Night-time mean, October

Rainfall 64 mm 11 days with ≥1 mm

Daylight 11 h Sunrise to sunset, per day

October is a cool month in Colchester: daytime highs average 14.3°C and nights cool to about 9.5°C. By daytime temperature it is the 6th warmest of the 12 months.

Expect about 64 mm of rain on roughly 11 days, which makes October a moderately wet month (one of the wettest months of the year). Daylight, from sunrise to sunset, lasts about 10 h 43 min on an average October day.

The nearest other city in this atlas is Ipswich (26 km away). In October its highs average 14.3°C, about as warm as Colchester, with 67 mm of rain.

Among the 143 cities listed in the United Kingdom, Colchester ranks joint 33rd of 143 for the warmest October highs and joint 56th of 143 for the driest October (rainfall, lowest first). The mean October high of those 143 cities is 13.6°C; Colchester is 0.7°C warmer than that mean.

From October to November, average highs fall by 4.1°C to 10.3°C, and monthly rainfall falls from 64 mm to 61 mm.

The annual picture

October in context

30-year average

Average highAverage low°C

Monthly rainfall

Average total · mm

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Colchester climate table

1991–2020

Monthly climate averages for Colchester, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January	7.1°C3.0°C	3.0°C	57	12.1	8.38 h
February	7.4°C2.8°C	2.8°C	47	9.8	9.910 h
March	9.5°C4.0°C	4.0°C	43	10.2	11.812 h
April	12.2°C5.9°C	5.9°C	45	10.4	13.914 h
May	15.3°C8.9°C	8.9°C	53	10.0	15.616 h
June	18.2°C11.9°C	11.9°C	57	10.8	16.617 h
July	20.7°C14.2°C	14.2°C	58	11.8	16.216 h
August	20.7°C14.4°C	14.4°C	64	10.7	14.715 h
September	18.1°C12.3°C	12.3°C	52	10.3	12.713 h
October, selected	14.3°C9.5°C	9.5°C	64	11.4	10.711 h
November	10.3°C6.0°C	6.0°C	61	11.1	8.99 h
December	7.6°C3.7°C	3.7°C	62	11.6	7.98 h

Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Compare places

October in nearby cities

Distance from Colchester

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Colchester) is explained once on the Colchester year overview and on the Sources, method and limits page.