Climate averages 1991–2020

Exeter weather
in August.

A mild, moderately wet month: the 2nd warmest and the joint 7th driest of the year.

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

Average high 19.7°C Daytime mean, August

Average low 13.3°C Night-time mean, August

Rainfall 65 mm 11 days with ≥1 mm

Daylight 15 h Sunrise to sunset, per day

August is a mild month in Exeter: daytime highs average 19.7°C and nights cool to about 13.3°C. By daytime temperature it is the 2nd warmest of the 12 months.

Expect about 65 mm of rain on roughly 11 days, which makes August a moderately wet month (the joint 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 32 min on an average August day.

The nearest other city in this atlas is Plymouth (59 km away). In August its highs average 19.4°C, about as warm as Exeter, with 69 mm of rain.

Among the 143 cities listed in the United Kingdom, Exeter ranks joint 80th of 143 for the warmest August highs and joint 71st of 143 for the driest August (rainfall, lowest first). The mean August high of those 143 cities is 19.7°C; Exeter is level with that mean.

From August to September, average highs fall by 2.2°C to 17.5°C, and monthly rainfall falls from 65 mm to 53 mm.

The annual picture

August 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

Exeter climate table

1991–2020

Monthly climate averages for Exeter, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January	8.0°C3.5°C	3.5°C	67	12.2	8.59 h
February	8.2°C3.1°C	3.1°C	57	10.7	10.010 h
March	10.0°C4.1°C	4.1°C	56	11.4	11.812 h
April	12.5°C5.6°C	5.6°C	64	11.4	13.814 h
May	15.4°C8.4°C	8.4°C	65	12.0	15.515 h
June	18.0°C11.3°C	11.3°C	61	10.8	16.416 h
July	19.9°C13.2°C	13.2°C	57	10.8	16.016 h
August, selected	19.7°C13.3°C	13.3°C	65	11.2	14.515 h
September	17.5°C11.5°C	11.5°C	53	9.5	12.713 h
October	14.2°C9.2°C	9.2°C	76	12.4	10.811 h
November	10.8°C6.3°C	6.3°C	73	12.3	9.09 h
December	8.5°C4.1°C	4.1°C	73	11.9	8.18 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

August in nearby cities

Distance from Exeter

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 Exeter) is explained once on the Exeter year overview and on the Sources, method and limits page.