Climate averages 1991–2020
Exeter weather
in December.
A cool, moderately wet month: the 10th warmest and the joint 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cool month in Exeter: daytime highs average 8.5°C and nights cool to about 4.1°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 73 mm of rain on roughly 12 days, which makes December a moderately wet month (the joint 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 8 h 04 min on an average December day.
The nearest other city in this atlas is Plymouth (59 km away). In December its highs average 9.3°C, 0.8°C warmer than Exeter, with 109 mm of rain.
Among the 143 cities listed in the United Kingdom, Exeter ranks joint 5th of 143 for the warmest December highs and joint 96th of 143 for the driest December (rainfall, lowest first). The mean December high of those 143 cities is 7.2°C; Exeter is 1.3°C warmer than that mean.
From December to January, average highs fall by 0.4°C to 8.0°C, and monthly rainfall falls from 73 mm to 67 mm.
The annual picture
December in context
Monthly rainfall
Average total · mmAverages 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
| 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 | 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, selected | 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
December in nearby cities
- Plymouth in DecemberUnited Kingdom · 59 kmHigh 9.3°C · Low 5.6°C · 109 mm rain
- Weston-super-Mare in DecemberUnited Kingdom · 79 kmHigh 8.3°C · Low 4.0°C · 80 mm rain
- Cardiff in DecemberUnited Kingdom · 88 kmHigh 7.9°C · Low 3.9°C · 107 mm rain
- Newport in DecemberUnited Kingdom · 103 kmHigh 7.9°C · Low 3.1°C · 86 mm rain
- Swansea in DecemberUnited Kingdom · 104 kmHigh 8.2°C · Low 4.7°C · 145 mm rain
- Bristol in DecemberUnited Kingdom · 104 kmHigh 7.8°C · Low 3.2°C · 73 mm rain
- Poole in DecemberUnited Kingdom · 109 kmHigh 8.9°C · Low 5.4°C · 78 mm rain
- Bath in DecemberUnited Kingdom · 109 kmHigh 7.5°C · Low 2.8°C · 72 mm rain
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 limitsHow 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.