Climate averages 1991–2020
Douglas weather
in December.
A cool, wet month: the 9th warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cool month in Douglas: daytime highs average 8.9°C and nights cool to about 6.6°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 114 mm of rain on roughly 18 days, which makes December a wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 7 h 28 min on an average December day.
The nearest other city in this atlas is Blackpool (101 km away). In December its highs average 7.4°C, 1.5°C cooler than Douglas, with 139 mm of rain.
From December to January, average highs fall by 0.9°C to 8.1°C, and monthly rainfall falls from 114 mm to 97 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
Douglas climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 8.1°C5.8°C | 5.8°C | 97 | 16.5 | 8.08 h |
| February | 7.6°C5.4°C | 5.4°C | 76 | 14.3 | 9.710 h |
| March | 8.1°C5.8°C | 5.8°C | 70 | 12.9 | 11.812 h |
| April | 9.4°C7.1°C | 7.1°C | 59 | 11.7 | 14.014 h |
| May | 11.7°C9.3°C | 9.3°C | 56 | 11.2 | 16.016 h |
| June | 13.8°C11.7°C | 11.7°C | 64 | 10.7 | 17.117 h |
| July | 15.5°C13.5°C | 13.5°C | 67 | 12.2 | 16.617 h |
| August | 16.0°C14.0°C | 14.0°C | 78 | 12.9 | 14.915 h |
| September | 15.1°C13.1°C | 13.1°C | 85 | 13.3 | 12.813 h |
| October | 13.1°C11.0°C | 11.0°C | 117 | 16.1 | 10.611 h |
| November | 10.6°C8.5°C | 8.5°C | 125 | 18.5 | 8.69 h |
| December, selected | 8.9°C6.6°C | 6.6°C | 114 | 18.2 | 7.57 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
- Blackpool in DecemberUnited Kingdom · 101 kmHigh 7.4°C · Low 4.2°C · 139 mm rain
- Belfast in DecemberUnited Kingdom · 106 kmHigh 7.9°C · Low 4.4°C · 82 mm rain
- Fylde in DecemberUnited Kingdom · 108 kmHigh 7.3°C · Low 3.9°C · 139 mm rain
- Lisburn in DecemberUnited Kingdom · 109 kmHigh 7.5°C · Low 3.6°C · 82 mm rain
- Southport in DecemberUnited Kingdom · 112 kmHigh 7.6°C · Low 4.2°C · 139 mm rain
- Preston in DecemberUnited Kingdom · 124 kmHigh 7.0°C · Low 2.9°C · 123 mm rain
- Liverpool in DecemberUnited Kingdom · 129 kmHigh 7.3°C · Low 3.6°C · 121 mm rain
- Carlisle in DecemberUnited Kingdom · 130 kmHigh 6.1°C · Low 1.5°C · 100 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 Douglas) is explained once on the Douglas year overview and on the Sources, method and limits page.