Climate averages 1991–2020
Santiago de Compostela weather
in December.
A cool, wet month: the 11th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cool month in Santiago de Compostela: daytime highs average 11.5°C and nights cool to about 4.9°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 142 mm of rain on roughly 14 days, which makes December a wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 05 min on an average December day.
The nearest other city in this atlas is Pontevedra (51 km away). In December its highs average 13.4°C, 1.9°C warmer than Santiago de Compostela, with 198 mm of rain.
Among the 93 cities listed in Spain, Santiago de Compostela ranks joint 63rd of 93 for the warmest December highs and 91st of 93 for the driest December (rainfall, lowest first). The mean December high of those 93 cities is 13.1°C; Santiago de Compostela is 1.6°C cooler than that mean.
From December to January, average highs fall by 0.7°C to 10.8°C, and monthly rainfall falls from 142 mm to 141 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
Santiago de Compostela climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 10.8°C4.0°C | 4.0°C | 141 | 13.9 | 9.49 h |
| February | 11.7°C3.8°C | 3.8°C | 101 | 11.7 | 10.511 h |
| March | 14.0°C5.3°C | 5.3°C | 106 | 12.1 | 11.912 h |
| April | 15.3°C6.6°C | 6.6°C | 115 | 14.4 | 13.413 h |
| May | 17.8°C9.1°C | 9.1°C | 92 | 13.0 | 14.615 h |
| June | 20.8°C11.7°C | 11.7°C | 54 | 8.7 | 15.315 h |
| July | 23.1°C13.7°C | 13.7°C | 30 | 5.9 | 15.015 h |
| August | 23.6°C14.2°C | 14.2°C | 44 | 7.2 | 13.914 h |
| September | 21.7°C12.6°C | 12.6°C | 69 | 9.1 | 12.513 h |
| October | 17.8°C10.2°C | 10.2°C | 140 | 13.5 | 11.111 h |
| November | 13.4°C7.0°C | 7.0°C | 151 | 15.3 | 9.810 h |
| December, selected | 11.5°C4.9°C | 4.9°C | 142 | 13.8 | 9.19 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
- Pontevedra in DecemberSpain · 51 kmHigh 13.4°C · Low 7.1°C · 198 mm rain
- A Coruña in DecemberSpain · 56 kmHigh 13.1°C · Low 8.4°C · 140 mm rain
- Vigo in DecemberSpain · 73 kmHigh 13.1°C · Low 7.4°C · 224 mm rain
- Lugo in DecemberSpain · 82 kmHigh 10.1°C · Low 3.6°C · 115 mm rain
- Ourense in DecemberSpain · 82 kmHigh 12.2°C · Low 4.6°C · 114 mm rain
- Braga in DecemberPortugal · 148 kmHigh 12.5°C · Low 4.8°C · 205 mm rain
- Porto in DecemberPortugal · 193 kmHigh 13.5°C · Low 7.4°C · 167 mm rain
- Avilés in DecemberSpain · 225 kmHigh 12.8°C · Low 8.0°C · 118 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 Santiago de Compostela) is explained once on the Santiago de Compostela year overview and on the Sources, method and limits page.