Climate averages 1991–2020
Coimbra weather
in December.
A cool, wet month: the 11th 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 Coimbra: daytime highs average 14.3°C and nights cool to about 6.0°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 111 mm of rain on roughly 11 days, which makes December a wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 22 min on an average December day.
The nearest other city in this atlas is Aveiro (52 km away). In December its highs average 14.3°C, about as warm as Coimbra, with 141 mm of rain.
Among the 12 cities listed in Portugal, Coimbra ranks joint 7th of 12 for the warmest December highs and 8th of 12 for the driest December (rainfall, lowest first). The mean December high of those 12 cities is 14.4°C; Coimbra is 0.2°C cooler than that mean.
From December to January, average highs fall by 0.7°C to 13.6°C, and monthly rainfall falls from 111 mm to 108 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
Coimbra climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 13.6°C4.9°C | 4.9°C | 108 | 10.8 | 9.710 h |
| February | 14.8°C5.3°C | 5.3°C | 81 | 8.7 | 10.611 h |
| March | 17.6°C7.3°C | 7.3°C | 85 | 9.6 | 11.912 h |
| April | 19.0°C8.9°C | 8.9°C | 92 | 10.7 | 13.213 h |
| May | 22.0°C11.5°C | 11.5°C | 73 | 9.2 | 14.414 h |
| June | 25.5°C14.4°C | 14.4°C | 23 | 5.0 | 15.015 h |
| July | 28.3°C16.0°C | 16.0°C | 8.5 | 2.2 | 14.715 h |
| August | 28.9°C16.5°C | 16.5°C | 14 | 3.1 | 13.814 h |
| September | 26.3°C15.0°C | 15.0°C | 49 | 6.0 | 12.512 h |
| October | 21.6°C12.3°C | 12.3°C | 117 | 11.2 | 11.211 h |
| November | 16.6°C8.4°C | 8.4°C | 117 | 11.9 | 10.010 h |
| December, selected | 14.3°C6.0°C | 6.0°C | 111 | 10.9 | 9.49 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
- Aveiro in DecemberPortugal · 52 kmHigh 14.3°C · Low 7.6°C · 141 mm rain
- Leiria in DecemberPortugal · 61 kmHigh 15.0°C · Low 8.2°C · 91 mm rain
- Viseu in DecemberPortugal · 67 kmHigh 11.1°C · Low 4.1°C · 160 mm rain
- Porto in DecemberPortugal · 106 kmHigh 13.5°C · Low 7.4°C · 167 mm rain
- Braga in DecemberPortugal · 150 kmHigh 12.5°C · Low 4.8°C · 205 mm rain
- Amadora in DecemberPortugal · 176 kmHigh 14.6°C · Low 9.7°C · 79 mm rain
- Lisbon in DecemberPortugal · 176 kmHigh 14.3°C · Low 10.2°C · 79 mm rain
- Queluz in DecemberPortugal · 176 kmHigh 14.7°C · Low 10.7°C · 79 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 Coimbra) is explained once on the Coimbra year overview and on the Sources, method and limits page.