Climate averages 1991–2020
Viseu weather
in January.
A cool, wet month: the coolest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a cool month in Viseu: daytime highs average 10.5°C and nights cool to about 3.1°C. By daytime temperature it is the coolest month of the year.
Expect about 152 mm of rain on roughly 12 days, which makes January a wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 37 min on an average January day.
The nearest other city in this atlas is Aveiro (62 km away). In January its highs average 13.5°C, 3.1°C warmer than Viseu, with 128 mm of rain.
Among the 12 cities listed in Portugal, Viseu ranks 12th of 12 for the warmest January highs and 11th of 12 for the driest January (rainfall, lowest first). The mean January high of those 12 cities is 13.7°C; Viseu is 3.2°C cooler than that mean.
From January to February, average highs rise by 1.5°C to 12.0°C, and monthly rainfall falls from 152 mm to 102 mm.
The annual picture
January 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
Viseu climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 10.5°C3.1°C | 3.1°C | 152 | 11.6 | 9.610 h |
| February | 12.0°C3.4°C | 3.4°C | 102 | 9.3 | 10.611 h |
| March | 15.0°C5.4°C | 5.4°C | 115 | 10.6 | 11.912 h |
| April | 16.6°C7.1°C | 7.1°C | 118 | 12.8 | 13.313 h |
| May | 20.0°C9.9°C | 9.9°C | 98 | 11.6 | 14.414 h |
| June | 24.2°C13.1°C | 13.1°C | 40 | 6.2 | 15.015 h |
| July | 27.6°C15.4°C | 15.4°C | 19 | 3.6 | 14.815 h |
| August | 27.9°C15.8°C | 15.8°C | 26 | 4.6 | 13.814 h |
| September | 24.3°C13.7°C | 13.7°C | 66 | 7.1 | 12.513 h |
| October | 18.9°C10.5°C | 10.5°C | 168 | 12.2 | 11.211 h |
| November | 13.6°C6.4°C | 6.4°C | 150 | 12.7 | 10.010 h |
| December | 11.1°C4.1°C | 4.1°C | 160 | 11.6 | 9.39 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
January in nearby cities
- Aveiro in JanuaryPortugal · 62 kmHigh 13.5°C · Low 6.5°C · 128 mm rain
- Coimbra in JanuaryPortugal · 67 kmHigh 13.6°C · Low 4.9°C · 108 mm rain
- Porto in JanuaryPortugal · 80 kmHigh 12.8°C · Low 6.3°C · 150 mm rain
- Braga in JanuaryPortugal · 108 kmHigh 11.9°C · Low 3.7°C · 191 mm rain
- Leiria in JanuaryPortugal · 127 kmHigh 14.2°C · Low 7.0°C · 88 mm rain
- Cáceres, Spain in JanuarySpain · 186 kmHigh 11.4°C · Low 3.4°C · 55 mm rain
- Ourense in JanuarySpain · 186 kmHigh 11.6°C · Low 3.8°C · 108 mm rain
- Vigo in JanuarySpain · 187 kmHigh 12.3°C · Low 6.5°C · 221 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 Viseu) is explained once on the Viseu year overview and on the Sources, method and limits page.