January 2026 in mainland Portugal was classified as warm in terms of air temperature and very rainy in terms of precipitation.
| Extreme values | ||
|---|---|---|
| Quantity | Value, place and day | |
| Lowest minimum temperature value | -7.3 °C in Miranda do Douro, on the 6th | |
| Highest maximum temperature value | 20.6 °C in Alvalade, on the 2nd | |
| Highest amount of precipitation in 24h | 143.8 mm in V. Nova de Cerveira, on the 26th | |
| Highest value of maximum wind intensity (gust) | 172.4 km/h in Ansião, on the 28th | |