Average annual temperature is 17.4 °C
Absolute maximum temperature: 37.0 °C
Absolute minimum temperature: 4.9 °C
Number of sunny days: 213 days
Number of rainy days: 152 days
Look at detailed online map of Oeiras
* Weather data for Oeiras Portugal is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 18.4 | 19.3 | 23.9 | 30.2 | 28.6 | 32.3 | 29.4 | 37.0 | 33.2 | 31.4 | 21.3 | 19.0 |
| Average daytime temperature (°C) | 14.8 | 15.9 | 17.7 | 22.6 | 23.0 | 25.3 | 26.0 | 28.3 | 24.7 | 23.5 | 18.8 | 15.8 |
| Average temperature (°C) | 11.9 | 11.8 | 14.2 | 17.5 | 18.6 | 21.0 | 21.1 | 22.9 | 20.5 | 20.0 | 16.0 | 12.7 |
| Average night temperature (°C) | 9.3 | 8.7 | 11.3 | 13.4 | 15.1 | 17.5 | 17.5 | 19.0 | 17.3 | 17.1 | 13.3 | 10.1 |
| Absolute minimum temperature (°C) | 4.9 | 5.3 | 5.6 | 10.8 | 12.8 | 14.4 | 16.2 | 16.5 | 14.9 | 13.7 | 8.8 | 5.9 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.8 | 10.8 | 12.0 | 13.2 | 14.3 | 14.8 | 14.6 | 13.6 | 12.4 | 11.2 | 10.1 | 9.5 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.4 | 8.8 | 8.9 | 11.1 | 12.4 | 12.4 | 13.1 | 12.0 | 10.0 | 7.6 | 7.2 | 6.5 |
| Precipitation (mm) | 54 | 39 | 42 | 24 | 25 | 40 | 0 | 1 | 60 | 123 | 77 | 44 |
| Sunny days | 17 | 17 | 13 | 22 | 16 | 18 | 29 | 26 | 13 | 12 | 13 | 17 |
| Rainy days | 14 | 11 | 18 | 8 | 15 | 12 | 2 | 5 | 17 | 19 | 17 | 14 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Oeiras during the most sunny months:
The largest precipitation sum in Oeiras is at