Oeiras in December
6.2out of 10
Possible, with caveats
Hot: daytime highs around 34°C. Frequent rain: about 11 rainy days.
34°CAvg high
25°CAvg low
11Rainy days (81 mm)
12:24 hDaylight
05:33Sunrise · 17:57 Sunset
Why this score
- Hot: daytime highs around 34°C
- Frequent rain: about 11 rainy days
What to wear and pack
- Light, breathable clothing
- Shorts or a light skirt
- Rain jacket or compact umbrella
- Sunscreen, sunglasses and a hat
How reliable is the forecast?
Rain in December varies a lot between years (±3.8 rainy days), so check the forecast closer to your trip. Averages cover 30 years (1991–2020). Individual days can differ a lot.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 32°C | 24°C | 165 mm | 20 | – | – | 5.2 |
| February | 32°C | 23°C | 168 mm | 18 | – | – | 5.4 |
| March | 32°C | 23°C | 161 mm | 20 | – | – | 5.4 |
| April | 32°C | 23°C | 91 mm | 13 | – | – | 6.4 |
| May | 33°C | 24°C | 33 mm | 5 | – | – | 7.3 |
| June | 33°C | 24°C | 3 mm | 0 | – | – | 7.8 |
| July | 34°C | 23°C | 2 mm | 0 | – | – | 7.7 |
| August | 35°C | 23°C | 0 mm | 0 | – | – | 7.4 |
| September | 37°C | 25°C | 1 mm | 0 | – | – | 7.0 |
| October | 37°C | 26°C | 14 mm | 2 | – | – | 6.6 |
| November | 36°C | 26°C | 44 mm | 6 | – | – | 6.4 |
| December | 34°C | 25°C | 81 mm | 11 | – | – | 6.2 |
Frequently asked questions
How hot is Oeiras in December?
Daytime highs average 34°C and nights about 25°C.
When is the best time to visit Oeiras?
The best months are June, July, August, May.