Sintra in December
6.5out of 10
Possible, with caveats
Mild: highs around 15°C. Frequent rain: about 11 rainy days.
15°CAvg high
13°CAvg low
11Rainy days (89 mm)
9:18 hDaylight
07:55Sunrise · 17:13 Sunset
Why this score
- Mild: highs around 15°C
- Frequent rain: about 11 rainy days
- Rain varies a lot between years (±5.6 days)
What to wear and pack
- Layers you can add or remove
- Rain jacket or compact umbrella
How reliable is the forecast?
Rain in December varies a lot between years (±5.6 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 | 14°C | 12°C | 81 mm | 10 | – | – | 6.5 |
| February | 14°C | 12°C | 60 mm | 8 | – | – | 6.7 |
| March | 15°C | 13°C | 56 mm | 8 | – | – | 6.8 |
| April | 15°C | 14°C | 50 mm | 8 | – | – | 7.0 |
| May | 17°C | 15°C | 40 mm | 5 | – | – | 7.5 |
| June | 18°C | 17°C | 8 mm | 2 | – | – | 8.2 |
| July | 19°C | 18°C | 2 mm | 1 | – | – | 8.5 |
| August | 19°C | 18°C | 4 mm | 1 | – | – | 8.6 |
| September | 19°C | 18°C | 27 mm | 4 | – | – | 8.2 |
| October | 19°C | 17°C | 80 mm | 9 | – | – | 7.3 |
| November | 17°C | 15°C | 95 mm | 11 | – | – | 6.7 |
| December | 15°C | 13°C | 89 mm | 11 | – | – | 6.5 |
Frequently asked questions
How hot is Sintra in December?
Daytime highs average 15°C and nights about 13°C.
When is the best time to visit Sintra?
The best months are August, July, June, September.