Sintra · WinterMonth summary
Sintra weather in December
⚠️ Fair
🌡️ Temperature min / max
10°C – 15°C
🌧 Rainy days
38% of days
☀️ Sunshine
8.7h per day on average
🌊 🌊 Season
Winter
⭐ ⭐ Weather score
6.0/10
📅 📅 Best month
August (9.1/10)
Quick decision
Should you visit Sintra in December?
⚠️ Fair
✅ Yes if: you want to explore the city on foot without suffering from heat.
❌ No if: you're looking for a beach destination — water and air are still cool.
Our take: December is an average time for Sintra. August (9.1/10) is clearly preferable.
By trip type
Sintra in December by trip type
- 🏙️ 🏙️ City break / culture : ⚠️ Possible
- 🚶 🚶 Outdoor activities : ⚠️ Possible
- 🏖️ Beach / swimming : ❌ Not recommended
- 💰 💰 Budget : ✅ Low season
Local context
What to expect in December
🎯 Low season — 15°C and limited conditions. Upside: lower prices and few tourists In December, Sintra sees 15°C during the day with 8.7h of sunshine per day. Expect rain on 38% of days — a light raincoat in the bag is recommended. Not the best window, but acceptable if dates are constrained. August (9.1/10) is significantly better if possible.
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All months for Sintra
Annual table
Month-by-month comparison
| Month | Min °C | Max °C | Rain % | Precip mm | Sun h/d | Score |
|---|---|---|---|---|---|---|
| ⛅ January | 8°C | 14°C | 33% | 3.0 | 9.0h | 6.0/10 |
| ⛅ February | 9°C | 15°C | 31% | 2.4 | 9.8h | 7.0/10 |
| 🌦️ March | 9°C | 15°C | 40% | 3.6 | 10.7h | 6.7/10 |
| 🌦️ April | 11°C | 17°C | 40% | 2.9 | 12.1h | 7.1/10 |
| 🌤️ May | 13°C | 20°C | 24% | 1.7 | 13.0h | 7.8/10 |
| 🌤️ June | 15°C | 21°C | 23% | 1.0 | 13.9h | 8.2/10 |
| 🌤️ July | 16°C | 23°C | 6% | 0.2 | 13.8h | 9.0/10 |
| 🌤️ August | 17°C | 24°C | 4% | 0.1 | 12.9h | 9.1/10 |
| 🌤️ September | 16°C | 23°C | 17% | 1.1 | 11.2h | 8.3/10 |
| 🌤️ October | 15°C | 21°C | 34% | 2.8 | 10.3h | 7.4/10 |
| 🌦️ November | 11°C | 17°C | 45% | 3.7 | 8.8h | 6.7/10 |
| ⛅ December | 10°C | 15°C | 38% | 3.4 | 8.7h | 6.0/10 |
Ideal
Fair
Challenging climate
◀ Current month · Source Open-Meteo · 10 years
📊 Data source
Data based on 10 years of ERA5 records via Open-Meteo, with ECMWF seasonal adjustment. In December, Sintra averages 15°C, 38% rainy days and 8.7h of sunshine per day. Overall weather score: 6.0/10.
See methodology →
Comparison
December vs August (best month)
The best month is August (score 9.1/10). Difference:
- 🌡️ Max temperature : +9°C
- 🌧 Rainy days : -34%
- ☀️ Sunshine : +4.2h/day
FAQ
FAQ — Sintra in December
Is December a good time to visit Sintra?
December is an acceptable time for Sintra (score 6.0/10). Conditions are decent but not optimal — consider August (9.1/10) if possible.
What to do in Sintra in December?
With 15°C max and 8.7h of sunshine, focus on cultural sites, museums and local gastronomy.
Accommodation
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Activities & tours
Activities and tours in Sintra
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