Sintra · WinterMonth summary
Sintra weather in December
⚠️ Fair
🌡️ Temperature min / max
50°F – 59°F
🌧 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: Not the best window: 38% rain risk and 8.7h of sunshine. August is much safer.
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
In December, Sintra sees 15°F 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 °F | Max °F | Rain % | Precip in | Sun h/d | Score |
|---|---|---|---|---|---|---|
| ⛅ January | 46°F | 57°F | 33% | 0.1in | 9.0h | 6.0/10 |
| ⛅ February | 48°F | 59°F | 31% | 0.1in | 9.8h | 7.0/10 |
| 🌦️ March | 48°F | 59°F | 40% | 0.1in | 10.7h | 6.7/10 |
| 🌦️ April | 52°F | 63°F | 40% | 0.1in | 12.1h | 7.1/10 |
| 🌤️ May | 55°F | 68°F | 24% | 0.1in | 13.0h | 7.8/10 |
| 🌤️ June | 59°F | 70°F | 23% | 0.0in | 13.9h | 8.2/10 |
| 🌤️ July | 61°F | 73°F | 6% | 0.0in | 13.8h | 9.0/10 |
| 🌤️ August | 63°F | 75°F | 4% | 0.0in | 12.9h | 9.1/10 |
| 🌤️ September | 61°F | 73°F | 17% | 0.0in | 11.2h | 8.3/10 |
| 🌤️ October | 59°F | 70°F | 34% | 0.1in | 10.3h | 7.4/10 |
| 🌦️ November | 52°F | 63°F | 45% | 0.1in | 8.8h | 6.7/10 |
| ⛅ December | 50°F | 59°F | 38% | 0.1in | 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 59°F, 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°F
- 🌧 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 59°F max and 8.7h of sunshine, focus on cultural sites, museums and local gastronomy.
Accommodation
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Activities & tours
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