July
★ Best time
25° / 17°C
1 rain days
warm, dry
- comfortable temperatures (avg high 25°C / 77°F)
- very low rainfall (only 1 rain days)
- warm evenings without humidity overload
Best time to visit Sintra
Sintra, Portugal — ranked month by month from data: temperature, rainfall, snow, and peak hazard seasons. The standouts: July, August, June.
★ Best months to visit
August
★ Best time
25° / 17°C
1 rain days
warm, dry
- comfortable temperatures (avg high 25°C / 77°F)
- very low rainfall (only 1 rain days)
- warm evenings without humidity overload
June
★ Best time
23° / 15°C
5 rain days
warm
- comfortable temperatures (avg high 23°C / 73°F)
- very low rainfall (only 5 rain days)
- warm evenings without humidity overload
September
★ Best time
24° / 16°C
7 rain days
warm
- comfortable temperatures (avg high 24°C / 75°F)
- manageable rain (7 days)
- warm evenings without humidity overload
May
★ Best time
20° / 13°C
10 rain days
mild, rainy
- comfortable temperatures (avg high 20°C / 68°F)
- manageable rain (10 days)
March
★ Best time
18° / 10°C
11 rain days
mild, rainy
- comfortable temperatures (avg high 18°C / 64°F)
April
★ Best time
18° / 11°C
11 rain days
mild, rainy
- comfortable temperatures (avg high 18°C / 64°F)
October
★ Best time
21° / 14°C
11 rain days
mild, rainy
- comfortable temperatures (avg high 21°C / 70°F)
- warm evenings without humidity overload
November
★ Best time
17° / 11°C
12 rain days
mild, rainy
February
★ Best time
16° / 9°C
11 rain days
mild, rainy
January
★ Best time
15° / 8°C
12 rain days
cool, rainy
December
★ Best time
15° / 9°C
12 rain days
cool, rainy
How we ranked these
Each month is scored on temperature comfort (18–27°C avg high is the sweet spot), rainfall (more rain days = lower score), snow days, and peak hazard seasons (hurricanes, monsoons, etc.). Green-tier months are within ideal range with no major issues. Yellow are workable but with trade-offs. Red has at least one significant problem — extreme heat or cold, heavy rain, or peak storm season.