When to go
The Best Time to Visit Sintra
Month-by-month climate data for Sintra, Portugal — daily highs and lows, rain days, and an honest verdict for every month of the year.
April–June, September–October. Mild without August day-tripper crowds; mornings are foggy and atmospheric year-round.
Warmest in Sintra: Jul (25°C / 77°F) · Coolest: Jan (14°C / 57°F) · Wettest: Dec (~13 rain days)
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)
Sintra climate, month by month
January
14° / 8°C
~10 rain days
Good
February
16° / 9°C
~9 rain days
Good
March
17° / 10°C
~12 rain days
Good
April
18° / 11°C
~11 rain days
Excellent
May
21° / 13°C
~8 rain days
Excellent
June
22° / 15°C
~9 rain days
Excellent
July
25° / 16°C
~1 rain days
Excellent
August
25° / 17°C
~1 rain days
Excellent
September
24° / 16°C
~8 rain days
Excellent
October
22° / 15°C
~12 rain days
Excellent
November
18° / 12°C
~11 rain days
Excellent
December
15° / 10°C
~13 rain days
Good
Plan around it
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