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Town in Lisbon, Portugal

Sintra weather by month and the best time to visit

Updated October 2026Sources
Apr–Jun, Sep–OctBest time to visit

When to go to Sintra

Spring and early autumn are mild and less crowded. July–August is hot and packed; winter is damp, foggy and quiet, with cheaper stays.

Sintra weather by month

Average daily high, rainfall and conditions.

PleasantHotRainyCool or coldBest months
5°10°15°20°25°JFMAMJJASOND
Average highAverage lowRainfall

Monthly averages

MonthHighLowRainHumidityConditions
January13°C56°F8°C46°F73 mm84%Cool
February14°C57°F8°C46°F53 mm81%Cool
March15°C60°F9°C48°F63 mm80%Cool
April17°C62°F10°C51°F58 mm78%Cool
May19°C67°F12°C54°F34 mm77%Pleasant
June22°C71°F14°C58°F13 mm77%Pleasant
July23°C73°F16°C60°F4 mm78%Pleasant
August24°C74°F16°C61°F8 mm78%Pleasant
September23°C73°F15°C60°F26 mm78%Pleasant
October20°C68°F14°C57°F84 mm80%Pleasant
November16°C61°F11°C51°F93 mm82%Cool
December14°C57°F8°C47°F67 mm84%Cool

Best months across Portugal

PlaceBest monthsWarmest month
LisbonApr–Jun, Sep–OctAug (23°C)
PortoMay–Jun, Sep–OctAug (24°C)
AlgarveMay–Jun, Sep–OctJul (28°C)
MadeiraMay–Jul, Sep–OctAug (23°C)
SintraApr–Jun, Sep–OctAug (24°C)
LagosMay–Jun, Sep–OctAug (24°C)
AlbufeiraMay–Jun, Sep–OctJul (28°C)
CascaisMay–Jul, Sep–OctAug (23°C)
AzoresJun–SepAug (24°C)
FaroApr–Jun, Sep–OctJul (28°C)
EriceiraMay–Jun, Sep–OctAug (24°C)
CoimbraApr–Jun, Sep–OctAug (34°C)
Douro ValleyApr–May, Sep–OctAug (34°C)
ÉvoraMar–May, Oct–NovAug (34°C)
BragaMay–Jun, Sep–OctAug (31°C)
AveiroMay–Jul, Sep–OctAug (26°C)
NazaréMay–Jun, Sep–OctAug (22°C)
Silver CoastMay–Jun, Sep–OctAug (22°C)
TaviraMay–Jun, Sep–OctAug (28°C)

Quick answers

What is the best month to visit Sintra?

Apr–Jun, Sep–Oct. Spring and early autumn are mild and less crowded. July–August is hot and packed; winter is damp, foggy and quiet, with cheaper stays.

When is the rainy season in Sintra?

Rain peaks in November with about 93 mm. No month averages 150 mm or more.

What is the hottest month in Sintra?

August, with average highs of 24°C (74°F).

How cold does Sintra get?

The coolest nights are in February, averaging 8°C (46°F).

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Sources

Climate averages are modelled from NASA POWER (MERRA-2) for 2001–2020 at about 50 km resolution, so coasts and valleys can differ a little. Temperatures are adjusted by 0.9°C for the city's elevation. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.