Sintra Weather & Climate: Best Time to Visit

The climate in Sintra experiences moderate temperature changes, with mild shifts between seasons. Typically, average maximum daytime temperatures range from a comfortable 23°C (73°F) in August to a moderate 15°C (59°F) in the coolest month, January.

Nights vary from 18°C (64°F) in August to around 11°C (52°F) during the colder months.

Check out our detailed temperature page for more information.

Temperature ranges by month

Generally, Sintra receives mid-range precipitation levels, with 639 mm (25 in) annually. The climate in Sintra shows significant variation throughout the year. Expect moderate rainfall in November, the wettest month, with an average of 96 mm (3.8 in) of precipitation over 13 rainy days.

In contrast, the driest month July offers drier and sunnier days, with around 3.7 mm (0.1 in) of rainfall over 2 rainy days. For more details, please visit our Sintra Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

For those who appreciate different seasons, Sintra serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 12.8 hours of sunshine daily, and embrace the darker days in December, offering only 5.4 hours of daily sunlight.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

The relative humidity is high throughout the year in Sintra.

The city experiences its highest humidity in January, reaching 82%. In July, the humidity drops to its lowest level at 71%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year