Sintra Weather & Climate: Best Time to Visit
Temperatures in Sintra, Lisbon Region, Portugal, shift moderately through the seasons. The warmest month is August at 23°C (73°F), and the coolest is January at 15°C (59°F).
With around 639 mm (25 in) of annual rainfall, the city has moderate precipitation levels. November is the wettest month and July the driest. It also has a distinct dry season from June to September. July is the sunniest month, averaging 12.8 hours of sunshine per day.
Monthly Temperature in Sintra
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
Rainfall in Sintra
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
Sunshine Hours in Sintra
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
Humidity in Sintra by Month
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
Sintra 3-Day Forecast
Check the conditions for any month of the year.
