Sines Weather & Climate: Best Time to Visit
The climate in Sines, Alentejo, Portugal, sees a moderate range of temperatures across the year, from 25°C (77°F) in August down to 16°C (61°F) in January.
Sines sees a moderate amount of rainfall, totalling around 580 mm (23 in) per year. It experiences a distinct dry season from May to September, creating some seasonal variation.
Monthly Temperature in Sines
The climate in Sines experiences moderate temperature changes, with mild shifts between seasons. Average maximum daytime temperatures range from a comfortable 25°C (77°F) in August, the warmest time of the year, to a moderate 16°C (61°F) during cooler months like January.
At night, you can expect temperatures ranging from 18°C (64°F) in August to around 10°C (50°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Sines
On average, Sines receives a reasonable amount of rainfall, with an annual precipitation of 580 mm (23 in). Significant seasonal changes in precipitation occur throughout the year. In the wettest month, December it receives moderate rainfall, averaging 85 mm (3.3 in) of precipitation, recorded across 13 rainy days. In contrast, the driest month July brings less rainfall, with 2.5 mm (0.1 in) over a single rainy day. For more details, please visit our Sines Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sines 3-Day Forecast
Check the conditions for any month of the year.
