Santarém Weather & Climate: Best Time to Visit

The climate in Santarém is known for significant temperature differences throughout the year, making the weather dynamic. On average, daytime temperatures range from a very warm 31°C (88°F) in August to a moderate 15°C (59°F) in January.

Nighttime temperatures range from 17°C (63°F) in August to 7°C (45°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Generally, Santarém receives mid-range precipitation levels, with 614 mm (24 in) annually. The seasons in Santarém bring significant changes in precipitation. The wettest month, November, receives moderate rainfall, with an average of 82 mm (3.2 in) of precipitation. This rainfall is distributed across 13 rainy days.

In contrast, the driest month, July, experiences much less rainfall, totaling 4.5 mm (0.2 in) over 3 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Santarém Precipitation page.

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

The average number of days each month with precipitation

In Santarém, summer days are longer and more sunny, with daily sunshine hours peaking at 8.5 hours in August. As the darker season arrives, the brightness of the sun becomes less. February sees a soft sun for only 4.1 hours per average day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

The city experiences its highest humidity in August, reaching 89%. In March, the humidity drops to its lowest level at 80%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year