Santiago do Cacém Weather & Climate: Best Time to Visit

The climate in Santiago do Cacém is known for significant temperature differences throughout the year, making the weather dynamic. On average, daytime temperatures range from a comfortable 28°C (82°F) in August to a moderate 16°C (61°F) in January.

Nighttime temperatures range from 17°C (63°F) in August to 8°C (46°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Generally, Santiago do Cacém receives mid-range precipitation levels, with 562 mm (22 in) annually. The seasons in Santiago do Cacém bring significant changes in precipitation. The wettest month, November, receives moderate rainfall, with an average of 78 mm (3.1 in) of precipitation. This rainfall is distributed across 11 rainy days.

In contrast, the driest month, July, experiences much less rainfall, totaling 2.5 mm (0.1 in) over a single rainy day. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Santiago do Cacém Precipitation page.

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

The average number of days each month with precipitation

In Santiago do Cacém, summer days are longer and more sunny, with daily sunshine hours peaking at 12.3 hours in July. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 4.9 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 relative humidity is high throughout the year in Santiago do Cacém.

The city experiences its highest humidity in January, reaching 81%. In July, the humidity drops to its lowest level at 50%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year