Santiago do Cacém Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Santiago do Cacém.
Climate overview of Santiago do Cacém
Temperatures in Santiago do Cacém, Alentejo, Portugal, vary greatly throughout the year. August is the hottest month at 28°C (82°F), while January is the coldest at 16°C (61°F).
The city receives around 562 mm (22 in) of rainfall per year. It experiences a distinct dry season from June to September, with warm summers and mild winters. November is the wettest month and July the driest. July is the sunniest month, averaging 12.3 hours of sunshine per day.
Santiago do Cacém Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Santiago do Cacém - and find the best time to visit.
Monthly Temperature in Santiago do Cacém
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
Rainfall in Santiago do Cacém
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
Sunshine Hours in Santiago do Cacém
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
Humidity in Santiago do Cacém by Month
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
Best Time to Visit Santiago do Cacém
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: April, May, June, July, August, September and October
- Warmest weather: July and August
- Most sunshine: July
- Fewest rainy days: July and August
- Seasonal pattern: A distinct dry season from June to September, with warm summers and mild winters
Frequently asked questions about the climate in Santiago do Cacém
What is the best time to visit Santiago do Cacém?
April, May, June, July, August, September and October typically offer the most optimal weather in Santiago do Cacém. In contrast, January, February and December tend to have less optimal conditions. Santiago do Cacém has a distinct dry season from June to September, with warm summers and mild winters.
What temperatures can I expect in Santiago do Cacém?
Daytime highs range from 16°C (61°F) in January to 28°C (82°F) in August. Nighttime lows range from 8°C (46°F) to 17°C (63°F). Temperatures vary considerably through the year.
How much rain does Santiago do Cacém get?
Annual rainfall is around 562 mm (22 in). November is the wettest month with 78 mm (3.1 in), while July is the driest with 2.5 mm (0.1 in).
How sunny is Santiago do Cacém?
Santiago do Cacém receives around 2,932 hours of sunshine per year. July is the sunniest month with 370 hours, while December is the cloudiest with just 148 hours. Overall, Santiago do Cacém enjoys abundant sunshine.
Santiago do Cacém 3-Day Forecast
Santiago do Cacém on the map
Santiago do Cacém is highlighted - select any city to see its climate.
Popular this month
Where to go in September - average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
7 of the most budget-friendly destinations in Europe
Discover Europe's top budget-friendly destinations including Budapest, Kotor, Krakow, and more, perfect for affordable and exciting travel.
Alentejo, where time stands still
The quiet region is known for its rolling green hills and it is a true hiking paradise. Architectural highlights can be found in the castles, ancient monasteries or when exploring the countless charming villages.
An eco-friendly guide to Lagos travel
Lagos, Portugal is a great place to visit while being careful about your environmental footprint. Here you find some tips about environmentally places to stay, where to eat and how to get around in the area.
What to do in Lisbon: our tips for an unforgettable city trip
Lisbon is a bustling city with many special places. In this article you find the best sights, good restaurants and nice places to stay in Lisbon.