Seixal Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Seixal.
Climate overview of Seixal
Seixal, Lisbon Region, Portugal, experiences significant temperature variation throughout the year. Summers bring daytime highs of 27°C (81°F) in August, while winters cool to 16°C (61°F) in January.
The city receives around 576 mm (23 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. The sunniest month is July, with 11.7 hours of sunshine per day on average.
Seixal Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Seixal - and find the best time to visit.
Monthly Temperature in Seixal
Depending on the time of the year, temperatures range from comfortable to moderate in Seixal. On average, daytime temperatures range from a comfortable 27°C (81°F) in August to a moderate 16°C (61°F) in January.
Nighttime temperatures range from 18°C (64°F) in August to 10°C (50°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Seixal
Generally, Seixal has a moderate amount of precipitation, averaging 576 mm (23 in) of rainfall annually. The seasons in Seixal bring significant changes in precipitation. The wettest month, November, receives moderate rainfall, with an average of 83 mm (3.3 in) of precipitation. This rainfall is distributed across 13 rainy days.
In contrast, the driest month, July, experiences much less rainfall, totaling 3.3 mm (0.1 in) over 2 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Seixal 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 Seixal
In Seixal, summer days are longer and more sunny, with daily sunshine hours peaking at 11.7 hours in July. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 4.7 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
Best Time to Visit Seixal
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May, June, July, August, September and October
- Warmest weather: July, August and September
- Most sunshine: July and August
- 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 Seixal
What is the best time to visit Seixal?
May, June, July, August, September and October typically offer the most optimal weather in Seixal. In contrast, January, February and December tend to have less optimal conditions. Seixal has a distinct dry season from June to September, with warm summers and mild winters.
What temperatures can I expect in Seixal?
Daytime highs range from 16°C (61°F) in January to 27°C (81°F) in August. Nighttime lows range from 10°C (50°F) to 18°C (64°F). Temperatures vary considerably through the year.
How much rain does Seixal get?
Annual rainfall is around 576 mm (23 in). November is the wettest month with 83 mm (3.3 in), while July is the driest with 3.3 mm (0.1 in).
How sunny is Seixal?
Seixal receives around 2,828 hours of sunshine per year. July is the sunniest month with 352 hours, while December is the cloudiest with just 141 hours. Overall, Seixal enjoys abundant sunshine.
Seixal 3-Day Forecast
Seixal 3-Day Forecast
Seixal on the map
Seixal is highlighted - select any city to see its climate.
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