Seia Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Seia.
Climate overview of Seia
The climate in Seia, Centro Region, Portugal, is marked by large temperature swings across the seasons, ranging from 29°C (84°F) in August to 11°C (52°F) in January.
The city receives considerable rainfall, with around 1054 mm (41 in) annually. October is the wettest month. It has a distinct dry season from June to August, with warm summers and cold winters. July is the sunniest month, averaging 11.5 hours of sunshine per day.
Seia Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Seia - and find the best time to visit.
Monthly Temperature in Seia
In Seia, temperatures differ significantly between summer and winter months. Typically, average maximum daytime temperatures range from a comfortable 29°C (84°F) in August to a chilly 11°C (52°F) in the coolest month, January.
Nights vary from 15°C (59°F) in August to around 3°C (37°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Seia
Seia experiences significant rainfall throughout the year, averaging 1054 mm (41 in) of precipitation annually. The climate in Seia shows significant variation throughout the year. Expect high rainfall in October, the wettest month, with an average of 144 mm (5.7 in) of precipitation over 13 rainy days.
In contrast, the driest month July offers drier and sunnier days, with around 16 mm (0.6 in) of rainfall over 6 rainy days. For more details, please visit our Seia 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 Seia
For those who appreciate different seasons, Seia serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 11.5 hours of sunshine daily, and embrace the darker days in December, offering only 3.5 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Humidity in Seia by Month
The relative humidity is high throughout the year in Seia.
The city experiences its highest humidity in February, reaching 81%. In August, the humidity drops to its lowest level at 55%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Wind Speed in Seia
The average wind speed over the year ranges from 4 m/s (8 knots) to 6 m/s (12 knots). It is lower in June, July and September and higher in January, February and March. What does this mean?
The mean monthly wind speed over the year (meters per second)
Best Time to Visit Seia
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 and September
- Warmest weather: July and August
- Most sunshine: July and August
- Fewest rainy days: July and August
- Seasonal pattern: A distinct dry season from June to August, with warm summers and cold winters
Frequently asked questions about the climate in Seia
What is the best time to visit Seia?
May, June, July, August and September typically offer the most optimal weather in Seia. In contrast, January and December tend to have less optimal conditions. Seia has a distinct dry season from June to August, with warm summers and cold winters.
What temperatures can I expect in Seia?
Daytime highs range from 11°C (52°F) in January to 29°C (84°F) in August. Nighttime lows range from 3°C (37°F) to 15°C (59°F). Temperatures vary considerably through the year.
How much rain does Seia get?
Annual rainfall is around 1054 mm (41 in). October is the wettest month with 144 mm (5.7 in), while July is the driest with 16 mm (0.6 in).
How sunny is Seia?
Seia receives around 2,427 hours of sunshine per year. July is the sunniest month with 345 hours, while December is the cloudiest with just 105 hours. Overall, Seia enjoys abundant sunshine.
Seia 3-Day Forecast
Seia on the map
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