São João do Estoril Weather in September

São João do Estoril in September averages 22°C (72°F) during the day and 18°C (64°F) at night. Some rainfall is typical for this time of year.

Rainfall in São João do Estoril in September

Based on our climate data of the past 30 years, about 6 days of rain are anticipated, with 31 mm (1.2 in) on average. The odd shower may pass through, but it usually doesn't amount to much. A largely dry month overall.

Temperature in São João do Estoril in September

Weather in São João do Estoril is at its perfect in September. Highs reach 22°C (72°F), while nights settle around 18°C (64°F). Overall, the month follows a fairly predictable daily temperature pattern. Nights cool down to 18°C (64°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in São João do Estoril in September

Expect a lot of sunshine this month, with about 278 hours of sun. These sunny conditions add to the overall experience.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. June, July, August, September and October typically offer the best weather for São João do Estoril.

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For a detailed overview over the year and the best time to visit Portugal, check out our São João do Estoril's climate page.

São João do Estoril Temperature in September

Min Temperature 18°C (64°F)  

Max Temperature 22°C (72°F)  

Chance of Rain 20%  

Precipitation 31 mm (1.2 in)  

Rainy days 6 days  

Humidity 75% *  

Sunshine 278 hours *  

Percentage Sunshine 75% *  

* Data from: Cascais, Portugal (3 KM, 1 Miles).

What to Wear in São João do Estoril in September

Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Pack a light rain jacket or compact umbrella for occasional showers. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in São João do Estoril in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Cycling

10/10

Walking

10/10

Barbeque

9/10

Camping

10/10

Outdoor sports

10/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Portugal, check out our São João do Estoril's climate page.

More climate data for São João do Estoril

Temperature Rainfall Sunshine Humidity

See the full São João do Estoril climate overview or explore weather in Portugal.