Estoril Weather in September
September in Estoril brings high temperatures, with daytime highs of 22°C (72°F) and nights around 18°C (64°F). The perfect weather makes it a solid choice for a visit.
Rainfall in Estoril in September
You can expect rain on roughly 6 days based on historical data, averaging 31 mm (1.2 in) for the month. Rain is scarce this month and when it does fall, it tends to be light. Unlikely to disrupt plans significantly.
Temperature in Estoril in September
September in Estoril is generally perfect, with days reaching 22°C (72°F) and nights settling around 18°C (64°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. Nights drop to around 18°C (64°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.
Sunshine in Estoril in September
The city usually sees around 278 hours of sunlight, indicating many sunny days — a great month for sightseeing.So this is a great month to visit if you prefer dry days with pleasant temperatures.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Portugal, check out our Estoril's climate page.
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% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Estoril typically stay consistent throughout September, with daily highs averaging around 22°C (72°F). Nights are pleasant, with lows typically ranging from 16°C (61°F) to 18°C (64°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Estoril in September
Browse day-by-day weather records for Estoril spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Estoril historical weather extremes in September
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Estoril.
- The hottest September day on record in Estoril reached 39°C (102°F) (September 4, 2006).
- The coldest September day was on September 26, 1992, with a maximum of 18°C (64°F).
- Estoril registered its coldest September night on September 21, 2000, with temperatures dropping to 11°C (52°F).
Best Places in Portugal in September
Find out more about the weather in Portugal and which places have the best travel conditions in this month. See all of Portugal in September →
perfect weather
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unpleasant
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What to Wear in Estoril in September
Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Light rain is possible, so consider bringing a small umbrella or rain jacket. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Estoril in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Portugal, check out our Estoril's climate page.
Temperature Rainfall Sunshine Humidity
See the full Estoril climate overview or explore weather in Portugal.
