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Estoril Weather in August
August in Estoril brings high temperatures, with daytime highs of 23°C (73°F) and nights around 18°C (64°F). Only 5.1 mm (0.2 in) of rainfall is typical, making it a largely dry month.
Rainfall in Estoril in August
Records from the past 30 years suggest around 2 days of rain, with 5.1 mm (0.2 in) average for the month. The odd shower may pass through, but it usually doesn't amount to much. A largely dry month overall.
Temperature in Estoril in August
Weather in Estoril is at its excellent in August. Highs reach 23°C (73°F), while nights settle around 18°C (64°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. At 18°C (64°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping. On average, it sees the highest temps of the year.
Sunshine in Estoril in August
The month enjoys around 355 hours of sunshine, creating mostly sunny days with good weather conditions.If you're a fan of comfortable temperatures and drier conditions, August is a great time to visit.
Estoril Temperature in August
Min Temperature
18°C (64°F)
Max Temperature
23°C (73°F)
Chance of Rain
7%
Precipitation
5.1 mm (0.2 in)
Rainy days
2 days
Humidity
73% *
Sunshine
355 hours *
Percentage Sunshine
84% *
* Data from: Cascais, Portugal (2 KM, 1 Miles).
Estoril Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Estoril - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Estoril typically stay consistent throughout August, with daily highs averaging around 23°C (73°F). Nights are pleasant, with lows around 18°C (64°F).
Average temperatures in August
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 August
Historical weather records for Estoril in August
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 August
The extremes listed below come from historical weather data collected in Estoril from 1976 through 2026.
- Estoril recorded its highest August temperature of 42°C (108°F) on August 4, 2018.
- The lowest daytime temperature in August was 20°C (68°F), recorded on August 26, 1993.
- The coldest night in August in Estoril was on August 13, 1983, with a minimum of 11°C (52°F).
Best Places in Portugal in August
Find out more about the weather in Portugal and which places have the best travel conditions in this month. See all of Portugal in August →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Estoril in August
Pleasant temperatures in August 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. With minimal rainfall expected, you can leave the rain gear at home. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.
What To Do in Estoril in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling10/10 -
Walking10/10 -
Barbeque9/10 -
Camping10/10 -
Outdoor sports10/10
Estoril 3-Day Forecast
More climate data for Estoril
Temperature Rainfall Sunshine Humidity
See the full Estoril climate overview or explore weather in Portugal.
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