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August in Setúbal averages 28°C (82°F) during the day and 18°C (64°F) at night. With only 4.8 mm (0.2 in) of rainfall expected on average, it's a largely dry month.
If your ideal day consists of dry skies and pleasant temperatures, April, May, June, July, August, September and October typically offer the best circumstances for Setúbal.
Pick a month to see the average temperature, rainfall and sunshine in Setúbal - and find the best time to visit.
50-year average (1976-2025)
Based on our historical records, temperatures in Setúbal typically stay consistent throughout August, with daily highs averaging around 28°C (82°F). Nights are pleasant, with lows around 18°C (64°F).
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Browse day-by-day weather records for Setúbal spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Based on 50 years of weather observations in Setúbal between 1976 and 2026, these are the recorded extremes.
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 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).
Warm weather calls for comfortable, breathable clothing in August. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Almost no rain is expected, so no need to bring rain gear. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
See the full Setúbal climate overview or explore weather in Portugal.
Where to go in August - average daytime high across popular destinations.
Need travel inspiration? Check out our bucket list articles and be inspired.
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