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Olhão in August sees high daytime temperatures of 27°C (81°F) and nighttime lows of 21°C (70°F). With just 2.6 mm (0.1 in) of rainfall expected, it's a dry month overall.
Our weather planner can help you find worldwide destinations with pleasant weather during this period. May, June, July, August, September and October typically offer the best weather for Olhão.
Pick a month to see the average temperature, rainfall and sunshine in Olhão - and find the best time to visit.
50-year average (1976-2025)
Based on our historical records, temperatures in Olhão typically stay consistent throughout August, with daily highs averaging around 27°C (81°F). Nights are pleasant, with lows around 20°C (68°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 Olhão spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
The extremes listed below come from historical weather data collected in Olhão from 1976 through 2026.
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 temperatures in August make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. With minimal rainfall expected, you can leave the rain gear at home. Expect water temperatures of around 20°C (68°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. 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.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Olhão climate overview or explore weather in Portugal.
Where to go in August - average daytime high across popular destinations.
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