Aveiro weather in August
Temperature, sea and sunshine in August: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in August
Good
Best time to visit: June – September
What is the weather like in Aveiro in August?
In August, Aveiro is hot: daytime highs average 27 °C, and nights cool down to about 17 °C. The sea averages 18.2 °C – bracing, so a wetsuit helps for longer swims. With around 10 hours of sunshine a day, there is plenty of sun. Rain is rare: about 3 days bring 14 mm in total. On about 7 days the thermometer climbs to 30 °C or more. All in all, August is a good month for a holiday in Aveiro.
August compared
How the weather changes from July to September. Tap a month to open it.
| JulyJul | AugustAug | SeptemberSep | |
|---|---|---|---|
| Score | 78 | 79 | 73 |
| Day | 27° | 27° | 25° |
| Night | 17° | 17° | 16° |
| Sea | 18° | 18° | 18° |
| Sun | 10 h | 10 h | 8 h |
| Rain days | 3 | 3 | 6 |
More details for August
- Daylight
- 13 h 50 min06:44 – 20:35
- UV index
- 8 · very highclear sky, noon (estimate)All months
- Muggy days
- 3 daysdew point 18 °C or moreAll months
- Wind
- 22 km/haverage daily peakAll months
- Cloud cover
- 33 %on averageAll months
- Hot days
- 7 days30 °C or moreAll months
- Time zone
- UTC+1Europe/Lisbon
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %17 %
- Sunshineweight 20 %100 %
- Few rainy daysweight 20 %100 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in August
- Wetsuit for longer swims
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
Aveiro in August: quick answers
Is Aveiro hot in August?
Yes. In August, Aveiro is hot: daytime highs average 27 °C and nights stay around 17 °C. On about 7 days the thermometer climbs to 30 °C or more.
Can you swim in Aveiro in August?
Only if you don't mind cold water: in August the sea averages just 18.2 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Aveiro in August?
Rain is rare: about 3 days bring 14 mm in total.
Aveiro month by month
The whole year in AveiroAll destinations: PortugalWhere to go in AugustSea temperature in August
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences