Climate averages 1991–2020
Aveiro weather
in August.
A warm, fairly dry month: the warmest and the 2nd driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in Aveiro: daytime highs average 27.3°C and nights cool to about 17.2°C. By daytime temperature it is the warmest month of the year.
Expect about 17 mm of rain on roughly 3 days, which makes August a fairly dry month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 47 min on an average August day.
The nearest other city in this atlas is Coimbra (52 km away). In August its highs average 28.9°C, 1.6°C warmer than Aveiro, with 14 mm of rain.
Among the 12 cities listed in Portugal, Aveiro ranks 4th of 12 for the warmest August highs and 9th of 12 for the driest August (rainfall, lowest first). The mean August high of those 12 cities is 26.8°C; Aveiro is 0.5°C warmer than that mean.
From August to September, average highs fall by 2.2°C to 25.1°C, and monthly rainfall rises from 17 mm to 51 mm.
The annual picture
August in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Aveiro climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 13.5°C6.5°C | 6.5°C | 128 | 12.1 | 9.610 h |
| February | 14.7°C6.8°C | 6.8°C | 88 | 9.4 | 10.611 h |
| March | 17.3°C8.6°C | 8.6°C | 95 | 9.9 | 11.912 h |
| April | 18.5°C10.1°C | 10.1°C | 98 | 10.9 | 13.313 h |
| May | 21.2°C12.7°C | 12.7°C | 79 | 9.6 | 14.414 h |
| June | 24.5°C15.3°C | 15.3°C | 26 | 5.0 | 15.015 h |
| July | 26.8°C16.8°C | 16.8°C | 12 | 2.7 | 14.815 h |
| August, selected | 27.3°C17.2°C | 17.2°C | 17 | 3.4 | 13.814 h |
| September | 25.1°C15.8°C | 15.8°C | 51 | 6.0 | 12.513 h |
| October | 21.0°C13.4°C | 13.4°C | 143 | 12.0 | 11.211 h |
| November | 16.4°C9.8°C | 9.8°C | 145 | 12.7 | 10.010 h |
| December | 14.3°C7.6°C | 7.6°C | 141 | 12.2 | 9.39 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
August in nearby cities
- Coimbra in AugustPortugal · 52 kmHigh 28.9°C · Low 16.5°C · 14 mm rain
- Porto in AugustPortugal · 56 kmHigh 26.2°C · Low 17.2°C · 29 mm rain
- Viseu in AugustPortugal · 62 kmHigh 27.9°C · Low 15.8°C · 26 mm rain
- Leiria in AugustPortugal · 101 kmHigh 27.1°C · Low 16.9°C · 9.6 mm rain
- Braga in AugustPortugal · 102 kmHigh 26.4°C · Low 15.4°C · 39 mm rain
- Vigo in AugustSpain · 177 kmHigh 23.9°C · Low 16.1°C · 49 mm rain
- Pontevedra in AugustSpain · 199 kmHigh 25.4°C · Low 16.4°C · 48 mm rain
- Ourense in AugustSpain · 199 kmHigh 27.1°C · Low 15.4°C · 27 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Aveiro) is explained once on the Aveiro year overview and on the Sources, method and limits page.