Climate Insights for Aveiro

The climate in Aveiro is temperate. The average annual temperature is 16°C and approximately 987mm of precipitation falls per year. November is the wettest month, receiving around 152mm of rainfall. Aveiro is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are January, February, December, when temperatures can drop to 9°C.

Aveiro sees moderate temperature variation throughout the year, ranging from 9°C to 24°C. August is the warmest month, though highs remain moderate at 24°C with a mean of 20°C. January is the coolest month, with minimum temperatures around 9°C and an average of 11°C. Daily temperature variation is modest, with an average difference of 6°C between highs and lows. The sharpest temperature change occurs between October and November, with a 3°C shift in average temperatures.

Aveiro is a moderately rainy area, receiving approximately 987mm of precipitation annually, which averages out to around 82mm per month. The wettest month is November, averaging 152mm of rainfall. April and December also tend to see above-average precipitation. The driest month is August, with just 11mm. That's 140mm less than November, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Aveiro is relatively calm, with an average annual wind speed of 4km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is March, averaging 5km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 4km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.

It is currently summer in Aveiro, which began on June 21, 2026. Aveiro is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in August at around 24°C, while the coldest stretch bottoms out in January near 9°C. Autumn is next, beginning on September 23, 2026 — 92 days from now.

The best time to visit Aveiro is during May, June, July, August, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 42mm per month. By contrast, January can be quite cold with temperatures dropping to 9°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Aveiro based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.