Climate Insights for Barcelona

The climate in Barcelona is temperate. The average annual temperature is 16°C and approximately 589mm of precipitation falls per year. October is the wettest month, receiving around 99mm of rainfall. Barcelona is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, June. The coldest months are January, February, December, when temperatures can drop to 6°C.

Temperatures in Barcelona vary considerably across the year, with a 22°C difference between the coldest and warmest months. The warmest month is August, when average highs reach 28°C and the mean temperature sits around 25°C. January is the coolest month, with minimum temperatures around 6°C and an average of 9°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows. The sharpest temperature change occurs between October and November, with a 5°C shift in average temperatures.

Barcelona is a relatively dry area, receiving approximately 589mm of precipitation annually, which averages out to around 49mm per month. The wettest month is October, averaging 99mm of rainfall. September and April also tend to see above-average precipitation. The driest month is December, with just 26mm. That's 74mm less than October, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall.

Barcelona is mildly breezy, with an average annual wind speed of 16km/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 18km/h, though still comfortable for most outdoor activities. The calmest conditions occur in December, with average winds dropping to 14km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 4km/h between the calmest and windiest months.

It is currently spring in Barcelona, which began on March 20, 2026. Barcelona 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 28°C, while the coldest stretch bottoms out in January near 6°C. Summer is next, beginning on June 21, 2026 — 90 days from now.

The best time to visit Barcelona is during May, June, July, August, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 21°C with modest rainfall averaging 53mm per month. By contrast, January can be quite cold with temperatures dropping to 6°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 Barcelona 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.