Climate averages 1991–2020
Barcelona weather
in August.
A warm, moderately wet month: the warmest and the joint 4th 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 Barcelona: daytime highs average 27.4°C and nights cool to about 20.7°C. By daytime temperature it is the warmest month of the year.
Expect about 40 mm of rain on roughly 7 days, which makes August a moderately wet month (the joint 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 50 min on an average August day.
The nearest other city in this atlas is Badalona (10 km away). In August its highs average 28.0°C, 0.6°C warmer than Barcelona, with 40 mm of rain.
Among the 93 cities listed in Spain, Barcelona ranks 66th of 93 for the warmest August highs and joint 72nd of 93 for the driest August (rainfall, lowest first). The mean August high of those 93 cities is 29.3°C; Barcelona is 1.9°C cooler than that mean.
From August to September, average highs fall by 3.5°C to 23.9°C, and monthly rainfall rises from 40 mm to 77 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
Barcelona climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 12.4°C5.1°C | 5.1°C | 40 | 6.1 | 9.610 h |
| February | 13.1°C5.4°C | 5.4°C | 36 | 6.3 | 10.611 h |
| March | 15.3°C7.4°C | 7.4°C | 40 | 6.7 | 11.912 h |
| April | 17.3°C9.5°C | 9.5°C | 52 | 8.2 | 13.313 h |
| May | 20.6°C13.1°C | 13.1°C | 45 | 7.4 | 14.514 h |
| June | 24.5°C17.1°C | 17.1°C | 34 | 5.6 | 15.115 h |
| July | 27.2°C20.1°C | 20.1°C | 25 | 4.7 | 14.815 h |
| August, selected | 27.4°C20.7°C | 20.7°C | 40 | 6.6 | 13.814 h |
| September | 23.9°C17.8°C | 17.8°C | 77 | 10.5 | 12.513 h |
| October | 20.3°C14.4°C | 14.4°C | 90 | 9.9 | 11.111 h |
| November | 15.9°C9.4°C | 9.4°C | 60 | 8.0 | 9.910 h |
| December | 13.0°C6.2°C | 6.2°C | 41 | 5.7 | 9.29 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
- Badalona in AugustSpain · 10 kmHigh 28.0°C · Low 20.6°C · 40 mm rain
- Sant Boi de Llobregat in AugustSpain · 11 kmHigh 26.8°C · Low 21.3°C · 44 mm rain
- Rubí in AugustSpain · 16 kmHigh 27.9°C · Low 19.6°C · 50 mm rain
- Sabadell in AugustSpain · 18 kmHigh 27.3°C · Low 19.4°C · 50 mm rain
- Terrassa in AugustSpain · 23 kmHigh 27.7°C · Low 18.7°C · 50 mm rain
- Mataró in AugustSpain · 29 kmHigh 27.1°C · Low 21.0°C · 43 mm rain
- Manresa in AugustSpain · 47 kmHigh 29.4°C · Low 18.3°C · 73 mm rain
- Tarragona in AugustSpain · 82 kmHigh 28.8°C · Low 20.4°C · 40 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 Barcelona) is explained once on the Barcelona year overview and on the Sources, method and limits page.
Badalona lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.