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Barcelona weather by month
Historical averages 2016–2025 · not a forecast
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When is the best time to visit Barcelona?
For a warm holiday, the best week has been 20–26 June (Weather Index 97). Favourable start dates for a 7-day trip run from 12 June to 4 July. July and August are warmest (29°C), January and July are driest and May, June and July have the most sun.
- Warmest
- July and August 29°C
- Coolest
- January 14°C
- Driest
- January and July 16% rain-day chance
- Wettest
- September 38% rain-day chance
- Sunniest
- May, June and July 13 hours a day
A rain day has 1 mm or more, snow included, so a short shower counts. Monthly averages below give the amounts.
Monthly averages in Barcelona
Barcelona historical monthly estimates, 2016–2025. Temperatures and sunshine are daily averages.
| Month | High (°C) | Low (°C) | Rain-day chance (%) | Expected rain days | Precipitation (mm/month) | Sunshine (hours/day) |
|---|---|---|---|---|---|---|
| January | 13.8 | 6.5 | 15.8 | 4.9 | 42.9 | 8.0 |
| February | 15.2 | 7.6 | 25.7 | 7.2 | 40.2 | 8.7 |
| March | 16.2 | 9.1 | 28.4 | 8.8 | 52.9 | 10.0 |
| April | 18.1 | 11.0 | 27.7 | 8.3 | 65.4 | 11.1 |
| May | 21.5 | 14.5 | 27.1 | 8.4 | 43.5 | 12.8 |
| June | 26.2 | 19.1 | 17.3 | 5.2 | 24.7 | 13.2 |
| July | 28.8 | 22.0 | 15.8 | 4.9 | 29.4 | 13.4 |
| August | 29.1 | 22.3 | 22.6 | 7.0 | 47.1 | 12.5 |
| September | 25.7 | 19.3 | 37.7 | 11.3 | 76.2 | 10.5 |
| October | 22.2 | 16.0 | 31.6 | 9.8 | 97.9 | 9.0 |
| November | 17.5 | 11.0 | 28.0 | 8.4 | 53.5 | 8.0 |
| December | 14.9 | 8.1 | 17.4 | 5.4 | 34.4 | 7.7 |
Each month averages its own days. Precipitation includes snow. About the data
Sources
Open-Meteo · 1 Jan 2016 – 31 Dec 2025
- Open-Meteo Historical Weather API
- Local days, 2016–2025, every year weighted equally. Each weekly chart averages its own seven days, without smoothing.
- Shading shows the 10th–90th percentile of past days, not forecast confidence.
- A rain day has at least 1 mm, snow included. The last weekly period has eight days.
- Wind is the average daytime (10:00–18:00) maximum, not gusts. Daylight is calculated from latitude. Missing readings stay blank.
- Mugginess (dew point) comes from the original daily summaries, on UTC days.
- The live two-week forecast comes from the Open-Meteo Weather Forecast API. The Weather Index does not use it.