Weather risk planner
Weather risk for filming in Barcelona
Three exterior days in Barcelona in September: rain hits at least one with 78 % probability. In January it is 34 %. The tool is set to Barcelona — enter your own days.
- At least one day hit
- 78 %
- Expected lost days
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- Cover days to hold
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- Risk per day
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- Rain days in month
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- Sunshine per day
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- Daylight
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- Mean temperature
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Your shoot, played out 20 times
Same number of days in every month — click a month
- risk of at least one lost day
- sunshine hours per day
| Lost days | Probability | This many or fewer |
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Rain risk in Barcelona, month by month
Barcelona averages 12 rain days in September and 4 in January. A rain day here is any day with at least 1 mm of precipitation, averaged over 2015–2024. The risk columns assume every exterior day can be lost; the cover-day column is what you need to be 90 % sure a five-day exterior block finishes.
| Month | Rain days | 3 days: ≥ 1 hit | 5 days: ≥ 1 hit | Cover days (5 d, 90 %) | Sun/day | Mean temp |
|---|---|---|---|---|---|---|
| January | 4 | 34 % | 50 % | 2 | 7.9 h | 8.6 °C |
| February | 6 | 51 % | 70 % | 2 | 8.7 h | 10.0 °C |
| March | 7 | 54 % | 72 % | 2 | 9.8 h | 11.8 °C |
| April | 9 | 66 % | 83 % | 3 | 10.7 h | 13.9 °C |
| May | 7 | 54 % | 72 % | 2 | 12.3 h | 17.6 °C |
| June | 6 | 49 % | 67 % | 2 | 13.0 h | 22.2 °C |
| July | 4 | 34 % | 50 % | 2 | 13.5 h | 25.2 °C |
| August | 7 | 54 % | 72 % | 2 | 12.2 h | 25.1 °C |
| September | 12 | 78 % | 92 % | 3 | 10.2 h | 21.5 °C |
| October | 10 | 69 % | 86 % | 3 | 8.8 h | 18.1 °C |
| November | 8 | 61 % | 79 % | 3 | 7.8 h | 13.2 °C |
| December | 4 | 34 % | 50 % | 2 | 7.7 h | 10.0 °C |
When to shoot exteriors in Barcelona
Weighing daylight against rain days, July comes out best: 14 h 53 min of daylight, 4 rain days and 13.5 hours of sunshine a day. The sunniest month is July (13.5 h a day).
The month matters here: five exterior days run a 50 % risk of losing at least one day in January, but 92 % in September — 2 against 3 cover days for 90 % certainty.
Rain days are not grey days: even in September, the wettest month, the sun shines 10.2 hours a day on average. Many of those rain days are wet for an hour, not all day — if your scenes can wait out a shower, lower the share slider in the tool.
Frequently asked
What is the rainiest month in Barcelona?
September, with 12 days of at least 1 mm rain on average (2015–2024). The driest is January with 4.
How many cover days should I plan for an exterior shoot in Barcelona?
For five exterior days and 90 % certainty: 2 in January, 3 in September. The tool above calculates it for your exact number of days.
Is this a weather forecast?
No — it is climate: what the last ten years looked like on average. From about ten days before the shoot, the national weather service forecast is the better source.