Spain
Costa Brava in September: weather, sea & travel advice
This month's data profile
Strong month under the current formula
Costa Brava in September is climatically well suited to city breaks, family holidays, beach holidays and active holidays and hiking. The average daily high is around 25 °C, and the sea is about 22 °C. With about 8 rainy days it is moderate.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
85/100 · #3
Warmth
#4
Dryness
#10
Sun
#6
Sea warmth
#3
Published best categories: Overall, Beach, City break, Family
Costa Brava · SeptemberPhoto: Txllxt TxllxT · CC BY-SA 4.0Climate facts
- Average high
- 25 °C
- Average low
- 18 °C
- Sea
- 22 °C
- Rainy days (est.)
- 8 rainy days (est.)
- Sun (est.)
- 6 h/day
- Humidity
- 71 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| August | 28 | 21 | 7 | 37 | 7.4 | 66 | 3.0 | 24 | 86 |
| September (selected) | 25 | 18 | 8 | 68 | 5.6 | 71 | 3.1 | 22 | 85 |
| October | 21 | 15 | 9 | 83 | 3.8 | 76 | 3.5 | 19 | 73 |
How do the previous and next months compare?
Baseline: September (85/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | Sea Δ | |
|---|---|---|---|---|---|---|---|---|---|
| August | +1 | +3.6 °C | +3.2 °C | -1.8 | -30.1 mm | +1.8 h | -4.3 % | -0.2 m/s | +1.5 °C |
| October | -12 | -3.6 °C | -3.1 °C | +0.1 | +15.6 mm | -1.8 h | +5.3 % | +0.3 m/s | -2.9 °C |
All twelve months in context
Find a place to stay
Where to stay in Costa Brava
Compare available stays, prices and cancellation terms for Costa Brava on Booking.com.
Booking.comFind places to stayAffiliate link: there is no extra cost to you.
Useful next decisions
Frequently asked questions
How warm is Costa Brava in September?
The average daily high is around 25 °C, with an average daily low of about 18 °C.
Can you swim in Costa Brava in September?
The sea is about 22 °C (swimmable).
Does it rain a lot in Costa Brava in September?
The curated estimate is about 8 rainy days per month, not a directly measured long-term average. Total precipitation averages around 68 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Costa Brava?
By the climate score, June, July, August and September are the strongest months for Costa Brava. For a beach trip: June, July, August and September. September is one of them.