Spain
Costa Brava in December: weather, sea & travel advice
This month's data profile
Clear transition month
Costa Brava in December is climatically well suited to city breaks. The average daily high is around 14 °C, and the sea is about 15 °C. With about 6 rainy days it is moderate.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
48/100 · #11
Warmth
#10
Dryness
#3
Sun
#12
Sea warmth
#8
Published best categories: none
Costa Brava · DecemberPhoto: Txllxt TxllxT · CC BY-SA 4.0Climate facts
- Average high
- 14 °C
- Average low
- 8 °C
- Sea
- 15 °C
- Rainy days (est.)
- 6 rainy days (est.)
- Sun (est.)
- 2 h/day
- Humidity
- 78 %
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 |
|---|---|---|---|---|---|---|---|---|---|
| November | 17 | 10 | 7 | 61 | 2.5 | 76 | 4.0 | 17 | 56 |
| December (selected) | 14 | 8 | 6 | 56 | 2.0 | 78 | 3.9 | 15 | 48 |
| January | 13 | 7 | 7 | 51 | 2.3 | 76 | 4.0 | 13 | 44 |
How do the previous and next months compare?
Baseline: December (48/100)
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 | |
|---|---|---|---|---|---|---|---|---|---|
| November | +8 | +2.8 °C | +2.6 °C | +1 | +4.9 mm | +0.5 h | -1.4 % | +0.1 m/s | +2 °C |
| January | -4 | -0.8 °C | -1.1 °C | +0.7 | -4.3 mm | +0.3 h | -1.3 % | +0.1 m/s | -1.2 °C |
All twelve months in context

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Useful next decisions
Frequently asked questions
How warm is Costa Brava in December?
The average daily high is around 14 °C, with an average daily low of about 8 °C.
Can you swim in Costa Brava in December?
The sea is about 15 °C (cold).
Does it rain a lot in Costa Brava in December?
The curated estimate is about 6 rainy days per month, not a directly measured long-term average. Total precipitation averages around 56 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. December is not among them.