Greece
Athens in December: weather, sea & travel advice
This month's data profile
Clear transition month
Athens in December is climatically mixed. The average daily high is around 14 °C, and the sea is about 17 °C. With about 10 rainy days it is wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
44/100 · #10
Warmth
#10
Dryness
#11
Sun
#12
Sea warmth
#8
Published best categories: none
Athens · DecemberPhoto: Jebulon · CC0Climate facts
- Average high
- 14 °C
- Average low
- 9 °C
- Sea
- 17 °C
- Rainy days (est.)
- 10 rainy days (est.)
- Sun (est.)
- 2 h/day
- Humidity
- 81 %
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 | 18 | 12 | 9 | 71 | 2.7 | 77 | 3.4 | 20 | 65 |
| December (selected) | 14 | 9 | 10 | 79 | 2.1 | 81 | 3.6 | 17 | 44 |
| January | 12 | 7 | 10 | 64 | 2.4 | 81 | 3.6 | 15 | 38 |
How do the previous and next months compare?
Baseline: December (44/100)
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 | +21 | +4.4 °C | +3.6 °C | -1.5 | -8.3 mm | +0.6 h | -3.7 % | -0.2 m/s | +2.9 °C |
| January | -6 | -1.5 °C | -1.8 °C | ±0 | -15.5 mm | +0.3 h | +0.1 % | ±0 m/s | -2.1 °C |
All twelve months in context
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Useful next decisions
Frequently asked questions
How warm is Athens in December?
The average daily high is around 14 °C, with an average daily low of about 9 °C.
Can you swim in Athens in December?
The sea is about 17 °C (cold).
Does it rain a lot in Athens in December?
The curated estimate is about 10 rainy days per month, not a directly measured long-term average. Total precipitation averages around 79 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Athens?
By the climate score, May, June, September and October are the strongest months for Athens. For a beach trip: June, July, August and September. December is not among them.