Poland
Gdańsk in December: weather, sea & travel advice
This month's data profile
Rain shapes the decision
Gdańsk in December is climatically mixed. The average daily high is around 3 °C, and the sea is about 6 °C. With about 14 rainy days it is wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
17/100 · #11
Warmth
#10
Dryness
#11
Sun
#12
Sea warmth
#8
Published best categories: none
Gdańsk · DecemberPhoto: Krzysztof Maria Różański, ( Upior polnocy ) · CC BY-SA 3.0Climate facts
- Average high
- 3 °C
- Average low
- 0 °C
- Sea
- 6 °C
- Rainy days (est.)
- 14 rainy days (est.)
- Sun (est.)
- 1 h/day
- Humidity
- 91 %
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 | 6 | 3 | 14 | 64 | 0.8 | 90 | 5.1 | 9 | 19 |
| December (selected) | 3 | -0 | 14 | 63 | 0.5 | 91 | 5.5 | 6 | 17 |
| January | 1 | -2 | 14 | 58 | 0.6 | 91 | 5.7 | 4 | 17 |
How do the previous and next months compare?
Baseline: December (17/100)
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 | +2 | +3.7 °C | +3.4 °C | -0.6 | +1.3 mm | +0.3 h | -1.4 % | -0.4 m/s | +3 °C |
| January | ±0 | -1.4 °C | -1.7 °C | +0.1 | -5.1 mm | +0.1 h | -0.3 % | +0.3 m/s | -2 °C |
All twelve months in context
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Useful next decisions
Frequently asked questions
How warm is Gdańsk in December?
The average daily high is around 3 °C, with an average daily low of about 0 °C.
Can you swim in Gdańsk in December?
The sea is about 6 °C (cold).
Does it rain a lot in Gdańsk in December?
The curated estimate is about 14 rainy days per month, not a directly measured long-term average. Total precipitation averages around 63 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Gdańsk?
By the climate score, July and August are the strongest months for Gdańsk. December is not among them.