Latvia
Riga in December: weather, sea & travel advice
This month's data profile
Rain shapes the decision
Riga in December is climatically mixed. The average daily high is around -1 °C, and the sea is about 5 °C. With about 16 rainy days it is very wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
14/100 · #12
Warmth
#10
Dryness
#12
Sun
#12
Sea warmth
#8
Published best categories: none
Riga · DecemberPhoto: Jorge Láscar from Melbourne, Australia · CC BY 2.0Climate facts
- Average high
- -1 °C
- Average low
- -4 °C
- Sea
- 5 °C
- Rainy days (est.)
- 16 rainy days (est.)
- Sun (est.)
- 0 h/day
- Humidity
- 95 %
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 | 3 | 0 | 14 | 68 | 0.6 | 93 | 3.9 | 8 | 16 |
| December (selected) | -1 | -4 | 16 | 62 | 0.3 | 95 | 4.3 | 5 | 14 |
| January | -2 | -7 | 15 | 63 | 0.5 | 95 | 4.4 | 2 | 15 |
How do the previous and next months compare?
Baseline: December (14/100)
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 | +4 °C | +4.2 °C | -1 | +5.4 mm | +0.3 h | -1.8 % | -0.3 m/s | +3 °C |
| January | +1 | -1.7 °C | -2.4 °C | -0.7 | +0.3 mm | +0.2 h | +0.2 % | +0.1 m/s | -2.5 °C |
All twelve months in context

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Useful next decisions
Frequently asked questions
How warm is Riga in December?
The average daily high is around -1 °C, with an average daily low of about -4 °C.
Can you swim in Riga in December?
The sea is about 5 °C (cold).
Does it rain a lot in Riga in December?
The curated estimate is about 16 rainy days per month, not a directly measured long-term average. Total precipitation averages around 62 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Riga?
By the climate score, July and August are the strongest months for Riga. December is not among them.