Ireland
Galway in December: weather, sea & travel advice
This month's data profile
Rain shapes the decision
Galway in December is climatically mixed. The average daily high is around 7 °C, and the sea is about 10 °C. With about 19 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
12/100 · #12
Warmth
#11
Dryness
#11
Sun
#12
Sea warmth
#8
Published best categories: none
Galway · DecemberPhoto: Wolfgang Glock · CC BY-SA 3.0Climate facts
- Average high
- 7 °C
- Average low
- 3 °C
- Sea
- 10 °C
- Rainy days (est.)
- 19 rainy days (est.)
- Sun (est.)
- 1 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 | 10 | 5 | 20 | 116 | 1.0 | 94 | 3.6 | 12 | 15 |
| December (selected) | 7 | 3 | 19 | 116 | 0.6 | 95 | 3.8 | 10 | 12 |
| January | 7 | 3 | 19 | 105 | 0.8 | 94 | 4.0 | 9 | 13 |
How do the previous and next months compare?
Baseline: December (12/100)
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 | +3 | +2.2 °C | +1.8 °C | +0.3 | +0.3 mm | +0.4 h | -0.9 % | -0.3 m/s | +1.7 °C |
| January | +1 | -0.3 °C | -0.6 °C | -0.9 | -10.5 mm | +0.2 h | -0.8 % | +0.1 m/s | -1.2 °C |
All twelve months in context
Find a place to stay
Where to stay in Galway
Compare available stays, prices and cancellation terms for Galway 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 Galway in December?
The average daily high is around 7 °C, with an average daily low of about 3 °C.
Can you swim in Galway in December?
The sea is about 10 °C (cold).
Does it rain a lot in Galway in December?
The curated estimate is about 19 rainy days per month, not a directly measured long-term average. Total precipitation averages around 116 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Galway?
No month in Galway reaches the threshold for a clear recommendation in the climate score; the month comparison above shows the differences.