Temperature
Cold by day, cold at night.
47°Ftypical January high
Typical range
January climate
January in Portmarnock
Ireland · Europe
Cold days.
Some tradeoffs
Daytime high
47°F
Lows around 39°F
Rain
Several rainy days
Sun
4 h/day
Air feel
Very dry
When to visit
Month-by-month fit
Best
Precipitation
Several rainy days. About 11 wet days, the lowest monthly average.
35%wet-day frequency
AmountWet-day chance
Sunshine
Sunshine is limited, with cloud often dominating.
4.1 hJanuary sunshine
Heat & humidity by month
Humidity is rarely noticeable in the cool air.
Very dryJanuary Heat feel
Easy airWarm airHumid air
Hourly temperature pattern
In January, afternoons feel about 37° and nights feel near 33°.
Very coldColdCoolNight hours
Clear sky
Mostly cloudy skies this month.
32%January Clear sky
Clear skyCloud
Wind pattern
Breezy January days can feel brisker in open spots.
12 mphJanuary Breezy
More detailIncludes daypart comfort
Typical January day
January late afternoons are around 45°F, and early evening stays near 44°F.
Avg temp Typical range
Morning43°F
Rain16%
Cloud74%
Humid airLow
Sun intensityMinimal
Midday45°F
Rain16%
Cloud73%
Humid airLow
Sun intensityMinimal
Late afternoon45°F
Rain15%
Cloud72%
Humid airLow
Sun intensityMinimal
Best windowEarly evening43°F
Rain14%
Cloud71%
Humid airLow
Sun intensityMinimal
Data tableView month-by-month numbers
View month-by-month numbers
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 47 | 39 | 2.4 | 11 | 4.1 | 84 |
| Feb | 50 | 42 | 2.4 | 13 | 5.8 | 82 |
| Mar | 52 | 42 | 2.4 | 14 | 7.7 | 80 |
| Apr | 55 | 43 | 2.7 | 12 | 9.8 | 78 |
| May | 60 | 49 | 2.5 | 13 | 11.3 | 78 |
| Jun | 65 | 53 | 2.4 | 11 | 11.2 | 78 |
| Jul | 67 | 56 | 3.1 | 15 | 10.4 | 79 |
| Aug | 67 | 56 | 2.3 | 11 | 9.5 | 81 |
| Sep | 63 | 53 | 3.7 | 14 | 8.3 | 82 |
| Oct | 58 | 50 | 3.8 | 16 | 6.2 | 83 |
| Nov | 52 | 45 | 2.8 | 12 | 4.7 | 85 |
| Dec | 49 | 42 | 2.8 | 13 | 3.7 | 85 |
Similar climates
Similar
Similar climateAmsterdamNetherlandsSimilar climateLondonUnited KingdomSimilar climateViennaAustriaSimilar climateBudapestHungary
Want a side-by-side climate view? Compare Portmarnock with Amsterdam.
Climate data notePlanning guidance, not a forecast
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jul 31, 2026
Data & methodology