Temperature
Cool by day, brisk at night.
55°Ftypical May high
Typical range
May climate
May in Aran Islands
Ireland · Europe
Cool days and some sun. Best available month, but conditions still involve trade-offs.
Some tradeoffs
Daytime high
55°F
Lows around 51°F
Rain
Frequent rain
Sun
11 h/day
Air feel
Very dry
Sea temp
53°F
Too cold for swimming
When to visit
Month-by-month fit
Best
Precipitation
Rain is frequent. About 14 wet days, fewer than in most months.
45%wet-day frequency
AmountWet-day chance
Sunshine
Cloudier spells limit sunshine.
11 hMay sunshine
Heat & humidity by month
Humidity is rarely noticeable in the cool air.
Very dryMay Heat feel
Hourly temperature pattern
In May, afternoons feel about 44° and nights feel near 42°.
FreezingVery coldColdNight hours
Clear sky
Mostly cloudy skies this month.
33%May Clear sky
Clear skyCloud
Wind pattern
Breezy May days can feel brisker in open spots.
15 mphMay Breezy
Sea temperature
53°FMay sea temp
More detailIncludes daypart comfort
Typical May day
May late afternoons are around 54°F, and early evening stays near 54°F.
Avg temp Typical range
Morning52°F
Rain26%
Cloud68%
Humid airLow
Sun intensityLow
Midday53°F
Rain22%
Cloud69%
Humid airLow
Sun intensityStrong
Late afternoon54°F
Rain21%
Cloud69%
Humid airLow
Sun intensityModerate
Best windowEarly evening54°F
Rain21%
Cloud67%
Humid airLow
Sun intensityLow
Data tableView month-by-month numbers
View month-by-month numbers
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% | Sea°F |
|---|---|---|---|---|---|---|---|
| Jan | 48 | 44 | 5.3 | 19 | 4.1 | 80 | 50 |
| Feb | 48 | 44 | 4.5 | 16 | 5.6 | 79 | 50 |
| Mar | 49 | 44 | 3.8 | 14 | 7.4 | 79 | 50 |
| Apr | 51 | 47 | 2.7 | 13 | 9.9 | 79 | 51 |
| May | 55 | 51 | 3.2 | 14 | 11.0 | 80 | 53 |
| Jun | 58 | 55 | 3.5 | 14 | 11.1 | 81 | 56 |
| Jul | 60 | 58 | 4.0 | 16 | 10.1 | 83 | 59 |
| Aug | 61 | 58 | 4.9 | 17 | 9.6 | 82 | 60 |
| Sep | 60 | 56 | 4.7 | 16 | 8.1 | 81 | 59 |
| Oct | 56 | 53 | 6.1 | 19 | 6.2 | 80 | 56 |
| Nov | 52 | 49 | 6.9 | 20 | 4.4 | 80 | 54 |
| Dec | 50 | 46 | 6.6 | 20 | 3.6 | 80 | 52 |
Similar climates
Similar
Similar travel styleAberystwythUnited KingdomSimilar travel styleAlderneyGuernseySimilar travel styleAngleseyUnited KingdomSimilar travel styleBrightonUnited Kingdom
Want a side-by-side climate view? Compare Aran Islands with Aberystwyth.
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