Temperature
Cool by day, brisk at night.
61°Ftypical May high
Typical range
Cool days and some sun.

Cool by day, brisk at night.
Rain is frequent. About 14 wet days, fewer than in most months.
Cloudier spells limit sunshine.
In May, afternoons feel about 53° and nights feel near 43°.
Mostly cloudy skies this month.
Calm winds are typical in May.
May late afternoons are around 59°F, easing to about 56°F in early evening.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 47 | 37 | 4.1 | 13 | 4.4 | 90 |
| Feb | 50 | 41 | 5.2 | 16 | 5.8 | 88 |
| Mar | 52 | 40 | 4.7 | 16 | 7.7 | 85 |
| Apr | 56 | 43 | 2.9 | 14 | 9.9 | 82 |
| May | 61 | 47 | 3.7 | 14 | 10.8 | 82 |
| Jun | 64 | 51 | 3.2 | 15 | 11.1 | 82 |
| Jul | 67 | 55 | 3.7 | 15 | 10.2 | 85 |
| Aug | 67 | 55 | 3.1 | 13 | 9.4 | 86 |
| Sep | 63 | 51 | 4.9 | 16 | 7.9 | 87 |
| Oct | 58 | 49 | 6.5 | 19 | 6.1 | 89 |
| Nov | 53 | 44 | 4.8 | 18 | 4.8 | 91 |
| Dec | 49 | 41 | 4.8 | 16 | 3.8 | 91 |
Similar climates
Want a side-by-side climate view? Compare Killarney with Amsterdam.
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