Temperature
Cool by day, brisk at night.
Cool days and some sun.

Cool by day, brisk at night.
Rain is frequent. About 17 wet days this month.
Cloudier spells limit sunshine.
In September, afternoons feel about 54° and nights feel near 50°.
Mostly cloudy skies this month.
Breezy conditions are typical in September. More a comfort consideration than a planning concern.
September late afternoons are around 61°F, easing to about 59°F in early evening.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 47 | 41 | 4.6 | 15 | 4.0 | 85 |
| Feb | 49 | 43 | 5.3 | 20 | 5.6 | 83 |
| Mar | 51 | 43 | 4.7 | 15 | 7.3 | 81 |
| Apr | 54 | 45 | 3.1 | 14 | 9.7 | 79 |
| May | 59 | 49 | 3.3 | 14 | 10.6 | 79 |
| Jun | 62 | 53 | 3.9 | 17 | 10.7 | 80 |
| Jul | 64 | 57 | 4.2 | 17 | 9.5 | 83 |
| Aug | 64 | 57 | 4.6 | 19 | 8.9 | 83 |
| Sep | 62 | 54 | 5.6 | 17 | 7.4 | 83 |
| Oct | 57 | 51 | 7.5 | 21 | 5.7 | 84 |
| Nov | 52 | 47 | 6.6 | 20 | 4.3 | 85 |
| Dec | 49 | 44 | 6.3 | 20 | 3.4 | 85 |
Similar climates
Want a side-by-side climate view? Compare Lahinch 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