Temperature
Cool by day, brisk at night.
57°Ftypical October high
Typical range
Cool days and some sun.

Cool by day, brisk at night.
It rains on most days. About 20 wet days, the highest monthly average.
Cloudier spells limit sunshine.
In October, afternoons feel about 48° and nights feel near 43°.
Overcast skies this month.
Breezy October days can feel brisker in open spots.
October late afternoons are around 55°F, easing to about 53°F in early evening.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 46 | 39 | 3.1 | 16 | 3.7 | 86 |
| Feb | 48 | 41 | 3.3 | 16 | 5.6 | 84 |
| Mar | 50 | 41 | 2.8 | 16 | 7.2 | 82 |
| Apr | 53 | 43 | 3.2 | 17 | 9.4 | 80 |
| May | 58 | 48 | 3.2 | 16 | 10.9 | 80 |
| Jun | 62 | 52 | 2.9 | 16 | 10.7 | 82 |
| Jul | 64 | 55 | 3.6 | 17 | 9.8 | 84 |
| Aug | 65 | 55 | 3.6 | 17 | 9.0 | 84 |
| Sep | 62 | 53 | 3.7 | 16 | 7.4 | 84 |
| Oct | 57 | 50 | 4.7 | 20 | 5.8 | 85 |
| Nov | 51 | 44 | 3.8 | 17 | 4.2 | 86 |
| Dec | 48 | 42 | 4.1 | 18 | 3.3 | 86 |
Similar climates
Want a side-by-side climate view? Compare Portrush 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