Temperature
Cool by day, brisk at night.
62°Ftypical September high
Typical range
September climate
September in Portrush
United Kingdom · Europe
Cool days and some sun.
One of the best months here
Daytime high
62°F
Lows around 53°F
Rain
Frequent rain
Sun
7.5 h/day
Air feel
Comfortable
When to visit
Month-by-month fit
Best
Precipitation
Rain is frequent. About 16 wet days, the lowest monthly average.
53%wet-day frequency
AmountWet-day chance
Sunshine
Cloudier spells limit sunshine.
7.4 hSeptember sunshine
Heat & humidity by month
ComfortableSeptember
Easy airWarm airHumid air
Hourly temperature pattern
In September, afternoons feel about 55° and nights feel near 49°.
FreezingVery coldColdCoolNight hours
Clear sky
Mostly cloudy skies this month.
25%September Clear sky
Clear skyCloud
Wind pattern
Breezy conditions are typical in September. More a comfort consideration than a planning concern.
10 mphSeptember Breezy
More detailIncludes daypart comfort
Typical September day
September late afternoons are around 60°F, easing to about 58°F in early evening.
Avg temp Typical range
Morning56°F
Rain24%
Cloud79%
Humid airLow
Sun intensityMinimal
Midday60°F
Rain32%
Cloud82%
Humid airLow
Sun intensityModerate
Late afternoon60°F
Rain32%
Cloud81%
Humid airLow
Sun intensityLow
Early evening58°F
Rain23%
Cloud75%
Humid airLow
Sun intensityMinimal
Best windowData tableView month-by-month numbers
View month-by-month numbers
| 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
Similar
Similar climateAmsterdamNetherlandsSimilar climateLondonUnited KingdomSimilar climateDublinIrelandSimilar climateCopenhagenDenmark
Want a side-by-side climate view? Compare Portrush 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