Portrush
September
Weather in Portrush for September 2027
Your guide to Portrush weather in September - trends and predictions
In general, the average temperature in Portrush at the beginning of September is 15.6 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 13.6 °C by the end of September.
Portrush in September brings notable rainfall, with an average of 19 rainy days and a total precipitation of 105.9 mm.
Is September a good time to visit Portrush? check out the best time to travel to Portrush page.
✨ Is September a good time to visit Portrush? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
11
Dry days
19
Rainy days
0
Snow days
15°/11°
Temperatures
29 km/h
Avg max wind
81 %
Avg humidity
Portrush Weather September
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Temperatures trend during September in Portrush
See the weather trend as well as the moving average line
September weather in Portrush day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain | 15° /12° | 6.3 mm | 3 | |
| 2 Sept. |  Patchy rain possible | 16° /12° | 2.4 mm | 3 | |
| 3 Sept. | Light rain | 14° /12° | 4.1 mm | 2 | |
| 4 Sept. | Light rain | 14° /11° | 4.2 mm | 3 | |
| 5 Sept. | Patchy rain possible | 15° /11° | 0.3 mm | 3 | |
| 6 Sept. |  Sunny | 18° /13° | 0.6 mm | 3 | |
| 7 Sept. | Patchy rain possible | 17° /12° | 2.3 mm | 4 | |
| 8 Sept. | Patchy rain possible | 14° /11° | 1.8 mm | 3 | |
| 9 Sept. | Patchy rain possible | 14° /11° | 1.7 mm | 3 | |
| 10 Sept. | Light rain | 14° /11° | 5.9 mm | 2 | |
| 11 Sept. |  Moderate rain | 13° /11° | 10.2 mm | 2 | |
| 12 Sept. | Light rain | 14° /11° | 7.3 mm | 2 | |
| 13 Sept. | Patchy rain possible | 14° /8° | 2.1 mm | 2 | |
| 14 Sept. |  Moderate or heavy rain shower | 15° /11° | 7.7 mm | 3 | |
| 15 Sept. | Moderate rain at times | 15° /12° | 5.4 mm | 3 | |
| 16 Sept. | Light rain | 15° /11° | 3.2 mm | 2 | |
| 17 Sept. | Light rain | 16° /12° | 4.4 mm | 3 | |
| 18 Sept. | Patchy rain possible | 16° /11° | 2.4 mm | 3 | |
| 19 Sept. | Patchy rain possible | 16° /11° | 0.3 mm | 3 | |
| 20 Sept. | Sunny | 15° /11° | 0.6 mm | 3 | |
| 21 Sept. | Patchy rain possible | 16° /12° | 1.8 mm | 3 | |
| 22 Sept. | Patchy rain possible | 15° /11° | 1.1 mm | 3 | |
| 23 Sept. | Light rain | 13° /9° | 4.2 mm | 3 | |
| 24 Sept. | Patchy rain possible | 14° /9° | 2.1 mm | 2 | |
| 25 Sept. |  Overcast | 13° /10° | 0.7 mm | 2.9 | |
| 26 Sept. | Light rain | 14° /10° | 4.1 mm | 2.8 | |
| 27 Sept. | Light rain | 12° /9° | 7.7 mm | 2 | |
| 28 Sept. | Patchy rain possible | 13° /8° | 1.5 mm | 2 | |
| 29 Sept. | Patchy rain possible | 14° /10° | 1 mm | 2 | |
| 30 Sept. | Light rain | 15° /11° | 8.4 mm | 2.5 | |
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Important Notice
Our weather forecast for Portrush in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Portrush forecast closer to your planned date for the most up-to-date weather information.
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Portrush in September - FAQ
What are the expected maximum and minimum temperatures in Portrush during September?
During September, expect a variety of temperatures with highs around 15° and lows near 11°, suitable for diverse activities and preferences.
How much rainfall should be expected in Portrush during September?
Significant rainfall exceeding 105.9 mm is expected in Portrush during September, occurring over more than 19 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Portrush during September?
The average wind speed in Portrush during September is 29 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Portrush
Explore the daily rainfall trends and prepare for Portrushs September weather 💧
Typically, Portrush has 19 rainy days in September with a total of 105.9 mm of rainfall.
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