Holyhead
September
Weather in Holyhead for September 2026
Your guide to Holyhead weather in September - trends and predictions
In general, the average temperature in Holyhead at the beginning of September is 16.9 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 14.4 °C by the end of September.
Holyhead experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 172.9 mm.
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Temperatures
Rain 🌧️
More
7
Dry days
23
Rainy days
0
Snow days
15°/12°
Temperatures
32 km/h
Avg max wind
80 %
Avg humidity
Holyhead Weather September
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Temperatures trend during September in Holyhead
See the weather trend as well as the moving average line
September weather in Holyhead day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain shower | 16° /13° | 9.6 mm | 1 | |
| 2 Sept. | Patchy rain possible | 16° /13° | 1.4 mm | 3 | |
| 3 Sept. | Light rain shower | 16° /13° | 6.6 mm | 1 | |
| 4 Sept. | Patchy rain possible | 16° /13° | 1.1 mm | 3 | |
| 5 Sept. | Patchy rain possible | 15° /12° | 0 mm | 4 | |
| 6 Sept. | Patchy rain possible | 19° /12° | 0 mm | 3 | |
| 7 Sept. | Light rain shower | 20° /13° | 25.8 mm | 2 | |
| 8 Sept. | Patchy rain possible | 15° /12° | 4.3 mm | 2 | |
| 9 Sept. | Patchy rain possible | 17° /13° | 0.9 mm | 1 | |
| 10 Sept. |  Moderate or heavy rain with thunder | 15° /13° | 13.5 mm | 1 | |
| 11 Sept. | Light rain shower | 14° /11° | 5 mm | 1 | |
| 12 Sept. | Light rain shower | 14° /12° | 10.3 mm | 1 | |
| 13 Sept. | Light rain shower | 14° /11° | 7.8 mm | 2 | |
| 14 Sept. | Light rain shower | 16° /12° | 11 mm | 1 | |
| 15 Sept. | Light rain shower | 14° /13° | 4.3 mm | 1 | |
| 16 Sept. | Light rain shower | 15° /13° | 0.9 mm | 1 | |
| 17 Sept. | Patchy rain possible | 16° /12° | 20.2 mm | 2 | |
| 18 Sept. | Light rain shower | 16° /14° | 4.1 mm | 1 | |
| 19 Sept. | Light rain shower | 17° /13° | 5.6 mm | 0 | |
| 20 Sept. | Light rain shower | 14° /10° | 29.6 mm | 0 | |
| 21 Sept. | Patchy rain possible | 12° /8° | 2.2 mm | 1 | |
| 22 Sept. | Patchy rain possible | 12° /8° | 0.4 mm | 2 | |
| 23 Sept. | Patchy rain possible | 13° /9° | 0 mm | 1 | |
| 24 Sept. | Patchy rain possible | 14° /9° | 0 mm | 2 | |
| 25 Sept. |  Sunny | 15° /10° | 0 mm | 2 | |
| 26 Sept. | Patchy rain possible | 15° /8° | 0 mm | 2 | |
| 27 Sept. | Light rain shower | 14° /11° | 5 mm | 1 | |
| 28 Sept. | Patchy rain possible | 14° /11° | 1.4 mm | 1 | |
| 29 Sept. | Patchy rain possible | 14° /10° | 0 mm | 1 | |
| 30 Sept. | Patchy rain possible | 15° /13° | 1.9 mm | 0 | |
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Important Notice
Our weather forecast for Holyhead 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 Holyhead forecast closer to your planned date for the most up-to-date weather information.
Change Month
Holyhead in September - FAQ
What are the expected maximum and minimum temperatures in Holyhead during September?
During September, expect a variety of temperatures with highs around 15° and lows near 12°, suitable for diverse activities and preferences.
How much rainfall should be expected in Holyhead during September?
Significant rainfall exceeding 172.9 mm is expected in Holyhead during September, occurring over more than 23 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Holyhead during September?
The average wind speed in Holyhead during September is 32 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Holyhead
Explore the daily rainfall trends and prepare for Holyheads September weather 💧
Typically, Holyhead has 23 rainy days in September with a total of 172.9 mm of rainfall.
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