Caerphilly County Borough (Caerphilly)
September
Weather in Caerphilly County Borough for September 2026
Your guide to Caerphilly County Borough weather in September - trends and predictions
So far, September 2026 in Caerphilly County Borough is slightly warmer than the historical average by 0.6 °C.
The forecast for the next days in Caerphilly County Borough predicts temperatures to be around 21 °C, close to the historical average.
In general, the average temperature in Caerphilly County Borough at the beginning of September is 18.7 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 22.3 °C by the end of September.
Caerphilly County Borough in September brings notable rainfall, with an average of 17 rainy days and a total precipitation of 139 mm.
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Temperatures
Rain 🌧️
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13
Dry days
17
Rainy days
0
Snow days
16°/9°
Temperatures
25 km/h
Avg max wind
83 %
Avg humidity
Caerphilly County Borough Weather September
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Temperatures trend during September in Caerphilly County Borough
See the weather trend as well as the moving average line
September weather in Caerphilly County Borough day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain shower | 18° /11° | 3.3 mm | 2 | |
| 2 Sept. |  Moderate rain | 18° /12° | 4.4 mm | 2 | |
| 3 Sept. | Light rain shower | 19° /14° | 11.5 mm | 1 | |
| 4 Sept. | Light rain shower | 18° /12° | 3 mm | 3 | |
| 5 Sept. | Patchy rain possible | 18° /10° | 0 mm | 4 | |
| 6 Sept. |  Mist | 22° /12° | 0.1 mm | 3 | |
| 7 Sept. | Light rain shower | 18° /11° | 3.3 mm | 2 | |
| 8 Sept. | Patchy rain possible | 17° /10° | 9.2 mm | 3 | |
| 9 Sept. | Light rain shower | 17° /10° | 1.5 mm | 3 | |
| 10 Sept. | Light rain shower | 17° /10° | 8.2 mm | 1 | |
| 11 Sept. | Light rain shower | 17° /11° | 3 mm | 3 | |
| 12 Sept. | Light rain shower | 17° /9° | 4.7 mm | 1 | |
| 13 Sept. | Light rain shower | 16° /12° | 8.8 mm | 1 | |
| 14 Sept. | Light rain shower | 18° /12° | 18.9 mm | 2 | |
| 15 Sept. | Light rain shower | 16° /11° | 2.6 mm | 2 | |
| 16 Sept. | Patchy rain possible | 16° /10° | 0.3 mm | 2 | |
| 17 Sept. |  Light rain | 16° /11° | 6.8 mm | 2 | |
| 18 Sept. | Patchy rain possible | 18° /12° | 2.4 mm | 1 | |
| 19 Sept. | Mist | 20° /13° | 0 mm | 3 | |
| 20 Sept. |  Overcast | 17° /12° | 0 mm | 2.5 | |
| 21 Sept. |  Sunny | 21° /11° | 0 mm | 4 | |
| 22 Sept. | Sunny | 22° /15° | 0 mm | 3.8 | |
| 23 Sept. | Overcast | 20° /11° | 0 mm | 3.3 | |
| 24 Sept. | Sunny | 20° /9° | 0 mm | 5 | |
| 25 Sept. | Sunny | 21° /11° | 0 mm | 6 | |
| 26 Sept. | Overcast | 25° /11° | 0 mm | 7 | |
| 27 Sept. | Overcast | 22° /14° | 0 mm | 5 | |
| 28 Sept. | Sunny | 24° /14° | 0 mm | 6 | |
| 29 Sept. | Sunny | 25° /13° | 0 mm | 6 | |
| 30 Sept. | Overcast | 19° /16° | 0 mm | 4 | |
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Important Notice
Our weather forecast for Caerphilly County Borough 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 Caerphilly County Borough forecast closer to your planned date for the most up-to-date weather information.
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Caerphilly County Borough in September - FAQ
What are the expected maximum and minimum temperatures in Caerphilly County Borough during September?
Enjoy moderate daytime temperatures of up to 16° and cooler nights around 9°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Caerphilly County Borough during September?
Significant rainfall exceeding 139 mm is expected in Caerphilly County Borough during September, occurring over more than 17 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Caerphilly County Borough during September?
The average wind speed in Caerphilly County Borough during September is 25 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Caerphilly County Borough
Explore the daily rainfall trends and prepare for Caerphilly County Boroughs September weather 💧
Typically, Caerphilly County Borough has 17 rainy days in September with a total of 139 mm of rainfall.
UV exposure in Caerphilly County Borough during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Caerphilly County Borough?Get accurate weather forecasts for Caerphilly County Borough, located at latitude 51.575 and longitude -3.218. Stay updated with localized weather information tailored for Caerphilly County Borough.
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