City and County of Swansea (Swansea)
September
Weather in City and County of Swansea for September 2027
Your guide to City and County of Swansea weather in September - trends and predictions
In general, the average temperature in City and County of Swansea at the beginning of September is 18.4 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 15.4 °C by the end of September.
City and County of Swansea in September brings notable rainfall, with an average of 18 rainy days and a total precipitation of 139.4 mm.
Is September a good time to visit City and County of Swansea? check out the best time to travel to City and County of Swansea page.
✨ Is September a good time to visit City and County of Swansea? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
12
Dry days
18
Rainy days
0
Snow days
17°/13°
Temperatures
28 km/h
Avg max wind
80 %
Avg humidity
City and County of Swansea Weather September
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Temperatures trend during September in City and County of Swansea
See the weather trend as well as the moving average line
September weather in City and County of Swansea day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain | 18° /15° | 4.7 mm | 3 | |
| 2 Sept. | Light rain | 18° /14° | 2.8 mm | 4 | |
| 3 Sept. | Light rain | 18° /15° | 6.2 mm | 4 | |
| 4 Sept. | Light rain | 18° /14° | 2.6 mm | 4 | |
| 5 Sept. | Light rain | 18° /14° | 4.9 mm | 4 | |
| 6 Sept. |  Patchy rain possible | 20° /16° | 2 mm | 4 | |
| 7 Sept. | Light rain | 20° /15° | 4.2 mm | 4 | |
| 8 Sept. | Light rain | 18° /15° | 8.2 mm | 4 | |
| 9 Sept. | Patchy rain possible | 17° /14° | 1.1 mm | 3 | |
| 10 Sept. | Light rain | 17° /13° | 4 mm | 4 | |
| 11 Sept. | Light rain | 16° /13° | 3.9 mm | 4 | |
| 12 Sept. | Light rain | 16° /12° | 6.5 mm | 3 | |
| 13 Sept. | Light rain | 16° /12° | 7.8 mm | 3 | |
| 14 Sept. | Light rain | 17° /14° | 6.9 mm | 3 | |
| 15 Sept. | Light rain | 17° /14° | 2.7 mm | 4 | |
| 16 Sept. | Light rain shower | 17° /13° | 0.7 mm | 4 | |
| 17 Sept. | Light rain | 17° /14° | 9.9 mm | 4 | |
| 18 Sept. | Light rain | 18° /14° | 3 mm | 4 | |
| 19 Sept. | Light rain | 18° /15° | 4.3 mm | 4 | |
| 20 Sept. | Light rain | 17° /13° | 8.2 mm | 3 | |
| 21 Sept. | Light rain | 16° /11° | 5.2 mm | 3 | |
| 22 Sept. | Light rain | 16° /12° | 3.6 mm | 3 | |
| 23 Sept. | Patchy rain possible | 15° /11° | 1.8 mm | 3 | |
| 24 Sept. | Light rain | 16° /12° | 3.1 mm | 3 | |
| 25 Sept. | Light rain | 16° /12° | 4 mm | 3 | |
| 26 Sept. |  Moderate or heavy rain with thunder | 15° /11° | 7.6 mm | 3 | |
| 27 Sept. | Light rain | 15° /12° | 5.2 mm | 3 | |
| 28 Sept. | Patchy rain possible | 15° /11° | 2.3 mm | 3 | |
| 29 Sept. | Light rain | 16° /11° | 5.1 mm | 3 | |
| 30 Sept. | Light rain | 16° /12° | 6.6 mm | 3 | |
| Next | |||||
Important Notice
Our weather forecast for City and County of Swansea 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 City and County of Swansea forecast closer to your planned date for the most up-to-date weather information.
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City and County of Swansea in September - FAQ
What are the expected maximum and minimum temperatures in City and County of Swansea during September?
Enjoy moderate daytime temperatures of up to 17° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in City and County of Swansea during September?
Significant rainfall exceeding 139.4 mm is expected in City and County of Swansea during September, occurring over more than 18 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in City and County of Swansea during September?
The average wind speed in City and County of Swansea during September is 28 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in City and County of Swansea
Explore the daily rainfall trends and prepare for City and County of Swanseas September weather 💧
Typically, City and County of Swansea has 18 rainy days in September with a total of 139.4 mm of rainfall.
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