Swansea
August
Weather in Swansea for August 2025
Your guide to Swansea weather in August - trends and predictions
In general, the average temperature in Swansea at the beginning of August is 17.4 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of 17 °C by the end of August.
Swansea experiences an exceptionally high level of rainfall in August, with more than 24 rainy days on average.
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5
Dry days
26
Rainy days
0
Snow days
17°/14°
Temperatures
26 km/h
Avg max wind
83 %
Avg humidity
Swansea in August average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  19° | 2  18° | 3 18° | ||||
| 4  16° | 5 18° | 6 17° | 7 16° | 8  17° | 9 18° | 10 20° |
| 11 20° | 12 18° | 13 18° | 14 18° | 15 18° | 16  18° | 17 19° |
| 18 19° | 19 18° | 20 17° | 21 17° | 22 17° | 23 18° | 24 17° |
| 25 16° | 26 16° | 27 17° | 28 18° | 29 17° | 30 17° | 31 18° |
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Temperatures trend during August in Swansea
See the weather trend as well as the moving average line
August weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Aug. | Patchy rain possible | 19° /14° | 2.2 mm | 5 | |
| 2 Aug. | Moderate or heavy rain shower | 18° /14° | 7.6 mm | 4 | |
| 3 Aug. | Patchy rain possible | 18° /14° | 0.6 mm | 4 | |
| 4 Aug. | Overcast | 16° /13° | 0.1 mm | 4 | |
| 5 Aug. | Moderate or heavy rain shower | 18° /13° | 7.9 mm | 4 | |
| 6 Aug. | Patchy rain possible | 17° /12° | 2.2 mm | 4 | |
| 7 Aug. | Patchy rain possible | 16° /13° | 1.1 mm | 4 | |
| 8 Aug. | Heavy rain at times | 17° /14° | 6.1 mm | 4 | |
| 9 Aug. | Patchy rain possible | 18° /14° | 0.3 mm | 4 | |
| 10 Aug. | Patchy rain possible | 20° /15° | 1.3 mm | 5 | |
| 11 Aug. | Patchy rain possible | 20° /15° | 2.2 mm | 5 | |
| 12 Aug. | Moderate or heavy rain shower | 18° /14° | 8.7 mm | 4 | |
| 13 Aug. | Patchy rain possible | 18° /14° | 4.1 mm | 4 | |
| 14 Aug. | Moderate or heavy rain shower | 18° /14° | 10.7 mm | 4 | |
| 15 Aug. | Patchy rain possible | 18° /14° | 4.1 mm | 4 | |
| 16 Aug. | Cloudy | 18° /12° | 0 mm | 5 | |
| 17 Aug. | Patchy rain possible | 19° /14° | 0.4 mm | 5 | |
| 18 Aug. | Moderate or heavy rain shower | 19° /14° | 6.7 mm | 5 | |
| 19 Aug. | Moderate rain at times | 18° /15° | 15.3 mm | 4 | |
| 20 Aug. | Patchy rain possible | 17° /14° | 1.8 mm | 4 | |
| 21 Aug. | Moderate rain at times | 17° /13° | 3.2 mm | 4 | |
| 22 Aug. | Patchy rain possible | 17° /15° | 2.8 mm | 4 | |
| 23 Aug. | Patchy rain possible | 18° /14° | 7.3 mm | 4 | |
| 24 Aug. | Patchy rain possible | 17° /12° | 3 mm | 4 | |
| 25 Aug. | Light rain shower | 16° /12° | 3.8 mm | 4 | |
| 26 Aug. | Light rain shower | 16° /13° | 3.9 mm | 4 | |
| 27 Aug. | Patchy rain possible | 17° /13° | 0.5 mm | 4 | |
| 28 Aug. | Patchy rain possible | 18° /13° | 1 mm | 4 | |
| 29 Aug. | Light rain shower | 17° /13° | 1 mm | 4 | |
| 30 Aug. | Patchy rain possible | 17° /11° | 0.2 mm | 5 | |
| 31 Aug. | Moderate or heavy rain shower | 18° /13° | 13.4 mm | 4 | |
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Important Notice
Our weather forecast for Swansea in August 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 Swansea forecast closer to your planned date for the most up-to-date weather information.
Swansea in August - FAQ
What are the expected maximum and minimum temperatures in Swansea during August?
Enjoy moderate daytime temperatures of up to 17° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Swansea during August?
Significant rainfall exceeding 160.1 mm is expected in Swansea during August, occurring over more than 26 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Swansea during August?
The average wind speed in Swansea during August is 26 km/h, suggesting breezy to windy conditions, depending on your activities.
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