Cardiff
August
Weather in Cardiff for August 2026
Your guide to Cardiff weather in August - trends and predictions
The forecast for the first days of August 2026 in Cardiff predicts temperatures to be around 22 °C, close to the historical average.
In general, the average temperature in Cardiff at the beginning of August is 21.1 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 19 °C by the end of August.
The climate of Cardiff in August is notably wet, with an average of 11 rainy days, and a total of 63.6 mm of precipitation.
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Temperatures
Rain 🌧️
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20
Dry days
11
Rainy days
0
Snow days
20°/13°
Temperatures
25 km/h
Avg max wind
77 %
Avg humidity
Cardiff Weather August
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Temperatures trend during August in Cardiff
See the weather trend as well as the moving average line
August weather in Cardiff day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Aug. |  Sunny | 21° /10° | 0 mm | 6.4 | |
| 2 Aug. |  Partly cloudy | 24° /13° | 0 mm | 6.1 | |
| 3 Aug. | Partly cloudy | 21° /15° | 0 mm | 6 | |
| 4 Aug. | Partly cloudy | 22° /11° | 0 mm | 6 | |
| 5 Aug. | Partly cloudy | 21° /14° | 0.6 mm | 6 | |
| 6 Aug. |  Light drizzle | 18° /13° | 36.6 mm | 4 | |
| 7 Aug. | Sunny | 21° /14° | 0 mm | 6 | |
| 8 Aug. | Sunny | 22° /11° | 0 mm | 6 | |
| 9 Aug. | Sunny | 22° /14° | 0 mm | 6 | |
| 10 Aug. | Partly cloudy | 22° /15° | 0.3 mm | 6 | |
| 11 Aug. | Partly cloudy | 24° /14° | 0.2 mm | 6 | |
| 12 Aug. |  Heavy rain at times | 23° /14° | 2.2 mm | 5 | |
| 13 Aug. |  Patchy rain possible | 22° /14° | 0.6 mm | 5 | |
| 14 Aug. | Patchy rain possible | 20° /13° | 8.6 mm | 4 | |
| 15 Aug. | Patchy rain possible | 23° /12° | 1.1 mm | 5 | |
| 16 Aug. | Partly cloudy | 23° /12° | 0 mm | 6 | |
| 17 Aug. | Patchy rain possible | 22° /11° | 0.1 mm | 5 | |
| 18 Aug. |  Moderate rain at times | 22° /14° | 4.1 mm | 5 | |
| 19 Aug. | Patchy rain possible | 21° /13° | 5.1 mm | 5 | |
| 20 Aug. | Patchy rain possible | 21° /13° | 0.5 mm | 5 | |
| 21 Aug. | Patchy rain possible | 20° /11° | 0.4 mm | 5 | |
| 22 Aug. | Patchy rain possible | 20° /12° | 0.7 mm | 5 | |
| 23 Aug. | Patchy rain possible | 20° /13° | 2.1 mm | 5 | |
| 24 Aug. |  Cloudy | 20° /12° | 4.4 mm | 5 | |
| 25 Aug. | Light rain shower | 20° /11° | 1.1 mm | 5 | |
| 26 Aug. | Light rain shower | 19° /12° | 1.6 mm | 5 | |
| 27 Aug. | Patchy rain possible | 20° /12° | 1 mm | 5 | |
| 28 Aug. | Partly cloudy | 18° /12° | 4.6 mm | 4 | |
| 29 Aug. | Patchy rain possible | 19° /11° | 0.8 mm | 4 | |
| 30 Aug. | Patchy rain possible | 19° /10° | 2.1 mm | 5 | |
| 31 Aug. | Light rain shower | 18° /12° | 2.2 mm | 4 | |
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Important Notice
Our weather forecast for Cardiff 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 Cardiff forecast closer to your planned date for the most up-to-date weather information.
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Cardiff in August - FAQ
What are the expected maximum and minimum temperatures in Cardiff during August?
Enjoy moderate daytime temperatures of up to 20° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Cardiff during August?
Moderate rainfall is anticipated in Cardiff during August, with a total of 63.6 mm spread over approximately 11 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Cardiff during August?
The average wind speed in Cardiff during August is 25 km/h, suggesting breezy to windy conditions, depending on your activities.
August rainfall patterns in Cardiff
Explore the daily rainfall trends and prepare for Cardiffs August weather 💧
Typically, Cardiff has 11 rainy days in August with a total of 63.6 mm of rainfall.
UV exposure in Cardiff during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
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