Temperatures in August
It's pleasantly warm in August in Cardiff with an average temperature of 20°C. Temperatures this month range from a low of 19°C to a high of 21°C. At night, you can expect temperatures between 11°C and 15°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Cardiff in August. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of August
The month of August starts in Cardiff with mild temperatures, averaging around 21°C during the day and nights close to 14°C. You can expect regular precipitation, but there’s also a chance for some sunny days in the first days of the month.
Mid-August
By mid-August, the average daytime temperature drops to around 20°C, with nights close to 15°C. There might be a few showers during this period, but plenty of dry days with sunshine too.
End of August
By the end of August, the average daytime temperature in Cardiff will be around 20°C, with nights close to 13°C. A shower might show up, but overall the weather will be dry and sunny.
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Precipitation in August
In August, there is an average of 95 mm of precipitation, spread over 15 days. The wind speed is around 4 Bft, mostly coming from the Southwest.
The average precipitation chance is 47% per day this month. Though it seems average, the weather’s variable. Some days have higher, others lower precipitation chances.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in August for Cardiff. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Cardiff in August |
London | ||
|---|---|---|---|
 Average Temperature |
20°C | 22°C | |
 High Temp |
21°C | 24°C | |
| Low Temp |
19°C | 19°C | |
 Total Precipitation |
95 mm | 60 mm | |
| Rainy Days |
15 days | 10 days | |
July
UV index
The UV index is a maximum of 7 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Is August a good time to visit Cardiff?
Want nice weather? Then August is a great time to be in Cardiff. You’ll have pleasant temperatures and not too much rain this month.
Temperature records for Cardiff in August
With 31°C, Cardiff hit the highest temperature in the last 10 years in August 2022. The lowest daytime temperature in this month was 14°C in 2020. The extreme night temperatures ranged from a low of 4°C to a high of 19°C.
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Daily Temperature in August in Cardiff
This chart shows the average daily temperatures, both day and night, for each day in August in Cardiff, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in August in Cardiff
The chart below shows the average daily precipitation in August for Cardiff, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for August, you can expect around 15 days of rain in Cardiff.
Daily UV Index in August in Cardiff
This chart shows the average daily UV index in August in Cardiff, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in August in Cardiff Over the Years
This chart shows the average temperature in August in Cardiff, measured in degrees Celsius, over the past years.
Total Precipitation in August in Cardiff Over the Years
This chart shows the average precipitation in August in Cardiff, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in August for Cardiff
Click on a specific day in August for detailed info on the typical weather on that day in Cardiff. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in August in Cardiff
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Average Weather in Cardiff by Month
Click on a month below to see detailed weather info for Cardiff. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
