Cardiff
July
Weather in Cardiff for July 2025
Your guide to Cardiff weather in July - trends and predictions
High Temperature Warning - See hour by hour.
So far, July 2025 in Cardiff is slightly warmer than the historical average by 1.3 °C.
In general, the average temperature in Cardiff at the beginning of July is 17.9 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 20.4 °C by the end of July.
Cardiff experiences heavy rainfall in July, with over 20 rainy days and an average total precipitation 117.4 mm.
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7
Dry days
24
Rainy days
0
Snow days
18°/12°
Temperatures
24 km/h
Avg max wind
81 %
Avg humidity
Cardiff Weather July
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Temperatures trend during July in Cardiff
See the weather trend as well as the moving average line
July weather in Cardiff day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Jul. |  Overcast | 19° /12° | 0.3 mm | 4 | |
| 2 Jul. | Overcast | 18° /10° | 0.4 mm | 4 | |
| 3 Jul. |  Patchy rain possible | 17° /10° | 0.8 mm | 4 | |
| 4 Jul. |  Moderate or heavy rain shower | 17° /10° | 3.5 mm | 4 | |
| 5 Jul. |  Cloudy | 17° /12° | 4.2 mm | 4 | |
| 6 Jul. | Patchy rain possible | 17° /11° | 2.5 mm | 4 | |
| 7 Jul. |  Sunny | 20° /11° | 0.7 mm | 5 | |
| 8 Jul. | Moderate rain at times | 19° /11° | 5.4 mm | 5 | |
| 9 Jul. | Light rain shower | 20° /12° | 5.5 mm | 5 | |
| 10 Jul. | Moderate rain at times | 21° /12° | 4.1 mm | 5 | |
| 11 Jul. |  Heavy rain at times | 21° /13° | 2.7 mm | 5 | |
| 12 Jul. | Patchy rain possible | 21° /13° | 0.7 mm | 5 | |
| 13 Jul. | Patchy rain possible | 21° /13° | 1.3 mm | 5 | |
| 14 Jul. | Moderate or heavy rain shower | 19° /11° | 8.9 mm | 4 | |
| 15 Jul. | Moderate or heavy rain shower | 17° /12° | 13.6 mm | 4 | |
| 16 Jul. | Moderate rain at times | 19° /13° | 2.7 mm | 4 | |
| 17 Jul. | Patchy rain possible | 20° /13° | 1.5 mm | 4 | |
| 18 Jul. | Patchy rain possible | 21° /13° | 0.8 mm | 5 | |
| 19 Jul. | Cloudy | 22° /14° | 0.6 mm | 5 | |
| 20 Jul. | Light rain shower | 19° /12° | 8.6 mm | 4 | |
| 21 Jul. | Patchy rain possible | 19° /11° | 1.3 mm | 4 | |
| 22 Jul. | Patchy rain possible | 19° /12° | 8.9 mm | 4 | |
| 23 Jul. | Light rain shower | 20° /14° | 3.4 mm | 4 | |
| 24 Jul. | Moderate or heavy rain shower | 19° /12° | 2.4 mm | 4 | |
| 25 Jul. | Patchy rain possible | 20° /12° | 0.6 mm | 5 | |
| 26 Jul. | Patchy rain possible | 19° /11° | 3.1 mm | 4 | |
| 27 Jul. | Patchy rain possible | 19° /13° | 0.9 mm | 4 | |
| 28 Jul. | Patchy rain possible | 20° /12° | 0.5 mm | 5 | |
| 29 Jul. | Patchy rain possible | 21° /12° | 1.5 mm | 5 | |
| 30 Jul. | Moderate rain at times | 21° /14° | 2.3 mm | 5 | |
| 31 Jul. | Patchy rain possible | 23° /14° | 2.8 mm | 1.6 | |
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Important Notice
Our weather forecast for Cardiff in July 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 July - FAQ
What are the expected maximum and minimum temperatures in Cardiff during July?
Enjoy moderate daytime temperatures of up to 18° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Cardiff during July?
Significant rainfall exceeding 117.4 mm is expected in Cardiff during July, occurring over more than 24 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Cardiff during July?
The average wind speed in Cardiff during July is 24 km/h, suggesting breezy to windy conditions, depending on your activities.
July rainfall patterns in Cardiff
Explore the daily rainfall trends and prepare for Cardiffs July weather 💧
UV exposure in Cardiff during July
Stay informed about UV levels for safe outdoor activities throughout the month of July ☀️
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