Cardiff
July
Weather in Cardiff for July 2025
Your guide to Cardiff weather in July - trends and predictions
In general, the average temperature in Cardiff at the beginning of July is 17.4 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 19.9 °C by the end of July.
Cardiff experiences an exceptionally high level of rainfall in July, with more than 24 rainy days on average.
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5
Dry days
26
Rainy days
0
Snow days
19°/12°
Temperatures
28 km/h
Avg max wind
80 %
Avg humidity
Cardiff in July average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  18° | 2 17° | 3  17° | 4  16° | 5  17° | 6 17° | |
| 7  20° | 8 18° | 9 19° | 10 19° | 11  18° | 12 18° | 13 18° |
| 14 18° | 15 17° | 16 18° | 17 19° | 18 20° | 19 21° | 20 19° |
| 21 18° | 22 18° | 23 19° | 24 18° | 25 19° | 26 18° | 27 19° |
| 28 20° | 29 21° | 30 21° | 31 21° |
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Temperatures trend during July in Cardiff
See the weather trend as well as the moving average line
July weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Jul. | Overcast | 18° /11° | 0.3 mm | 4 | |
| 2 Jul. | Overcast | 17° /10° | 0.1 mm | 4 | |
| 3 Jul. | Patchy rain possible | 17° /11° | 1.2 mm | 4 | |
| 4 Jul. | Moderate or heavy rain shower | 16° /10° | 5.2 mm | 4 | |
| 5 Jul. | Cloudy | 17° /11° | 5 mm | 4 | |
| 6 Jul. | Patchy rain possible | 17° /10° | 3.3 mm | 4 | |
| 7 Jul. | Sunny | 20° /11° | 0.9 mm | 5 | |
| 8 Jul. | Moderate rain at times | 18° /12° | 8.1 mm | 4 | |
| 9 Jul. | Moderate or heavy rain shower | 19° /12° | 7.6 mm | 5 | |
| 10 Jul. | Moderate rain at times | 19° /11° | 6.1 mm | 4 | |
| 11 Jul. | Heavy rain at times | 18° /12° | 4.1 mm | 4 | |
| 12 Jul. | Patchy rain possible | 18° /11° | 1.1 mm | 4 | |
| 13 Jul. | Patchy rain possible | 18° /12° | 1.9 mm | 4 | |
| 14 Jul. | Moderate or heavy rain shower | 18° /11° | 12.8 mm | 4 | |
| 15 Jul. | Moderate or heavy rain shower | 17° /12° | 15.2 mm | 4 | |
| 16 Jul. | Moderate rain at times | 18° /13° | 3.9 mm | 4 | |
| 17 Jul. | Patchy rain possible | 19° /12° | 1.8 mm | 4 | |
| 18 Jul. | Moderate rain at times | 20° /12° | 1.1 mm | 5 | |
| 19 Jul. | Cloudy | 21° /13° | 0.1 mm | 6 | |
| 20 Jul. | Patchy rain possible | 19° /12° | 6.6 mm | 4 | |
| 21 Jul. | Patchy rain possible | 18° /11° | 0.3 mm | 4 | |
| 22 Jul. | Moderate or heavy rain shower | 18° /12° | 12.9 mm | 4 | |
| 23 Jul. | Patchy rain possible | 19° /15° | 2.8 mm | 4 | |
| 24 Jul. | Moderate or heavy rain shower | 18° /12° | 3.5 mm | 4 | |
| 25 Jul. | Patchy rain possible | 19° /12° | 0.9 mm | 4 | |
| 26 Jul. | Moderate or heavy rain shower | 18° /10° | 4.5 mm | 4 | |
| 27 Jul. | Patchy rain possible | 19° /14° | 0.9 mm | 5 | |
| 28 Jul. | Patchy rain possible | 20° /13° | 0.6 mm | 5 | |
| 29 Jul. | Patchy rain possible | 21° /13° | 0.6 mm | 5 | |
| 30 Jul. | Moderate rain at times | 21° /14° | 2.3 mm | 5 | |
| 31 Jul. | Moderate rain at times | 21° /15° | 1.6 mm | 5 | |
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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.
Cardiff in July - FAQ
What are the expected maximum and minimum temperatures in Cardiff during July?
Enjoy moderate daytime temperatures of up to 19° 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 158.6 mm is expected in Cardiff during July, occurring over more than 26 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 28 km/h, suggesting breezy to windy conditions, depending on your activities.
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