Portsmouth
July
Weather in Portsmouth for July 2025
Your guide to Portsmouth weather in July - trends and predictions
Yellow thunderstorm warning - See hour by hour.
So far, July 2025 in Portsmouth is slightly warmer than the historical average by 0.9 °C.
In general, the average temperature in Portsmouth at the beginning of July is 19.4 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 20.4 °C by the end of July.
Portsmouth in July brings notable rainfall, with an average of 19 rainy days and a total precipitation of 71.4 mm.
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Temperatures
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12
Dry days
19
Rainy days
0
Snow days
19°/14°
Temperatures
28 km/h
Avg max wind
77 %
Avg humidity
Portsmouth Weather July
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Temperatures trend during July in Portsmouth
See the weather trend as well as the moving average line
July weather in Portsmouth day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Jul. |  Overcast | 22° /15° | 0.2 mm | 5 | |
| 2 Jul. |  Patchy rain possible | 20° /13° | 0.1 mm | 4 | |
| 3 Jul. | Patchy rain possible | 18° /12° | 0.7 mm | 4 | |
| 4 Jul. |  Moderate rain at times | 19° /12° | 2.2 mm | 4 | |
| 5 Jul. | Patchy rain possible | 18° /14° | 3.7 mm | 4 | |
| 6 Jul. | Patchy rain possible | 18° /13° | 3.7 mm | 4 | |
| 7 Jul. |  Sunny | 21° /13° | 1.1 mm | 5 | |
| 8 Jul. | Patchy rain possible | 20° /14° | 2 mm | 5 | |
| 9 Jul. | Patchy rain possible | 20° /14° | 2.2 mm | 5 | |
| 10 Jul. | Patchy rain possible | 21° /15° | 0.2 mm | 5 | |
| 11 Jul. | Overcast | 20° /15° | 0.6 mm | 5 | |
| 12 Jul. | Patchy rain possible | 19° /14° | 2.1 mm | 5 | |
| 13 Jul. | Patchy rain possible | 19° /13° | 0.2 mm | 4 | |
| 14 Jul. | Patchy rain possible | 19° /14° | 5.1 mm | 4 | |
| 15 Jul. | Light rain shower | 18° /14° | 4.7 mm | 4 | |
| 16 Jul. | Patchy rain possible | 20° /14° | 0.6 mm | 5 | |
| 17 Jul. | Patchy rain possible | 20° /14° | 0.2 mm | 4 | |
| 18 Jul. |  Cloudy | 21° /15° | 0 mm | 5 | |
| 19 Jul. | Patchy rain possible | 21° /16° | 0.6 mm | 5 | |
| 20 Jul. | Light rain shower | 20° /14° | 4 mm | 4 | |
| 21 Jul. | Moderate rain at times | 20° /13° | 3.1 mm | 4 | |
| 22 Jul. |  Heavy rain at times | 19° /13° | 2.9 mm | 4 | |
| 23 Jul. | Light rain shower | 21° /15° | 2.6 mm | 5 | |
| 24 Jul. | Heavy rain at times | 20° /15° | 2.2 mm | 4 | |
| 25 Jul. | Moderate rain at times | 20° /15° | 5.1 mm | 5 | |
| 26 Jul. | Patchy rain possible | 20° /13° | 1.8 mm | 4 | |
| 27 Jul. | Patchy rain possible | 20° /14° | 1.8 mm | 4 | |
| 28 Jul. | Patchy rain possible | 20° /14° | 0.3 mm | 5 | |
| 29 Jul. | Patchy rain possible | 20° /15° | 1.7 mm | 5 | |
| 30 Jul. | Moderate rain at times | 21° /16° | 1.3 mm | 5 | |
| 31 Jul. |  Moderate rain | 22° /16° | 10.5 mm | 1.1 | |
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Important Notice
Our weather forecast for Portsmouth 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 Portsmouth forecast closer to your planned date for the most up-to-date weather information.
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Portsmouth in July - FAQ
What are the expected maximum and minimum temperatures in Portsmouth during July?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Portsmouth during July?
Moderate rainfall is anticipated in Portsmouth during July, with a total of 71.4 mm spread over approximately 19 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Portsmouth during July?
The average wind speed in Portsmouth during July is 28 km/h, suggesting breezy to windy conditions, depending on your activities.
July rainfall patterns in Portsmouth
Explore the daily rainfall trends and prepare for Portsmouths July weather 💧
UV exposure in Portsmouth during July
Stay informed about UV levels for safe outdoor activities throughout the month of July ☀️
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