Portsmouth
July
Weather in Portsmouth for July 2025
Your guide to Portsmouth weather in July - trends and predictions
In general, the average temperature in Portsmouth at the beginning of July is 18.4 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 19.7 °C by the end of July.
Portsmouth 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
20°/14°
Temperatures
31 km/h
Avg max wind
77 %
Avg humidity
Portsmouth in July average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  21° | 2 18° | 3  17° | 4  18° | 5 18° | 6 17° | |
| 7  20° | 8 19° | 9 19° | 10 19° | 11 19° | 12 18° | 13 18° |
| 14 18° | 15 18° | 16 19° | 17 19° | 18  20° | 19 22° | 20 20° |
| 21 20° | 22  18° | 23 21° | 24 19° | 25 19° | 26 19° | 27 19° |
| 28 20° | 29 20° | 30 21° | 31 20° |
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Temperatures trend during July in Portsmouth
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 | 21° /14° | 0.3 mm | 5 | |
| 2 Jul. | Overcast | 18° /12° | 0.1 mm | 4 | |
| 3 Jul. | Patchy rain possible | 17° /13° | 1 mm | 4 | |
| 4 Jul. | Moderate rain at times | 18° /12° | 3.3 mm | 4 | |
| 5 Jul. | Patchy rain possible | 18° /13° | 4.3 mm | 4 | |
| 6 Jul. | Patchy rain possible | 17° /12° | 5.2 mm | 4 | |
| 7 Jul. | Sunny | 20° /13° | 1.4 mm | 5 | |
| 8 Jul. | Patchy rain possible | 19° /15° | 3 mm | 5 | |
| 9 Jul. | Patchy rain possible | 19° /15° | 3.3 mm | 5 | |
| 10 Jul. | Patchy rain possible | 19° /14° | 0.3 mm | 5 | |
| 11 Jul. | Overcast | 19° /14° | 0.8 mm | 5 | |
| 12 Jul. | Patchy rain possible | 18° /13° | 3.2 mm | 4 | |
| 13 Jul. | Patchy rain possible | 18° /13° | 0.3 mm | 4 | |
| 14 Jul. | Moderate or heavy rain shower | 18° /13° | 7.6 mm | 4 | |
| 15 Jul. | Patchy rain possible | 18° /14° | 6.3 mm | 4 | |
| 16 Jul. | Patchy rain possible | 19° /14° | 0.8 mm | 4 | |
| 17 Jul. | Patchy rain possible | 19° /13° | 0.2 mm | 4 | |
| 18 Jul. | Cloudy | 20° /14° | 0 mm | 5 | |
| 19 Jul. | Patchy rain possible | 22° /15° | 0.5 mm | 6 | |
| 20 Jul. | Patchy rain possible | 20° /14° | 1.9 mm | 5 | |
| 21 Jul. | Moderate rain at times | 20° /13° | 0.8 mm | 4 | |
| 22 Jul. | Heavy rain at times | 18° /13° | 4 mm | 4 | |
| 23 Jul. | Patchy rain possible | 21° /16° | 1.3 mm | 5 | |
| 24 Jul. | Heavy rain at times | 19° /14° | 2.7 mm | 4 | |
| 25 Jul. | Moderate rain at times | 19° /14° | 7.7 mm | 5 | |
| 26 Jul. | Moderate rain at times | 19° /12° | 2.7 mm | 4 | |
| 27 Jul. | Patchy rain possible | 19° /14° | 2.6 mm | 4 | |
| 28 Jul. | Patchy rain possible | 20° /15° | 0.4 mm | 5 | |
| 29 Jul. | Patchy rain possible | 20° /15° | 0.2 mm | 5 | |
| 30 Jul. | Moderate rain at times | 21° /16° | 1.3 mm | 5 | |
| 31 Jul. | Heavy rain at times | 20° /17° | 3.9 mm | 5 | |
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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.
Portsmouth in July - FAQ
What are the expected maximum and minimum temperatures in Portsmouth during July?
Enjoy moderate daytime temperatures of up to 20° 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 68.9 mm spread over approximately 26 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 31 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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