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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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Average dry days
5
Dry days
Average rainy days
26
Rainy days
Average snowy days
0
Snow days
Average temperatures
20°/14°
Temperatures
Average wind speed
31 km/h
Avg max wind
Average humidity
77 %
Avg humidity

Portsmouth in July average weather

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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
Overcast
21° /14° 0.3 mm 5
2 Jul. Overcast
Overcast
18° /12° 0.1 mm 4
3 Jul. Patchy rain possible
Patchy rain possible
17° /13° 1 mm 4
4 Jul. Moderate rain at times
Moderate rain at times
18° /12° 3.3 mm 4
5 Jul. Patchy rain possible
Patchy rain possible
18° /13° 4.3 mm 4
6 Jul. Patchy rain possible
Patchy rain possible
17° /12° 5.2 mm 4
7 Jul. Sunny
Sunny
20° /13° 1.4 mm 5
8 Jul. Patchy rain possible
Patchy rain possible
19° /15° 3 mm 5
9 Jul. Patchy rain possible
Patchy rain possible
19° /15° 3.3 mm 5
10 Jul. Patchy rain possible
Patchy rain possible
19° /14° 0.3 mm 5
11 Jul. Overcast
Overcast
19° /14° 0.8 mm 5
12 Jul. Patchy rain possible
Patchy rain possible
18° /13° 3.2 mm 4
13 Jul. Patchy rain possible
Patchy rain possible
18° /13° 0.3 mm 4
14 Jul. Moderate or heavy rain shower
Moderate or heavy rain shower
18° /13° 7.6 mm 4
15 Jul. Patchy rain possible
Patchy rain possible
18° /14° 6.3 mm 4
16 Jul. Patchy rain possible
Patchy rain possible
19° /14° 0.8 mm 4
17 Jul. Patchy rain possible
Patchy rain possible
19° /13° 0.2 mm 4
18 Jul. Cloudy
Cloudy
20° /14° 0 mm 5
19 Jul. Patchy rain possible
Patchy rain possible
22° /15° 0.5 mm 6
20 Jul. Patchy rain possible
Patchy rain possible
20° /14° 1.9 mm 5
21 Jul. Moderate rain at times
Moderate rain at times
20° /13° 0.8 mm 4
22 Jul. Heavy rain at times
Heavy rain at times
18° /13° 4 mm 4
23 Jul. Patchy rain possible
Patchy rain possible
21° /16° 1.3 mm 5
24 Jul. Heavy rain at times
Heavy rain at times
19° /14° 2.7 mm 4
25 Jul. Moderate rain at times
Moderate rain at times
19° /14° 7.7 mm 5
26 Jul. Moderate rain at times
Moderate rain at times
19° /12° 2.7 mm 4
27 Jul. Patchy rain possible
Patchy rain possible
19° /14° 2.6 mm 4
28 Jul. Patchy rain possible
Patchy rain possible
20° /15° 0.4 mm 5
29 Jul. Patchy rain possible
Patchy rain possible
20° /15° 0.2 mm 5
30 Jul. Moderate rain at times
Moderate rain at times
21° /16° 1.3 mm 5
31 Jul. Heavy rain at times
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.

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Location coordinates Where is Portsmouth?

Get accurate weather forecasts for Portsmouth, located at latitude 50.799 and longitude -1.091. Stay updated with localized weather information tailored for Portsmouth.

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