Portsmouth
May
Weather in Portsmouth for May 2025
Your guide to Portsmouth weather in May - trends and predictions
In general, the average temperature in Portsmouth at the beginning of May is 13.9 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 17.1 °C by the end of May.
The climate of Portsmouth in May is notably wet, with an average of 15 rainy days, and a total of 60.5 mm of precipitation.
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Temperatures
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16
Dry days
15
Rainy days
0
Snow days
15°/10°
Temperatures
23 km/h
Avg max wind
82 %
Avg humidity
Portsmouth in May average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  15° | 2  13° | 3 13° | 4 14° | |||
| 5 14° | 6  13° | 7 15° | 8  13° | 9 15° | 10 14° | 11 15° |
| 12 14° | 13 16° | 14  16° | 15 14° | 16 15° | 17 15° | 18 16° |
| 19 17° | 20 18° | 21 15° | 22 17° | 23 15° | 24 17° | 25  16° |
| 26 17° | 27 17° | 28 17° | 29 17° | 30  18° | 31 18° |
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Temperatures trend during May in Portsmouth
See the weather trend as well as the moving average line
May weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 May | Patchy rain possible | 15° /9° | 3 mm | 4 | |
| 2 May | Overcast | 13° /8° | 5.3 mm | 3 | |
| 3 May | Overcast | 13° /7° | 0.4 mm | 3 | |
| 4 May | Patchy rain possible | 14° /9° | 0.2 mm | 4 | |
| 5 May | Patchy rain possible | 14° /10° | 2.2 mm | 4 | |
| 6 May | Moderate or heavy rain shower | 13° /10° | 7.8 mm | 3 | |
| 7 May | Patchy rain possible | 15° /10° | 0.6 mm | 4 | |
| 8 May | Heavy rain at times | 13° /10° | 3 mm | 3 | |
| 9 May | Moderate or heavy rain shower | 15° /10° | 6 mm | 4 | |
| 10 May | Patchy rain possible | 14° /10° | 0.8 mm | 4 | |
| 11 May | Patchy rain possible | 15° /9° | 0.6 mm | 4 | |
| 12 May | Moderate or heavy rain shower | 14° /11° | 1.6 mm | 4 | |
| 13 May | Overcast | 16° /10° | 4.8 mm | 4 | |
| 14 May | Cloudy | 16° /10° | 3.8 mm | 4 | |
| 15 May | Patchy rain possible | 14° /10° | 0.4 mm | 3 | |
| 16 May | Cloudy | 15° /9° | 0.3 mm | 4 | |
| 17 May | Overcast | 15° /9° | 0 mm | 4 | |
| 18 May | Patchy rain possible | 16° /11° | 5.7 mm | 4 | |
| 19 May | Patchy rain possible | 17° /11° | 0.3 mm | 4 | |
| 20 May | Overcast | 18° /9° | 0.6 mm | 4 | |
| 21 May | Overcast | 15° /8° | 1.3 mm | 4 | |
| 22 May | Cloudy | 17° /10° | 0.5 mm | 4 | |
| 23 May | Overcast | 15° /9° | 0.1 mm | 4 | |
| 24 May | Cloudy | 17° /8° | 0 mm | 4 | |
| 25 May | Sunny | 16° /9° | 1.6 mm | 4 | |
| 26 May | Sunny | 17° /9° | 1.9 mm | 5 | |
| 27 May | Sunny | 17° /9° | 0.9 mm | 4 | |
| 28 May | Overcast | 17° /10° | 4 mm | 4 | |
| 29 May | Overcast | 17° /10° | 0.8 mm | 4 | |
| 30 May | Partly cloudy | 18° /9° | 1.8 mm | 5 | |
| 31 May | Overcast | 18° /10° | 0.1 mm | 5 | |
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Important Notice
Our weather forecast for Portsmouth in May 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 May - FAQ
What are the expected maximum and minimum temperatures in Portsmouth during May?
During May, expect a variety of temperatures with highs around 15° and lows near 10°, suitable for diverse activities and preferences.
How much rainfall should be expected in Portsmouth during May?
Moderate rainfall is anticipated in Portsmouth during May, with a total of 60.5 mm spread over approximately 15 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Portsmouth during May?
The average wind speed in Portsmouth during May is 23 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Portsmouth
Explore the daily rainfall trends and prepare for Portsmouths May weather 💧
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