Portsmouth Weather in August
What's the weather like in Portsmouth (Saint John) in August 2024?
The climate in Portsmouth during August can be summarized as hot, humid and very wet.
August is in the summer in Portsmouth and is typically the warmest month of the year. Daytime maximum temperatures average around a steamy 31°C (88°F), whilst at night 24°C (75°F) is normal.
| Daytime temperature | 30.9°C 87.5°F |
|---|---|
| Nightly temperature | 23.8°C 74.8°F |
| Average temperature | 27.3°C 81.1°F |
| Daily sunshine | 8.3 hrs |
| Avg rainfall | 243 mm 9.6 ins |
| Rainy days | 20 days |
| Sea temperature | 28.7°C 83.6°F |
| Humidity | 80% |
| Windspeed | 18.4kph 11 mph |
On average August is the 4th wettest month of the year in Portsmouth with around 243mm 9.6 inches of rain making it a very wet time to visit. This rainfall is typically spread over 20 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.3 hours of sunshine per day.
August temperatures in Portsmouth
August rainfall
August hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Portsmouth in August 2024.
Other monthly averages
Best places to visit in August
Portsmouth weather stats
| Hottest month: | July | 30.6°C 87.1°F |
|---|---|---|
| Driest month: | February | 95mm 3.7ins |
| Sunniest month: | April | 8.6hrs |
| Coldest month: | February | 28.3°C 82.9°F |
| Wettest month: | November | 301mm 11.9ins |
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