Weather in Portsmouth in August
The weather in Portsmouth in August is extremely hot, while temperatures can easily rise above 31 degrees. This hot weather is not advisable for long walks and outdoors activity, so please prepare for summer conditions with water and comfortable light clothes for a trip in Portsmouth during August.
Avg Temp
21° - 31°
Avg Rainy Days
14
Avg Dry Days
17
Avg Snow Days
0
Weather Facts - Portsmouth in August
* The warmest temperature recorded in in August is 39°C
* The coldest temperature recorded in Portsmouth in August is 14°C
* The average rainfall in Portsmouth in August is 158 mm