Weather in Portsmouth in December
The weather in Portsmouth in December is extremely hot, while temperatures can easily rise above 30 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 December.
Avg Temp
22° - 30°
Avg Rainy Days
19
Avg Dry Days
12
Avg Snow Days
0
Weather Facts - Portsmouth in December
* The warmest temperature recorded in in December is 37°C
* The coldest temperature recorded in Portsmouth in December is 18°C
* The average rainfall in Portsmouth in December is 91 mm