Weather in Portsmouth in August
How warm is it in Portsmouth in August?
In August the typical daytime high in Portsmouth is 21.6 °C on average, from 22.0 °C at the start to 20.7 °C at the end of the month.
That is 0.2 °C cooler than in July and 2.4 °C warmer than in September.
The last 10 years were 1.9 °C warmer than more than 40 years ago.
Click a day for more: afternoon and night, the usual range, records and how fast it is warming.
The average of the weather stations Oxford (108 km), Pte De La Hague (134 km) and Abbeville (220 km); nearer ones count more.