Portsmouth in august: average Weather, Temperature and Climate
Weather in Portsmouth in august 2025
The weather in Portsmouth in the month of august comes from statistical datas on the past years. You can view the weather statistics for all the month, but also by clicking on the tabs for the beginning, the middle and the end of the month.
Average weather throughout august
good weather
Weather at 6am
61°F
Partly Cloudy
34% of time
31%
17%
15%
Weather at 12pm
68°F
Clear/Sunny
36% of time
30%
17%
15%
Weather at 6pm
67°F
Clear/Sunny
40% of time
27%
17%
13%
Weather at 3am
61°F
35%
27%
23%
11%
Evolution of daily average temperature and precipitation in Portsmouth in august
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Portsmouth in august.
The climate of Portsmouth in august is good
In august in Portsmouth, the climate is wet (with 3.2in of precipitation over 5 days). Unfortunately, the weather conditions is worsening than the previous month since in july there is an average of 3.1in of precipitation over 5 days.
The climate pleasant here this month. The thermometer averaged maximum of 68°F. The seasonal minimum is 61°F. Thus, the mean temperature average on this month of august in Portsmouth is 65°F. Note that seasonal normals in contrast with those observed in Portsmouth in august with a maximum record of 81°F in 2016 and a minimum record of 43°F in 2021. You can plan to have about 28 days with temperatures over 65°F, or 90% of time.
Day length in Portsmouth in august is 14:33. Sunrise is at 04:52 and sets at 19:25.
With good weather conditions, the month of august is a good month to go in this locality.
Seasonal average climate and temperature of Portsmouth in august
Check below seasonal norms These datas are compiled from the weather statements of the past years of the month of august.
| August | |||||
| Outside temperature | |||||
| Average temperature | 65°F | ||||
| Highest temperature | 68°F | ||||
| Lowest temperature | 61°F | ||||
| Highest record temperature | 81°F (2016) | ||||
| Lowest record temperature | 43°F (2021) | ||||
| Number of days at +65°F | 28 day(s) (90%) | ||||
| Sea temperature | |||||
| Average sea temperature | 63°F | ||||
| Lowest sea temperature | 61°F | ||||
| Highest sea temperature | 65°F | ||||
| Wind | |||||
| Wind speed | 23km/h | ||||
| Wind temperature | 59°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 3.2in | ||||
| Number of days with rainfall | 5 day(s) (16%) | ||||
| Record daily rainfall | 1.3in (2015) | ||||
| Other climate data | |||||
| Humidity | 88% | ||||
| Visibility | 9.48km | ||||
| Cloud cover | 40% | ||||
| UV index | 5 | ||||
| Daily sunshine hours | 13 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 04:52 | ||||
| Time of sunset | 19:25 | ||||
| Length of day | 14:33 | ||||
| Our opinion about the weather in august | |||||
| Our opinion at whereandwhen.net | good | ||||
How was the weather last august?
Here is the day by day recorded weather in Portsmouth in august 2024:
65°F to 77°F
61°F to 72°F
65°F to 70°F
56°F to 67°F
61°F to 70°F
67°F to 68°F
59°F to 67°F
61°F to 67°F
65°F to 72°F
63°F to 70°F
65°F to 74°F
68°F to 77°F
58°F to 70°F
65°F to 72°F
58°F to 67°F
63°F to 72°F
54°F to 70°F
56°F to 72°F
58°F to 67°F
65°F to 68°F
54°F to 67°F
61°F to 65°F
65°F to 68°F
58°F to 65°F
56°F to 65°F
61°F to 68°F
61°F to 70°F
63°F to 74°F
56°F to 68°F
56°F to 70°F
58°F to 67°F
Map: other cities in England in august
Cities near Portsmouth:
| Isle of Wight in august | good weather |
| Southampton in august | good weather |
| Worthing in august | good weather |
| Bournemouth in august | good weather |
| Stonehenge in august | good weather |
| Brighton in august | good weather |
| Seven Sisters in august | good weather |
| Dorset in august | good weather |
| Eastbourne in august | good weather |
| Swindon in august | good weather |
| Weymouth in august | good weather |
| Isle of Portland in august | good weather |
Click over cities on the map for information about the weather in august.
Portsmouth
perfect weather
good
tolerable
bad
very bad
Weather data for Portsmouth in august:
Weather data for Portsmouth for august are derived from an average of the weather forecast since 2009 in Portsmouth. There is a margin of error and these forecasts are to be considered as general information only. The weather in Portsmouth can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Portsmouth.