Portsmouth weather
The Portsmouth weather guide shows monthly weather averages (including daytime and night-time temperatures, rainfall and hours of sunshine) for holidays in Portsmouth, Hampshire, England in 2023/2024.
Portsmouth weather averages
Check the Portsmouth weather averages for each month of the year including maximum daytime and minimum night-time temperatures, monthly rainfall, number of days with rain and average daily hours of sunshine for Portsmouth, Hampshire, England.
Portsmouth weather by month
Check the weather for Portsmouth, Hampshire, England for a particular month by selecting from the list below. This gives the best indication of what to expect from the weather months in advance.
Portsmouth weather in January
The average maximum daytime temperature in Portsmouth in January is a cold 7°C (45°F), while the average minimum night-time temperature is a cold 3°C (37°F). You can expect on average 2 hours of sunshine a day in Portsmouth during January.
- 7°C max day temperature
7 - 2 hours of sunshine per day
2 - 17 days with some rainfall
17 - 3°C min night temperature
3 - 94 mm of monthly rainfall
94
On average 94 mm (3.7 inches) of rain normally falls in Portsmouth during January with rain falling on 17 days of the month.
Portsmouth weather in February
The average maximum daytime temperature in Portsmouth in February is a cool 8°C (46°F), while the average minimum night-time temperature is a cold 3°C (37°F). You can expect on average 3 hours of sunshine a day in Portsmouth during February.
- 8°C max day temperature
8 - 3 hours of sunshine per day
3 - 13 days with some rainfall
13 - 3°C min night temperature3
- 66 mm of monthly rainfall
66
On average 66 mm (2.6 inches) of rain normally falls in Portsmouth during February with rain falling on 13 days of the month.
Portsmouth weather in March
The average maximum daytime temperature in Portsmouth in March is a cool 10°C (50°F), while the average minimum night-time temperature is a cold 4°C (39°F). You can expect on average 4 hours of sunshine a day in Portsmouth during March.
- 10°C max day temperature10
- 4 hours of sunshine per day
4 - 15 days with some rainfall15
- 4°C min night temperature4
- 68 mm of monthly rainfall68
On average 68 mm (2.7 inches) of rain normally falls in Portsmouth during March with rain falling on 15 days of the month.
Portsmouth weather in April
The average maximum daytime temperature in Portsmouth in April is a cool 12°C (54°F), while the average minimum night-time temperature is a cold 5°C (41°F). You can expect on average 6 hours of sunshine a day in Portsmouth during April.
- 12°C max day temperature
12 - 6 hours of sunshine per day
6 - 12 days with some rainfall
12 - 5°C min night temperature5
- 55 mm of monthly rainfall
55
On average 55 mm (2.2 inches) of rain normally falls in Portsmouth during April with rain falling on 12 days of the month.
Portsmouth weather in May
The average maximum daytime temperature in Portsmouth in May is a comfortable 15°C (59°F), while the average minimum night-time temperature is a cool 8°C (46°F). You can expect on average 7 hours of sunshine a day in Portsmouth during May.
- 15°C max day temperature
15 - 7 hours of sunshine per day
7 - 12 days with some rainfall12
- 8°C min night temperature8
- 50 mm of monthly rainfall50
On average 50 mm (2 inches) of rain normally falls in Portsmouth during May with rain falling on 12 days of the month.
Portsmouth weather in June
The average maximum daytime temperature in Portsmouth in June is a comfortable 18°C (64°F), while the average minimum night-time temperature is a cool 11°C (52°F). You can expect on average 8 hours of sunshine a day in Portsmouth during June.
- 18°C max day temperature
18 - 8 hours of sunshine per day
8 - 10 days with some rainfall10
- 11°C min night temperature11
- 50 mm of monthly rainfall50
On average 50 mm (2 inches) of rain normally falls in Portsmouth during June with rain falling on 10 days of the month.
Portsmouth weather in July
The average maximum daytime temperature in Portsmouth in July is a comfortable 21°C (70°F), while the average minimum night-time temperature is a cool 13°C (55°F). You can expect on average 8 hours of sunshine a day in Portsmouth during July.
- 21°C max day temperature21
- 8 hours of sunshine per day8
- 9 days with some rainfall
9 - 13°C min night temperature13
- 41 mm of monthly rainfall41
On average 41 mm (1.6 inches) of rain normally falls in Portsmouth during July with rain falling on 9 days of the month.
Portsmouth weather in August
The average maximum daytime temperature in Portsmouth in August is a comfortable 21°C (70°F), while the average minimum night-time temperature is a cool 13°C (55°F). You can expect on average 7 hours of sunshine a day in Portsmouth during August.
- 21°C max day temperature21
- 7 hours of sunshine per day7
- 10 days with some rainfall10
- 13°C min night temperature13
- 58 mm of monthly rainfall58
On average 58 mm (2.3 inches) of rain normally falls in Portsmouth during August with rain falling on 10 days of the month.
Portsmouth weather in September
The average maximum daytime temperature in Portsmouth in September is a comfortable 18°C (64°F), while the average minimum night-time temperature is a cool 11°C (52°F). You can expect on average 5 hours of sunshine a day in Portsmouth during September.
- 18°C max day temperature18
- 5 hours of sunshine per day
5 - 12 days with some rainfall12
- 11°C min night temperature11
- 73 mm of monthly rainfall73
On average 73 mm (2.9 inches) of rain normally falls in Portsmouth during September with rain falling on 12 days of the month.
Portsmouth weather in October
The average maximum daytime temperature in Portsmouth in October is a comfortable 14°C (57°F), while the average minimum night-time temperature is a cool 9°C (48°F). You can expect on average 4 hours of sunshine a day in Portsmouth during October.
- 14°C max day temperature14
- 4 hours of sunshine per day4
- 15 days with some rainfall15
- 9°C min night temperature9
- 93 mm of monthly rainfall93
On average 93 mm (3.7 inches) of rain normally falls in Portsmouth during October with rain falling on 15 days of the month.
Portsmouth weather in November
The average maximum daytime temperature in Portsmouth in November is a cool 11°C (52°F), while the average minimum night-time temperature is a cold 6°C (43°F). You can expect on average 3 hours of sunshine a day in Portsmouth during November.
- 11°C max day temperature11
- 3 hours of sunshine per day3
- 15 days with some rainfall15
- 6°C min night temperature6
- 99 mm of monthly rainfall99
On average 99 mm (3.9 inches) of rain normally falls in Portsmouth during November with rain falling on 15 days of the month.
Portsmouth weather in December
The average maximum daytime temperature in Portsmouth in December is a cool 9°C (48°F), while the average minimum night-time temperature is a cold 4°C (39°F). You can expect on average 2 hours of sunshine a day in Portsmouth during December.
- 9°C max day temperature9
- 2 hours of sunshine per day2
- 16 days with some rainfall16
- 4°C min night temperature4
- 98 mm of monthly rainfall98
On average 98 mm (3.9 inches) of rain normally falls in Portsmouth during December with rain falling on 16 days of the month.