Climate and monthly weather forecastPortchester, United Kingdom
Climate and monthly weather forecast
Weather in January
January, like December, is a frosty winter month in Portchester, United Kingdom, with an average temperature fluctuating between 7.8°C (46°F) and 4.2°C (39.6°F). January and February, when the average high-temperature reaches 7.8°C (46°F), are the coldest months. Weather in January »Weather in February
February, the last month of the winter in Portchester, is another chilly month, with an average temperature fluctuating between 7.8°C (46°F) and 4.1°C (39.4°F). In Portchester, the months of January and February are known for the lowest temperatures, reaching an average high of 7.8°C (46°F). Weather in February »Weather in March
March, the first month of the spring in Portchester, is still a chilly month, with an average temperature fluctuating between 4.9°C (40.8°F) and 9.7°C (49.5°F). The introduction of March sees an average high-temperature of a still frosty 9.7°C (49.5°F), hardly deviating from February. Weather in March »Weather in April
April is a cool spring month in Portchester, United Kingdom, with an average temperature fluctuating between 12.6°C (54.7°F) and 6.4°C (43.5°F). Portchester's weather, upon April's arrival, documents an average high-temperature of a fresh 12.6°C (54.7°F), nearly identical to the prior month. Weather in April »Weather in May
May, the last month of the spring in Portchester, is a moderate month, with an average temperature varying between 8.8°C (47.8°F) and 14.8°C (58.6°F). Portchester's shift into May is marked by a subtle change to a refreshing 14.8°C (58.6°F) from April's 12.6°C (54.7°F) in temperature. Weather in May »Weather in June
The first month of the summer, June, is an enjoyable month in Portchester, United Kingdom, with an average temperature ranging between max 17.7°C (63.9°F) and min 11.4°C (52.5°F). The onset of June manifests an average high-temperature of a comfortable 17.7°C (63.9°F), demonstrating a minor variation from the preceding month. Weather in June »Weather in July
July, like June, in Portchester, United Kingdom, is another enjoyable summer month, with an average temperature fluctuating between 19.8°C (67.6°F) and 13.8°C (56.8°F). July and August are characterised by peak temperatures, with an average high of 19.8°C (67.6°F). Weather in July »Weather in August
August, the last month of the summer in Portchester, is another comfortable month, with temperature in the range of an average low of 14.1°C (57.4°F) and an average high of 19.8°C (67.6°F). Portchester's highest average temperatures are recorded in July and August, reaching a high of 19.8°C (67.6°F). Weather in August »Weather in September
September, the first month of the autumn in Portchester, is still a comfortable month, with an average temperature fluctuating between 17.9°C (64.2°F) and 12.5°C (54.5°F). The initiation of September records an average high-temperature of a still comfortable 17.9°C (64.2°F), displaying a near consistency with the previous month. Weather in September »Weather in October
October, like September, is another mild autumn month in Portchester, United Kingdom, with temperature in the range of an average low of 10.8°C (51.4°F) and an average high of 14.9°C (58.8°F). October brings an average high-temperature of a moderate 14.9°C (58.8°F), nearly identical to the preceding month. Weather in October »Weather in November
The last month of the autumn, November, is also a fresh month in Portchester, United Kingdom, with an average temperature fluctuating between 7.8°C (46°F) and 11.1°C (52°F). November signifies a minor drop in average high-temperature, transitioning from a refreshing 14.9°C (58.8°F) in October to a fresh 11.1°C (52°F). Weather in November »Weather in December
The first month of the winter, December, is still a chilly month in Portchester, United Kingdom, with an average temperature ranging between max 9.1°C (48.4°F) and min 5.4°C (41.7°F). With the onset of December, the average high-temperature stands at a frosty 9.1°C (48.4°F), closely aligned with November's 11.1°C (52°F). Weather in December »Updated: Feb 7, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Portchester's temperatures tend to hit their minimum during January and February, with an average high-temperature of 7.8°C (46°F).
The months with the highest humidity in Portchester are January and December, with an average relative humidity of 85%.
In Portchester, during the entire year, the rain falls for 147.3 days and collects up to 243mm (9.57") of precipitation.
January, February, November and December are months with snowfall in Portchester, United Kingdom.
Throughout the year, there are 5.3 snowfall days, and 16mm (0.63") of snow is accumulated.
January, February and November, with an average maximum UV index of 2, are months with the lowest UV index.
February has the least sunshine of the year, with an average of 4.1h of sunshine.
In Portchester, United Kingdom, snow does not fall in March through October.
The months with the lowest humidity in Portchester, United Kingdom, are April, May, July through September, with an average relative humidity of 80%.
The months with the least rainfall in Portchester are April and May Rain falls for 9.4 days and accumulates 11mm (0.43") of rain.
June has the longest days of the year, with an average of 16h and 24min of daylight.
July and August are characterised by peak temperatures, with an average high of 19.8°C (67.6°F).
With an average of 9.2h of sunshine, July has the most sunshine of the year in Portchester, United Kingdom.
The month with the highest UV index in Portchester, United Kingdom, is July, with an average maximum UV index of 5.
On Sunday, 27. October 2024, at 2:00 am, Daylight Saving Time ends in Portchester, and the time zone changes from BST to GMT. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 1:00 am, and the time zone reverts from GMT to BST.
The month with the most rainfall is November, when the rain falls for 16.6 days and typically aggregates up to 33mm (1.3") of precipitation.
The month with the most snowfall is November, when snow falls for 0.3 days and typically aggregates up to 6mm (0.24") of snow.
December has the shortest days of the year, with an average of 8h and 0min of daylight.
Average temperature
Portchester, United Kingdom
The warmest months (with the highest average high temperature) are July and August (19.8°C).
The months with the lowest average high temperature are January and February (7.8°C).
The month with the highest average low temperature is August (14.1°C).
The coldest month (with the lowest average low temperature) is February (4.1°C).
Average pressure
Portchester, United Kingdom
- Average pressure in January:
1015mbar - Average pressure in February:
1014.3mbar - Average pressure in March:
1015.7mbar - Average pressure in April:
1015.6mbar - Average pressure in May:
1017mbar - Average pressure in June:
1016.4mbar
- Average pressure in July:
1015.8mbar - Average pressure in August:
1015.3mbar - Average pressure in September:
1017.2mbar - Average pressure in October:
1015.3mbar - Average pressure in November:
1010.7mbar - Average pressure in December:
1015.1mbar
The month with the highest atmospheric pressure is September (1017.2mbar).
The month with the lowest atmospheric pressure is November (1010.7mbar).
Average wind speed
Portchester, United Kingdom
- Average wind speed in January:
21.8km/h - Average wind speed in February:
22.3km/h - Average wind speed in March:
20km/h - Average wind speed in April:
16.5km/h - Average wind speed in May:
16.2km/h - Average wind speed in June:
16.1km/h
- Average wind speed in July:
15.8km/h - Average wind speed in August:
16.5km/h - Average wind speed in September:
17.5km/h - Average wind speed in October:
19.8km/h - Average wind speed in November:
22km/h - Average wind speed in December:
22.8km/h
The windiest month (with the highest average wind speed) is December (22.8km/h).
The calmest month (with the lowest average wind speed) is July (15.8km/h).
Average humidity
Portchester, United Kingdom
The months with the highest relative humidity are January and December (85%).
The months with the lowest relative humidity are April, May, July, August and September (80%).
Average rainfall
Portchester, United Kingdom
The wettest month (with the highest rainfall) is November (33mm).
The driest months (with the least rainfall) are April and May (11mm).
Average rainfall days
Portchester, United Kingdom
- Average rainfall days in January:
13.3 days - Average rainfall days in February:
12.6 days - Average rainfall days in March:
11.3 days - Average rainfall days in April:
9.4 days - Average rainfall days in May:
9.9 days - Average rainfall days in June:
10.9 days
- Average rainfall days in July:
13 days - Average rainfall days in August:
12.4 days - Average rainfall days in September:
10.2 days - Average rainfall days in October:
14.2 days - Average rainfall days in November:
16.6 days - Average rainfall days in December:
13.5 days
The month with the highest number of rainy days is November (16.6 days).
The month with the least rainy days is April (9.4 days).
Average snowfall
Portchester, United Kingdom
The month with the highest snowfall is November (6mm).
The months with the least snowfall are March, April, May, June, July, August, September and October (0mm).
Average snowfall days
Portchester, United Kingdom
- Average snowfall days in January:
1.7 days - Average snowfall days in February:
1.7 days - Average snowfall days in March:
0.4 days - Average snowfall days in April:
0.1 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.3 days - Average snowfall days in December:
1.1 days
The months with the highest number of snowfall days are January and February (1.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Portchester, United Kingdom
- Average daylight in January:
8h and 30min - Average daylight in February:
10h and 6min - Average daylight in March:
11h and 54min - Average daylight in April:
13h and 54min - Average daylight in May:
15h and 30min - Average daylight in June:
16h and 24min
- Average daylight in July:
16h and 0min - Average daylight in August:
14h and 30min - Average daylight in September:
12h and 36min - Average daylight in October:
10h and 42min - Average daylight in November:
9h and 0min - Average daylight in December:
8h and 0min
The month with the longest days is June (Average daylight: 16h and 24min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in January:
4h and 12min - Average sunshine in February:
4h and 6min - Average sunshine in March:
6h and 6min - Average sunshine in April:
8h and 36min - Average sunshine in May:
8h and 36min - Average sunshine in June:
8h and 42min
- Average sunshine in July:
9h and 12min - Average sunshine in August:
8h and 48min - Average sunshine in September:
8h and 12min - Average sunshine in October:
4h and 48min - Average sunshine in November:
4h and 12min - Average sunshine in December:
4h and 24min
The month with the most sunshine is July (Average sunshine: 9h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).
Average sunshine days
Portchester, United Kingdom
- Average sunshine days in January:
12.5 days - Average sunshine days in February:
12.3 days - Average sunshine days in March:
16.3 days - Average sunshine days in April:
17.7 days - Average sunshine days in May:
17.3 days - Average sunshine days in June:
16.5 days
- Average sunshine days in July:
15.5 days - Average sunshine days in August:
15 days - Average sunshine days in September:
15.8 days - Average sunshine days in October:
12.7 days - Average sunshine days in November:
9.2 days - Average sunshine days in December:
11.6 days
The month with the most sunshine days is April (17.7 days).
The month with the least sunshine days is November (9.2 days).
Average UV index
Portchester, United Kingdom
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February and November (UV index 2).
Average cloud cover
Portchester, United Kingdom
The month with the most cloud cover is November (Cloud cover 58).
The months with the least cloud cover are July and September (Cloud cover 41).
Average visibility
Portchester, United Kingdom
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).
