Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
January
Weather in January
Temperature
January's presence marks an average high-temperature of a still chilly 8.6°C (47.5°F), subtly varied from December's 9.9°C (49.8°F). Portesham registers a subtle dip to an average of 6.3°C (43.3°F) during the nights of January.Humidity
The average relative humidity in January is 82%.Rainfall
In January, the rain falls for 16.3 days. Throughout January, 44mm (1.73") of precipitation is accumulated. Throughout the year, there are 167.3 rainfall days, and 471mm (18.54") of precipitation is accumulated.Snowfall
Months with snowfall in Portesham are January, February and November. January is the first month it typically snows. Throughout January, in the average 0.4 snowfall days, it receives 1mm (0.04") of snow. In Portesham, during the entire year, snow falls for 2.7 days and aggregates up to 4mm (0.16") of snow.Daylight
In Portesham, the average length of the day in January is 8h and 34min.On the first day of January, sunrise is at 8:11 am and sunset at 4:15 pm. On the last day of the month, sunrise is at 7:47 am and sunset at 4:59 pm GMT.
Sunshine
January, February and November, with an average of 4.1h of sunshine, are months with the least sunshine.UV index
January and February, with an average maximum UV index of 2, are months with the lowest UV index in Portesham. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: A maximum daily UV index of 2 during January morphs into the following directions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average January temperature in Portesham?
What is the average humidity in January in Portesham?
How many days does it rain in January in Portesham?
When does it start to snow in Portesham?
How many hours of daylight does Portesham have in January?
What time are sunrise and sunset in January in Portesham?
What are the months with the least sunshine in Portesham?
How many hours of sunshine does Portesham have in January?
What are the months with the lowest UV index in Portesham?
What is the UV index intensity in January in Portesham?
Average temperature in January
Portesham, United Kingdom
- Average high temperature in January: 8.6°C
The warmest month (with the highest average high temperature) is August (18.2°C).
The month with the lowest average high temperature is February (8.3°C).
- Average low temperature in January: 6.3°C
The month with the highest average low temperature is August (15.3°C).
The coldest month (with the lowest average low temperature) is February (5.8°C).
Average pressure in January
Portesham, United Kingdom
- Average pressure in January: 1015mbar
The month with the highest atmospheric pressure is September (1017.3mbar).
The month with the lowest atmospheric pressure is November (1010.6mbar).
Average wind speed in January
Portesham, United Kingdom
- Average wind speed in January: 28.5km/h
The windiest month (with the highest average wind speed) is December (30.1km/h).
The calmest month (with the lowest average wind speed) is July (19.5km/h).
Average humidity in January
Portesham, United Kingdom
- Average humidity in January: 82%
The months with the highest relative humidity are June and July (83%).
The months with the lowest relative humidity are February, March, April, September, October, November and December (81%).
Average rainfall in January
Portesham, United Kingdom
- Average rainfall in January: 44mm
The wettest month (with the highest rainfall) is November (58mm).
The driest month (with the least rainfall) is May (27mm).
Average rainfall days in January
Portesham, United Kingdom
- Average rainfall days in January: 16.3 days
The month with the highest number of rainy days is November (17 days).
The month with the least rainy days is September (11.1 days).
Average snowfall in January
Portesham, United Kingdom
- Average snowfall in January: 1mm
The month with the highest snowfall is February (2mm).
The months with the least snowfall are March, April, May, June, July, August, September, October and December (0mm).
Average snowfall days in January
Portesham, United Kingdom
- Average snowfall days in January: 0.4 days
The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Portesham, United Kingdom
- Average daylight in January: 8h and 4min
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 6min).
- Average sunshine in January: 4h and 1min
The month with the most sunshine is July (Average sunshine: 9h and 24min).
The months with the least sunshine are January, February and November (Average sunshine: 4h and 6min).
Average sunshine days in January
Portesham, United Kingdom
- Average sunshine days in January: 11.3 days
The month with the most sunshine days is September (15.6 days).
The month with the least sunshine days is November (10.1 days).
Average UV index in January
Portesham, United Kingdom
- Average UV index in January: 2
The months with the highest UV index are July and August (UV index 5).
The months with the lowest UV index are January and February (UV index 2).
Average cloud cover in January
Portesham, United Kingdom
- Average cloud cover in January: 58
The month with the most cloud cover is December (Cloud cover 59).
The month with the least cloud cover is July (Cloud cover 40).
Average visibility in January
Portesham, United Kingdom
- Average visibility in January: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
