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
Weather in January
Temperature
January is Portishead's coldest month, registering average high temperatures of 7.2°C (45°F) and lows of 2.8°C (37°F).Humidity
The average relative humidity in January in Portishead is 87%.Rainfall
In January, the rain falls for 14.1 days. Throughout January, 31mm (1.22") of precipitation is accumulated. In Portishead, during the entire year, the rain falls for 176.1 days and collects up to 410mm (16.14") of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Portishead, during January, snow falls for 2.4 days and regularly aggregates up to 17mm (0.67") of snow. Throughout the year, in Portishead, there are 7 snowfall days, and 45mm (1.77") of snow is accumulated.Daylight
In Portishead, United Kingdom, the average length of the day in January is 8h and 27min.On the first day of the month, sunrise is at 8:16 am and sunset at 4:12 pm. On the last day of January, sunrise is at 7:51 am and sunset at 4:57 pm GMT.
Sunshine
In January, the average sunshine in Portishead is 4.1h.UV index
The months with the lowest UV index in Portishead are January through March, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: In January, the maximum UV index of 2 suggests this advice:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month in Portishead?
What is the temperature in January in Portishead?
What is the average humidity in January in Portishead?
How much does it rain in Portishead in January?
How much does it snow in Portishead in January?
What is the average length of the day in January in Portishead?
When is the sunrise / sunset in January in Portishead?
How long on average sun shines in January in Portishead?
What is the month with the lowest UV index in Portishead?
What is the UV index reading in January in Portishead?
Average temperature in January
Portishead, United Kingdom
- Average high temperature in January: 7.2°C
The warmest month (with the highest average high temperature) is July (19.7°C).
The month with the lowest average high temperature is January (7.2°C).
- Average low temperature in January: 2.8°C
The month with the highest average low temperature is August (12.7°C).
The coldest month (with the lowest average low temperature) is January (2.8°C).
Average pressure in January
Portishead, United Kingdom
- Average pressure in January: 1014.2mbar
The months with the highest atmospheric pressure are May and September (1016.8mbar).
The month with the lowest atmospheric pressure is November (1010.1mbar).
Average wind speed in January
Portishead, United Kingdom
- Average wind speed in January: 18.6km/h
The windiest month (with the highest average wind speed) is February (19.5km/h).
The calmest month (with the lowest average wind speed) is July (13.6km/h).
Average humidity in January
Portishead, United Kingdom
- Average humidity in January: 87%
The months with the highest relative humidity are November and December (88%).
The months with the lowest relative humidity are April, May and July (82%).
Average rainfall in January
Portishead, United Kingdom
- Average rainfall in January: 31mm
The wettest month (with the highest rainfall) is December (45mm).
The driest months (with the least rainfall) are April and September (24mm).
Average rainfall days in January
Portishead, United Kingdom
- Average rainfall days in January: 14.1 days
The month with the highest number of rainy days is August (17.5 days).
The month with the least rainy days is February (12.3 days).
Average snowfall in January
Portishead, United Kingdom
- Average snowfall in January: 17mm
The month with the highest snowfall is February (18mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in January
Portishead, United Kingdom
- Average snowfall days in January: 2.4 days
The month with the highest number of snowfall days is January (2.4 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
Portishead, United Kingdom
- Average daylight in January: 8h and 3min
The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 54min).
- Average sunshine in January: 4h and 1min
The month with the most sunshine is July (Average sunshine: 8h and 12min).
The month with the least sunshine is November (Average sunshine: 3h and 54min).
Average sunshine days in January
Portishead, United Kingdom
- Average sunshine days in January: 13.1 days
The month with the most sunshine days is March (14.5 days).
The month with the least sunshine days is August (9.3 days).
Average UV index in January
Portishead, United Kingdom
- Average UV index in January: 2
The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in January
Portishead, United Kingdom
- Average cloud cover in January: 58
The month with the most cloud cover is November (Cloud cover 61).
The months with the least cloud cover are April and May (Cloud cover 48).
Average visibility in January
Portishead, United Kingdom
- Average visibility in January: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
Portishead, United Kingdom
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