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
The shift into January reveals an average high-temperature of a still frosty 7.8°C (46°F), closely mirroring December's climate. Graffham registers a steady nighttime temperature averaging a wintry 4.5°C (40.1°F) throughout January.Humidity
January and December, with an average relative humidity of 84%, are the most humid months.Rainfall
In Graffham, United Kingdom, in January, it is raining for 17.6 days, with typically 46mm (1.81") of accumulated precipitation. Throughout the year, there are 183.3 rainfall days, and 504mm (19.84") of precipitation is accumulated.Snowfall
January, February, November and December are months with snowfall in Graffham, United Kingdom. January is the month with the most snowfall in Graffham, United Kingdom. Snow falls for 1.8 days and accumulates 7mm (0.28") of snow.Daylight
The average length of the day in January in Graffham is 8h and 31min.On the first day of the month, sunrise is at 8:05 am and sunset at 4:06 pm. On the last day of January, sunrise is at 7:41 am and sunset at 4:51 pm GMT.
Sunshine
In Graffham, the average sunshine in January is 4.3h.UV index
January and February, with an average maximum UV index of 2, are months with the lowest UV index in Graffham. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the average person.Note: A maximum high daily UV index of 2 during January translates into the following directions:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. During bright days, sunglasses that offer UVA and UVB defense are recommended. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are January temperatures in Graffham?
What are the most humid months in Graffham?
What is the average humidity in January in Graffham?
How much does it rain in Graffham in January?
What is the snowiest month in Graffham?
How many days does it snow in January in Graffham?
What is the average length of the day in January in Graffham?
When is the sunrise / sunset in January in Graffham?
How long on average sun shines in January in Graffham?
What are the months with the lowest UV index in Graffham?
What is the UV index reading in January in Graffham?
Average temperature in January
Graffham, United Kingdom
- Average high temperature in January: 7.8°C
The warmest month (with the highest average high temperature) is August (19.5°C).
The month with the lowest average high temperature is February (7.7°C).
- Average low temperature in January: 4.5°C
The month with the highest average low temperature is August (14.6°C).
The coldest month (with the lowest average low temperature) is February (4.3°C).
Average pressure in January
Graffham, United Kingdom
- Average pressure in January: 1015.2mbar
The month with the highest atmospheric pressure is September (1017.3mbar).
The month with the lowest atmospheric pressure is November (1010.9mbar).
Average wind speed in January
Graffham, United Kingdom
- Average wind speed in January: 23.5km/h
The windiest month (with the highest average wind speed) is December (24.8km/h).
The calmest month (with the lowest average wind speed) is July (16.9km/h).
Average humidity in January
Graffham, United Kingdom
- Average humidity in January: 84%
The months with the highest relative humidity are January and December (84%).
The month with the lowest relative humidity is September (79%).
Average rainfall in January
Graffham, United Kingdom
- Average rainfall in January: 46mm
The wettest month (with the highest rainfall) is December (64mm).
The driest month (with the least rainfall) is April (24mm).
Average rainfall days in January
Graffham, United Kingdom
- Average rainfall days in January: 17.6 days
The month with the highest number of rainy days is November (18.8 days).
The month with the least rainy days is September (12.6 days).
Average snowfall in January
Graffham, United Kingdom
- Average snowfall in January: 7mm
The month with the highest snowfall is January (7mm).
The months with the least snowfall are March, April, May, June, July, August, September and October (0mm).
Average snowfall days in January
Graffham, United Kingdom
- Average snowfall days in January: 1.8 days
The months with the highest number of snowfall days are January and February (1.8 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
Graffham, United Kingdom
- Average daylight in January: 8h and 3min
The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in January: 4h and 2min
The month with the most sunshine is July (Average sunshine: 9h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).
Average sunshine days in January
Graffham, United Kingdom
- Average sunshine days in January: 9.6 days
The month with the most sunshine days is March (14.3 days).
The month with the least sunshine days is November (8.3 days).
Average UV index in January
Graffham, United Kingdom
- Average UV index in January: 2
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January and February (UV index 2).
Average cloud cover in January
Graffham, United Kingdom
- Average cloud cover in January: 56
The month with the most cloud cover is November (Cloud cover 58).
The month with the least cloud cover is July (Cloud cover 39).
Average visibility in January
Graffham, United Kingdom
- Average visibility in January: 9km
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).
