December weather forecastGrimsby, United Kingdom
December
Weather in December
December, the first month of the winter in Grimsby, is still a chilly month, with an average temperature ranging between max 7.1°C (44.8°F) and min 3.8°C (38.8°F).Temperature
As Grimsby, United Kingdom, welcomes December, the average high-temperature is noted at a still chilly 7.1°C (44.8°F), closely aligning with the preceding month. A consistent average low-temperature of 3.8°C (38.8°F), with a minor variance from the daytime highs, is noted in Grimsby during the nights of December.Humidity
The most humid month in Grimsby, United Kingdom, is December, with an average relative humidity of 86%.Rainfall
In Grimsby, United Kingdom, during December, the rain falls for 12.5 days and regularly aggregates up to 32mm (1.26") of precipitation. Throughout the year, there are 153.7 rainfall days, and 377mm (14.84") of precipitation is accumulated.Snowfall
Months with snowfall are January through March, November and December. In Grimsby, in December, snow falls for 1.1 days, with typically accumulated 9mm (0.35") of snow. In Grimsby, United Kingdom, during the entire year, snow falls for 8.1 days and aggregates up to 47mm (1.85") of snow.Sea temperature
In Grimsby, the average seawater temperature in December is 8.7°C (47.7°F).Note: Swimming in 8.7°C (47.7°F) is deemed hazardous. Exposure to temperatures below 10°C (50°F) leads to immediate severe cold shock and hyperventilation.
Daylight
With an average of 7h and 36min of daylight, December has the shortest days of the year in Grimsby.On the first day of the month, sunrise is at 7:54 am and sunset at 3:44 pm. On the last day of December, sunrise is at 8:16 am and sunset at 3:50 pm GMT.
Sunshine
The average sunshine in December is 4.3h.UV index
The months with the lowest UV index in Grimsby are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum UV index, 2 during December, leads to the following recommendations:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Grimsby, United Kingdom
- Average high temperature in December: 7.1°C
The warmest month (with the highest average high temperature) is August (19.5°C).
The month with the lowest average high temperature is January (6.4°C).
- Average low temperature in December: 3.8°C
The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is January (2.9°C).
Average pressure in December
Grimsby, United Kingdom
- Average pressure in December: 1011.9mbar
The month with the highest atmospheric pressure is May (1016.3mbar).
The month with the lowest atmospheric pressure is November (1009.2mbar).
Average wind speed in December
Grimsby, United Kingdom
- Average wind speed in December: 23.4km/h
The windiest month (with the highest average wind speed) is December (23.4km/h).
The calmest month (with the lowest average wind speed) is July (15.3km/h).
Average humidity in December
Grimsby, United Kingdom
- Average humidity in December: 86%
The month with the highest relative humidity is December (86%).
The month with the lowest relative humidity is August (76%).
Average rainfall in December
Grimsby, United Kingdom
- Average rainfall in December: 32mm
The wettest month (with the highest rainfall) is October (45mm).
The driest month (with the least rainfall) is April (17mm).
Average rainfall days in December
Grimsby, United Kingdom
- Average rainfall days in December: 12.5 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is September (9.8 days).
Average snowfall in December
Grimsby, United Kingdom
- Average snowfall in December: 9mm
The month with the highest snowfall is January (16mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Grimsby, United Kingdom
- Average snowfall days in December: 1.1 days
The month with the highest number of snowfall days is February (2.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in December
Grimsby, United Kingdom
- Average sea temperature in December: 8.7°C
The best month for swimming (with the highest average sea temperature) is August (15.7°C).
The coldest months (with the lowest average sea temperature) are February and March (6.6°C).
Average daylight in December /
Average sunshine in December
Grimsby, United Kingdom
- Average daylight in December: 7h and 36min
The month with the longest days is June (Average daylight: 17h and 0min).
The month with the shortest days is December (Average daylight: 7h and 36min).
- Average sunshine in December: 4h and 18min
The month with the most sunshine is August (Average sunshine: 7h and 48min).
The months with the least sunshine are February and November (Average sunshine: 3h and 42min).
Average sunshine days in December
Grimsby, United Kingdom
- Average sunshine days in December: 16.1 days
The month with the most sunshine days is September (17.3 days).
The month with the least sunshine days is July (12.4 days).
Average UV index in December
Grimsby, United Kingdom
- Average UV index in December: 2
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Grimsby, United Kingdom
- Average cloud cover in December: 58
The month with the most cloud cover is February (Cloud cover 62).
The months with the least cloud cover are April, August and September (Cloud cover 49).
Average visibility in December
Grimsby, United Kingdom
- Average visibility in December: 9km
The months with the highest visibility are February, March, April, August, September and October (10km).
The months with the lowest visibility are January, May, June, July, November and December (9km).
