Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average sea temperature in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
December brings a marginal elevation to an icy 5.5°C (41.9°F) from November's 7.5°C (45.5°F) in Greenock's average high-temperatures. During December, Greenock perceives a slight decrease in temperature from daytime highs, settling at an average low of 2.3°C (36.1°F).Humidity
The months with the highest humidity are January, August through December, with an average relative humidity of 89%.Rainfall
The month with the most rainfall in Greenock is December, when the rain falls for 22.5 days and typically aggregates up to 116mm (4.57") of precipitation.Snowfall
January through April, November and December are months with snowfall in Greenock, United Kingdom. In Greenock, during December, snow falls for 1.8 days and regularly aggregates up to 12mm (0.47") of snow. Throughout the year, there are 10.8 snowfall days, and 115mm (4.53") of snow is accumulated.Sea temperature
In Greenock, the average seawater temperature in December is 10°C (50°F).Note: Dipping into 10°C (50°F) below 10°C (50°F) is possible with the right protection; absent that, anticipate cold shock and hampered breathing. Swimming momentarily at 13°C (55.4°F) can be jarring.
Daylight
With an average of 7h and 6min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 8:26 am and sunset at 3:50 pm. On the last day of the month, sunrise is at 8:49 am and sunset at 3:54 pm GMT.
Sunshine
The average sunshine in December in Greenock, United Kingdom, is 3.1h.UV index
The average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the average person.Note: The UV index of 2 in December translates into these instructions:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Frequently asked questions
Is December cold in Greenock?
What is the most humid month in Greenock?
What is the average humidity in December in Greenock?
What is the rainiest month in Greenock?
How much does it rain in Greenock in December?
How many days does it snow in December in Greenock?
What is the sea water temperature in December in Greenock?
What is the month with the shortest days in Greenock?
What is the average length of the day in December in Greenock?
When is the sunrise / sunset in December in Greenock?
How long on average sun shines in December in Greenock?
How high is the UV index in December in Greenock?
Average temperature in December
Greenock, United Kingdom
- Average high temperature in December: 5.5°C
The warmest month (with the highest average high temperature) is July (16.3°C).
The month with the lowest average high temperature is January (5°C).
- Average low temperature in December: 2.3°C
The month with the highest average low temperature is July (9.8°C).
The coldest month (with the lowest average low temperature) is February (1.4°C).
Average pressure in December
Greenock, United Kingdom
- Average pressure in December: 1007.7mbar
The month with the highest atmospheric pressure is May (1015.2mbar).
The month with the lowest atmospheric pressure is November (1006.6mbar).
Average wind speed in December
Greenock, United Kingdom
- Average wind speed in December: 18.8km/h
The windiest month (with the highest average wind speed) is January (19.3km/h).
The calmest months (with the lowest average wind speed) are June and July (11.9km/h).
Average humidity in December
Greenock, United Kingdom
- Average humidity in December: 89%
The months with the highest relative humidity are January, August, September, October, November and December (89%).
The months with the lowest relative humidity are April and May (83%).
Average rainfall in December
Greenock, United Kingdom
- Average rainfall in December: 116mm
The wettest month (with the highest rainfall) is December (116mm).
The driest month (with the least rainfall) is April (48mm).
Average rainfall days in December
Greenock, United Kingdom
- Average rainfall days in December: 22.5 days
The month with the highest number of rainy days is August (24 days).
The month with the least rainy days is February (17.8 days).
Average snowfall in December
Greenock, United Kingdom
- Average snowfall in December: 12mm
The month with the highest snowfall is February (53mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Greenock, United Kingdom
- Average snowfall days in December: 1.8 days
The month with the highest number of snowfall days is February (3.6 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average sea temperature in December
Greenock, United Kingdom
- Average sea temperature in December: 10°C
The best month for swimming (with the highest average sea temperature) is August (14.3°C).
The coldest month (with the lowest average sea temperature) is March (7.4°C).
Average daylight in December /
Average sunshine in December
Greenock, United Kingdom
- Average daylight in December: 7h and 1min
The month with the longest days is June (Average daylight: 17h and 30min).
The month with the shortest days is December (Average daylight: 7h and 6min).
- Average sunshine in December: 3h and 1min
The month with the most sunshine is June (Average sunshine: 6h and 36min).
The month with the least sunshine is February (Average sunshine: 3h and 0min).
Average sunshine days in December
Greenock, United Kingdom
- Average sunshine days in December: 6.9 days
The month with the most sunshine days is April (8.8 days).
The months with the least sunshine days are July and August (5.4 days).
Average UV index in December
Greenock, United Kingdom
- Average UV index in December: 2
The months with the highest UV index are May and June (UV index 4).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in December
Greenock, United Kingdom
- Average cloud cover in December: 69
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is April (Cloud cover 59).
Average visibility in December
Greenock, United Kingdom
- Average visibility in December: 8km
The months with the highest visibility are January, February, March, April, May and November (9km).
The months with the lowest visibility are June, July, August, September, October and December (8km).
Greenock, United Kingdom
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