December weather forecast
Gullane, United Kingdom

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Weather in December

December, the first month of the winter in Gullane, is also a frosty month, with an average temperature ranging between min 4°C (39.2°F) and max 6.9°C (44.4°F).

Temperature

The shift into December records an average high-temperature of a still chilly 6.9°C (44.4°F), subtly varied from November's 8.7°C (47.7°F). Gullane maintains an average low-temperature of 4°C (39.2°F) throughout December's nights.

Humidity

In Gullane, the average relative humidity in December is 83%.

Rainfall

In December, in Gullane, the rain falls for 11.1 days. Throughout December, 19mm (0.75") of precipitation is accumulated. In Gullane, during the entire year, the rain falls for 149.7 days and collects up to 321mm (12.64") of precipitation.

Snowfall

Months with snowfall in Gullane are January through April, November and December. In December, it is snowing for 1.5 days. Throughout December, 11mm (0.43") of snow is accumulated. In Gullane, during the entire year, snow falls for 10.6 days and aggregates up to 75mm (2.95") of snow.

Sea temperature

In Gullane, the average seawater temperature in December is 9.2°C (48.6°F).
Note: In 9.2°C (48.6°F), cold shock and rapid breathing can occur when swimming at temperatures below 10°C (50°F).

Daylight

December has the shortest days of the year, with an average of 7h and 6min of daylight.
On the first day of the month, sunrise is at 8:19 am and sunset at 3:41 pm. On the last day of December, in Gullane, sunrise is at 8:42 am and sunset at 3:46 pm GMT.

Sunshine

The average sunshine in December is 5.1h.

UV index

The months with the lowest UV index 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 minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The UV index of 2 during December leads to these advisories:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
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Frequently asked questions

How cold is it in Gullane in December?

In December, in Gullane, the average high-temperature is 6.9°C (44.4°F), and the average low-temperature is 4°C (39.2°F).

What is the average humidity in December in Gullane?

In Gullane, the average relative humidity in December is 83%.

How many days does it rain in December in Gullane?

In December, in Gullane, the rain falls for 11.1 days. Throughout December, 19mm (0.75") of precipitation is accumulated.

How much does it snow in Gullane in December?

In Gullane, during December, snow falls for 1.5 days and regularly aggregates up to 11mm (0.43") of snow.

How cold is the water in December in Gullane?

In December, the average sea temperature in Gullane, United Kingdom, is 9.2°C (48.6°F). Swimming in 9.2°C (48.6°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

What is the month with the shortest days in Gullane?

With an average of 7h and 6min of daylight, December has the shortest days of the year in Gullane.

What is the average length of the day in December in Gullane?

In December, the average day length in Gullane is 7h and 4min.

When is the sunrise / sunset in December in Gullane?

On the first day of December in Gullane, United Kingdom, sunrise is at 8:19 am and sunset at 3:41 pm. On the last day of the month, sunrise is at 8:42 am and sunset at 3:46 pm GMT.

How long on average sun shines in December in Gullane?

In Gullane, the average sunshine duration in December is 5.1h.

What is the month with the lowest UV index in Gullane?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Gullane.

How high is the UV index in December in Gullane?

In December, the average daily maximum UV index in Gullane, United Kingdom, is 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in December
Gullane, United Kingdom

Average temperature in December - Gullane, United Kingdom
  • Average high temperature in December: 6.9°C

The warmest month (with the highest average high temperature) is August (16.2°C).
The month with the lowest average high temperature is January (6°C).

  • Average low temperature in December: 4°C

The month with the highest average low temperature is August (11.9°C).
The coldest month (with the lowest average low temperature) is January (3.4°C).

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Average pressure in December
Gullane, United Kingdom

Average pressure in December - Gullane, United Kingdom
  • Average pressure in December: 1008mbar

The month with the highest atmospheric pressure is May (1015.5mbar).
The month with the lowest atmospheric pressure is November (1007mbar).

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Average wind speed in December
Gullane, United Kingdom

Average wind speed in December - Gullane, United Kingdom
  • Average wind speed in December: 26.8km/h

The windiest months (with the highest average wind speed) are January and December (26.8km/h).
The calmest month (with the lowest average wind speed) is June (15.7km/h).

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Average humidity in December
Gullane, United Kingdom

Average humidity in December - Gullane, United Kingdom
  • Average humidity in December: 83%

The months with the highest relative humidity are June and July (85%).
The months with the lowest relative humidity are March and April (81%).

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Average rainfall in December
Gullane, United Kingdom

Average rainfall in December - Gullane, United Kingdom
  • Average rainfall in December: 19mm

The wettest month (with the highest rainfall) is July (42mm).
The driest month (with the least rainfall) is April (15mm).

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Average rainfall days in December
Gullane, United Kingdom

Average rainfall days in December - Gullane, United Kingdom
  • Average rainfall days in December: 11.1 days

The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is February (8.9 days).

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Average snowfall in December
Gullane, United Kingdom

Average snowfall in December - Gullane, United Kingdom
  • Average snowfall in December: 11mm

The month with the highest snowfall is February (28mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).

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Average snowfall days in December
Gullane, United Kingdom

Average snowfall days in December - Gullane, United Kingdom
  • Average snowfall days in December: 1.5 days

The month with the highest number of snowfall days is January (3.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average sea temperature in December
Gullane, United Kingdom

Average sea temperature in December - Gullane, United Kingdom
  • Average sea temperature in December: 9.2°C

The best month for swimming (with the highest average sea temperature) is August (14.2°C).
The coldest months (with the lowest average sea temperature) are February and March (6.5°C).

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Average daylight in December /
Average sunshine in December
Gullane, United Kingdom

Average daylight in December / Average sunshine in December - Gullane, 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: 5h and 1min

The month with the most sunshine is June (Average sunshine: 8h and 6min).
The month with the least sunshine is October (Average sunshine: 4h and 24min).

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Average sunshine days in December
Gullane, United Kingdom

Average sunshine days in December - Gullane, United Kingdom
  • Average sunshine days in December: 17.5 days

The month with the most sunshine days is December (17.5 days).
The month with the least sunshine days is June (11.4 days).

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Average UV index in December
Gullane, United Kingdom

Average UV index in December - Gullane, United Kingdom
  • Average UV index in December: 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).

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Average cloud cover in December
Gullane, United Kingdom

Average cloud cover in December - Gullane, United Kingdom
  • Average cloud cover in December: 50

The months with the most cloud cover are March, June and November (Cloud cover 54).
The month with the least cloud cover is April (Cloud cover 48).

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Average visibility in December
Gullane, United Kingdom

Average visibility in December - Gullane, United Kingdom
  • Average visibility in December: 10km

The months with the highest visibility are January, February, March, April, August, September, October, November and December (10km).
The months with the lowest visibility are May, June and July (9km).

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Gullane, United Kingdom

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