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 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
The shift into December finds Galissas at an average high-temperature of a moderate 15.5°C (59.9°F), closely comparable to November's conditions. Galissas's average temperature during the nights of December is recorded at a still refreshing 13.5°C (56.3°F).Humidity
January and December, with an average relative humidity of 71%, are the least humid months.Rainfall
In Galissas, Greece, in December, during 13.9 rainfall days, 41mm (1.61") of precipitation is typically accumulated. Throughout the year, there are 93 rainfall days, and 255mm (10.04") of precipitation is accumulated.Sea temperature
In Galissas, the average seawater temperature in December is 16.7°C (62.1°F).Note: For most people, a water temperature of 16.7°C (62.1°F) is not conducive to enjoyable swimming. Breathing control becomes harder as the water temperature dips below 21°C (69.8°F).
Daylight
December has the shortest days of the year, with an average of 9h and 36min of daylight.On the first day of December, sunrise is at 07:16 and sunset at 17:02. On the last day of the month, sunrise is at 07:34 and sunset at 17:12 EET.
Sunshine
In December, the average sunshine is 6h.UV index
The month with the lowest UV index in Galissas is December, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: A maximum high daily UV index of 3 during December translates into the following directions:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Frequently asked questions
What is the average December temperature in Galissas?
What is the least humid month in Galissas?
What is the average humidity in December in Galissas?
How much does it rain in Galissas in December?
How cold is the water in December in Galissas?
What is the month with the shortest days in Galissas?
How many hours of daylight does Galissas have in December?
When are sunrise and sunset in December in Galissas?
How long on average sun shines in December in Galissas?
When is the lowest UV index in Galissas?
What is the UV index intensity in December in Galissas?
Average temperature in December
Galissas, Greece
- Average high temperature in December: 15.5°C
The warmest month (with the highest average high temperature) is August (26.1°C).
The month with the lowest average high temperature is January (13.8°C).
- Average low temperature in December: 13.5°C
The month with the highest average low temperature is August (24.4°C).
The coldest month (with the lowest average low temperature) is January (11.9°C).
Average pressure in December
Galissas, Greece
- Average pressure in December: 1017.8mbar
The month with the highest atmospheric pressure is December (1017.8mbar).
The month with the lowest atmospheric pressure is July (1009.2mbar).
Average wind speed in December
Galissas, Greece
- Average wind speed in December: 28.9km/h
The windiest month (with the highest average wind speed) is January (30km/h).
The calmest month (with the lowest average wind speed) is May (18.8km/h).
Average humidity in December
Galissas, Greece
- Average humidity in December: 71%
The month with the highest relative humidity is August (76%).
The months with the lowest relative humidity are January and December (71%).
Average rainfall in December
Galissas, Greece
- Average rainfall in December: 41mm
The wettest month (with the highest rainfall) is January (53mm).
The driest months (with the least rainfall) are July and August (1mm).
Average rainfall days in December
Galissas, Greece
- Average rainfall days in December: 13.9 days
The month with the highest number of rainy days is January (14.9 days).
The month with the least rainy days is August (0.8 days).
Average sea temperature in December
Galissas, Greece
- Average sea temperature in December: 16.7°C
The best month for swimming (with the highest average sea temperature) is August (25.8°C).
The coldest month (with the lowest average sea temperature) is February (15.6°C).
Average daylight in December /
Average sunshine in December
Galissas, Greece
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 6h and 0min
The months with the most sunshine are June, July and August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 42min).
Average sunshine days in December
Galissas, Greece
- Average sunshine days in December: 13.7 days
The month with the most sunshine days is July (30.1 days).
The month with the least sunshine days is January (12.4 days).
Average UV index in December
Galissas, Greece
- Average UV index in December: 3
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in December
Galissas, Greece
- Average cloud cover in December: 38
The month with the most cloud cover is January (Cloud cover 41).
The months with the least cloud cover are July and August (Cloud cover 3).
Average visibility in December
Galissas, Greece
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Galissas, Greece
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