December weather forecastGalissas, Greece
December
Weather in December
December, the first month of the winter in Galissas, is still a refreshing month, with temperature in the range of an average low of 13.5°C (56.3°F) and an average high of 15.5°C (59.9°F).Temperature
December's beginning signals an average high-temperature of a still refreshing 15.5°C (59.9°F), barely different from November's 18.4°C (65.1°F). Galissas's temperature during December nights registers a minor decrease to an average low of 13.5°C (56.3°F).Humidity
The months with the lowest humidity are January and December, with an average relative humidity of 71%.Rainfall
In Galissas, in December, during 13.9 rainfall days, 41mm (1.61") of precipitation is typically accumulated. In Galissas, Greece, during the entire year, the rain falls for 93 days and collects up to 255mm (10.04") of precipitation.Sea temperature
In December, the average sea temperature is 16.7°C (62.1°F).Note: For most, swimming in 16.7°C (62.1°F) is not a pleasant experience. As the temperature falls from 21°C (69.8°F) to 15°C (59°F), controlling one's breathing becomes more difficult.
Daylight
December has the shortest days of the year, with an average of 9h and 36min of daylight.On the first day of the month, sunrise is at 07:16 and sunset at 17:02. On the last day of December, 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 is December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index of 3 during December leads to these instructions:
Exercise care. People with light skin might get burns in fewer than 30 minutes. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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 36min
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).
