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's arrival comes with a mild decrease in the average high-temperature, moving subtly from an enjoyable 18°C (64.4°F) in November to a mild 13.9°C (57°F). In December, Keratsini's nighttime temperatures demonstrate a slight decrease, stabilizing at an average of 9.2°C (48.6°F).Humidity
In Keratsini, the average relative humidity in December is 72%.Rainfall
The month with the most rainfall is December, when the rain falls for 9.2 days and typically aggregates up to 39mm (1.54") of precipitation.Snowfall
Months with snowfall are January through March and December. The months with the most snowfall are January, February and December, with an average 4mm (0.16") of accumulated snow.Sea temperature
In Keratsini, in December, the average water temperature is 16.6°C (61.9°F).Note: For most, swimming in 16.6°C (61.9°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).
Daylight
With an average of 9h and 36min of daylight, December has the shortest days of the year in Keratsini, Greece.On the first day of December, sunrise is at 07:22 and sunset at 17:06. On the last day of the month, sunrise is at 07:41 and sunset at 17:16 EET.
Sunshine
In Keratsini, Greece, the average sunshine in December is 5.9h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: A typical high UV index of 2 in December suggests the following recommendations:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Frequently asked questions
What is the usual temperature for Keratsini in December?
What is the average humidity in December in Keratsini?
What is the wettest month in Keratsini?
How much does it rain in Keratsini in December?
What is the snowiest month in Keratsini?
When does it start to snow in Keratsini?
What is the sea temperature in December in Keratsini?
What is the month with the shortest days in Keratsini?
How many hours of daylight does Keratsini have in December?
When is the sunrise / sunset in December in Keratsini?
How long on average sun shines in December in Keratsini?
What is the month with the lowest UV index in Keratsini?
What is the UV index reading in December in Keratsini?
Average temperature in December
Keratsini, Greece
- Average high temperature in December: 13.9°C
The warmest month (with the highest average high temperature) is July (31.1°C).
The month with the lowest average high temperature is January (11.9°C).
- Average low temperature in December: 9.2°C
The month with the highest average low temperature is August (24.1°C).
The coldest month (with the lowest average low temperature) is January (7.2°C).
Average pressure in December
Keratsini, Greece
- Average pressure in December: 1018.2mbar
The month with the highest atmospheric pressure is December (1018.2mbar).
The month with the lowest atmospheric pressure is July (1011.1mbar).
Average wind speed in December
Keratsini, Greece
- Average wind speed in December: 13.9km/h
The windiest month (with the highest average wind speed) is August (15.7km/h).
The calmest month (with the lowest average wind speed) is May (11.4km/h).
Average humidity in December
Keratsini, Greece
- Average humidity in December: 72%
The month with the highest relative humidity is January (73%).
The months with the lowest relative humidity are July and August (50%).
Average rainfall in December
Keratsini, Greece
- Average rainfall in December: 39mm
The wettest month (with the highest rainfall) is December (39mm).
The driest month (with the least rainfall) is August (4mm).
Average rainfall days in December
Keratsini, Greece
- Average rainfall days in December: 9.2 days
The month with the highest number of rainy days is March (9.9 days).
The month with the least rainy days is August (2 days).
Average snowfall in December
Keratsini, Greece
- Average snowfall in December: 4mm
The months with the highest snowfall are January, February and December (4mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Keratsini, Greece
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is January (0.9 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average sea temperature in December
Keratsini, Greece
- Average sea temperature in December: 16.6°C
The best month for swimming (with the highest average sea temperature) is August (26.3°C).
The coldest month (with the lowest average sea temperature) is February (15°C).
Average daylight in December /
Average sunshine in December
Keratsini, Greece
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 5h and 5min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 42min).
Average sunshine days in December
Keratsini, Greece
- Average sunshine days in December: 19.7 days
The month with the most sunshine days is August (27.5 days).
The month with the least sunshine days is February (16.3 days).
Average UV index in December
Keratsini, Greece
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in December
Keratsini, Greece
- Average cloud cover in December: 35
The month with the most cloud cover is January (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 7).
Average visibility in December
Keratsini, 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).
Keratsini, Greece
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