December weather forecastEretria, Greece

December

Weather in December

The first month of the winter, December, is still a refreshing month in Eretria, Greece, with an average temperature varying between 13.1°C (55.6°F) and 8.3°C (46.9°F).

Temperature

The beginning of December subtly marks a decrease in the average high-temperature, transitioning from a refreshing 17.2°C (63°F) in November to a mild 13.1°C (55.6°F). Throughout December nights, Eretria records a consistent low-temperature averaging a chilly 8.3°C (46.9°F).

Humidity

The average relative humidity in December is 75%.

Rainfall

The month with the most rainfall is December, when the rain falls for 13.9 days and typically aggregates up to 69mm (2.72") of precipitation.

Snowfall

January through March and December are months with snowfall. December is the first month it typically snows. Throughout December, in the average 0.5 snowfall days, it receives 4mm (0.16") of snow. Throughout the year, in Eretria, there are 3.3 snowfall days, and 86mm (3.39") of snow is accumulated.

Sea temperature

In Eretria, the average seawater temperature in December is 16.4°C (61.5°F).
Note: Swimming becomes less enjoyable for most at a surface water temperature of 16.4°C (61.5°F). As the temperature decreases below 21°C (69.8°F), breathing becomes increasingly difficult.

Daylight

With an average of 9h and 30min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 07:23 and sunset at 17:04. On the last day of the month, sunrise is at 07:41 and sunset at 17:14 EET.

Sunshine

In Eretria, the average sunshine in December is 5.2h.

UV index

With an average maximum UV index of 2, December is the month with the lowest UV index in Eretria. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the average person.
Note: A daily maximum UV index of 2 in December translates into the following instructions:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.

Updated: Jul 16, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

During December, Eretria experiences an average high-temperature of 13.1°C (55.6°F) and a low-temperature of 8.3°C (46.9°F). In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is estimated at 31°C (87.8°F).

In December, the average relative humidity is 75%.

December is the month with the most rainfall. Rain falls for 13.9 days and accumulates 69mm (2.72") of precipitation.

In December, in Eretria, the rain falls for 13.9 days. Throughout December, 69mm (2.72") of precipitation is accumulated.

December is the first month it typically snows. Throughout December, in the average 0.5 snowfall days, it receives 4mm (0.16") of snow.

In Eretria, in December, the average water temperature is 16.4°C (61.5°F). For swimming, a surface water temperature of 16.4°C (61.5°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

December has the shortest days of the year, with an average of 9h and 30min of daylight.

In Eretria, the average day length in December is 9h and 32min.

On the first day of December, sunrise is at 07:23 and sunset at 17:04. On the last day of the month, sunrise is at 07:41 and sunset at 17:14 EET.

In Eretria, the average sunshine duration in December is 5.2h.

The month with the lowest UV index is December, with an average maximum UV index of 2.

In Eretria, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a minimal hazard to health from exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

17.2°C

13.1°C

11.3°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

12.6km/h

14km/h

14.7km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

0.5

1.8

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

15.2

14.2

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Eretria, Greece

Average high temperature in December: 13.1°C

The warmest month (with the highest average high temperature) is July (29.3°C).
The month with the lowest average high temperature is January (11.3°C).

Average low temperature in December: 8.3°C

The month with the highest average low temperature is August (22.6°C).
The coldest month (with the lowest average low temperature) is January (6.3°C).

Average pressure in December
Eretria, Greece

Average pressure in December: 1018.4mbar

The month with the highest atmospheric pressure is December (1018.4mbar).
The month with the lowest atmospheric pressure is July (1011.3mbar).

Average wind speed in December
Eretria, Greece

Average wind speed in December: 13km/h

The windiest month (with the highest average wind speed) is August (14km/h).
The calmest months (with the lowest average wind speed) are May and June (10.7km/h).

Average humidity in December
Eretria, Greece

Average humidity in December: 75%

The month with the highest relative humidity is January (77%).
The month with the lowest relative humidity is July (56%).

Average rainfall in December
Eretria, Greece

Average rainfall in December: 69mm

The wettest month (with the highest rainfall) is December (69mm).
The driest month (with the least rainfall) is August (6mm).

Average rainfall days in December
Eretria, Greece

Average rainfall days in December: 13.9 days

The month with the highest number of rainy days is January (14.8 days).
The month with the least rainy days is August (2.9 days).

Average snowfall in December
Eretria, Greece

Average snowfall in December: 4mm

The month with the highest snowfall is January (73mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).

Average snowfall days in December
Eretria, Greece

Average snowfall days in December: 0.5 days

The month with the highest number of snowfall days is January (1.8 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
Eretria, Greece

Average sea temperature in December: 16.4°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 (14.9°C).

Average daylight in December /
Average sunshine in December
Eretria, Greece

Average daylight in December: 9h and 30min

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 30min).

Average sunshine in December: 5h and 12min

The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).

Average sunshine days in December
Eretria, Greece

Average sunshine days in December: 14.2 days

The month with the most sunshine days is August (25.3 days).
The month with the least sunshine days is February (11.5 days).

Average UV index in December
Eretria, Greece

Average UV index in December: 2

The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).

Average cloud cover in December
Eretria, Greece

Average cloud cover in December: 42

The month with the most cloud cover is January (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 8).

Average visibility in December
Eretria, Greece

Average visibility in December: 10km

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