December weather forecastKalathos, Greece

December

Weather in December

December, the first month of the winter in Kalathos, is still a refreshing month, with temperature in the range of an average high of 16.5°C (61.7°F) and an average low of 14.4°C (57.9°F).

Temperature

In December, the average high-temperature marginally decreases from a pleasant 20°C (68°F) in November to a comfortable 16.5°C (61.7°F). Kalathos, during the nights of December, averages a temperature close to its daytime high, at a moderate 14.4°C (57.9°F).

Humidity

In Kalathos, the average relative humidity in December is 67%.

Rainfall

The month with the most rainfall is December, when the rain falls for 8.9 days and typically aggregates up to 21mm (0.83") of precipitation.

Sea temperature

In Kalathos, the average seawater temperature in December is 18°C (64.4°F).
Note: The majority of individuals do not enjoy swimming in water that is 18°C (64.4°F). Breathing control becomes more challenging as the water temperature dips from 21°C (69.8°F) to 15°C (59°F).

Daylight

December has the shortest days of the year, with an average of 9h and 48min of daylight.
On the first day of December in Kalathos, sunrise is at 07:00 and sunset at 16:53. On the last day of the month, sunrise is at 07:18 and sunset at 17:03 EET.

Sunshine

In December, the average sunshine in Kalathos is 6.4h.

UV index

The months with the lowest UV index are January, February and December, with an average maximum UV index of 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for average individuals.
Note: In December, the maximum UV index of 4 transforms into these recommendations:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. The solar radiation around mid-day is intense; avoid the Sun and stay safe. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.

Updated: Feb 14, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In Kalathos, 16.5°C (61.7°F) is the average high-temperature and 14.4°C (57.9°F) is the average low-temperature during December. In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is appraised at 29°C (84.2°F).

In December, the average relative humidity is 67%.

The month with the most rainfall in Kalathos, Greece, is December, when the rain falls for 8.9 days and typically aggregates up to 21mm (0.83") of precipitation.

In Kalathos, Greece, in December, it is raining for 8.9 days, with typically 21mm (0.83") of accumulated precipitation.

In December, the average sea temperature is 18°C (64.4°F). Swimming in 18°C (64.4°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

December has the shortest days of the year in Kalathos, Greece, with an average of 9h and 48min of daylight.

In Kalathos, Greece, the average day length in December is 9h and 45min.

In December, on the first day of the month, sunrise is at 07:00 and sunset at 16:53. On the last day of the month, sunrise is at 07:18 and sunset at 17:03 EET.

In December, the average sunshine duration in Kalathos, Greece, is 6.4h.

The months with the lowest UV index in Kalathos, Greece, are January, February and December, with an average maximum UV index of 4.

In Kalathos, Greece, the average daily maximum UV index in December is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

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

Nov

December

Jan

Average high temperature

20°C

16.5°C

14.9°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

17.1km/h

22km/h

24.1km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

8.9

8.3

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

21.9

18.5

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Kalathos, Greece

Average high temperature in December: 16.5°C

The warmest month (with the highest average high temperature) is August (29.4°C).
The month with the lowest average high temperature is January (14.9°C).

Average low temperature in December: 14.4°C

The month with the highest average low temperature is August (25.8°C).
The coldest month (with the lowest average low temperature) is January (12.6°C).

Average pressure in December
Kalathos, Greece

Average pressure in December: 1017.3mbar

The month with the highest atmospheric pressure is December (1017.3mbar).
The month with the lowest atmospheric pressure is July (1007mbar).

Average wind speed in December
Kalathos, Greece

Average wind speed in December: 20.3km/h

The windiest month (with the highest average wind speed) is February (22.6km/h).
The calmest month (with the lowest average wind speed) is May (15km/h).

Average humidity in December
Kalathos, Greece

Average humidity in December: 67%

The months with the highest relative humidity are May and June (70%).
The month with the lowest relative humidity is October (65%).

Average rainfall in December
Kalathos, Greece

Average rainfall in December: 21mm

The wettest month (with the highest rainfall) is December (21mm).
The driest month (with the least rainfall) is August (0mm).

Average rainfall days in December
Kalathos, Greece

Average rainfall days in December: 8.9 days

The month with the highest number of rainy days is December (8.9 days).
The month with the least rainy days is August (0.3 days).

Average sea temperature in December
Kalathos, Greece

Average sea temperature in December: 18°C

The best months for swimming (with the highest average sea temperature) are August and September (25°C).
The coldest months (with the lowest average sea temperature) are February and March (16°C).

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

Average daylight in December: 9h and 48min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).

Average sunshine in December: 6h and 24min

The month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is January (Average sunshine: 6h and 0min).

Average sunshine days in December
Kalathos, Greece

Average sunshine days in December: 18.5 days

The month with the most sunshine days is July (30.8 days).
The month with the least sunshine days is February (17.7 days).

Average UV index in December
Kalathos, Greece

Average UV index in December: 4

The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February and December (UV index 4).

Average cloud cover in December
Kalathos, Greece

Average cloud cover in December: 29

The month with the most cloud cover is January (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 2).

Average visibility in December
Kalathos, 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).