December weather forecastHersonissos, Greece

Clear blue sea waters to the horizon in Hersonissos, in Greece

December

Weather in December

December, the first month of the winter in Hersonissos, is also an enjoyable month, with an average temperature varying between 12.7°C (54.9°F) and 16.1°C (61°F).

Temperature

With the arrival of December, Hersonissos notices a mild change in the average high-temperature, sliding from November's 19.3°C (66.7°F) to a still refreshing 16.1°C (61°F). December nights in Hersonissos reflect a consistent temperature dip to a fresh 12.7°C (54.9°F), a slight descent from daytime peaks.

Humidity

The months with the highest humidity are January, February and December, with an average relative humidity of 72%.

Rainfall

December is the month with the most rainfall. Rain falls for 15.8 days and accumulates 65mm (2.56") of precipitation.

Sea temperature

In Hersonissos, in December, the average water temperature is 18°C (64.4°F).
Note: For most people, a water temperature of 18°C (64.4°F) is not conducive to enjoyable swimming. Breathing control becomes harder as the water temperature dips below 21°C (69.8°F).

Daylight

The month with the shortest days is December, with an average of 9h and 48min of daylight.
On the first day of December in Hersonissos, sunrise is at 07:09 and sunset at 17:06. On the last day of the month, sunrise is at 07:27 and sunset at 17:16 EET.

Sunshine

The average sunshine in December is 6.3h.

UV index

January through March and December, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: In December, the maximum UV index of 4 translates into these guidelines:
Prioritize safety - Recommendations to avert sunburn are shared. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.

Updated: Jun 12, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature, in December, in Hersonissos, is 16.1°C (61°F), while the low-temperature averages to 12.7°C (54.9°F). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in August is estimated at 29°C (84.2°F).

The months with the highest humidity are January, February and December, with an average relative humidity of 72%.

In Hersonissos, the average relative humidity in December is 72%.

December is the month with the most rainfall. Rain falls for 15.8 days and accumulates 65mm (2.56") of precipitation.

In Hersonissos, in December, it is raining for 15.8 days, with typically 65mm (2.56") of accumulated precipitation.

In Hersonissos, the average seawater temperature in December is 18°C (64.4°F). For swimming, a surface water temperature of 18°C (64.4°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 48min of daylight.

The average day length in December is 9h and 49min.

In December, on the first day of the month, sunrise is at 07:09 and sunset at 17:06. On the last day of the month, sunrise is at 07:27 and sunset at 17:16 EET.

In December, the average sunshine duration is 6.3h.

January through March and December, with an average maximum UV index of 4, are months with the lowest UV index.

In December, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium hazard to health from exposure to the Sun's 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

19.3°C

16.1°C

14.1°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

15.6km/h

18.8km/h

20.6km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

9.5

15.8

15.4

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

17.5

12.6

12.4

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Hersonissos, Greece

Average high temperature in December: 16.1°C

The warmest month (with the highest average high temperature) is August (27.4°C).
The month with the lowest average high temperature is January (14.1°C).

Average low temperature in December: 12.7°C

The month with the highest average low temperature is August (23.4°C).
The coldest month (with the lowest average low temperature) is January (11.1°C).

Average pressure in December
Hersonissos, Greece

Average pressure in December: 1017.9mbar

The month with the highest atmospheric pressure is December (1017.9mbar).
The month with the lowest atmospheric pressure is July (1009.4mbar).

Average wind speed in December
Hersonissos, Greece

Average wind speed in December: 17.6km/h

The windiest month (with the highest average wind speed) is January (19.4km/h).
The calmest month (with the lowest average wind speed) is May (13km/h).

Average humidity in December
Hersonissos, Greece

Average humidity in December: 72%

The months with the highest relative humidity are January, February and December (72%).
The month with the lowest relative humidity is July (67%).

Average rainfall in December
Hersonissos, Greece

Average rainfall in December: 65mm

The wettest month (with the highest rainfall) is December (65mm).
The driest month (with the least rainfall) is August (1mm).

Average rainfall days in December
Hersonissos, Greece

Average rainfall days in December: 15.8 days

The month with the highest number of rainy days is December (15.8 days).
The month with the least rainy days is August (0.6 days).

Average sea temperature in December
Hersonissos, Greece

Average sea temperature in December: 18°C

The best month for swimming (with the highest average sea temperature) is August (25°C).
The coldest months (with the lowest average sea temperature) are February and March (15°C).

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

Average daylight in December: 9h and 48min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

Average sunshine in December: 6h and 18min

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

Average sunshine days in December
Hersonissos, Greece

Average sunshine days in December: 12.6 days

The month with the most sunshine days is August (29.3 days).
The month with the least sunshine days is January (12.4 days).

Average UV index in December
Hersonissos, Greece

Average UV index in December: 4

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

Average cloud cover in December
Hersonissos, Greece

Average cloud cover in December: 32

The month with the most cloud cover is January (Cloud cover 33).
The month with the least cloud cover is August (Cloud cover 2).

Average visibility in December
Hersonissos, 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).