Heraklion
Greece
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Heraklion, Greece

The Venetian walls and the Castle of Koule in the shipyards at Heraklion, Greece
The Venetian walls and the Castle of Koule in the shipyards at Heraklion, Greece
The first month of the winter, December, is still a comfortable month in Heraklion, Greece, with average temperature fluctuating between 17°C (62.6°F) and 12°C (53.6°F).

Temperature

In December, the average high-temperature marginally drops, from a pleasant 20.1°C (68.2°F) in November, to a comfortable 17°C (62.6°F). In December, in Heraklion, Greece, the average low-temperature is 12°C (53.6°F).

Rainfall

In Heraklion, it is raining for 8.9 days, with typically 77.1mm (3.04") of accumulated precipitation. In Heraklion, Greece, during the entire year, the rain falls for 53.2 days and collects up to 500.6mm (19.71") of precipitation.

Sea temperature

In Heraklion, the average seawater temperature is 18.4°C (65.1°F).
Note: Swimming in 18.4°C (65.1°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

Daylight

December has the shortest days of the year, with an average of 9.8h of daylight.

Sunshine

The average sunshine in Heraklion is 3.9h.

UV index

With an average maximum UV index of 2, December is the month with the lowest UV index in Heraklion. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to the UV radiation for ordinary individuals.
Note: In December, the average maximum UV index of 2 translate into the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in December in Heraklion?

In Heraklion, Greece, in December, the average high-temperature is 17°C (62.6°F), and the average low-temperature is 12°C (53.6°F).

How much does it rain in Heraklion in December?

In Heraklion, in December, it is raining for 8.9 days, with typically 77.1mm (3.04") of accumulated precipitation.

What is the sea water temperature in December in Heraklion?

In Heraklion, in December, the average water temperature is 18.4°C (65.1°F). For swimming, a surface water temperature of 18.4°C (65.1°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).

What is the month with the shortest days in Heraklion?

With an average of 9.8h of daylight, December has the shortest days of the year in Heraklion.

What is the average length of the day in December in Heraklion?

In December, the average length of the day in Heraklion, Greece, is 9.8h.

How long on average sun shines in December in Heraklion?

In Heraklion, Greece, the average sunshine in December is 3.9h.

When is the lowest UV index in Heraklion?

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

What is the UV index reading in December in Heraklion?

In Heraklion, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from the exposure to the Sun's UV rays.
Average temperature in December - Heraklion, Greece
  • Average high temperature in December: 17°C

The warmest month (with the highest average high temperature) is July (28.6°C).
The month with the lowest average high temperature is January (15.2°C).

  • Average low temperature in December: 12°C

Months with the highest average low temperature are July and August (22.7°C).
Coldest months (with the lowest average low temperature) are January and February (10°C).

Average rainfall in December - Heraklion, Greece
  • Average rainfall in December: 77.1mm

The wettest month (with the highest rainfall) is January (91.5mm).
The driest month (with the lowest rainfall) is August (0.7mm).

Average rainfall days in December - Heraklion, Greece
  • Average rainfall days in December: 8.9 days

The month with the highest number of rainy days is January (10.1 days).
Months with the lowest number of rainy days are July and August (0.1 days).

Average sea temperature in December - Heraklion, Greece
  • Average sea temperature in December: 18.4°C

The best month for swimming (with the highest average sea temperature) is August (26.1°C).
The coldest month (with the lowest average sea temperature) is February (16.4°C).

Average daylight in December / Average sunshine in December - Heraklion, Greece
  • Average daylight in December: 9.8h

The month with the longest days is June (Average daylight: 14.5h).
The month with shortest days is December (Average daylight: 9.8h).

  • Average sunshine in December: 3.9h

The month with most sunshine is July (Average sunshine: 12h).
The month with least sunshine is January (Average sunshine: 3.8h).

Average UV index in December - Heraklion, Greece
  • Average UV index in December: 2

The month with the highest UV index is July (UV index 11).
The month with the lowest UV index is December (UV index 2).