December weather forecastIstiaia, Greece

December

Weather in December

December, the first month of the winter in Istiaia, is still a mild month, with an average temperature ranging between max 13.6°C (56.5°F) and min 11.1°C (52°F).

Temperature

Istiaia in December undergoes a slight reduction in the average high-temperature, shifting from November's enjoyable 17.1°C (62.8°F) to a moderate 13.6°C (56.5°F). Istiaia's nighttime temperature in December experiences a slight dip from daytime highs, falling to an average of 11.1°C (52°F).

Humidity

The average relative humidity in December in Istiaia is 69%.

Rainfall

In Istiaia, during December, the rain falls for 12.9 days and regularly aggregates up to 53mm (2.09") of precipitation. In Istiaia, during the entire year, the rain falls for 133.4 days and collects up to 511mm (20.12") of precipitation.

Snowfall

In Istiaia, snow does not fall in February through December.

Daylight

The month with the shortest days is December, with an average of 9h and 30min of daylight.
On the first day of December, sunrise is at 07:27 and sunset at 17:05. On the last day of the month, sunrise is at 07:45 and sunset at 17:15 EET.

Sunshine

The average sunshine in December is 5.3h.

UV index

The months with the lowest UV index in Istiaia, Greece, are January, February and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: An average UV index of 3 in December transforms into this advice:
Undertake precautions - It is suggested to shield oneself from sunburn. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.

Frequently asked questions

December temperatures in Istiaia, Greece, vary between a high-temperature of 13.6°C (56.5°F) and a low-temperature of 11.1°C (52°F). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, in August is estimated at 29°C (84.2°F).

The average relative humidity in December is 69%.

In Istiaia, Greece, in December, it is raining for 12.9 days, with typically 53mm (2.09") of accumulated precipitation.

In Istiaia, Greece, snow does not fall in February through December.

In Istiaia, Greece, in December, it doesn't snow. In January, it regularly snows.

The month with the shortest days in Istiaia is December, with an average of 9h and 30min of daylight.

In December, the average day length in Istiaia, Greece, is 9h and 29min.

On the first day of December in Istiaia, sunrise is at 07:27 and sunset at 17:05. On the last day of the month, sunrise is at 07:45 and sunset at 17:15 EET.

The average sunshine duration in December in Istiaia is 5.3h.

January, February and December, with an average maximum UV index of 3, are months with the lowest UV index in Istiaia, Greece.

In December, the average daily maximum UV index in Istiaia is 3. A UV Index of 3 to 5 symbolizes a medium hazard to health from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Istiaia, Greece

  • Average high temperature in December: 13.6°C

The warmest month (with the highest average high temperature) is August (27°C).
The month with the lowest average high temperature is January (11.8°C).

  • Average low temperature in December: 11.1°C

The month with the highest average low temperature is August (24.8°C).
The coldest month (with the lowest average low temperature) is January (9.3°C).

Average pressure in December
Istiaia, Greece

  • Average pressure in December: 1018.7mbar

The month with the highest atmospheric pressure is December (1018.7mbar).
The month with the lowest atmospheric pressure is July (1011.8mbar).

Average wind speed in December
Istiaia, Greece

  • Average wind speed in December: 20.1km/h

The windiest month (with the highest average wind speed) is February (20.7km/h).
The calmest months (with the lowest average wind speed) are June and July (13.1km/h).

Average humidity in December
Istiaia, Greece

  • Average humidity in December: 69%

The months with the highest relative humidity are January, February and November (71%).
The months with the lowest relative humidity are July, August and September (66%).

Average rainfall in December
Istiaia, Greece

  • Average rainfall in December: 53mm

The wettest month (with the highest rainfall) is February (62mm).
The driest month (with the least rainfall) is August (17mm).

Average rainfall days in December
Istiaia, Greece

  • Average rainfall days in December: 12.9 days

The month with the highest number of rainy days is January (14.3 days).
The month with the least rainy days is July (6.6 days).

Average snowfall in December
Istiaia, Greece

  • Average snowfall in December: 0mm

The month with the highest snowfall is January (2mm).
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0mm).

Average snowfall days in December
Istiaia, Greece

  • Average snowfall days in December: 0 days

The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).

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

  • Average daylight in December: 9h and 30min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in December: 5h and 18min

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

Average sunshine days in December
Istiaia, Greece

  • Average sunshine days in December: 15.9 days

The month with the most sunshine days is July (22.5 days).
The month with the least sunshine days is February (13.5 days).

Average UV index in December
Istiaia, Greece

  • Average UV index in December: 3

The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).

Average cloud cover in December
Istiaia, Greece

  • Average cloud cover in December: 42

The month with the most cloud cover is January (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 10).

Average visibility in December
Istiaia, 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).