December weather forecastOia, Greece

December

Weather in December

December, the first month of the winter in Oia, is still a refreshing month, with an average temperature varying between 14.6°C (58.3°F) and 16.4°C (61.5°F).

Temperature

December's weather records an average high-temperature of a still comfortable 16.4°C (61.5°F), showing little deviation from November. Oia's December nights demonstrate minimal variation from the daytime temperatures, with an average of 14.6°C (58.3°F).

Humidity

The months with the lowest humidity in Oia, Greece, are January and December, with an average relative humidity of 70%.

Rainfall

In Oia, in December, during 13.7 rainfall days, 33mm (1.3") of precipitation is typically accumulated. In Oia, during the entire year, the rain falls for 87.8 days and collects up to 221mm (8.7") of precipitation.

Sea temperature

In Oia, in December, the average water temperature is 17°C (62.6°F).
Note: Swimming is not a pleasurable activity for the majority in water at 17°C (62.6°F). Breathing control gets harder 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 in Oia, Greece, with an average of 9h and 42min of daylight.
On the first day of December in Oia, Greece, sunrise is at 07:12 and sunset at 17:03. On the last day of the month, sunrise is at 07:30 and sunset at 17:13 EET.

Sunshine

The average sunshine in December in Oia is 6h.

UV index

December is the month with the lowest UV index, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In December, the maximum UV index of 3 transforms into these recommendations:
Undertake precautions - Guarding against sun damage is counselled. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.

Frequently asked questions

In December, in Oia, the average high-temperature is 16.4°C (61.5°F), and the average low-temperature is 14.6°C (58.3°F).

January and December, with an average relative humidity of 70%, are the least humid months in Oia, Greece.

In Oia, Greece, the average relative humidity in December is 70%.

In Oia, in December, it is raining for 13.7 days, with typically 33mm (1.3") of accumulated precipitation.

In Oia, Greece, in December, the average water temperature is 17°C (62.6°F). For swimming, a surface water temperature of 17°C (62.6°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 in Oia, Greece, with an average of 9h and 42min of daylight.

The average day length in December in Oia, Greece, is 9h and 43min.

On the first day of December in Oia, Greece, sunrise is at 07:12 and sunset at 17:03. On the last day of the month, sunrise is at 07:30 and sunset at 17:13 EET.

In December, the average sunshine duration in Oia is 6h.

With an average maximum UV index of 3, December is the month with the lowest UV index in Oia.

In Oia, the average daily maximum UV index in December is 3. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to UV radiation.
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 sea temperature
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Oia, Greece

  • Average high temperature in December: 16.4°C

The warmest month (with the highest average high temperature) is August (25.9°C).
The month with the lowest average high temperature is January (14.7°C).

  • Average low temperature in December: 14.6°C

The month with the highest average low temperature is August (24.9°C).
The coldest month (with the lowest average low temperature) is January (12.9°C).

Average pressure in December
Oia, Greece

  • Average pressure in December: 1017.7mbar

The month with the highest atmospheric pressure is December (1017.7mbar).
The month with the lowest atmospheric pressure is July (1009mbar).

Average wind speed in December
Oia, Greece

  • Average wind speed in December: 27.2km/h

The windiest month (with the highest average wind speed) is January (29.2km/h).
The calmest month (with the lowest average wind speed) is May (19.8km/h).

Average humidity in December
Oia, Greece

  • Average humidity in December: 70%

The month with the highest relative humidity is August (77%).
The months with the lowest relative humidity are January and December (70%).

Average rainfall in December
Oia, Greece

  • Average rainfall in December: 33mm

The wettest month (with the highest rainfall) is February (38mm).
The driest months (with the least rainfall) are July and August (2mm).

Average rainfall days in December
Oia, Greece

  • Average rainfall days in December: 13.7 days

The month with the highest number of rainy days is January (14.2 days).
The month with the least rainy days is August (0.4 days).

Average sea temperature in December
Oia, Greece

  • Average sea temperature in December: 17°C

The best month for swimming (with the highest average sea temperature) is August (24°C).
The coldest months (with the lowest average sea temperature) are February and March (15°C).

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

  • Average daylight in December: 9h and 42min

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 42min).

  • Average sunshine in December: 6h and 0min

The months with the most sunshine are July and August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 48min).

Average sunshine days in December
Oia, Greece

  • Average sunshine days in December: 13.9 days

The month with the most sunshine days is August (29.6 days).
The month with the least sunshine days is January (13.3 days).

Average UV index in December
Oia, Greece

  • Average UV index in December: 3

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 3).

Average cloud cover in December
Oia, Greece

  • Average cloud cover in December: 38

The month with the most cloud cover is January (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 2).

Average visibility in December
Oia, 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).