Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average sea temperature in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
December
Weather in December
Temperature
The commencement of December includes a gentle temperature shift, with the average high-temperature dropping a bit from an enjoyable 18.3°C (64.9°F) in November to a moderate 14.4°C (57.9°F). December nights reveal a minor deviation from daytime highs, with a mean low-temperature of 10.4°C (50.7°F).Humidity
The average relative humidity in December is 70%.Rainfall
December is the month with the most rainfall in Spetses. Rain falls for 10.5 days and accumulates 36mm (1.42") of precipitation.Snowfall
January, February and December are months with snowfall in Spetses. December is the first month it typically snows. Throughout December, in the average 0.1 snowfall days, it receives 1mm (0.04") of snow. Throughout the year, in Spetses, there are 0.8 snowfall days, and 7mm (0.28") of snow is accumulated.Sea temperature
In Spetses, the average seawater temperature in December is 17.3°C (63.1°F).Note: Swimming in water that is 17.3°C (63.1°F) is not enjoyable for most. Breathing becomes more challenging to manage 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 Spetses, with an average of 9h and 42min of daylight.On the first day of the month, sunrise is at 07:22 and sunset at 17:10. On the last day of December, in Spetses, sunrise is at 07:41 and sunset at 17:19 EET.
Sunshine
The average sunshine in December in Spetses is 6.2h.UV index
The months with the lowest UV index in Spetses are January and December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: The daily high UV index of 3 in December translates into this advice:
Guard yourself - Avoiding sunburn is suggested. It's recommended to limit sun exposure when its radiation is at its peak during midday. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures in Spetses?
What is the average humidity in December in Spetses?
What is the wettest month in Spetses?
How many days does it rain in December in Spetses?
When does it start to snow in Spetses?
How cold is the water in December in Spetses?
What is the month with the shortest days in Spetses?
How many hours of daylight does Spetses have in December?
When are sunrise and sunset in December in Spetses?
How long on average sun shines in December in Spetses?
What are the months with the lowest UV index in Spetses?
What is the UV index reading in December in Spetses?
Average temperature in December
Spetses, Greece
- Average high temperature in December: 14.4°C
The warmest month (with the highest average high temperature) is August (29.7°C).
The month with the lowest average high temperature is January (12.6°C).
- Average low temperature in December: 10.4°C
The month with the highest average low temperature is August (24.2°C).
The coldest month (with the lowest average low temperature) is January (8.6°C).
Average pressure in December
Spetses, Greece
- Average pressure in December: 1018.2mbar
The month with the highest atmospheric pressure is December (1018.2mbar).
The month with the lowest atmospheric pressure is July (1011.3mbar).
Average wind speed in December
Spetses, Greece
- Average wind speed in December: 13.8km/h
The windiest month (with the highest average wind speed) is January (14.6km/h).
The calmest month (with the lowest average wind speed) is May (11.1km/h).
Average humidity in December
Spetses, Greece
- Average humidity in December: 70%
The months with the highest relative humidity are January and February (72%).
The month with the lowest relative humidity is August (56%).
Average rainfall in December
Spetses, Greece
- Average rainfall in December: 36mm
The wettest month (with the highest rainfall) is December (36mm).
The driest months (with the least rainfall) are July and August (6mm).
Average rainfall days in December
Spetses, Greece
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is January (10.8 days).
The month with the least rainy days is August (3.3 days).
Average snowfall in December
Spetses, Greece
- Average snowfall in December: 1mm
The month with the highest snowfall is January (5mm).
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Spetses, Greece
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average sea temperature in December
Spetses, Greece
- Average sea temperature in December: 17.3°C
The best month for swimming (with the highest average sea temperature) is August (26.5°C).
The coldest month (with the lowest average sea temperature) is February (15.3°C).
Average daylight in December /
Average sunshine in December
Spetses, Greece
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in December: 6h and 1min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 6h and 6min).
Average sunshine days in December
Spetses, Greece
- Average sunshine days in December: 18.1 days
The month with the most sunshine days is July (27 days).
The month with the least sunshine days is January (16.5 days).
Average UV index in December
Spetses, Greece
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in December
Spetses, Greece
- Average cloud cover in December: 32
The months with the most cloud cover are January and February (Cloud cover 35).
The month with the least cloud cover is August (Cloud cover 7).
Average visibility in December
Spetses, 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).
