December weather forecastIsthmia, Greece
December weather for Isthmia, Greece: December, the first month of the winter in Isthmia, is still a cool month, with an average temperature fluctuating between 12.4°C (54.3°F) and 5.9°C (42.6°F). In Isthmia, Greece, in December, it is raining for 11.5 days, with typically 46mm (1.81") of accumulated precipitation.
December
Weather in December
December, the first month of the winter in Isthmia, is still a cool month, with an average temperature fluctuating between 12.4°C (54.3°F) and 5.9°C (42.6°F).Temperature
The shift from November to December coincides with a small decrease in the average high-temperature, down to a cool 12.4°C (54.3°F) from a refreshing 17°C (62.6°F). Throughout December in Isthmia, Greece, a steady low-temperature average of 5.9°C (42.6°F) is noted.Humidity
In Isthmia, the average relative humidity in December is 77%.Rainfall
In Isthmia, Greece, in December, it is raining for 11.5 days, with typically 46mm (1.81") of accumulated precipitation. Throughout the year, there are 121.1 rainfall days, and 396mm (15.59") of precipitation is accumulated.Snowfall
Months with snowfall are January through March and December. December is the month with the most snowfall. Snow falls for 0.4 days and accumulates 15mm (0.59") of snow.Sea temperature
In Isthmia, in December, the average water temperature is 17.2°C (63°F).Note: Swimming in 17.2°C (63°F) is not pleasurable for most people. Breathing control grows increasingly challenging as the water temperature falls under 21°C (69.8°F).
Daylight
The month with the shortest days in Isthmia is December, with an average of 9h and 36min of daylight.On the first day of December in Isthmia, sunrise is at 07:25 and sunset at 17:09. On the last day of the month, sunrise is at 07:43 and sunset at 17:18 EET.
Sunshine
The average sunshine in December is 6.2h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 3 during December leads to these advisories:
Exercise prevention - Warding off sunburn is urged. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Isthmia, Greece
- Average high temperature in December: 12.4°C
The warmest month (with the highest average high temperature) is July (30.7°C).
The month with the lowest average high temperature is January (10.6°C).
- Average low temperature in December: 5.9°C
The month with the highest average low temperature is August (20.4°C).
The coldest month (with the lowest average low temperature) is January (4.1°C).
Average pressure in December
Isthmia, Greece
- Average pressure in December: 1018.3mbar
The month with the highest atmospheric pressure is December (1018.3mbar).
The month with the lowest atmospheric pressure is July (1011.6mbar).
Average wind speed in December
Isthmia, Greece
- Average wind speed in December: 8.2km/h
The windiest month (with the highest average wind speed) is August (9.5km/h).
The calmest month (with the lowest average wind speed) is November (7.6km/h).
Average humidity in December
Isthmia, Greece
- Average humidity in December: 77%
The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is August (50%).
Average rainfall in December
Isthmia, Greece
- Average rainfall in December: 46mm
The wettest month (with the highest rainfall) is March (53mm).
The driest month (with the least rainfall) is August (9mm).
Average rainfall days in December
Isthmia, Greece
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is February (13.3 days).
The month with the least rainy days is August (5 days).
Average snowfall in December
Isthmia, Greece
- Average snowfall in December: 15mm
The month with the highest snowfall is December (15mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Isthmia, Greece
- Average snowfall days in December: 0.4 days
The month with the highest number of snowfall days is January (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average sea temperature in December
Isthmia, Greece
- Average sea temperature in December: 17.2°C
The best month for swimming (with the highest average sea temperature) is August (26.3°C).
The coldest month (with the lowest average sea temperature) is February (15.3°C).
Average daylight in December /
Average sunshine in December
Isthmia, Greece
- Average daylight in December: 9h and 36min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 6h and 12min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 54min).
Average sunshine days in December
Isthmia, Greece
- Average sunshine days in December: 17.1 days
The month with the most sunshine days is July (24.7 days).
The month with the least sunshine days is February (13.8 days).
Average UV index in December
Isthmia, Greece
- Average UV index in December: 3
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in December
Isthmia, Greece
- Average cloud cover in December: 33
The month with the most cloud cover is January (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 9).
Average visibility in December
Isthmia, Greece
- Average visibility in December: 9km
The months with the highest visibility are March, April, May, June, July, August, September, October and November (10km).
The months with the lowest visibility are January, February and December (9km).
