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 arrival of December suggests a slight decrease in the average high-temperature, moving from a moderate 15.5°C (59.9°F) in November to a fresh 10.6°C (51.1°F). The temperature during December sees a subtle transition from day to night, averaging a low of 7.7°C (45.9°F).Humidity
In December, the average relative humidity in Şişli is 74%.Rainfall
The month with the most rainfall is December, when the rain falls for 15.4 days and typically aggregates up to 74mm (2.91") of precipitation.Snowfall
January through March and December are months with snowfall. December is the first month it typically snows. Throughout December, in the average 1.1 snowfall days, it receives 9mm (0.35") of snow. Throughout the year, there are 9 snowfall days, and 89mm (3.5") of snow is accumulated.Sea temperature
In Şişli, in December, the average water temperature is 10.7°C (51.3°F).Note: Swimming at temperatures less than 10°C (50°F) in 10.7°C (51.3°F) is feasible with the right swimsuit; if not, expect cold shock and breathlessness. A quick swim at 13°C (55.4°F) without adequate warmth can be discomforting.
Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 08:10 and sunset at 17:36. On the last day of December, sunrise is at 08:29 and sunset at 17:45 +03.
Sunshine
The month with the least sunshine is December, with an average of 4.7h of sunshine.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: In December, the maximum UV index of 2 suggests these recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December?
What is the average humidity in December?
What is the wettest month?
How much does it rain in December?
When does it start snowing in Şişli?
What is the water temperature in December?
What is the month with the shortest days in Şişli?
How many hours of daylight does Şişli have in December?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Şişli have in December?
When is the lowest UV index?
How high is the UV index in December?
Average temperature in December
Şişli, Turkey
- Average high temperature in December: 10.6°C
The warmest month (with the highest average high temperature) is August (27.3°C).
The month with the lowest average high temperature is January (8.3°C).
- Average low temperature in December: 7.7°C
The month with the highest average low temperature is August (23°C).
The coldest month (with the lowest average low temperature) is January (5.4°C).
Average pressure in December
Şişli, Turkey
- Average pressure in December: 1019.7mbar
The month with the highest atmospheric pressure is December (1019.7mbar).
The month with the lowest atmospheric pressure is July (1011.8mbar).
Average wind speed in December
Şişli, Turkey
- Average wind speed in December: 18.4km/h
The windiest month (with the highest average wind speed) is August (19.5km/h).
The calmest month (with the lowest average wind speed) is May (13.7km/h).
Average humidity in December
Şişli, Turkey
- Average humidity in December: 74%
The month with the highest relative humidity is February (78%).
The months with the lowest relative humidity are June, July, August and September (69%).
Average rainfall in December
Şişli, Turkey
- Average rainfall in December: 74mm
The wettest month (with the highest rainfall) is December (74mm).
The driest month (with the least rainfall) is August (14mm).
Average rainfall days in December
Şişli, Turkey
- Average rainfall days in December: 15.4 days
The month with the highest number of rainy days is December (15.4 days).
The month with the least rainy days is August (4.7 days).
Average snowfall in December
Şişli, Turkey
- Average snowfall in December: 9mm
The month with the highest snowfall is January (46mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Şişli, Turkey
- Average snowfall days in December: 1.1 days
The month with the highest number of snowfall days is January (4.3 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
Şişli, Turkey
- Average sea temperature in December: 10.7°C
The best month for swimming (with the highest average sea temperature) is August (24.9°C).
The coldest month (with the lowest average sea temperature) is February (7.8°C).
Average daylight in December /
Average sunshine in December
Şişli, Turkey
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).
Average sunshine days in December
Şişli, Turkey
- Average sunshine days in December: 13 days
The month with the most sunshine days is August (23.7 days).
The month with the least sunshine days is February (11.3 days).
Average UV index in December
Şişli, Turkey
- Average UV index in December: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in December
Şişli, Turkey
- Average cloud cover in December: 51
The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are July and August (Cloud cover 12).
Average visibility in December
Şişli, Turkey
- Average visibility in December: 10km
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January and February (9km).
