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December Weather in Keles, Turkey

Last updated: August 27, 2025

In Keles, Turkey, the average temperature in December hovers around 4°C (40°F). During this time, temperatures can dip as low as -13°C (9°F) and rise to a maximum of 18°C (65°F). Expect around 115 mm (4.5 in) of precipitation spread over 16 days, contributing to a notably high average humidity of 89%.

December Temperature in Keles

In December in Keles, the average temperature is 4°C (40°F), with maximums reaching up to 18°C (65°F) and minimums dropping as low as -13°C (9°F). Be prepared for a wide range of temperatures during your travels, so pack accordingly!

December Weather in Keles: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Keles, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Keles, December typically has an average temperature of 4°C (40°F), with highs reaching up to 18°C (65°F) and lows dropping to around -13°C (9°F).
JanFebMarAprMayJunJulAugSepOctNovDec333841505964697064554639
Data source: Temperature data for Keles generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Keles

In Keles in December, the precipitation amount is 115 mm (4.5 in) over a span of 16 days.

December Precipitation Trends in Keles

The chart displays monthly precipitation patterns in Keles, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Keles, December typically receives around 115 mm (4.5 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec10888125981321514824416868115
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Keles

In Keles in December humidity is 89%. With an average temperature of 4°C (40°F), this humidity feels like a chilling blanket enveloping you, making travel uncomfortable and damp, as the cold penetrates through your clothes and the air feels heavy and clinging.

December Average Humidity in Keles

This chart illustrates the average monthly humidity levels in Keles, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Keles is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%86%75%72%63%47%35%45%69%85%89%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Keles

In Keles in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Keles, you can visit Hourly UV Index in Keles.

Maximum UV Index Levels in Keles for December

The chart shows the monthly maximum UV Index (UVI) for Keles in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In December, the maximum UV index in Keles typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357891010108642
Data source: Keles December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How December Weather in Keles Compares to Other Months

Weather in Keles varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Keles, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Keles, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (33°F)108 mm (4.3 inches)88%moderate
February Weather3°C (38°F)88 mm (3.4 inches)88%moderate
March Weather5°C (42°F)125 mm (4.9 inches)86%high
April Weather10°C (50°F)98 mm (3.8 inches)75%very high
May Weather15°C (59°F)132 mm (5.2 inches)72%very high
June Weather18°C (64°F)151 mm (5.9 inches)63%very high
July Weather21°C (69°F)48 mm (1.9 inches)47%very high
August Weather21°C (71°F)24 mm (0.9 inches)35%very high
September Weather18°C (64°F)41 mm (1.6 inches)45%very high
October Weather13°C (55°F)68 mm (2.7 inches)69%high
November Weather8°C (47°F)68 mm (2.7 inches)85%moderate
December Weather4°C (40°F)115 mm (4.5 inches)89%low

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