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December Weather in Thermo, Greece

Last updated: August 23, 2025

In December, the average temperature in Thermo, Greece hovers around 9°C (48°F). Expect chilly days, with minimums dipping to -1°C (31°F) and reaching a comfortable maximum of 17°C (63°F). With 212 mm (8.4 in) of precipitation spread over 15 days, it's wise to pack an umbrella. The month is also characterized by high humidity at 83%, adding to the cool, damp atmosphere.

December Temperature in Thermo

In December in Thermo, the average temperature is 9°C (48°F). Maximums can reach 17°C (63°F), and minimums can be as low as -1°C (31°F). It's advisable to pack layers to stay comfortable while exploring the local attractions.

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

The chart illustrates December temperature patterns in Thermo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Thermo, December typically has an average temperature of 9°C (48°F), with highs reaching up to 17°C (63°F) and lows dropping to around -1°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec434649556370767870625548
Data source: Temperature data for Thermo generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Thermo

In Thermo in December, the precipitation amount is 212 mm (8.4 in) over a span of 15 days.

December Precipitation Trends in Thermo

The chart displays monthly precipitation patterns in Thermo, 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 Thermo, December typically receives around 212 mm (8.4 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec16412410460526535244482138212
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Thermo

In Thermo in December humidity is 83%. With an average temperature of 9°C (48°F), this humidity feels like an enveloping blanket, making outdoor activities quite uncomfortable and encouraging travelers to seek shelter or shade frequently.

December Average Humidity in Thermo

This chart illustrates the average monthly humidity levels in Thermo, 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 Thermo is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%78%76%70%72%60%56%47%56%70%80%83%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Thermo

In Thermo in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Thermo, you can check the information here.

Maximum UV Index Levels in Thermo for December

The chart shows the monthly maximum UV Index (UVI) for Thermo 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 Thermo typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3568101110108643
Data source: Thermo 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 Thermo Compares to Other Months

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

This table compares monthly weather conditions in Thermo, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (44°F)164 mm (6.5 inches)84%moderate
February Weather8°C (47°F)123 mm (4.9 inches)78%moderate
March Weather9°C (49°F)104 mm (4.1 inches)75%high
April Weather13°C (55°F)60 mm (2.4 inches)70%very high
May Weather17°C (63°F)52 mm (2.0 inches)72%very high
June Weather21°C (70°F)65 mm (2.5 inches)60%extreme
July Weather25°C (77°F)35 mm (1.4 inches)56%very high
August Weather25°C (78°F)24 mm (0.9 inches)47%very high
September Weather21°C (71°F)44 mm (1.7 inches)56%very high
October Weather16°C (62°F)81 mm (3.2 inches)70%high
November Weather13°C (55°F)138 mm (5.4 inches)80%moderate
December Weather9°C (48°F)212 mm (8.4 inches)83%moderate

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