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December Weather in Lebanon, United States

Last updated: June 24, 2025

In December, the average temperature in Lebanon, United States hovers around 7°C (46°F), with temperatures dipping as low as -10°C (15°F) and peaking at a comfortable 23°C (73°F). Expect 11 days of precipitation, accumulating to 152 mm (6.0 in), all while the air remains quite humid, with an average humidity of 88%.

December Temperature in Lebanon

In December in Lebanon, the average temperature is 7°C (46°F). The maximum can reach 23°C (73°F), while the minimum can drop to as low as -10°C (15°F). This temperature range makes Lebanon an ideal destination for travelers seeking a mix of mild days and crisp, chilly evenings.

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

The chart illustrates December temperature patterns in Lebanon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lebanon, December typically has an average temperature of 7°C (46°F), with highs reaching up to 23°C (73°F) and lows dropping to around -10°C (15°F).
JanFebMarAprMayJunJulAugSepOctNovDec414552597076807874634945
Data source: Temperature data for Lebanon 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 Lebanon

In Lebanon in December, the precipitation amount reaches 152 mm (6.0 in) over the course of 11 days.

December Precipitation Trends in Lebanon

The chart displays monthly precipitation patterns in Lebanon, 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 Lebanon, December typically receives around 152 mm (6.0 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec10818916614612214512612112514085152
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Lebanon

In Lebanon in December humidity is 88%. With an average temperature of 7°C (46°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and requiring you to dress in layers to stay warm and dry while exploring.

December Average Humidity in Lebanon

This chart illustrates the average monthly humidity levels in Lebanon, 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 Lebanon is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%86%82%83%83%80%74%71%78%88%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Lebanon

In Lebanon 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 Lebanon, you can check the information here.

Maximum UV Index Levels in Lebanon for December

The chart shows the monthly maximum UV Index (UVI) for Lebanon 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 Lebanon typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36710101111109753
Data source: Lebanon 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 Lebanon Compares to Other Months

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

This table compares monthly weather conditions in Lebanon, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)108 mm (4.2 inches)87%moderate
February Weather7°C (45°F)189 mm (7.4 inches)86%high
March Weather11°C (53°F)166 mm (6.5 inches)86%high
April Weather15°C (59°F)146 mm (5.7 inches)82%very high
May Weather21°C (70°F)122 mm (4.8 inches)82%very high
June Weather25°C (77°F)145 mm (5.7 inches)83%extreme
July Weather27°C (80°F)126 mm (4.9 inches)80%extreme
August Weather26°C (78°F)121 mm (4.8 inches)74%very high
September Weather23°C (74°F)125 mm (4.9 inches)71%very high
October Weather17°C (64°F)140 mm (5.5 inches)78%high
November Weather9°C (49°F)85 mm (3.4 inches)88%moderate
December Weather7°C (46°F)152 mm (6.0 inches)88%moderate

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