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December Weather in Kasama, Japan

Last updated: August 23, 2025

In December, the average temperature in Kasama, Japan hovers around 6°C (43°F). Expect minimum temperatures to dip as low as -3°C (28°F), while the maximum can reach up to 19°C (66°F). With an average precipitation of 56 mm (2.2 in) over 6 days, and an average humidity of 77%, it's a month where both temperature and moisture levels can significantly vary.

December Temperature in Kasama

In December in Kasama, the average temperature is 6°C (43°F). The maximum can reach 19°C (66°F), while the minimum can drop as low as -3°C (28°F). This range offers travelers a cool climate, making it ideal for layering and exploring the outdoors comfortably.

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

The chart illustrates December temperature patterns in Kasama, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kasama, December typically has an average temperature of 6°C (43°F), with highs reaching up to 19°C (66°F) and lows dropping to around -3°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec394148556570778073635343
Data source: Temperature data for Kasama 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 Kasama

In Kasama in December, the precipitation amount is 56 mm (2.2 in) spread over 6 days.

December Precipitation Trends in Kasama

The chart displays monthly precipitation patterns in Kasama, 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 Kasama, December typically receives around 56 mm (2.2 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec41401371221321412261401692256956
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Kasama

In Kasama in December humidity is 77%. With an average temperature of 6°C (43°F), this humidity feels like a damp chill that seeps into your bones, making it essential to dress warmly and stay active while exploring the area.

December Average Humidity in Kasama

This chart illustrates the average monthly humidity levels in Kasama, 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 Kasama is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%75%72%73%80%87%93%90%84%80%77%77%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Kasama

In Kasama 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 Kasama, you can check the information here.

Maximum UV Index Levels in Kasama for December

The chart shows the monthly maximum UV Index (UVI) for Kasama 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 Kasama typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101111109653
Data source: Kasama 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 Kasama Compares to Other Months

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

This table compares monthly weather conditions in Kasama, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)41 mm (1.6 inches)76%moderate
February Weather5°C (41°F)40 mm (1.6 inches)75%moderate
March Weather9°C (48°F)137 mm (5.4 inches)72%high
April Weather13°C (56°F)122 mm (4.8 inches)73%very high
May Weather18°C (65°F)132 mm (5.2 inches)80%very high
June Weather21°C (70°F)141 mm (5.5 inches)87%extreme
July Weather25°C (77°F)226 mm (8.9 inches)92%extreme
August Weather27°C (81°F)140 mm (5.5 inches)90%very high
September Weather23°C (73°F)169 mm (6.7 inches)84%very high
October Weather17°C (63°F)225 mm (8.9 inches)80%high
November Weather12°C (54°F)69 mm (2.7 inches)77%moderate
December Weather6°C (43°F)56 mm (2.2 inches)77%moderate

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