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December Weather in Katsuta, Japan

Last updated: August 23, 2025

In December, the average temperature in Katsuta, Japan is a brisk 7°C (45°F). Expect chilly nights with minimums dipping to -1°C (30°F), while daytime highs can reach a pleasant 18°C (65°F). Be prepared for some rain, as the area experiences about 63 mm (2.5 in) of precipitation over 7 days. With an average humidity of 77%, layering is key to staying comfortable throughout your visit!

December Temperature in Katsuta

In December in Katsuta, the average temperature is 7°C (45°F). Maximums can reach 18°C (65°F), and minimums can be as low as -1°C (30°F). It's a great time for travelers to enjoy the crisp weather while exploring the area, but be sure to pack layers to stay comfortable throughout the day.

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

The chart illustrates December temperature patterns in Katsuta, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Katsuta, December typically has an average temperature of 7°C (45°F), with highs reaching up to 18°C (65°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec404148546469768073645545
Data source: Temperature data for Katsuta 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 Katsuta

In Katsuta in December, the precipitation amount is 63 mm (2.5 in) over a span of 7 days.

December Precipitation Trends in Katsuta

The chart displays monthly precipitation patterns in Katsuta, 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 Katsuta, December typically receives around 63 mm (2.5 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec48421481261371402151381762398063
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Katsuta

In Katsuta in December, humidity is 77%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill that clings to your skin, making it important to dress in layers for comfort while exploring the area.

December Average Humidity in Katsuta

This chart illustrates the average monthly humidity levels in Katsuta, 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 Katsuta 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 Katsuta

In Katsuta 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 Katsuta, you can check the information here.

Maximum UV Index Levels in Katsuta for December

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

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

This table compares monthly weather conditions in Katsuta, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (40°F)48 mm (1.9 inches)76%moderate
February Weather5°C (42°F)42 mm (1.6 inches)75%moderate
March Weather9°C (48°F)148 mm (5.8 inches)72%high
April Weather12°C (55°F)126 mm (5.0 inches)73%very high
May Weather18°C (64°F)137 mm (5.4 inches)80%very high
June Weather21°C (70°F)140 mm (5.5 inches)87%extreme
July Weather24°C (76°F)215 mm (8.4 inches)92%extreme
August Weather26°C (80°F)138 mm (5.4 inches)90%very high
September Weather23°C (73°F)176 mm (6.9 inches)84%very high
October Weather18°C (64°F)239 mm (9.4 inches)80%high
November Weather13°C (55°F)80 mm (3.2 inches)77%moderate
December Weather7°C (45°F)63 mm (2.5 inches)77%moderate

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