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December Weather in Nishiawakura, Japan

Last updated: August 23, 2025

In Nishiawakura, Japan, the average temperature in December hovers around 4°C (39°F). Expect chilly days with temperatures ranging from a minimum of -7°C (20°F) to a maximum of 19°C (66°F). During this month, receive significant precipitation, with an average of 108 mm (4.3 in) spread over 18 days. Be prepared for a humid atmosphere, as the average humidity is a notable 82%.

December Temperature in Nishiawakura

In December in Nishiawakura, the average temperature is 4°C (39°F). The maximum can reach 19°C (66°F), while the minimum can drop to as low as -7°C (20°F). Travelers should be prepared for a wide range of temperatures during this time, making it essential to dress in layers for comfort.

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

The chart illustrates December temperature patterns in Nishiawakura, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Nishiawakura, December typically has an average temperature of 4°C (39°F), with highs reaching up to 19°C (66°F) and lows dropping to around -7°C (20°F).
JanFebMarAprMayJunJulAugSepOctNovDec353644526268767870604939
Data source: Temperature data for Nishiawakura 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 Nishiawakura

In Nishiawakura in December, the precipitation amount is 108 mm (4.3 in) spread over the course of 18 days.

December Precipitation Trends in Nishiawakura

The chart displays monthly precipitation patterns in Nishiawakura, 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 Nishiawakura, December typically receives around 108 mm (4.3 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec818714413913922038430826922462108
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Nishiawakura

In Nishiawakura in December, humidity is 82%. With an average temperature of 4°C (39°F), this humidity feels like a chill that seeps into your bones, making it uncomfortable for traveling as you find yourself bundled up, yet still damp and cold.

December Average Humidity in Nishiawakura

This chart illustrates the average monthly humidity levels in Nishiawakura, 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 Nishiawakura is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%79%73%74%84%86%92%92%87%85%84%82%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Nishiawakura

In Nishiawakura 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 Nishiawakura, you can check the information here.

Maximum UV Index Levels in Nishiawakura for December

The chart shows the monthly maximum UV Index (UVI) for Nishiawakura 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 Nishiawakura typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468111111121210753
Data source: Nishiawakura 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 Nishiawakura Compares to Other Months

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

This table compares monthly weather conditions in Nishiawakura, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (35°F)81 mm (3.2 inches)82%moderate
February Weather2°C (36°F)87 mm (3.4 inches)79%high
March Weather7°C (44°F)144 mm (5.7 inches)73%very high
April Weather11°C (53°F)139 mm (5.5 inches)74%extreme
May Weather17°C (62°F)139 mm (5.5 inches)84%extreme
June Weather20°C (68°F)220 mm (8.6 inches)86%extreme
July Weather24°C (76°F)384 mm (15.1 inches)92%extreme
August Weather26°C (79°F)308 mm (12.1 inches)92%extreme
September Weather21°C (70°F)269 mm (10.6 inches)87%very high
October Weather16°C (60°F)224 mm (8.8 inches)85%high
November Weather9°C (49°F)62 mm (2.4 inches)84%moderate
December Weather4°C (39°F)108 mm (4.3 inches)82%moderate

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