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December Weather in Numata, Japan

Last updated: August 23, 2025

In December, the average temperature in Numata, Japan hovers around 1°C (33°F). Expect the minimum temperature to drop to -15°C (5°F), while afternoons may warm up to a comfortable 16°C (61°F). Keep in mind that this month sees 107 mm (4.2 in) of precipitation across 19 days, contributing to a high average humidity of 86%.

December Temperature in Numata

In December in Numata, the average temperature is 1°C (33°F). The maximum can reach 16°C (61°F), while the minimum can drop as low as -15°C (5°F). Be prepared for a wide range of temperatures when traveling during this time.

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

The chart illustrates December temperature patterns in Numata, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Numata, December typically has an average temperature of 1°C (33°F), with highs reaching up to 16°C (61°F) and lows dropping to around -15°C (5°F).
JanFebMarAprMayJunJulAugSepOctNovDec272937465763707365554433
Data source: Temperature data for Numata 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 Numata

In Numata in December, the precipitation amount is 107 mm (4.2 in) over the course of 19 days.

December Precipitation Trends in Numata

The chart displays monthly precipitation patterns in Numata, 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 Numata, December typically receives around 107 mm (4.2 inches) of precipitation spread over approximately 19 days.
JanFebMarAprMayJunJulAugSepOctNovDec1009613613214315426716016122564107
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Numata

In Numata in December humidity is 86%. With average temperature 1°C (33°F), this humidity feels like a biting chill that seeps into your bones, making travel uncomfortable and necessitating extra layers for warmth to counteract the dampness in the air.

December Average Humidity in Numata

This chart illustrates the average monthly humidity levels in Numata, 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 Numata is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%81%79%81%88%92%92%89%87%85%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Numata

In Numata 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 Numata, you can check the information here.

Maximum UV Index Levels in Numata for December

The chart shows the monthly maximum UV Index (UVI) for Numata 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 Numata typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46991111111110753
Data source: Numata 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 Numata Compares to Other Months

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

This table compares monthly weather conditions in Numata, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (28°F)100 mm (3.9 inches)88%moderate
February Weather-2°C (29°F)96 mm (3.8 inches)86%high
March Weather3°C (38°F)136 mm (5.4 inches)81%very high
April Weather8°C (46°F)132 mm (5.2 inches)78%very high
May Weather14°C (57°F)143 mm (5.6 inches)81%extreme
June Weather17°C (63°F)154 mm (6.1 inches)88%extreme
July Weather21°C (70°F)267 mm (10.5 inches)92%extreme
August Weather23°C (73°F)160 mm (6.3 inches)92%extreme
September Weather18°C (65°F)161 mm (6.3 inches)89%very high
October Weather13°C (55°F)225 mm (8.9 inches)87%high
November Weather6°C (44°F)64 mm (2.5 inches)85%moderate
December Weather1°C (33°F)107 mm (4.2 inches)86%moderate

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