nomadseason

December Weather in Namerikawa, Japan

Last updated: August 23, 2025

In December, the average temperature in Namerikawa, Japan hovers around 5°C (42°F). Expect a range from a frosty -4°C (24°F) to a mild 21°C (71°F). With 231 mm (9.1 in) of precipitation spread over 23 days, this month tends to be quite wet, and you'll probably feel the 79% humidity lingering in the air.

December Temperature in Namerikawa

In December in Namerikawa, the average temperature is 5°C (42°F), with maximums reaching 21°C (71°F) and minimums dropping to -4°C (24°F). Be prepared for a wide range of temperatures if you plan to travel during this time.

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

The chart illustrates December temperature patterns in Namerikawa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Namerikawa, December typically has an average temperature of 5°C (42°F), with highs reaching up to 21°C (71°F) and lows dropping to around -4°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec363745536369778072625242
Data source: Temperature data for Namerikawa generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Namerikawa

In Namerikawa in December, the total precipitation amount reaches 231 mm (9.1 in) over the course of 23 days.

December Precipitation Trends in Namerikawa

The chart displays monthly precipitation patterns in Namerikawa, 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 Namerikawa, December typically receives around 231 mm (9.1 inches) of precipitation spread over approximately 23 days.
JanFebMarAprMayJunJulAugSepOctNovDec198179167179158190357264223216135231
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Namerikawa

In Namerikawa in December, humidity is 79%. With an average temperature of 5°C (42°F), this humidity feels like a chilly mist enveloping you, making outdoor activities challenging and travel less appealing, as the dampness clings to your skin and the cold bites through your layers.

December Average Humidity in Namerikawa

This chart illustrates the average monthly humidity levels in Namerikawa, 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 Namerikawa is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%78%76%77%85%89%93%92%84%81%77%79%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Namerikawa

In Namerikawa 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 Namerikawa, you can check the information here.

Maximum UV Index Levels in Namerikawa for December

The chart shows the monthly maximum UV Index (UVI) for Namerikawa 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 Namerikawa typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec458101011111110753
Data source: Namerikawa 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 Namerikawa Compares to Other Months

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

This table compares monthly weather conditions in Namerikawa, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (37°F)197 mm (7.8 inches)80%moderate
February Weather3°C (37°F)179 mm (7.0 inches)78%moderate
March Weather7°C (45°F)167 mm (6.6 inches)76%very high
April Weather12°C (53°F)179 mm (7.0 inches)77%very high
May Weather17°C (64°F)158 mm (6.2 inches)85%very high
June Weather21°C (69°F)190 mm (7.5 inches)89%extreme
July Weather25°C (78°F)357 mm (14.0 inches)93%extreme
August Weather27°C (80°F)264 mm (10.4 inches)92%extreme
September Weather22°C (73°F)223 mm (8.8 inches)84%very high
October Weather17°C (62°F)216 mm (8.5 inches)81%high
November Weather11°C (52°F)135 mm (5.3 inches)77%moderate
December Weather5°C (42°F)231 mm (9.1 inches)79%moderate

Compare Namerikawa's Climate with Cities Worldwide