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December Weather in Nagato, Japan

Last updated: August 23, 2025

In Nagato, Japan, the average temperature in December hovers around 9°C (48°F). Visitors can expect minimum temperatures dipping to 0°C (33°F) and rising to a pleasant 21°C (70°F). With an average precipitation of 74 mm (2.9 in) spread across 8 days, it’s wise to carry an umbrella. Additionally, the average humidity level sits at a comfortable 75%, ensuring a refreshing atmosphere for all.

December Temperature in Nagato

In December in Nagato, the average temperature is 9°C (48°F). The maximum can reach 21°C (70°F) and the minimum can be as low as 0°C (33°F). This mild weather makes Nagato an ideal destination for travelers who enjoy outdoor activities during this time of year.

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

The chart illustrates December temperature patterns in Nagato, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Nagato, December typically has an average temperature of 9°C (48°F), with highs reaching up to 21°C (70°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec454552596773808376675748
Data source: Temperature data for Nagato 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 Nagato

In Nagato in December, the precipitation amount is 74 mm (2.9 in) over a period of 8 days.

December Precipitation Trends in Nagato

The chart displays monthly precipitation patterns in Nagato, 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 Nagato, December typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec64771391101111782982482331174574
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Nagato

In Nagato in December humidity is 75%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill, making it essential to dress in layers for comfort while traveling.

December Average Humidity in Nagato

This chart illustrates the average monthly humidity levels in Nagato, 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 Nagato is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%72%69%75%84%88%95%93%84%79%76%75%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Nagato

In Nagato 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 Nagato, you can check the information here.

Maximum UV Index Levels in Nagato for December

The chart shows the monthly maximum UV Index (UVI) for Nagato 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 Nagato typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec458101111121210753
Data source: Nagato 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 Nagato Compares to Other Months

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

This table compares monthly weather conditions in Nagato, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (45°F)64 mm (2.5 inches)76%moderate
February Weather7°C (46°F)77 mm (3.0 inches)72%moderate
March Weather11°C (52°F)139 mm (5.5 inches)69%very high
April Weather15°C (59°F)109 mm (4.3 inches)75%very high
May Weather19°C (67°F)111 mm (4.4 inches)84%extreme
June Weather23°C (73°F)178 mm (7.0 inches)88%extreme
July Weather26°C (80°F)298 mm (11.7 inches)95%extreme
August Weather28°C (83°F)248 mm (9.8 inches)93%extreme
September Weather24°C (76°F)233 mm (9.2 inches)84%very high
October Weather19°C (67°F)117 mm (4.6 inches)79%high
November Weather14°C (58°F)45 mm (1.8 inches)76%moderate
December Weather9°C (48°F)74 mm (2.9 inches)75%moderate

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