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December Weather in Futtsu, Japan

Last updated: August 23, 2025

In December, the average temperature in Futtsu, Japan hovers around 11°C (51°F). Expect temperatures to range from a chilly 3°C (37°F) to a comfortable 21°C (70°F). During this month, precipitation totals about 71 mm (2.8 in) spread over 8 days, with average humidity at a notable 78%.

December Temperature in Futtsu

In December, in Futtsu, the average temperature is 11°C (51°F). The maximum can reach 21°C (70°F), and the minimum can be as low as 3°C (37°F). Travelers should be prepared for mild days and chilly nights, making it ideal to pack layers for comfort.

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

The chart illustrates December temperature patterns in Futtsu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Futtsu, December typically has an average temperature of 11°C (51°F), with highs reaching up to 21°C (70°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec464753586671778075686051
Data source: Temperature data for Futtsu 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 Futtsu

In Futtsu in December, the precipitation amount is 71 mm (2.8 in) over the course of 8 days.

December Precipitation Trends in Futtsu

The chart displays monthly precipitation patterns in Futtsu, 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 Futtsu, December typically receives around 71 mm (2.8 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec615215512313617521111718927110972
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Futtsu

In Futtsu in December, humidity is 78%. With an average temperature of 11°C (51°F), this humidity feels like a damp chill that lingers in the air, making outdoor activities less inviting and leading to a persistent sense of coolness that can be invigorating yet uncomfortable for travelers.

December Average Humidity in Futtsu

This chart illustrates the average monthly humidity levels in Futtsu, 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 Futtsu is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%74%70%74%82%88%93%90%86%83%80%78%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Futtsu

In Futtsu in December, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Futtsu for better planning.

Maximum UV Index Levels in Futtsu for December

The chart shows the monthly maximum UV Index (UVI) for Futtsu 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 Futtsu typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec458101111111110754
Data source: Futtsu 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 Futtsu Compares to Other Months

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

This table compares monthly weather conditions in Futtsu, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (47°F)61 mm (2.4 inches)76%moderate
February Weather8°C (48°F)52 mm (2.0 inches)74%moderate
March Weather11°C (53°F)155 mm (6.1 inches)70%very high
April Weather14°C (58°F)123 mm (4.8 inches)74%very high
May Weather19°C (66°F)136 mm (5.3 inches)81%extreme
June Weather22°C (71°F)175 mm (6.9 inches)88%extreme
July Weather25°C (77°F)211 mm (8.3 inches)93%extreme
August Weather27°C (80°F)117 mm (4.6 inches)90%extreme
September Weather24°C (76°F)189 mm (7.4 inches)86%very high
October Weather20°C (68°F)271 mm (10.7 inches)83%high
November Weather16°C (60°F)108 mm (4.3 inches)80%moderate
December Weather11°C (51°F)71 mm (2.8 inches)78%moderate

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