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December Weather in Yoshii, Japan

Last updated: August 23, 2025

In December, the average temperature in Yoshii, Japan hovers around 6°C (43°F). While you might experience chilly lows of -2°C (29°F), the pleasant highs can reach up to 20°C (67°F). Be prepared for some rain, as the area sees an average precipitation of 54 mm (2.1 in) over about 8 days. With an average humidity of 86%, it’s a time when layers are your best friend!

December Temperature in Yoshii

In December in Yoshii, the average temperature is 6°C (43°F), with maximums reaching 20°C (67°F) and minimums dropping as low as -2°C (29°F). It's a great time to pack layers and enjoy the crisp air while exploring the beauty of Yoshii.

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

The chart illustrates December temperature patterns in Yoshii, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Yoshii, December typically has an average temperature of 6°C (43°F), with highs reaching up to 20°C (67°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec394147556469767971625243
Data source: Temperature data for Yoshii 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 Yoshii

In Yoshii in December, the total precipitation amount reaches 54 mm (2.1 in) over a span of 8 days.

December Precipitation Trends in Yoshii

The chart displays monthly precipitation patterns in Yoshii, 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 Yoshii, December typically receives around 54 mm (2.1 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec57551341481742123382142563195054
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Yoshii

In Yoshii in December humidity is 86%. With an average temperature of 6°C (43°F), this humidity feels like a chilling blanket enveloping you, making outdoor exploration feel damp and uncomfortable.

December Average Humidity in Yoshii

This chart illustrates the average monthly humidity levels in Yoshii, 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 Yoshii 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 Yoshii

In Yoshii 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 Yoshii, you can check the information here.

Maximum UV Index Levels in Yoshii for December

The chart shows the monthly maximum UV Index (UVI) for Yoshii 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 Yoshii typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46891111111110753
Data source: Yoshii 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 Yoshii Compares to Other Months

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

This table compares monthly weather conditions in Yoshii, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)57 mm (2.3 inches)88%moderate
February Weather5°C (41°F)55 mm (2.2 inches)86%high
March Weather9°C (48°F)134 mm (5.3 inches)81%very high
April Weather13°C (55°F)148 mm (5.8 inches)78%very high
May Weather18°C (65°F)174 mm (6.8 inches)81%extreme
June Weather21°C (69°F)212 mm (8.3 inches)88%extreme
July Weather24°C (76°F)338 mm (13.3 inches)92%extreme
August Weather26°C (79°F)214 mm (8.4 inches)92%extreme
September Weather22°C (71°F)256 mm (10.1 inches)89%very high
October Weather16°C (62°F)319 mm (12.6 inches)87%high
November Weather11°C (52°F)50 mm (2.0 inches)85%moderate
December Weather6°C (43°F)54 mm (2.1 inches)86%moderate

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