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December Weather in Wako, Japan

Last updated: August 23, 2025

In Wako, Japan, the average temperature in December hovers around 7°C (44°F), showcasing a tranquil climate. Expect lows of -4°C (25°F) and highs reaching a pleasant 22°C (71°F). During this period, precipitation totals about 55 mm (2.2 in) spread over 7 days, accompanied by an average humidity of 78%. Perfect for outdoor adventures—just don’t forget your umbrella!

December Temperature in Wako

In December in Wako, the average temperature is 7°C (44°F). Maximums can reach 22°C (71°F) and minimums can be as low as -4°C (25°F). This temperature range makes Wako an interesting destination for travelers seeking both crisp, cool days and the possibility of warmer sunshine.

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

The chart illustrates December temperature patterns in Wako, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Wako, December typically has an average temperature of 7°C (44°F), with highs reaching up to 22°C (71°F) and lows dropping to around -4°C (25°F).
JanFebMarAprMayJunJulAugSepOctNovDec394250576672788274645444
Data source: Temperature data for Wako 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 Wako

In Wako in December, the precipitation amount is 55 mm (2.2 in) over the course of 7 days.

December Precipitation Trends in Wako

The chart displays monthly precipitation patterns in Wako, 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 Wako, December typically receives around 55 mm (2.2 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec47501441261171682521332012916955
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Wako

In Wako in December, humidity is 78%. With an average temperature of 7°C (44°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and prompting travelers to seek cozy indoor spaces or warm beverages for comfort.

December Average Humidity in Wako

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

In Wako 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 Wako for better planning.

Maximum UV Index Levels in Wako for December

The chart shows the monthly maximum UV Index (UVI) for Wako 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 Wako typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35891111111110754
Data source: Wako 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 Wako Compares to Other Months

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

This table compares monthly weather conditions in Wako, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)47 mm (1.8 inches)76%moderate
February Weather6°C (42°F)50 mm (2.0 inches)74%moderate
March Weather10°C (50°F)144 mm (5.7 inches)70%very high
April Weather14°C (57°F)126 mm (5.0 inches)74%very high
May Weather19°C (67°F)117 mm (4.6 inches)81%extreme
June Weather22°C (72°F)168 mm (6.6 inches)88%extreme
July Weather26°C (79°F)252 mm (9.9 inches)93%extreme
August Weather28°C (82°F)133 mm (5.3 inches)90%extreme
September Weather23°C (74°F)201 mm (7.9 inches)86%very high
October Weather18°C (64°F)291 mm (11.4 inches)83%high
November Weather12°C (55°F)69 mm (2.7 inches)80%moderate
December Weather7°C (44°F)55 mm (2.2 inches)78%moderate

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