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December Weather in Sagamihara, Japan

Last updated: August 23, 2025

In December, the average temperature in Sagamihara, Japan hovers around 7°C (44°F), with a minimum dropping to a brisk -4°C (25°F) and a maximum peaking at a mild 21°C (71°F). Expect 68 mm (2.7 in) of precipitation spread over approximately 9 days, contributing to an average humidity of 78%. Plan accordingly for this varied weather!

December Temperature in Sagamihara

In December in Sagamihara, the average temperature is 7°C (44°F). The maximum can reach 21°C (71°F), and the minimum can be as low as -4°C (25°F). Be prepared for a broad range of temperatures during your travels!

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

The chart illustrates December temperature patterns in Sagamihara, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sagamihara, December typically has an average temperature of 7°C (44°F), with highs reaching up to 21°C (71°F) and lows dropping to around -4°C (25°F).
JanFebMarAprMayJunJulAugSepOctNovDec394148556470778072635444
Data source: Temperature data for Sagamihara 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 Sagamihara

In Sagamihara in December, the precipitation amount is 68 mm (2.7 in) spread over 9 days.

December Precipitation Trends in Sagamihara

The chart displays monthly precipitation patterns in Sagamihara, 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 Sagamihara, December typically receives around 68 mm (2.7 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec57661771481401982771572213178468
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Sagamihara

In Sagamihara 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 Sagamihara

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

In Sagamihara 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 Sagamihara for better planning.

Maximum UV Index Levels in Sagamihara for December

The chart shows the monthly maximum UV Index (UVI) for Sagamihara 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 Sagamihara typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46891111111110754
Data source: Sagamihara 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 Sagamihara Compares to Other Months

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

This table compares monthly weather conditions in Sagamihara, 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 (2.2 inches)76%moderate
February Weather5°C (41°F)66 mm (2.6 inches)74%high
March Weather9°C (48°F)177 mm (7.0 inches)70%very high
April Weather13°C (56°F)148 mm (5.8 inches)74%very high
May Weather18°C (65°F)140 mm (5.5 inches)81%extreme
June Weather21°C (70°F)198 mm (7.8 inches)88%extreme
July Weather25°C (77°F)277 mm (10.9 inches)93%extreme
August Weather27°C (80°F)157 mm (6.2 inches)90%extreme
September Weather22°C (73°F)221 mm (8.7 inches)86%very high
October Weather17°C (63°F)317 mm (12.5 inches)83%high
November Weather12°C (54°F)84 mm (3.3 inches)80%moderate
December Weather7°C (44°F)68 mm (2.7 inches)78%moderate

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