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May Weather in Koshimizu, Japan

Last updated: August 23, 2025

In May, the average temperature in Koshimizu, Japan hovers around 10°C (50°F), with a minimum dipping to 0°C (33°F) and a maximum soaring to 33°C (92°F). Expect 95 mm (3.7 in) of precipitation spread over approximately 13 days, contributing to an average humidity level of 86%. Stay prepared for a mix of weather!

May Temperature in Koshimizu

In May in Koshimizu, the average temperature is 10°C (50°F). Maximum temperatures can reach 33°C (92°F), and minimums can drop as low as 0°C (33°F). Be prepared for a wide range of temperatures when traveling during this month.

May Weather in Koshimizu: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Koshimizu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Koshimizu, May typically has an average temperature of 10°C (50°F), with highs reaching up to 33°C (92°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec191828395056646561513926
Data source: Temperature data for Koshimizu 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.

May Precipitation in Koshimizu

In Koshimizu in May, the precipitation amount is 95 mm (3.7 in) over the course of 13 days.

May Precipitation Trends in Koshimizu

The chart displays monthly precipitation patterns in Koshimizu, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Koshimizu, May typically receives around 95 mm (3.7 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec54558872959679129951599670
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Koshimizu

In Koshimizu in May humidity is 86%. With an average temperature of 10°C (50°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities uncomfortable and sticky, which can dampen the spirit of travel.

May Average Humidity in Koshimizu

This chart illustrates the average monthly humidity levels in Koshimizu, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Koshimizu is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%83%83%83%86%88%93%96%89%83%80%79%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Koshimizu

In Koshimizu in May, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Koshimizu.

Maximum UV Index Levels in Koshimizu for May

The chart shows the monthly maximum UV Index (UVI) for Koshimizu in May, 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 May, the maximum UV index in Koshimizu typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2367891098532
Data source: Koshimizu May 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 May Weather in Koshimizu Compares to Other Months

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

This table compares monthly weather conditions in Koshimizu, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-7°C (19°F)54 mm (2.1 inches)84%low
February Weather-8°C (19°F)55 mm (2.2 inches)83%moderate
March Weather-2°C (29°F)88 mm (3.5 inches)83%high
April Weather4°C (39°F)72 mm (2.8 inches)83%high
May Weather10°C (50°F)95 mm (3.7 inches)86%very high
June Weather13°C (56°F)96 mm (3.8 inches)88%very high
July Weather18°C (64°F)79 mm (3.1 inches)93%very high
August Weather18°C (65°F)129 mm (5.1 inches)96%very high
September Weather16°C (61°F)95 mm (3.7 inches)89%very high
October Weather11°C (51°F)159 mm (6.2 inches)83%moderate
November Weather4°C (40°F)96 mm (3.8 inches)80%moderate
December Weather-3°C (27°F)70 mm (2.8 inches)79%low

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