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May Weather in Kosaka, Japan

Last updated: August 23, 2025

In May, the average temperature in Kosaka, Japan hovers around 14°C (57°F). Expect a comfortable range, with minimums of 2°C (37°F) and maximums of 29°C (84°F). However, be prepared for some rain, as 116 mm (4.6 in) of precipitation may fall over 14 days. With an average humidity of 86%, it’s wise to pack accordingly for this lush and vibrant locale!

May Temperature in Kosaka

In May, in Kosaka, the average temperature is 14°C (57°F). The maximum can reach 29°C (84°F) and the minimum can be as low as 2°C (37°F). Be prepared for a range of temperatures and pack accordingly for your travels!

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

The chart illustrates May temperature patterns in Kosaka, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kosaka, May typically has an average temperature of 14°C (57°F), with highs reaching up to 29°C (84°F) and lows dropping to around 2°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec262735455763717265534230
Data source: Temperature data for Kosaka 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 Kosaka

In Kosaka in May, the total precipitation amount is 116 mm (4.6 in) spread over a duration of 14 days.

May Precipitation Trends in Kosaka

The chart displays monthly precipitation patterns in Kosaka, 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 Kosaka, May typically receives around 116 mm (4.6 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec78108107127116142168179137166100114
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Kosaka

In Kosaka in May humidity is 86%. With an average temperature of 14°C (57°F), this humidity feels like a heavy blanket enveloping you, making travel feel oppressive and uncomfortably sticky.

May Average Humidity in Kosaka

This chart illustrates the average monthly humidity levels in Kosaka, 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 Kosaka is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%78%77%78%86%91%95%97%89%82%78%77%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Kosaka

In Kosaka in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Kosaka.

Maximum UV Index Levels in Kosaka for May

The chart shows the monthly maximum UV Index (UVI) for Kosaka 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 Kosaka typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346891010119642
Data source: Kosaka 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 Kosaka Compares to Other Months

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

This table compares monthly weather conditions in Kosaka, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (26°F)78 mm (3.1 inches)79%moderate
February Weather-3°C (28°F)108 mm (4.3 inches)78%moderate
March Weather2°C (35°F)107 mm (4.2 inches)77%high
April Weather7°C (45°F)127 mm (5.0 inches)78%very high
May Weather14°C (57°F)116 mm (4.6 inches)86%very high
June Weather17°C (63°F)142 mm (5.6 inches)91%very high
July Weather22°C (71°F)168 mm (6.6 inches)95%very high
August Weather22°C (73°F)179 mm (7.1 inches)97%extreme
September Weather18°C (65°F)137 mm (5.4 inches)89%very high
October Weather12°C (54°F)166 mm (6.5 inches)81%high
November Weather6°C (42°F)100 mm (4.0 inches)78%moderate
December Weather-1°C (30°F)114 mm (4.5 inches)77%low

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