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May Weather in Ashiya, Japan

Last updated: August 23, 2025

In May, the average temperature in Ashiya, Japan is a pleasant 20°C (69°F). Expect a range from a cool 7°C (46°F) to a warm 32°C (89°F). Be prepared for some rain, as the precipitation typically totals 135 mm (5.3 in) over about 10 days. With an average humidity level of 84%, it’s a month where you can really feel the atmosphere!

May Temperature in Ashiya

In May in Ashiya, the average temperature is 20°C (69°F). The maximum can reach 32°C (89°F), and the minimum can be as low as 7°C (46°F). This makes Ashiya a great destination for travelers seeking comfortable weather with the option for warm or cooler experiences.

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

The chart illustrates May temperature patterns in Ashiya, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ashiya, May typically has an average temperature of 20°C (69°F), with highs reaching up to 32°C (89°F) and lows dropping to around 7°C (46°F).
JanFebMarAprMayJunJulAugSepOctNovDec444553606874818477675747
Data source: Temperature data for Ashiya 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 Ashiya

In Ashiya in May, the total precipitation amount is 135 mm (5.3 in) recorded over a span of 10 days.

May Precipitation Trends in Ashiya

The chart displays monthly precipitation patterns in Ashiya, 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 Ashiya, May typically receives around 135 mm (5.3 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec53691181091351802982552021104359
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Ashiya

In Ashiya in May humidity is 84%. With an average temperature of 20°C (69°F), this humidity feels like walking through a warm, moist blanket, making travel feel heavy and slightly fatigued as the heat clings to your skin and leaves you yearning for a refreshing breeze.

May Average Humidity in Ashiya

This chart illustrates the average monthly humidity levels in Ashiya, 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 Ashiya is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%71%71%78%84%86%92%91%84%83%81%79%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Ashiya

In Ashiya in May, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Ashiya.

Maximum UV Index Levels in Ashiya for May

The chart shows the monthly maximum UV Index (UVI) for Ashiya 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 Ashiya typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468111111121211764
Data source: Ashiya 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 Ashiya Compares to Other Months

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

This table compares monthly weather conditions in Ashiya, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (44°F)53 mm (2.1 inches)75%moderate
February Weather7°C (45°F)68 mm (2.7 inches)71%high
March Weather11°C (53°F)118 mm (4.7 inches)71%very high
April Weather16°C (60°F)109 mm (4.3 inches)78%extreme
May Weather20°C (69°F)135 mm (5.3 inches)84%extreme
June Weather23°C (74°F)180 mm (7.1 inches)86%extreme
July Weather27°C (81°F)298 mm (11.7 inches)92%extreme
August Weather29°C (84°F)255 mm (10.0 inches)91%extreme
September Weather25°C (77°F)202 mm (8.0 inches)84%extreme
October Weather20°C (68°F)110 mm (4.3 inches)83%high
November Weather14°C (57°F)43 mm (1.7 inches)81%high
December Weather8°C (47°F)59 mm (2.3 inches)79%moderate

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