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May Weather in Unnan, Japan

Last updated: August 23, 2025

In May, the average temperature in Unnan, Japan is a comfortable 18°C (65°F). However, be prepared for temperature fluctuations, as the minimum can dip to 5°C (42°F), while the maximum can soar up to 31°C (88°F). During this month, expect precipitation of approximately 102 mm (4.0 in) across about 10 days, with an average humidity of 84% adding to the overall weather experience.

May Temperature in Unnan

In May in Unnan, the average temperature is 18°C (65°F). Maximums can reach 31°C (88°F), while minimums can drop as low as 5°C (42°F). It's an ideal time for travelers to enjoy a comfortable climate, perfect for outdoor activities and sightseeing.

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

The chart illustrates May temperature patterns in Unnan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Unnan, May typically has an average temperature of 18°C (65°F), with highs reaching up to 31°C (88°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec383947556470788172625242
Data source: Temperature data for Unnan 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 Unnan

In Unnan in May, the total precipitation amount is 102 mm (4.0 in) falling over the course of 10 days.

May Precipitation Trends in Unnan

The chart displays monthly precipitation patterns in Unnan, 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 Unnan, May typically receives around 102 mm (4.0 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec9610213812510219730126323817258121
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Unnan

In Unnan in May, humidity is 84%. With an average temperature of 18°C (65°F), this humidity feels like a thick blanket enveloping you, making travel feel heavy and slightly uncomfortable as the air clings to your skin and limits your breath.

May Average Humidity in Unnan

This chart illustrates the average monthly humidity levels in Unnan, 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 Unnan is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%79%73%74%84%86%92%92%87%85%84%82%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Unnan

In Unnan 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 Unnan.

Maximum UV Index Levels in Unnan for May

The chart shows the monthly maximum UV Index (UVI) for Unnan 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 Unnan typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec458111111121210753
Data source: Unnan 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 Unnan Compares to Other Months

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

This table compares monthly weather conditions in Unnan, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)96 mm (3.8 inches)82%moderate
February Weather4°C (40°F)102 mm (4.0 inches)79%moderate
March Weather8°C (47°F)138 mm (5.4 inches)73%very high
April Weather13°C (55°F)125 mm (4.9 inches)74%extreme
May Weather18°C (65°F)102 mm (4.0 inches)84%extreme
June Weather21°C (70°F)197 mm (7.7 inches)86%extreme
July Weather25°C (78°F)301 mm (11.9 inches)92%extreme
August Weather27°C (81°F)263 mm (10.4 inches)92%extreme
September Weather22°C (72°F)238 mm (9.4 inches)87%very high
October Weather17°C (62°F)172 mm (6.8 inches)85%high
November Weather11°C (52°F)58 mm (2.3 inches)84%moderate
December Weather6°C (43°F)121 mm (4.8 inches)82%moderate

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