May Weather in Isahaya, Japan

Last updated: August 23, 2025

In Isahaya, Japan, the average temperature in May hovers around 19°C (67°F), with a minimum of 12°C (54°F) and a maximum reaching 25°C (77°F). Prepare for 229 mm (9.0 in) of precipitation spread over 11 days, and expect high humidity levels at 87%—perfect for those who enjoy a lush, vibrant atmosphere!

May Temperature in Isahaya

In May in Isahaya, the average temperature is 19°C (67°F). Maximums can reach 25°C (77°F), while minimums can drop to as low as 12°C (54°F). This makes it a comfortable time for travelers to explore the area while enjoying mild weather.

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

The chart illustrates May temperature patterns in Isahaya, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Isahaya, May typically has an average temperature of 19°C (67°F), with highs reaching up to 25°C (77°F) and lows dropping to around 12°C (54°F).

Data source: Temperature data for Isahaya generated using information from the Copernicus Climate Change Service.

May Precipitation in Isahaya

In Isahaya in May, the total precipitation amount is 229 mm (9.0 in), which falls over the course of 11 days.

May Precipitation Trends in Isahaya

The chart displays monthly precipitation patterns in Isahaya, 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 Isahaya, May typically receives around 229 mm (9.0 inches) of precipitation spread over approximately 11 days.

Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

May Humidity in Isahaya

In Isahaya in May, humidity is 87%. With an average temperature of 19°C (67°F), this humidity feels like a warm blanket wrapping around you, making traveling a bit heavier and leaving you craving for refreshing drinks and shade throughout the day.

May Average Humidity in Isahaya

This chart illustrates the average monthly humidity levels in Isahaya, 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 Isahaya is approximately 87%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Isahaya

In Isahaya 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 Isahaya.

Maximum UV Index Levels in Isahaya for May

The chart shows the monthly maximum UV Index (UVI) for Isahaya 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 Isahaya typically reaches 11, which falls under the extreme exposure category.

Data source: Isahaya 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 Isahaya Compares to Other Months

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

This table compares monthly weather conditions in Isahaya, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (47°F)	61 mm (2.4 inches)	73%	moderate
February Weather	9°C (48°F)	106 mm (4.2 inches)	69%	high
March Weather	12°C (54°F)	157 mm (6.2 inches)	71%	very high
April Weather	15°C (60°F)	143 mm (5.6 inches)	79%	extreme
May Weather	19°C (67°F)	229 mm (9.0 inches)	87%	extreme
June Weather	22°C (73°F)	272 mm (10.7 inches)	91%	extreme
July Weather	26°C (79°F)	442 mm (17.4 inches)	97%	extreme
August Weather	28°C (82°F)	326 mm (12.8 inches)	94%	extreme
September Weather	25°C (77°F)	225 mm (8.9 inches)	84%	extreme
October Weather	20°C (69°F)	117 mm (4.6 inches)	79%	very high
November Weather	15°C (60°F)	81 mm (3.2 inches)	75%	high
December Weather	10°C (51°F)	92 mm (3.6 inches)	72%	moderate