May Weather in Isehara, Japan

Last updated: August 23, 2025

The average temperature in Isehara, Japan during May is a comfortable 18°C (65°F). Expect a minimum of 5°C (41°F) and a pleasant maximum of 29°C (85°F). However, be prepared for some rainfall, as the area receives about 140 mm (5.5 in) of precipitation over 13 days. With an average humidity of 81%, Isehara can feel quite tropical this time of year!

May Temperature in Isehara

In May in Isehara, the average temperature is 18°C (65°F). Maximums can reach 29°C (85°F), and minimums can drop as low as 5°C (41°F). This range makes Isehara a comfortable destination for travelers, offering pleasant conditions for outdoor activities.

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

The chart illustrates May temperature patterns in Isehara, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Isehara, May typically has an average temperature of 18°C (65°F), with highs reaching up to 29°C (85°F) and lows dropping to around 5°C (41°F).

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

May Precipitation in Isehara

In Isehara in May, the total precipitation amount is 140 mm (5.5 in) over the course of 13 days.

May Precipitation Trends in Isehara

The chart displays monthly precipitation patterns in Isehara, 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 Isehara, May typically receives around 140 mm (5.5 inches) of precipitation spread over approximately 13 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

May Humidity in Isehara

In Isehara in May, humidity is 81%. With an average temperature of 18°C (65°F), this humidity feels like a thick blanket wrapping around you, making every step feel heavier and the air thick and sultry—a challenging environment for traveling.

May Average Humidity in Isehara

This chart illustrates the average monthly humidity levels in Isehara, 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 Isehara is approximately 81%, 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 Isehara

In Isehara 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 Isehara.

Maximum UV Index Levels in Isehara for May

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

Data source: Isehara 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 Isehara Compares to Other Months

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

This table compares monthly weather conditions in Isehara, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (39°F)	57 mm (2.2 inches)	76%	moderate
February Weather	5°C (41°F)	66 mm (2.6 inches)	74%	high
March Weather	9°C (48°F)	177 mm (7.0 inches)	70%	very high
April Weather	13°C (56°F)	148 mm (5.8 inches)	74%	very high
May Weather	18°C (65°F)	140 mm (5.5 inches)	81%	extreme
June Weather	21°C (70°F)	198 mm (7.8 inches)	88%	extreme
July Weather	25°C (77°F)	277 mm (10.9 inches)	93%	extreme
August Weather	27°C (80°F)	157 mm (6.2 inches)	90%	extreme
September Weather	22°C (73°F)	221 mm (8.7 inches)	86%	very high
October Weather	17°C (63°F)	317 mm (12.5 inches)	83%	high
November Weather	12°C (54°F)	84 mm (3.3 inches)	80%	moderate
December Weather	7°C (44°F)	68 mm (2.7 inches)	78%	moderate