May Weather in Sasayama, Japan

Last updated: August 23, 2025

In Sasayama, Japan, the average temperature in May is a comfortable 19°C (66°F), with minimums dipping to 5°C (42°F) and maximums soaring to 30°C (87°F). With an average precipitation of 140 mm (5.5 in) spread over about 10 days, you can expect a few rain showers. Additionally, the air carries an average humidity of 83%, adding to the unique atmosphere of this location.

May Temperature in Sasayama

In May in Sasayama, the average temperature is 19°C (66°F), with a maximum that can reach 30°C (87°F) and a minimum that can drop to as low as 5°C (42°F). This makes it a great time for travelers to enjoy a comfortable climate while exploring the local attractions.

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

The chart illustrates May temperature patterns in Sasayama, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sasayama, May typically has an average temperature of 19°C (66°F), with highs reaching up to 30°C (87°F) and lows dropping to around 5°C (42°F).

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

May Precipitation in Sasayama

In Sasayama in May, the total precipitation amount is 140 mm (5.5 in) spread over a period of 10 days.

May Precipitation Trends in Sasayama

The chart displays monthly precipitation patterns in Sasayama, 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 Sasayama, May typically receives around 140 mm (5.5 inches) of precipitation spread over approximately 10 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 Sasayama

In Sasayama in May, humidity is 83%. With an average temperature of 19°C (66°F), this humidity feels like a heavy blanket wrapping around you, making travel feel more sluggish and muggy, yet there's a refreshing coolness in the air that invites you to explore.

May Average Humidity in Sasayama

This chart illustrates the average monthly humidity levels in Sasayama, 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 Sasayama is approximately 83%, 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 Sasayama

In Sasayama 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 Sasayama.

Maximum UV Index Levels in Sasayama for May

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

Data source: Sasayama 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 Sasayama Compares to Other Months

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

This table compares monthly weather conditions in Sasayama, 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 (40°F)	46 mm (1.8 inches)	82%	moderate
February Weather	5°C (41°F)	59 mm (2.3 inches)	79%	high
March Weather	9°C (49°F)	111 mm (4.4 inches)	74%	very high
April Weather	13°C (56°F)	141 mm (5.6 inches)	76%	very high
May Weather	19°C (66°F)	140 mm (5.5 inches)	83%	extreme
June Weather	22°C (72°F)	147 mm (5.8 inches)	87%	extreme
July Weather	26°C (79°F)	327 mm (12.9 inches)	93%	extreme
August Weather	28°C (82°F)	223 mm (8.8 inches)	91%	extreme
September Weather	23°C (75°F)	205 mm (8.1 inches)	87%	very high
October Weather	18°C (65°F)	230 mm (9.1 inches)	85%	high
November Weather	12°C (54°F)	43 mm (1.7 inches)	83%	moderate
December Weather	6°C (44°F)	60 mm (2.4 inches)	83%	moderate