May Weather in Tosa, Japan

Last updated: August 23, 2025

In Tosa, Japan, the average temperature in May hovers around 19°C (67°F). Expect a minimum of 9°C (48°F) and a maximum of 27°C (81°F) throughout the month. With an average precipitation of 231 mm (9.1 in) over approximately 12 days, be prepared for some rainy spells. The climate is further characterized by a high average humidity of 82%, ensuring you'll feel the warmth in the air.

May Temperature in Tosa

In May in Tosa, the average temperature is 19°C (67°F), with maximums reaching 27°C (81°F) and minimums dropping to as low as 9°C (48°F). This pleasant climate makes Tosa an ideal destination for travelers seeking mild weather and outdoor activities.

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

The chart illustrates May temperature patterns in Tosa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tosa, May typically has an average temperature of 19°C (67°F), with highs reaching up to 27°C (81°F) and lows dropping to around 9°C (48°F).

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

May Precipitation in Tosa

In Tosa in May, the total precipitation amount is 231 mm (9.1 in), which falls over the course of 12 days.

May Precipitation Trends in Tosa

The chart displays monthly precipitation patterns in Tosa, 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 Tosa, May typically receives around 231 mm (9.1 inches) of precipitation spread over approximately 12 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 Tosa

In Tosa in May humidity is 82%. With an average temperature of 19°C (67°F), this humidity feels like a heavy blanket wrapping around you, making each step feel sluggish and the air thick as you explore the sights.

May Average Humidity in Tosa

This chart illustrates the average monthly humidity levels in Tosa, 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 Tosa is approximately 82%, 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 Tosa

In Tosa 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 Tosa.

Maximum UV Index Levels in Tosa for May

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

Data source: Tosa 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 Tosa Compares to Other Months

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

This table compares monthly weather conditions in Tosa, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (45°F)	69 mm (2.7 inches)	74%	moderate
February Weather	8°C (46°F)	100 mm (3.9 inches)	70%	high
March Weather	12°C (53°F)	179 mm (7.1 inches)	70%	very high
April Weather	15°C (59°F)	203 mm (8.0 inches)	76%	extreme
May Weather	19°C (67°F)	231 mm (9.1 inches)	82%	extreme
June Weather	22°C (72°F)	314 mm (12.4 inches)	86%	extreme
July Weather	26°C (79°F)	579 mm (22.8 inches)	91%	extreme
August Weather	27°C (81°F)	337 mm (13.3 inches)	88%	extreme
September Weather	25°C (76°F)	348 mm (13.7 inches)	85%	very high
October Weather	20°C (68°F)	337 mm (13.3 inches)	82%	high
November Weather	14°C (58°F)	81 mm (3.2 inches)	79%	high
December Weather	9°C (49°F)	80 mm (3.1 inches)	77%	moderate