May weather forecastYamagata, Japan
May weather for Yamagata, Japan: In Yamagata, Japan, snow does not fall in May through October. In Yamagata, Japan, snow does not fall in May through October.
May
Weather in May
May presents itself as a truly spring month in Yamagata. The thawed land flourishes under moderate rainfall, greenery is vibrant, and temperatures are comfortably temperate. Additionally, days stretch even longer, lasting for 14.2 daylight hours. A unique feature of May’s weather conditions is the highest UV index of the year at 8. These sunny, warm, and extended days distinguish it markedly from the approaching hot and rainy season in June.Temperature
The shift into May brings an increase in the average high-temperature, moving from a comfortable 16°C (60.8°F) in April to a pleasant 22°C (71.6°F). Yamagata experiences a drastic reduction from day temperatures to an average low of 10°C (50°F) in May.Rainfall
In Yamagata, in May, it is raining for 17 days, with typically 81mm (3.19") of accumulated precipitation. Throughout the year, there are 260 rainfall days, and 1125mm (44.29") of precipitation is accumulated.Snowfall
In Yamagata, Japan, snow does not fall in May through October.Daylight
In Yamagata, the average length of the day in May is 14h and 15min.On the first day of the month, sunrise is at 04:41 and sunset at 18:29. On the last day of May, sunrise is at 04:17 and sunset at 18:55 JST.
Sunshine
May has the most sunshine of the year in Yamagata, with an average of 7h of sunshine.UV index
In Yamagata, Japan, the average daily maximum UV index in May is 8. A UV Index estimate of 8 to 10 represents a very high threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: A daily high UV index of 8 in May leads to these guidelines:
Remember to safeguard yourself. Rapid damage can occur to skin and eyes without protection. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Yamagata, Japan
- Average high temperature in May: 22°C
The warmest month (with the highest average high temperature) is August (30°C).
The month with the lowest average high temperature is January (3°C).
- Average low temperature in May: 10°C
The month with the highest average low temperature is August (20°C).
The coldest months (with the lowest average low temperature) are January and February (-4°C).
Average rainfall in May
Yamagata, Japan
- Average rainfall in May: 81mm
The wettest month (with the highest rainfall) is August (149mm).
The driest month (with the least rainfall) is March (67mm).
Average rainfall days in May
Yamagata, Japan
- Average rainfall days in May: 17 days
The month with the highest number of rainy days is January (29 days).
The month with the least rainy days is May (17 days).
Average snowfall in May
Yamagata, Japan
- Average snowfall in May: 0mm
The month with the highest snowfall is January (1630mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average daylight in May /
Average sunshine in May
Yamagata, Japan
- Average daylight in May: 14h and 12min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in May: 7h
The month with the most sunshine is May (Average sunshine: 7h).
The month with the least sunshine is December (Average sunshine: 3h).
Average UV index in May
Yamagata, Japan
- Average UV index in May: 8
The month with the highest UV index is July (UV index 10).
The months with the lowest UV index are January and December (UV index 2).





