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Koyasan Weather in May

In Koyasan, May brings high daytime temperatures around 23°C (73°F), with nights cooling to 13°C (55°F). Expect quite a bit of rainfall this month.

Rainfall in Koyasan in May

Historically, approximately 16 days this month are expected to have rain, averaging 169 mm (6.7 in). Wet weather is a regular and significant part of this month. Frequent days of rain combined with high totals means proper waterproofs are worth packing.

Temperature in Koyasan in May

If you're visiting Koyasan in May, expect highs of 23°C (73°F) and overnight lows around 13°C (55°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. At 13°C (55°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

Sunshine in Koyasan in May

The city usually sees around 203 hours of sunlight, indicating many sunny days — a great month for sightseeing.

If you favor pleasant temperatures and minimal rainfall, May is one of the best months to visit Koyasan.

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Check the conditions for any month of the year.

For a detailed overview over the year and the best time to visit Japan, check out our Koyasan's climate page.

Koyasan Temperature in May

Min TemperatureMin Temperature 13°C (55°F)  
Max TemperatureMax Temperature 23°C (73°F)  
Chance of RainChance of Rain 52%  
PrecipitationPrecipitation 169 mm (6.7 in)  
Rainy daysRainy days 16 days  
HumidityHumidity 68% *  
SunshineSunshine 203 hours *  
Percentage SunshinePercentage Sunshine *  
* Data from: Wakayama, Japan (37 KM, 23 Miles).

Best Places in Japan in May

Find out more about the weather in Japan and which places have the best travel conditions in this month. See all of Japan in May →

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

What to Wear in Koyasan in May

Comfortable temperatures call for an easy wardrobe in May. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. It's going to pour! Pack a good poncho and prepare for very wet conditions. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Koyasan in May

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming
8/10
Camping
6/10

Select a Month

Check the conditions for any month of the year.

For a detailed overview over the year and the best time to visit Japan, check out our Koyasan's climate page.

More climate data for Koyasan