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.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

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 Temperature 13°C (55°F)  

Max Temperature 23°C (73°F)  

Chance of Rain 52%  

Precipitation 169 mm (6.7 in)  

Rainy days 16 days  

Humidity 68% *  

Sunshine 203 hours *  

Percentage Sunshine *  

* Data from: Wakayama, Japan (37 KM, 23 Miles).

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.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

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

Temperature Rainfall Sunshine Humidity

See the full Koyasan climate overview or explore weather in Japan.