Koya-san weather in September
Mild and comfortable, with regular rainfall. Average highs of 23°C and lows of 16°C, with around 17 rainy days expected throughout the month.
While September isn't our top-rated month for Koya-san, it has its own appeal — typically lower prices, fewer crowds, and a more local feel.
Average high
23°C
Average low
16°C
Rainy days
17 days
Best months to visit
Year-round
What to do in Koya-san in September
Whatever the weather, Koya-san rewards curious visitors. Here are some of the best ways to spend your time:
Overnight monastery lodging and meditation
Early morning prayer sessions with monks
Temple tour of 117 monasteries
Mountain hiking among temple grounds
Vegetarian Buddhist meal preparations
Cemetery lantern walks at dusk
What to pack for September
Light layers work well — T-shirts and shorts for the day, a light jacket for evenings. Comfortable walking shoes are a must. Bring a compact umbrella just in case.
Browse other months
January
3C
Cold, with some rainy days.
February
5C
Cold, with some rainy days.
March
10C
Cool, with some rainy days.
April
15C
Cool, with some rainy days.
May
19C
Mild and comfortable, with some rainy days.
June
22C
Mild and comfortable, with regular rainfall.
July
26C
Warm and pleasant, with regular rainfall.
August
27C
Warm and pleasant, with regular rainfall.
September (you are here)
23C
Mild and comfortable, with regular rainfall.
October
18C
Mild and comfortable, with some rainy days.
November
13C
Cool, with some rainy days.
December
6C
Cold, with some rainy days.
Book your September trip to Koya-san
Find hotels, tours and experiences for the perfect escape.
