# Autumn Leaves at Naguri Lake and Arima Gorge
_名栗湖 有間渓谷の紅葉_

- **When:** Sun, Nov 1, 2026 – Mon, Nov 30, 2026 (JST)
- **Where:** Naguri Lake, Arima Valley — Shimonaguri, Hannō-shi, Saitama
- **Price:** Free entry
- **Category:** Nature & Seasons
- **Official site:** https://hanno-tourism.jp/
- **On Tokyo Events:** https://eventstokyo.com/en/events/autumn-leaves-at-naguri-lake-and-arima-gorge

![](https://hanno-tourism.jp/wp/wp-content/uploads/2024/05/ogp.jpg)

Naguri Lake is a reservoir located in the Naguri area between Chichibu and Hannō cities in Saitama Prefecture. The area features well-maintained roads encircling the lake, allowing visitors to enjoy outdoor activities such as canoeing and fishing surrounded by nature. Along the upstream Arima Gorge, visitors can stroll while taking in the clear streams and stunning autumn foliage. Typically, leaves on trees such as maples and cherry trees begin to change color in early November, with the peak viewing season lasting until late November.

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Source: Tokyo Events — https://eventstokyo.com/en/events/autumn-leaves-at-naguri-lake-and-arima-gorge