Region
Gunma Live Cameras in Japan — 5 official webcams
Mount Asama from two angles, Mount Kusatsu-Shirane, the Karafuki fumaroles at Manza, and Lake Ozenuma. Volcanoes cluster here, and so do the cameras where you can actually see steam rising.
5 cameras in Gunma
All 5 are still images. Tap one to open it in the camera list.
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Sample August 2026
Mount Asama from Tsumagoi
Tsumagoi, Gunma · Volcano
An active volcano with long, gentle flanks. The plume and the snow near the summit tell you both the season and how active it is.
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Sample August 2026
Lake Ozenuma
Gunma / Fukushima · Nature
A quiet lake surrounded by high moorland. With Mount Hiuchi behind it, the light on the water changes colour sharply at dawn and dusk.
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Sample August 2026
Manza Karafuki
Tsumagoi, Gunma · Volcano
A spot midway up Kusatsu-Shirane where steam vents continuously from the hillside. Raw enough that you can almost smell the sulphur.
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Sample August 2026
Mount Kusatsu-Shirane
Gunma · Volcano
Holds Yugama, a strongly acidic crater lake. A sudden eruption on the Motoshirane side in 2018 led to closer monitoring.
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Sample August 2026
Mount Asama
Gunma / Nagano border · Volcano
One of the most frequently erupting volcanoes in Japan. Around the camera at Onioshi, lava from the 1783 eruption is still lying where it stopped.
When to watch
Karafuki, at Manza, is a bare slope with white steam venting from it continuously. Steam shows up whiter and thicker the colder and damper the air, so a winter morning is when it reads most clearly; on a summer afternoon the same volume can be almost invisible.
Lake Ozenuma straddles the Gunma–Fukushima border at about 1,660 m. Skunk cabbage flowers from late May into June, and the marsh grasses turn from late September into early October. The roads close for winter, leaving only a lake buried in snow.
Mount Asama has two cameras: a scenery camera from Tsumagoi and a Meteorological Agency monitoring camera. Cloud settles on the summit easily, so mornings tend to be clearer.
Closer looks at cameras here
Agencies publishing the cameras on this page
- Japan Meteorological Agency — volcano surveillance cameras (PDL 1.0) — Official site
- Ministry of the Environment — Internet Nature Institute (PDL 1.0) — Official site
The footage belongs to each agency. This site is an unofficial guide, and each sample frame was copied once per camera under that agency's terms of use.