午前6時45分現在、斜里岳山頂は曇り、気温8.9℃で体感は5.6℃。山麓との気温差は約5℃。風は穏やかだが、日中を通して山頂は山麓より気温が低く、特に午後は風が強まる傾向にある。正午頃には山頂付近で突風が15m/sを超える可能性があり、この際の体感気温は氷点下まで低下する。新道(稜線)での行動は防風対策を徹底すること。
地面コンディションは降水がなく全体的にドライ基調だが、旧道沢ルートは水量が豊富で、連続する滝周辺は濡れた岩や泥濘箇所が多く、滑落のリスクが高い。慎重な足運びが必要となる。アイゼンやチェーンスパイクは不要だが、防風防水の雨具は上下ともに必ず携行すること。休憩時や風の強い場所での体温維持のため、フリースや薄手のダウンジャケットも準備したい。
斜里岳はヒグマの生息地であるため、樹林帯や沢沿いでは熊鈴やクマ対策スプレーが必須装備となる。自動リスク判定では顕著な警戒値は検出されていないが、午後の突風による体感温度の急低下には十分注意し、低体温症を防ぐため休憩を短く、行動食をこまめに摂取すること。夕方以降は快晴となり気温はさらに低下するため、日没前の下山を完了することが望ましい。
北海道
斜里岳
Mt. Shari
2026年5月11日 06:49 更新
新道は穏やか。旧道沢ルートの滑落とヒグマに注意
Mount Shari offers mild conditions. New Route is stable, but Old Route river
現在の気象状況 — Current Conditions
▲ 山頂エリア (Summit)
気温 Temp
+8.9°C
風速 Wind
1.6m/s
S
天候 Weather
☁️ 曇り
体感 Feels Like
+5.6°C
▼ 登山口・山麓エリア (Base)
気温 Temp
+13.7°C
風速 Wind
3.2m/s
SSE
天候 Weather
☁️ 曇り
標高 Altitude
688m
山頂の3時間予報 — Summit Forecast
06:00
+7°C
1.1m/s
SW
💧 0mm
(0%)
09:00
+11°C
1.9m/s
SW
💧 0mm
(0%)
12:00
+13°C
5.2m/s
WSW
💧 0mm
(2%)
15:00
+11°C
3.8m/s
SSW
💧 0mm
(12%)
18:00
+6°C
2.6m/s
SW
💧 0mm
(2%)
21:00
+5°C
3.5m/s
SW
💧 0mm
(0%)
00:00
+4°C
2.7m/s
SW
💧 0mm
(0%)
03:00
+2°C
1.8m/s
WSW
💧 0mm
(0%)
気象分析 — Analysis Report
日本語
コンディション概ね良好 — 通常の山岳安全対策を実施すること
English
Conditions generally good — Conduct standard mountain safety measures
As of 6:45 AM, Mount Shari's summit is cloudy with a temperature of 8.9°C, feeling like 5.6°C. There is approximately a 5°C difference between the summit and the base. While winds are calm this morning, they are expected to strengthen in the afternoon. Around noon, gusts exceeding 15 m/s are possible near the summit, which could drop the perceived temperature below freezing. Those using the New Route (Shindo) along the ridge must be prepared for strong winds with appropriate windproof layers.
Ground conditions are generally dry due to no precipitation. However, the Old Route (Kyudo) river sections, particularly around the continuous waterfalls, will have abundant water flow, leading to slippery rocks and muddy areas, increasing the risk of falls. Extreme caution is advised on these sections. Crampons or microspikes are not necessary, but full windproof and waterproof rain gear is essential. A fleece or light down jacket should also be carried for warmth during breaks or in windy spots to prevent hypothermia.
Mount Shari is a known habitat for Hokkaido brown bears (Higuma), so bear bells and bear spray are mandatory equipment for any activity in forested or riverside areas. Although no significant alerts were detected by the automated risk assessment, be vigilant for rapid drops in perceived temperature due to afternoon gusts. To prevent hypothermia, keep breaks short and consume snacks frequently. Conditions will clear up by evening, but temperatures will drop further, making it advisable to complete your descent before sunset.
Ground conditions are generally dry due to no precipitation. However, the Old Route (Kyudo) river sections, particularly around the continuous waterfalls, will have abundant water flow, leading to slippery rocks and muddy areas, increasing the risk of falls. Extreme caution is advised on these sections. Crampons or microspikes are not necessary, but full windproof and waterproof rain gear is essential. A fleece or light down jacket should also be carried for warmth during breaks or in windy spots to prevent hypothermia.
Mount Shari is a known habitat for Hokkaido brown bears (Higuma), so bear bells and bear spray are mandatory equipment for any activity in forested or riverside areas. Although no significant alerts were detected by the automated risk assessment, be vigilant for rapid drops in perceived temperature due to afternoon gusts. To prevent hypothermia, keep breaks short and consume snacks frequently. Conditions will clear up by evening, but temperatures will drop further, making it advisable to complete your descent before sunset.
山岳ガイド — Mountain Guide
概要 Overview
北海道斜里郡清里町に位置する標高1,547mの百名山。オホーツク海に裾野を伸ばす独立峰の山容から「斜里富士」とも呼ばれる、知床エリアを代表する秀峰。
特徴・地形 Features
沢沿いに登る旧道(連続する滝の景観)と、稜線をたどる新道のループルートが特徴。山頂稜線は森林限界を超え、北海道らしい広大なパノラマが広がる。
ベストシーズン Best Season
7月〜9月中旬。沢ルートは増水・滑滝注意。残雪期はピッケル・アイゼン要。
主要ルート Main Routes
清岳荘起点・旧道〜山頂〜新道のループ(最一般的)、三井コース。
注意点・危険箇所 Cautions
旧道沢ルートは滝の連続で滑落事故が多発。沢の急増水時は通過不可。ヒグマ生息地。
アクセス Access
JR釧網本線清里町駅から車・タクシーで清岳荘へ。バス便はなし。
※ 本ガイド情報は一般的な参考資料であり、最新の登山道状況・規制情報は各自治体・登山口の公式情報をご確認ください。