今日の斜里岳は日中を通して曇り。山頂現況は気温13.5℃、体感13.1℃。山麓との気温差は5℃あり、稜線に近づくほど冷涼となる。日中の最高気温は16.4℃まで上がる見込み。風は弱く、登山には比較的穏やかな気象条件が続く。ただし湿度が高く、降水こそないが地面は終日ウェット状態が予想される。
特に清岳荘からのループルート、旧道沢ルートは連続する滝を通過する箇所が多く、湿った岩や苔で滑りやすい。慎重な足運びが求められる。沢筋では急な増水リスクは低いが、夜間にかけて降水確率が上昇するため、早めの行動を推奨する。ヒグマの生息地でもあるため、単独行動は避け、鈴やラジオで存在を知らせること。
装備は速乾性のベースレイヤーにフリースなどのミッドレイヤー、防風防水のアウターが必須。雨具は必ず携行すること。アイゼンやチェーンスパイクは不要。日中の体感気温から低体温症のリスクは低いが、休憩時の冷え込みには注意が必要だ。風速も日中最大で突風7.1m/s程度と行動に支障はない。
夕方以降は気温が10℃台まで下がり、夜中から翌早朝にかけて降水確率が31%から59%に上昇する。行動が長引く場合は、防寒着の追加と雨具の着用を怠らないこと。視程7.5kmは日中維持されるが、自動リスク判定の通り、視程や気温変化の推移を継続的に確認し、天候変化に注意を払うこと。
北海道
斜里岳
Mt. Shari
2026年7月9日 07:05 更新
沢筋は足元注意。湿潤な路面で滑落リスク高まる
Cloudy with mild temperatures. Expect wet and muddy trails, especially in Old
現在の気象状況 — Current Conditions
▲ 山頂エリア (Summit)
気温 Temp
+13.5°C
風速 Wind
1m/s
SSE
天候 Weather
☁️ 曇り
体感 Feels Like
+13.1°C
▼ 登山口・山麓エリア (Base)
気温 Temp
+18.5°C
風速 Wind
1.9m/s
S
天候 Weather
☁️ 曇り
標高 Altitude
688m
山頂の3時間予報 — Summit Forecast
09:00
+15°C
1.6m/s
S
💧 0mm
(0%)
12:00
+16°C
2.3m/s
S
💧 0mm
(10%)
15:00
+16°C
2.1m/s
S
💧 0mm
(0%)
18:00
+12°C
3m/s
S
💧 0mm
(2%)
21:00
+10°C
2.4m/s
S
💧 0mm
(10%)
00:00
+10°C
2.3m/s
S
💧 0mm
(31%)
03:00
+10°C
2m/s
S
💧 0mm
(59%)
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
Today on Mt. Shari, cloudy conditions are expected throughout the day. The current summit temperature is 13.5℃, feeling like 13.1℃. There is a 5℃ temperature difference between the summit and the base, indicating cooler conditions as elevation increases. The daytime high is forecast to reach 16.4℃. Winds are light, presenting relatively calm weather for climbing. However, high humidity suggests wet ground conditions will persist all day, despite no precipitation.
The Old Route, part of the loop from Kiyosato Hut, involves numerous waterfalls and can be particularly slippery due to wet rocks and moss. Careful foot placement is crucial. While there is no immediate risk of flash floods in the stream areas, the probability of precipitation increases overnight, so early action is advised. As this is a brown bear habitat, avoid solo travel and make your presence known with a bell or radio.
Essential gear includes a quick-drying base layer, a mid-layer such as fleece, and a windproof and waterproof outer shell. Rain gear is mandatory. Crampons or microspikes are not needed. Hypothermia risk is low during the day given the ambient temperatures, but be mindful of cooling during breaks. Wind gusts will reach a maximum of 7.1m/s during the day, which should not impede movement.
Temperatures will drop to around 10℃ in the evening, with precipitation probability increasing from 31% to 59% from midnight into early morning. If your activity extends, do not neglect extra insulation and rain gear. Visibility of 7.5km is expected to hold during the day, but as the automated risk assessment indicates, continuously monitor visibility and temperature changes for any shifts in weather.
The Old Route, part of the loop from Kiyosato Hut, involves numerous waterfalls and can be particularly slippery due to wet rocks and moss. Careful foot placement is crucial. While there is no immediate risk of flash floods in the stream areas, the probability of precipitation increases overnight, so early action is advised. As this is a brown bear habitat, avoid solo travel and make your presence known with a bell or radio.
Essential gear includes a quick-drying base layer, a mid-layer such as fleece, and a windproof and waterproof outer shell. Rain gear is mandatory. Crampons or microspikes are not needed. Hypothermia risk is low during the day given the ambient temperatures, but be mindful of cooling during breaks. Wind gusts will reach a maximum of 7.1m/s during the day, which should not impede movement.
Temperatures will drop to around 10℃ in the evening, with precipitation probability increasing from 31% to 59% from midnight into early morning. If your activity extends, do not neglect extra insulation and rain gear. Visibility of 7.5km is expected to hold during the day, but as the automated risk assessment indicates, continuously monitor visibility and temperature changes for any shifts in weather.
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。