今日の十勝岳山頂は弱い霧雨が続き、視程は1キロメートル未満の濃霧に包まれている。気温は5.5℃、風速1.19m/sだが、体感は3.5℃と低い。山麓との気温差は7度以上あり、標高を上げるごとに冷え込みが増している。
日中を通して霧雨が続き、正午には降水確率100%となる。15時頃には一時的に弱いにわか雨となる見込みだ。気温は一時7.8℃まで上がるが、北西からの突風は最大8m/sに達し、体感気温は氷点下まで冷え込む可能性がある。この状況下では、濡れることによる低体温症のリスクが極めて高い。
地面は霧雨で濡れており、望岳台コースや新噴火口周辺の岩稜帯は滑りやすくなっている。泥濘箇所も多いだろう。防水透湿性のアウター上下は必須。ベースレイヤーは速乾性のものを着用し、ミッドレイヤーには保温性の高いフリースや薄手ダウンを重ねること。予備の防寒着も必ず携行したい。
視界不良と低温、濡れた地面は行動を著しく困難にする。特に大正噴火火口付近など開けた場所では、視界の悪さからルートを見失う可能性も高まる。今日の行動は極めて慎重な判断が必要だ。無理な登高は避け、少しでも体調や天候に異変を感じたら、躊躇なく引き返す勇気を持つこと。
北海道
十勝岳
Mt. Tokachi
2026年6月28日 07:02 更新
濃霧と霧雨の一日。濡れた足元に注意
Poor visibility and light rain persist. Wet and slippery conditions on trails.
現在の気象状況 — Current Conditions
▲ 山頂エリア (Summit)
気温 Temp
+5.5°C
風速 Wind
1.2m/s
WNW
天候 Weather
🌦️ 弱い霧雨
体感 Feels Like
+3.5°C
▼ 登山口・山麓エリア (Base)
気温 Temp
+12.7°C
風速 Wind
1.5m/s
NW
天候 Weather
☁️ 曇り
標高 Altitude
923m
山頂の3時間予報 — Summit Forecast
09:00
+6°C
1.5m/s
WNW
💧 0.4mm
(84%)
12:00
+8°C
2.3m/s
NW
💧 0.6mm
(100%)
15:00
+6°C
2.4m/s
NW
💧 1.3mm
(100%)
18:00
+5°C
1.1m/s
NW
💧 0.8mm
(100%)
21:00
+4°C
0.3m/s
S
💧 0.1mm
(55%)
00:00
+4°C
0.8m/s
W
💧 0mm
(35%)
03:00
+3°C
1.2m/s
NW
💧 0mm
(43%)
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 at Tokachidake summit, light drizzle persists, with visibility reduced to less than 1 kilometer by dense fog. The temperature is 5.5 degrees Celsius, with a wind speed of 1.19 meters per second, making the felt temperature a chilly 3.5 degrees Celsius. The temperature difference from the base is over 7 degrees, indicating a significant drop as you ascend.
Light rain is expected to continue throughout the day, with a 100% chance of precipitation by noon. Around 3 PM, it may briefly turn into light showers. Although the temperature might temporarily rise to 7.8 degrees Celsius, gusts from the northwest could reach up to 8 meters per second, potentially lowering the felt temperature below freezing. Under these conditions, the risk of hypothermia due to getting wet is extremely high.
The ground is wet from the drizzle, and rocky sections along the Bogakudai Course and near the Shin Funka-ko (new crater) will be slippery. Muddy areas are also likely. Waterproof and breathable outer layers are essential. Wear a quick-drying base layer and layer with a warm fleece or light down for the mid-layer. Always carry spare warm clothing.
Poor visibility, low temperatures, and wet ground make travel extremely difficult. Especially in open areas like near the Taisho Funka-ko (Taisho Crater), there is a high risk of losing the route due to poor visibility. Today's mountain activity requires extremely careful judgment. Avoid overextending yourself, and if you notice any changes in your condition or the weather, do not hesitate to turn back.
Light rain is expected to continue throughout the day, with a 100% chance of precipitation by noon. Around 3 PM, it may briefly turn into light showers. Although the temperature might temporarily rise to 7.8 degrees Celsius, gusts from the northwest could reach up to 8 meters per second, potentially lowering the felt temperature below freezing. Under these conditions, the risk of hypothermia due to getting wet is extremely high.
The ground is wet from the drizzle, and rocky sections along the Bogakudai Course and near the Shin Funka-ko (new crater) will be slippery. Muddy areas are also likely. Waterproof and breathable outer layers are essential. Wear a quick-drying base layer and layer with a warm fleece or light down for the mid-layer. Always carry spare warm clothing.
Poor visibility, low temperatures, and wet ground make travel extremely difficult. Especially in open areas like near the Taisho Funka-ko (Taisho Crater), there is a high risk of losing the route due to poor visibility. Today's mountain activity requires extremely careful judgment. Avoid overextending yourself, and if you notice any changes in your condition or the weather, do not hesitate to turn back.
山岳ガイド — Mountain Guide
概要 Overview
北海道空知郡上富良野町・美瑛町・新得町にまたがる標高2,077mの大雪山系の活火山。十勝連峰の主峰で、噴煙を上げる山頂部と荒涼とした火山地形が独特の景観を作り出している百名山。
特徴・地形 Features
山頂直下には大正噴火の火口・新噴火口が点在し、現在も活発な噴気活動が続く。富良野盆地を見下ろす広大な裾野とお花畑も魅力。
ベストシーズン Best Season
7月〜9月。噴火警戒レベルの常時確認が必須。残雪期は山スキーフィールドとしても人気。
主要ルート Main Routes
望岳台コース(最一般的)、新得コース、十勝連峰縦走(美瑛岳〜トムラウシ)。
注意点・危険箇所 Cautions
噴火警戒レベル次第で登山道立入規制。火山ガス濃度の高い区間あり。森林限界以上の強風・低体温症リスク。
アクセス Access
JR富良野線美瑛駅・上富良野駅から車・タクシー。望岳台までマイカーアクセス可。
※ 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。