山岳レポート – 日本山岳気象レポート

Latest Report — 2026-07-28 07:07 JST

十勝岳：午前は穏やか。午後はガスと霧雨に注意

今朝の十勝岳山頂は快晴、視程は20km以上と良好だ。気温は9.3℃、体感は8.1℃と涼しい。山麓との気温差は約7.6℃。午前中は穏やかなコンディションが続くが、正午にかけて曇りとなり、午後15時頃からは弱い霧雨が予想される。降水量はわずかだが、濡れることで体感温度が低下する。地面は現状ドライだが、午後には霧雨で岩場や土壌が湿り、滑りやすくなる箇所が出るだろう。アイゼンやチェーンスパイクは不要。雨具上下は必ず携行し、防寒対策としてフリースなどのミッドレイヤー、手袋、帽子も準備すること。特に大正噴火火口や新噴火口周辺は火山ガス濃度が高い区間がある。今日の風は弱くガスが滞留しやすい可能性があるため、これらのエリアでの長時間の滞在は避け、体調の変化に注意を払うこと。雷のリスクは低い。風も最大突風7.2m/s程度と弱く、強風による行動制限はない。ただし、午後からの霧雨で濡れると体感は下がるため、低体温症のリスクは皆無ではない。早めの行動開始で、天候悪化前の下山を推奨する。

今日の詳細レポートを読む →

81 件

2026 / July

24 reports

Mt. Tokachi — 十勝岳

午前は穏やか。午後はガスと霧雨に注意

Mild Morning on Tokachidake. Expect Light Rain in Afternoon. Be Aware of

Mt. Tokachi — 十勝岳

霧雨に濡れる登山道低体温症に厳重な備えを

Persistent Drizzle and Low Temperatures. Prepare for Wet and Cold Conditions.

Mt. Tokachi — 十勝岳

十勝岳、霧雨の湿潤。稜線は視界不良

Chilly and Damp Conditions on Tokachidake. Expect Poor Visibility and Wet

Mt. Tokachi — 十勝岳

十勝岳日中霧雨。視界不良に注意

Light drizzle and reduced visibility expected today. Navigate carefully near

Mt. Tokachi — 十勝岳

十勝岳午後から霧雨。滑りやすい足元に注意

Tokachidake: Clear start to the day. Prepare for light afternoon drizzle.

Mt. Tokachi — 十勝岳

曇天と弱い霧雨続く。濡れた登山道に注意

Cloudy and Light Drizzle on Tokachidake. Expect Wet Trails and Moderate

Mt. Tokachi — 十勝岳

十勝岳快晴視界良好穏やかな一日

Clear Skies and Mild Winds for Tenkachi-dake Ascent. Anticipate Evening Chill.

Mt. Tokachi — 十勝岳

十勝岳湿潤な山肌視界回復は夕刻

Light Drizzle and Humid Conditions. Wet Terrain on Summit. Clearer Skies by

Mt. Tokachi — 十勝岳

霧雨が続き視界不良濡れた岩稜に注意

Misty conditions and light rain all day. Wet trails and limited visibility near

Mt. Tokachi — 十勝岳

望岳台コース快適。夕方冷え込み注意。

Gentle Winds and Clear Views on Tokachidake. Enjoyable Conditions for Day

Mt. Tokachi — 十勝岳

霧雨に濡れる望岳台午後には青空

Wet conditions persist until midday. Expect clear skies and calm winds for

Mt. Tokachi — 十勝岳

ガス深く視界不良。濡れる覚悟で行動せよ

Cloudy Summit with Poor Visibility. Light Drizzle Expected. Prepare for Wet

Mt. Tokachi — 十勝岳

霧雨とガスに包まれる十勝岳。濡れた足元に注意

Persistent Drizzle and Low Visibility. Trails Wet and Slippery. Navigate

Mt. Tokachi — 十勝岳

濡れた岩稜視界不良。慎重な行動を

Misty Conditions and Slick Trails. Expect Rain and Reduced Sightlines.

Mt. Tokachi — 十勝岳

午後から雷雨と視界不良。稜線は危険

Persistent Rain and Afternoon Thunderstorms. Avoid Exposed Ridges.

Mt. Tokachi — 十勝岳

雨とガス濃く稜線視界不良濡れる登山道

Wet and Foggy Conditions Persist. Limited Visibility on Exposed Ridges.

Mt. Tokachi — 十勝岳

穏やかな曇り空が続く。夜半には雨。

Mild Cloudy Conditions for Day Ascent. Expect Wet Ground by Evening Rain.

Mt. Tokachi — 十勝岳

日中霧雨に濡れる十勝岳。視界不良に注意

Misty Rain and Poor Visibility on Tokachidake. Expect Wet Ground and Cool

Mt. Tokachi — 十勝岳

十勝岳午前は好天午後霧雨に転じる

Stable morning conditions on Tokachidake. Expect increasing cloudiness and

Mt. Tokachi — 十勝岳

穏やかな一日。望岳台コースは快適

Calm Summer Ascent on Tokachi-dake. Clear Visibility. Enjoy Gentle Trails.

Mt. Tokachi — 十勝岳

十勝岳穏やかな夏山。望岳台コース快適

Pleasant Summer Ascent on Tokachidake. Expect Dry Paths, Afternoon Cloud Build.

Mt. Tokachi — 十勝岳

穏やかな山頂稜線。望岳台コースは好条件

Mild Conditions on Tokachidake Summit. Prepare for Afternoon Drizzle and

Mt. Tokachi — 十勝岳

十勝岳視界回復へ午後は穏やか

Misty morning on volcanic trails. Expect improving visibility and mild winds

Mt. Tokachi — 十勝岳

穏やかな山行も午後霧雨に警戒

Clear Morning Ascent. Light Rain Possible in Afternoon. Prepare for Ridge Winds.

2026 / June

30 reports

Mt. Tokachi — 十勝岳

望岳台コース穏やか。活火山の夏山を楽しめ

Mild conditions on Tokachidake. Clear visibility. Enjoy stable summer hike.

Mt. Tokachi — 十勝岳

冷たい霧雨とガス、望岳台コースは足元注意

Light Drizzle and Low Visibility on Tokachidake. Expect Wet, Muddy Trails.

Mt. Tokachi — 十勝岳

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.

Mt. Tokachi — 十勝岳

霧雨と視界不良の山頂帯午後は雷雨

Persistent Drizzle and Poor Visibility. Afternoon Thunderstorms Highly Probable.

Mt. Tokachi — 十勝岳

ガスに包まれ視界不良。雨具必携の一日

Limited visibility and cool conditions persist. Prepare for afternoon rain.

Mt. Tokachi — 十勝岳

快晴無風の稜線歩き。大正火口周遊も快適

Clear Skies and Mild Winds. Enjoy Exposed Ridges Before Afternoon Clouds.

Mt. Tokachi — 十勝岳

十勝岳火口見下ろす快晴の稜線

Excellent Visibility on Tokachidake. Expect Mild Winds and Dry Hiking.

Mt. Tokachi — 十勝岳

霧雨の山頂濡れる岩場に足元注意

Persistent Drizzle and Low Temperatures. Expect Wet and Slippery Conditions on

Mt. Tokachi — 十勝岳

霧雨と低温続く十勝岳。望岳台コースは万全の雨具で

Misty conditions developing on Tokachidake. Low temperatures require full

Mt. Tokachi — 十勝岳

活火山十勝岳穏やかな曇天。視界と火山ガスに警戒

Cloudy conditions with moderate visibility. Be aware of volcanic gas zones.

Mt. Tokachi — 十勝岳

霧雨が続き足元濡れる。滑落注意

Persistent Light Rain and Low Temperatures. Expect Wet and Slippery Trails.

Mt. Tokachi — 十勝岳

山頂は霧雨に包まれ視界不良に注意

Light drizzle and limited visibility on Tokachidake. Expect wet conditions and

Mt. Tokachi — 十勝岳

日中は穏やか。火山地形を慎重に歩け

Mild Weather for Ascent. Enjoy Clear Views from Volcanic Summit.

Mt. Tokachi — 十勝岳

十勝岳、午前中は風穏やか。午後の曇天に注意

Mild Cloudy Conditions on Tokachidake. Monitor Afternoon Shower Risk, Enjoy

Mt. Tokachi — 十勝岳

十勝岳日中快晴。稜線は穏やか登高快調

Tokachidake Clearing to Sunny. Stable Conditions for Ascent.

Mt. Tokachi — 十勝岳

望岳台コースはウェット。午後から霧雨に注意

Cloudy Morning on Tokachidake. Expect Wet Trails and Light Rain by Afternoon.

Mt. Tokachi — 十勝岳

午後は霧雨と風。滑りやすい足元に注意

Morning clear, then light drizzle and strengthening winds. Expect wet, slippery

Mt. Tokachi — 十勝岳

雨と冷え込み続く。午後は泥濘化、滑りやすい岩場に注意

Wet Trails and Cool Temperatures. Prepare for Afternoon Rain. Volcanic Gas

Mt. Tokachi — 十勝岳

日中は霧雨と低温。視界不良に注意

Persistent Drizzle and Limited Visibility. Prepare for Chilly Wet Ascent.

Mt. Tokachi — 十勝岳

十勝岳穏やかな風午後霧雨注意

Calm Winds on Tokachi-dake Morning. Expect Light Rain from Mid-Afternoon.

Mt. Tokachi — 十勝岳

雨とガスで視界不良低温の十勝岳

Cold Rain and Poor Visibility on Tokachidake Summit. Expect Wet and Muddy

Mt. Tokachi — 十勝岳

日中霧雨と体感氷点下。濡れた岩稜に注意せよ

Persistent Drizzle and Sub-Zero Feels Like Temperature. Expect Wet and Slippery

Mt. Tokachi — 十勝岳

日中霧雨低温。濡れた大正噴火火口は泥濘化

Persistent Drizzle and Low Temperatures. Wet and Muddy Conditions on Exposed

Mt. Tokachi — 十勝岳

霧雨に濡れる稜線体感温度に注意

Current conditions indicate light drizzle and low temperatures. Adequate

Mt. Tokachi — 十勝岳

肌寒い曇天続く。稜線は突風に注意

Cool and Cloudy Conditions on Tokachidake. Gusts Expected on Exposed Ridges.

Mt. Tokachi — 十勝岳

日中は穏やかな曇り。夕方以降は急激な冷え込みに警戒

Mild Cloudy Day. Minimal Wind on Exposed Ridges. Prepare for Evening Chill.

Mt. Tokachi — 十勝岳

霧雨に濡れる登山道。午後は気温低下

Misty conditions with light rain. Expect wet ground, prepare for evening chill.

Mt. Tokachi — 十勝岳

十勝岳は初夏の日和。夜間は急激な気温低下

Gentle Breezes on Tokachidake. Carry Extra Layers for Evening Chill.

Mt. Tokachi — 十勝岳

大正火口周辺は岩稜露出。穏やかな一日

Clear Views and Mild Winds on Tokachidake. Expect Dry Rock Conditions.

Mt. Tokachi — 十勝岳

十勝岳快晴無風で絶好の登山日和

Clear Skies and Mild Winds on Tokachidake. Excellent Visibility for Summit

2026 / May

27 reports

Mt. Tokachi — 十勝岳

森林限界以上は強風と霧雨

Misty Rain and Strong Gusts on Tenkachi Ridges. Clearing Expected by Midday.

Mt. Tokachi — 十勝岳

霧雨と突風で視界不良。濡れた足元に注意

Zero Visibility and Gusty Winds. Expect Wet, Muddy Trails. Hypothermia Risk

Mt. Tokachi — 十勝岳

雨濡れの稜線と霧。午後は凍結注意

Wet and Foggy Ascent. Freezing Temps and Poor Visibility on Upper Slopes.

Mt. Tokachi — 十勝岳

午後から霧雨。濡れた地面は滑りやすい

Cloudy morning, light rain from afternoon. Expect wet conditions. Limited

Mt. Tokachi — 十勝岳

霧雨と視界不良の山頂。足元は泥濘に注意

Limited Visibility and Wet Conditions on Tokachidake. Prepare for Afternoon

Mt. Tokachi — 十勝岳

日中薄日も風強まる。森林限界以上は注意

Gradual Clearing on Tokachidake. Expect Stronger Gusts Above Tree Line by

Mt. Tokachi — 十勝岳

霧雨と低温続く稜線。望岳台コースは装備万全に

Light Drizzle and Cool Ridge Temperatures. Moderate Visibility. Clearing by

Mt. Tokachi — 十勝岳

曇天の十勝岳。稜線冷え込み、火山ガスに注意

Cloudy and Cold Summit. Hypothermia Risk Present. Volcanic Gas Areas Require

Mt. Tokachi — 十勝岳

十勝岳澄み切った展望。火山ガス区間は注意

Mild Conditions on Tokachidake. Enjoy Clear Views with Caution for Volcanic Gas.

Mt. Tokachi — 十勝岳

穏やかな稜線歩きやすいが午後一時霧雨

Mild Conditions on Tokachidake, Expect Brief Afternoon Drizzle. Prepare for

Mt. Tokachi — 十勝岳

曇天と気温急変に警戒火山ガスに注意

Cloudy summit, no significant snow. Be prepared for rapid temperature drop.

Mt. Tokachi — 十勝岳

霧雨と低温続く。望岳台コースは視界に注意

Persistent Drizzle and Cold Summit. Expect Wet Trails, Strong Winds on Exposed

Mt. Tokachi — 十勝岳

望岳台コース上部冷たい雨風に警戒

Cold Rain and Gusts Expected. Dress Warmly for Exposed Routes.

Mt. Tokachi — 十勝岳

春の気配、稜線は風の通り道。気温急変に備えよ

Spring warmth on lower slopes. Expect variable winds and a sharp evening chill

Mt. Tokachi — 十勝岳

残雪と岩稜が混在。午後は快晴

Tenjaku-dake: Mixed snow and rock conditions. Clear skies by noon. Watch for

Mt. Tokachi — 十勝岳

十勝岳は穏やかな一日。夕方からの気温急降下に備えよ

Mild Daytime Ascent on Tokachidake. Prepare for Sharp Temperature Drop After

Mt. Tokachi — 十勝岳

穏やかな春の十勝岳。残雪と岩稜帯

Mixed conditions on Tokachidake: early spring snow and exposed alpine terrain.

Mt. Tokachi — 十勝岳

残雪の十勝岳。日中穏やかだが夜間冷え込み

Spring snow on summit, clearing skies. Expect soft conditions by midday.

Mt. Tokachi — 十勝岳

残雪の稜線は冷たい霧雨。行動は早めに

Occasional light rain showers above timberline. Expect cold, wet conditions on

Mt. Tokachi — 十勝岳

残雪の山肌日差しが雪を緩める

Clear Skies and Gentle Winds on Tokachidake. Softening Snow for Spring Ascent.

Mt. Tokachi — 十勝岳

春の残雪が緩む。稜線は風に注意

Spring Snow Softening. Expect Firmness on Exposed Slopes. Clear Views.

Mt. Tokachi — 十勝岳

残雪緩み強風域へ。稜線での行動は慎重に

Mild Morning, but Strong Gusts Expected on Exposed Ridges by Afternoon.

Mt. Tokachi — 十勝岳

湿雪と霧雨続く稜線。午後は風雪強まる

Wet Snow and Freezing Rain Expected. Avoid Exposed Ridges Due to Gusty Winds.

Mt. Tokachi — 十勝岳

濡れた残雪と視界不良。行動は慎重に

Wet snow and limited visibility. Expect slippery residual snow. Layer up for

Mt. Tokachi — 十勝岳

春の残雪硬く締まる。稜線は強風に注意

Firm spring snow on upper slopes. Strong winds expected on exposed ridges.

Mt. Tokachi — 十勝岳

残雪の望岳台コース。午後は雪融け進む

Spring Snow Conditions on Tokachidake. Expect Softening by Midday. Watch for

Mt. Tokachi — 十勝岳

残雪残る稜線。体感は氷点下で防寒徹底

Lingering Snow on Summit. Prepare for Freezing Temps. Moderate Winds with Gusts.