山岳レポート – 日本山岳気象レポート

Latest Report — 2026-07-28 07:07 JST

八甲田山：八甲田山夏の霧雨。湿原は視界不良に注意。

八甲田山頂は薄曇りで14℃。弱い風が吹くものの、湿度92%と高く、行動開始からすでに蒸し暑さを感じるだろう。山麓は18.9℃とさらに暖かく、山頂との気温差は5℃近くある。日中は弱い霧雨が続き、正午から15時にかけては降水確率が90%を超える。地面はウェットから泥濘状態と推測される。山頂付近の体感気温は14℃、風速1.22m/sで約12.8℃だが、突風時5.4m/sでは8.6℃程度にまで下がる。霧雨で体が濡れると、風が弱くとも体感はさらに低下する。ベースレイヤーには速乾性の化繊、ミッドレイヤーに薄手のフリースや化繊綿、アウターには防水透湿性のレインウェア上下を必ず携行し、濡れ対策を徹底すること。視程は現状1.8kmと短く、日中の霧雨でさらに悪化する可能性がある。八甲田山は湿原が多く、特に大岳から酸ヶ湯へ向かうルート上では、濃霧による道迷いのリスクが高まる。地形図とコンパス、GPSを常に確認し、現在地の把握を怠らないこと。強風や雷のリスクは低いが、濡れによる低体温症には警戒が必要だ。夕方18時以降は一時的に降水が止み、21時にはほぼ晴れる予報だが、翌早朝には再び弱い霧雨となる。夜間の行動は気温の低下と視界不良が複合的に作用するため、日没前の下山を推奨する。

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78 件

2026 / July

23 reports

Mt. Hakkoda — 八甲田山

八甲田山夏の霧雨。湿原は視界不良に注意。

Hakkoda's Summer Day: Misty Drizzle Expected. Prepare for High Humidity and

Mt. Hakkoda — 八甲田山

濃霧深く視界不良。湿原での道迷いに警戒

Persistent Fog and Low Visibility on Hakkoda. Prepare for Damp Conditions.

Mt. Hakkoda — 八甲田山

湿原は高湿度でウェット。道迷いに警戒し慎重に行動を

Persistent Cloud and High Humidity. Stay Alert for Visibility Changes on Wet

Mt. Hakkoda — 八甲田山

日中視界不良と弱い雨湿原ルートは道迷い注意

Limited Visibility and Light Rain. Exercise Extreme Caution in Wetland

Mt. Hakkoda — 八甲田山

湿原は霧の気配。午後は視界回復へ

Moderate visibility and humid conditions for summer hiking. Clearer skies

Mt. Hakkoda — 八甲田山

濃霧と霧雨の一日。強風に煽られ道迷い遭難に注意

Poor Visibility and Strong Gusts. Wet Ground Conditions. Navigation with GPS

Mt. Hakkoda — 八甲田山

穏やかな夏山歩き昼頃の弱い霧雨に注意

Mild Summer Day on Hakkoda. Prepare for brief drizzle. Trails mostly dry.

Mt. Hakkoda — 八甲田山

八甲田山は穏やかな夏日。湿原の視界に注意

Mild Summer Day on Hakkoda. Enjoy Clear Views but Monitor Humidity in Wetlands.

Mt. Hakkoda — 八甲田山

八甲田夏山薄曇り。午後から湿原の霧に注意

Mild Hakkoda Morning. Expect Increasing Clouds and Potential Fog Near Wetlands.

Mt. Hakkoda — 八甲田山

夏山快晴視界良好な八甲田を楽しむ

Clear and calm conditions expected for Hakkoda today. Enjoy high visibility

Mt. Hakkoda — 八甲田山

八甲田視界回復のち快晴。湿原の道迷いに注意

Hakkoda visibility clearing, calm winds and clear skies for daytime ascent.

Mt. Hakkoda — 八甲田山

午前中は視界不良午後から晴れ間広がる

Improving Visibility and Afternoon Sunshine. Prepare for Evening Rain.

Mt. Hakkoda — 八甲田山

八甲田山稜線は穏やか大岳へ快適な登高

Pleasant Summer Hiking. Clear Views on Ridges. Moderate Winds Expected.

Mt. Hakkoda — 八甲田山

霧雨で視界不良湿原での道迷いに警戒

Foggy Conditions and Wet Trails. Navigate Carefully, Especially Near Wetlands.

Mt. Hakkoda — 八甲田山

霧雨と突風続く。濡れ冷えに注意

Persistent Light Rain and Gusty Winds Expected. Prepare for Wet Conditions and

Mt. Hakkoda — 八甲田山

午前は快晴だが午後は霧雨。湿原は視界不良に注意

Morning clear turns to light rain. Expect reduced visibility near wetlands.

Mt. Hakkoda — 八甲田山

日中は穏やかな山行日和。湿原のコンディションに注意

Mild Weather for Daytime Hiking. Watch Humidity and Potential for Localized

Mt. Hakkoda — 八甲田山

薄曇り穏やかな一日。湿原では足元注意

Mild Weather and Light Winds on Hakkoda. Prepare for Potential Wet Trails in

Mt. Hakkoda — 八甲田山

八甲田山は穏やかな晴れ。午後の霧雨に注意

Mild Summer Conditions for Hiking. Prepare for Brief Midday Drizzle.

Mt. Hakkoda — 八甲田山

夏山穏やか稜線歩きに適す

Gentle summer conditions on Hakkoda. Ideal for hiking the main ridge route.

Mt. Hakkoda — 八甲田山

穏やかな夏山登山日和。地獄沼の火山ガスに注意

Calm Summer Ascent on Hakkoda. Monitor Volcanic Gas Near Jigokunuma.

Mt. Hakkoda — 八甲田山

朝霧晴れ間へ。湿原は足元に注意

Morning fog giving way to clear skies. Mild conditions for mid-elevation hiking.

Mt. Hakkoda — 八甲田山

日中は穏やかな登山日和。午後の気温低下に備えよ

Mild Summer Ascent on Hakkoda. Prepare for Afternoon Temperature Drop.

2026 / June

29 reports

Mt. Hakkoda — 八甲田山

八甲田山夏山快晴。快適な稜線歩きを

Hakkoda Offers Clear Views and Mild Conditions. Enjoy the Trails.

Mt. Hakkoda — 八甲田山

快晴で風穏やか。八甲田大岳へ絶好の登山日和

Clear Skies and Calm Winds. Ideal Conditions for Hiking Northern Hakkoda Today.

Mt. Hakkoda — 八甲田山

八甲田山は快晴。穏やかな山歩きを楽しめ

Clear Skies and Mild Winds. Enjoy Mount Odake Summit Views Today.

Mt. Hakkoda — 八甲田山

霧雨のち視界開ける。稜線は突風注意

Morning Mist Clears for Sunny Afternoon. Trails Wet, Gusts on Exposed Ridges.

Mt. Hakkoda — 八甲田山

八甲田山は霧雨続く湿潤な一日。湿原での視界に注意

Persistent Light Rain and High Humidity. Expect Wet Trails and Prepare for

Mt. Hakkoda — 八甲田山

穏やかな晴天。ロープウェイから大岳縦走に最適

Clear and Calm Day for Hakkoda Alpine Hiking. Enjoy Trails to Mt. Odake.

Mt. Hakkoda — 八甲田山

快晴微風の八甲田夏山歩きに好適

Clear Skies and Gentle Breezes. Ideal for Summer Mountain Traverse.

Mt. Hakkoda — 八甲田山

湿原の濃霧に注意。雨具は必携

Wet and Foggy Conditions Expected. Prepare for Rain and Limited Visibility.

Mt. Hakkoda — 八甲田山

雨と霧の八甲田。低体温と視界不良に備えよ

Persistent Rain and Low Visibility. Wet Trails and Hypothermia Risk on Peaks.

Mt. Hakkoda — 八甲田山

雨とガスに強風。濃霧道迷い警戒

Continuous rain and strong winds. Poor visibility below 1km. Avoid exposed

Mt. Hakkoda — 八甲田山

薄曇り視界不良。湿原での道迷い濃霧に注意

Hakkoda: Limited Visibility. Expect Wet Conditions and Potential Fog in

Mt. Hakkoda — 八甲田山

強い雨と湿原の泥濘。道迷いに厳重警戒

Persistent rain and reduced visibility today. Expect wet, muddy trails.

Mt. Hakkoda — 八甲田山

八甲田青空広がる。湿原の道は快適

Clear skies and light winds, ideal dry trail conditions for exploring Hakkoda

Mt. Hakkoda — 八甲田山

八甲田山快晴の眺望広がる穏やかな一日

Hakkoda Offers Pristine Views. Enjoy Dry Trails and Gentle Breezes Today.

Mt. Hakkoda — 八甲田山

八甲田山新緑の稜線歩き快適

Clear Skies and Gentle Breeze. Ideal Conditions for Early Summer Trekking.

Mt. Hakkoda — 八甲田山

午後から雨。濡れと気温低下に備えよ

Afternoon Rain Expected with Dropping Temperatures. Prepare for Wet and Cooler

Mt. Hakkoda — 八甲田山

八甲田は快晴微風。大岳方面へ快適な歩行を

Clear Skies and Calm Winds for Hiking Hakkoda. Dry Trails Expected.

Mt. Hakkoda — 八甲田山

霧雨と突風。湿原帯は道迷いと体感低下に警戒

Light Drizzle and Gusty Winds. Prepare for Reduced Visibility and Cold Exposure.

Mt. Hakkoda — 八甲田山

午前は快適な登山。午後は湿原の霧に注意

Mild Morning Hike on Wet Trails. Expect Afternoon Mists and Light Rain.

Mt. Hakkoda — 八甲田山

午前中の濃霧注意湿原は泥濘

Limited visibility improving midday. Expect wet, muddy trails. Layer up for

Mt. Hakkoda — 八甲田山

濃霧と突風の稜線。視界不良に注意

Dense fog and gusty winds on exposed ridges. Chilly and wet conditions expected.

Mt. Hakkoda — 八甲田山

霧雨が続き視界不良。稜線は冷え込む

Dense Fog and Persistent Drizzle. Avoid Exposed Ridges. High Hypothermia Risk.

Mt. Hakkoda — 八甲田山

八甲田山頂は霧中。湿原での道迷いに警戒

Hakkoda Summit Foggy with Limited Visibility. Mild Temps and Light Winds

Mt. Hakkoda — 八甲田山

濃霧と霧雨が続く。低体温症に厳重警戒

Dense Fog and Drizzle persist. Hypothermia risk high. Navigate cautiously,

Mt. Hakkoda — 八甲田山

濃霧に包まれ体感氷点下。湿原での道迷いに警戒

Persistent Fog and Cold. Navigate Carefully in Wetlands. Hypothermia Risk.

Mt. Hakkoda — 八甲田山

新緑の八甲田は穏やか。視程不良時は湿原での道迷いに警戒

Clear Skies and Mild Breeze for Morning Traverse. Visibility Concerns on Open

Mt. Hakkoda — 八甲田山

日中は穏やかな山歩き。夜間は冷え込み強風に注意

Mild Weather for Daytime Ascent. Prepare for Significant Temperature Drop and

Mt. Hakkoda — 八甲田山

稜線に突風あり。夏山装備で快適な登高を

Daytime Clear with Light Winds. Dry Trails. Layer for Occasional Ridge Gusts.

Mt. Hakkoda — 八甲田山

快晴の八甲田山湿原の霧と火山ガスに注意

Clear Skies and Mild Winds Offer Excellent Hiking Conditions Today.

2026 / May

26 reports

Mt. Hakkoda — 八甲田山

霧雨と突風続く八甲田稜線は危険

Gusty Winds and Drizzle on Hakkoda. Avoid Exposed Ridges Until Afternoon.

Mt. Hakkoda — 八甲田山

稜線は暴風と濃霧。湿原の道迷いに警戒

Intense Wind Gusts and Dense Fog Persist. Navigate Safely Within Sheltered

Mt. Hakkoda — 八甲田山

八甲田山午後は雨。湿原は泥濘に注意

Afternoon Rain and Wet Conditions on Hakkoda. Prepare for Muddy Trails.

Mt. Hakkoda — 八甲田山

穏やかな八甲田。湿原散策は快適に

Mild Conditions and Clear Views for Daytime Hiking. Watch for Evening Cloud

Mt. Hakkoda — 八甲田山

八甲田山春の穏やかな一日。湿原では足元に注意

Mild Spring Day in Hakkoda. Expect Muddy Wetlands. Gusts on Ridges.

Mt. Hakkoda — 八甲田山

八甲田は穏やかな晴れ。湿原の霧とガスに注意を

Mild Spring Day on Hakkoda. Prepare for Localized Mist in Wetlands.

Mt. Hakkoda — 八甲田山

午後から霧雨肌寒い。濡れた地面に足元注意

Cool, cloudy morning with light drizzle developing. Expect wet, slippery trails

Mt. Hakkoda — 八甲田山

新緑の八甲田風穏やか展望楽しむ

Dry trails for spring hiking. Enjoy clear summit views under light winds.

Mt. Hakkoda — 八甲田山

八甲田稜線は冷涼な風湿原は泥濘に注意

Clear skies with chilly winds on exposed ridges. Expect wet, muddy trails in

Mt. Hakkoda — 八甲田山

濃霧と低温続く。視界不良の稜線行動は慎重に

Limited Visibility and Chilly Conditions on Ridgelines. Exercise Caution on

Mt. Hakkoda — 八甲田山

青空広がる穏やかな登山日和。稜線歩きは快適

Clear skies and gentle winds expected for ideal hiking. Enjoy the early summer

Mt. Hakkoda — 八甲田山

八甲田は穏やかな春山。稜線突風に警戒し行動を

Mild Spring Conditions on Hakkoda. Prepare for Gusts on Exposed Ridges.

Mt. Hakkoda — 八甲田山

八甲田は快晴。稜線は突風に注意

Clear Skies and Mild Winds. Enjoy Hiking from Tamoyachidake to Odake.

Mt. Hakkoda — 八甲田山

八甲田は快晴微風。大岳への縦走は快適に

Clear Skies and Gentle Winds on Hakkoda. Enjoy Dry Trails and Panoramic Views.

Mt. Hakkoda — 八甲田山

快晴微風の八甲田。視界良好の山歩き

Clear skies and mild conditions for hiking. Excellent visibility across the

Mt. Hakkoda — 八甲田山

八甲田は絶好の登山日和。湿原の足元に注意

Perfect Clear Weather for Spring Hiking. Expect Muddy Sections in Wetlands.

Mt. Hakkoda — 八甲田山

春の八甲田快晴広がり穏やかな一日

Mild Spring Conditions on Hakkoda. Clear Skies and Light Winds for Hiking.

Mt. Hakkoda — 八甲田山

八甲田快晴広がる視界。大岳へ快適な登高を

Clear Skies and Gentle Winds on Hakkoda. Enjoy Wide Views Before Night Chill.

Mt. Hakkoda — 八甲田山

春の気配と穏やかな風。稜線は突風に警戒

Spring Warmth and Clear Skies. Watch for Occasional Gusts on Exposed Trails.

Mt. Hakkoda — 八甲田山

残雪と湿原の泥濘に注意穏やかな八甲田

Clear skies and mild winds for Hakkoda today. Expect wet trails and melting

Mt. Hakkoda — 八甲田山

春の八甲田は快晴。稜線歩きは強風に注意

Clear Skies Over Hakkoda. Enjoy Summit Views, but Prepare for Midday Gusts.

Mt. Hakkoda — 八甲田山

五月雪が舞い散る。路面滑りやすく体感は真冬

Early May Snowfall Creates Slippery Trails. Gusty Winds on Exposed Ridges

Mt. Hakkoda — 八甲田山

薄曇りの春山。湿原は泥濘、午後の降水に備えよ

Spring conditions on Hakkoda. Mild morning, increasing clouds, prepare for

Mt. Hakkoda — 八甲田山

春の日差しと突風。開けた稜線は要注意

Spring Sunshine and Gusts. Dry Trails, Mind Exposed Ridgelines.

Mt. Hakkoda — 八甲田山

八甲田は快晴。大岳稜線は突風に注意し防寒対策を

Clear Skies on Hakkoda. Prepare for Gusty Winds on Exposed Ridges and Cold Wind

Mt. Hakkoda — 八甲田山

稜線は突風に警戒。体感は氷点下

Clear Summits with Strong Gusts. Prioritize Shelter on Exposed Ridges.