山岳レポート – 日本山岳気象レポート

Latest Report — 2026-07-28 07:07 JST

利尻山：快晴微風の利尻山。山頂部は安定

利尻山山頂は現在快晴、気温7.9℃、体感6.6℃と穏やかだ。視程は20kmを超え、雄大な展望が広がる。風も微弱で、午前中は登山に適した絶好のコンディションが続く。山麓との気温差は約9.5℃と大きく、海抜0からの標高差1500mの独立峰であることを念頭に置いた装備と、十分な行動

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81 件

2026 / July

24 reports

Mt. Rishiri — 利尻山

快晴微風の利尻山。山頂部は安定

Clear Skies and Calm Winds on Rishiri. Ideal Conditions for Summit Ascent.

Mt. Rishiri — 利尻山

利尻山快晴の夏山。脆い火山礫に注意

Clear Skies and Calm Winds on Rishiri. Mind Volcanic Gravel on Upper Slopes.

Mt. Rishiri — 利尻山

利尻山穏やかな登山日和。脆い足元に注意

Rishiri Summit: Cool and Clearer. Stable Winds, Mind the Volcanic Scree.

Mt. Rishiri — 利尻山

高山帯は涼しい風。視界良好だが防寒怠るな

Cool Summit Conditions. Dry Trails. Dress Warm for Exposed Ridges.

Mt. Rishiri — 利尻山

独立峰冷涼な登山日。体感気温に注意

Cool, Humid Conditions on Rishiri. Prepare Layers for Summit Exposure.

Mt. Rishiri — 利尻山

利尻山穏やかな曇天 9合目以上は慎重に

Gentle Winds and Moderate Temperatures. Enjoy Stable Ascent on Rishiri.

Mt. Rishiri — 利尻山

穏やかな晴れ。山頂からの眺望を楽しむ一日

Clear skies and mild winds. Enjoy panoramic views today.

Mt. Rishiri — 利尻山

独立峰に涼風。脆い火山礫帯を慎重に

Stable Weather for Rishiri Climb. Expect Cool, Humid Conditions Above Treeline.

Mt. Rishiri — 利尻山

曇天穏やか。午後から雨天へ。早めの行動を

Cloudy Morning, Summit Visibility Good. Prepare for Afternoon Rain and Cooler

Mt. Rishiri — 利尻山

利尻山視界良好。脆い火山礫に足元注意

Moderate winds, stable conditions on Rishiri. Enjoy clear views on volcanic

Mt. Rishiri — 利尻山

視程回復。稜線は風弱く歩きやすい

Improving Visibility and Milder Conditions on Rishiri. Enjoyable Ascent

Mt. Rishiri — 利尻山

霧雨の一日稜線は低温と視界不良

Damp conditions with low visibility. Expect cool temperatures on exposed

Mt. Rishiri — 利尻山

曇り空の下稜線は穏やか行動は慎重に

Cloudy conditions with mild winds. Watch for potential sea fog on upper slopes.

Mt. Rishiri — 利尻山

濃霧と霧雨の一日。視界不良に警戒

Limited visibility and light drizzle expected. High humidity and cool

Mt. Rishiri — 利尻山

雨霧の利尻山。低温と脆い火山礫に警戒

Persistent Drizzle and Low Visibility on Rishiri. Prepare for Wet and Cold

Mt. Rishiri — 利尻山

独立峰は湿った曇り 9合目火山礫に注意

Humid and Cloudy on Rishiri. Prepare for Slippery Volcanic Terrain.

Mt. Rishiri — 利尻山

利尻山頂曇天穏やか。高標高は体感冷涼

Calm cloudy conditions on Rishiri. Maintain layers for cool summit temperatures.

Mt. Rishiri — 利尻山

利尻山静穏な登山日和。山頂の脆い火山礫に注意

Rishiri Island: Calm ascent conditions. Good visibility. Prepare for cool

Mt. Rishiri — 利尻山

利尻山独立峰の曇天。体感冷涼

Calm Cloudy Day on Rishiri. Expect Light Drizzle Midday, Dress Warm.

Mt. Rishiri — 利尻山

利尻山穏やかな晴天へ。山頂は涼しく

Clearing Skies and Light Winds for Summit Ascent. Enjoy Stable Conditions.

Mt. Rishiri — 利尻山

利尻山日中晴れ間期待稜線は突風に注意

Clearing Skies and Moderate Winds on Rishiri. Prepare for Cool Summit

Mt. Rishiri — 利尻山

快晴の利尻山。9合目以上は足元に注意

Clear Skies on Rishiri. Excellent Visibility for Ascent. Mild Winds.

Mt. Rishiri — 利尻山

快晴が続き見晴らし良好。山頂付近は脆い火山礫に注意

Clear Skies and Dry Trails on Rishiri. Mind Loose Volcanic Gravel on Upper

Mt. Rishiri — 利尻山

霧雨から晴れへ。独立峰は低温、足元注意

Misty morning transitions to clear skies on Rishiri. Wet ground conditions,

2026 / June

30 reports

Mt. Rishiri — 利尻山

利尻山稜線は風強く体感低温。9合目以降の火山礫に注意。

Chilly Summit Winds, Exposed Ridges Require Caution. Layer Up for Safety.

Mt. Rishiri — 利尻山

霧雨止み快晴へ高度を上げれば冷涼

Drizzle Fades to Clear Skies. Be Prepared for Cold and Wet Conditions on Upper

Mt. Rishiri — 利尻山

利尻山雲中の頂低体温警戒脆い火山礫に注意

Cloudy Summit Low Temperatures. Prepare for Hypothermia on Exposed Upper Slopes.

Mt. Rishiri — 利尻山

霧雨の独立峰低温と泥濘に注意

Chilly Drizzle on Rishiri Summit. Wet and Muddy Trails. Clearing Expected

Mt. Rishiri — 利尻山

穏やかな山頂。脆い火山礫に足元注意

Calm Conditions for Daytime Ascent. Expect Wet Trails and Cooler Temps by

Mt. Rishiri — 利尻山

上部は強風に注意。体感は低温で防寒対策を。

Strong Gusts on Upper Slopes. Prepare for Cold Wind Exposure.

Mt. Rishiri — 利尻山

快晴の利尻。稜線は風強まり体感氷点下

Clear Skies on Rishiri. Strong Winds and Low Wind Chill on Exposed Ridges.

Mt. Rishiri — 利尻山

利尻山頂は快晴微風。冷涼な空気と絶景

Clear Skies and Calm Winds on Rishiri-zan. Expect Cool Alpine Conditions.

Mt. Rishiri — 利尻山

利尻山高所は厳冬。風対策怠るな

Summit Temperatures Near Freezing. Moderate Winds Persist. Upper Reaches Demand

Mt. Rishiri — 利尻山

稜線は東風強く体感は真冬並み

Challenging conditions on Rishiri Summit. Prepare for strong winds and sub-zero

Mt. Rishiri — 利尻山

稜線は風冷え。9合目以上は慎重な足運びを

Cool Summit Winds and Good Visibility. Prepare for Cold Temperatures Above 9th

Mt. Rishiri — 利尻山

霧雨と低温傾向。脆い火山礫は滑りやすく

Cloudy with light drizzle, prepare for significant temperature drop by

Mt. Rishiri — 利尻山

薄日差し込み穏やかな一日。火山礫帯は慎重に

Cloudy with Light Drizzle. Stable Ridge Conditions. Careful Footing on Volcanic

Mt. Rishiri — 利尻山

利尻山稜線は涼風。防寒対策必須

Calm winds, cloudy skies. Cool summit conditions persist. Layering essential

Mt. Rishiri — 利尻山

快晴の利尻山。午後から雲が広がる

Clear Morning for Rishiri Ascent. Prepare for Afternoon Cloud Cover and

Mt. Rishiri — 利尻山

日中の風は穏やか。山頂の脆い火山礫に注意

Calm conditions on Rishiri summit. Mild temperatures and clear visibility

Mt. Rishiri — 利尻山

霧雨と低温が続く。早めの引き返しを

Foggy Drizzle and Cold Temperatures Expected. Prepare for Rapid Weather Changes.

Mt. Rishiri — 利尻山

稜線は風強く、9合目以上火山礫に注意

Windy on exposed ridges. Expect cool temperatures and unstable volcanic gravel

Mt. Rishiri — 利尻山

穏やかな薄曇り。山頂風冷えに注意

Calm Winds and Partly Cloudy Skies. Summit Temperatures Remain Chilly.

Mt. Rishiri — 利尻山

肌寒い山頂薄着は禁物

Cool and Cloudy Conditions on Rishiri. Prepare for Exposed Ridges with Layers.

Mt. Rishiri — 利尻山

利尻山頂は冬の気配。脆い火山礫に注意

Cool Summit Conditions. Gradual Warming by Midday. Prepare for Variable Terrain.

Mt. Rishiri — 利尻山

冷たい雨と風利尻山は低体温に厳重警戒

Persistent Drizzle and Near-Freezing Summit. Hypothermia Risk Demands Vigilance.

Mt. Rishiri — 利尻山

利尻山霧雨と低温続く。脆い火山礫に注意

Drizzle and low temperatures persist. Wet and loose volcanic scree requires

Mt. Rishiri — 利尻山

氷点下の体感続く。脆い火山礫に足元注意

Rishiri Summit: Sub-zero feels, brittle volcanic scree. Careful footing

Mt. Rishiri — 利尻山

利尻山曇天と低温。脆い火山礫に足元注意

Cloudy and Cold Summit Conditions. Prepare for Wind Chill and Unstable Volcanic

Mt. Rishiri — 利尻山

利尻山午後から風強まる。気温低下に備えよ

Cloudy summit, prepare for afternoon winds and a sharp temperature drop.

Mt. Rishiri — 利尻山

利尻は快晴広がるも山頂は低温稜線風に備えよ

Clear Skies and Gentle Winds on Rishiri. Prepare for Cold Alpine Conditions.

Mt. Rishiri — 利尻山

利尻山快晴広がる穏やかな一日

Improving Weather and Calm Winds. Excellent Visibility for Summit Ascent.

Mt. Rishiri — 利尻山

日中穏やか。脆い火山礫に注意し慎重に登高

Mild conditions expected. Focus on stable footing through the fragile volcanic

Mt. Rishiri — 利尻山

視界は開けるも稜線は強風。山頂付近の行動は慎重に

Clear Skies with Persistent Strong Winds. Exercise Caution on Exposed Upper

2026 / May

27 reports

Mt. Rishiri — 利尻山

日中は穏やかな晴天。山頂礫帯は浮石に注意

Favorable Conditions on Rishiri Peak. Expect Dry Volcanic Terrain. Layer for

Mt. Rishiri — 利尻山

利尻山冷風吹き荒れる稜線。体感は氷点下

Strong winds and sub-zero wind chills on Rishiri's exposed upper slopes.

Mt. Rishiri — 利尻山

稜線は濃霧と強風。視界不良の霧雨に警戒

Dense Fog and Freezing Rain Expected. High Winds on Exposed Summit Ridge.

Mt. Rishiri — 利尻山

霧雨で濡れる山肌。独立峰の低温に厳重警戒

Wet and Foggy Conditions on Rishiri. Prepare for Cold Temperatures and Limited

Mt. Rishiri — 利尻山

濃霧に包まれ視界不良。低温と強風に備えよ

Dense fog and cold conditions persist on exposed ridges. Prepare for limited

Mt. Rishiri — 利尻山

利尻山稜線は強風と低温。火山礫の足元注意

Strong winds and cold conditions on exposed ridges. Caution on volcanic scree.

Mt. Rishiri — 利尻山

曇天低温の利尻山。午後風強まり体感低下

Chilly and Cloudy Summit Day. Expect Muddy Trails and Afternoon Gusts.

Mt. Rishiri — 利尻山

日中も風で体感冷え込む。濡れた火山礫に注意

Summit Winds Bring Chill. Wet Volcanic Gravel. Prepare for Cold, Slippery

Mt. Rishiri — 利尻山

山頂は肌寒い一日。風穏やか見晴らし良好

Cloudy with cool summit temperatures. Expect calm winds and clear visibility

Mt. Rishiri — 利尻山

利尻山快晴広がる。山頂の脆い火山礫に注意

Clear Visibility and Mild Winds on Rishiri. Brief Morning Drizzle Possible,

Mt. Rishiri — 利尻山

九合目以上は凍結注意。日中晴れても体感低い

Summit cold persists. Clear skies afternoon. Dry to frozen ground possible on

Mt. Rishiri — 利尻山

気温低く岩稜露出。9合目以降の火山礫は慎重に

Cloudy Morning with Light Drizzle Risk, Clearing to Cold Afternoon. Exposed

Mt. Rishiri — 利尻山

山頂は霧雨と低温濡れと冷えに警戒

Freezing Drizzle on Summit. Wet, Cold Conditions. High Hypothermia Risk.

Mt. Rishiri — 利尻山

稜線は強風に注意。午後は気温低下と霧雨へ

Windy and Cold Summit Conditions on Rishiri. Prepare for Afternoon Temperature

Mt. Rishiri — 利尻山

利尻山山頂は冬の様相。9合目脆い火山礫は凍結に注意

Summit retains winter bite. Expect icy conditions on upper slopes, demanding

Mt. Rishiri — 利尻山

日中突風17m/s超。山頂アタックは再検討を

Strong Winds and Low Visibility at Summit. Avoid Exposed Upper Slopes Today.

Mt. Rishiri — 利尻山

稜線は強風に晒され体感低温。火山礫に注意

Exposed Summit Ridges Gusty and Cold. Expect Loose Volcanic Scree on Upper

Mt. Rishiri — 利尻山

山頂は厳冬期並みの寒さ。防寒対策を万全に

Winter Conditions on Rishiri Summit. Prepare for Cold and Exposed Ridges.

Mt. Rishiri — 利尻山

利尻山氷雨と濃霧。脆い火山礫凍結に注意

Freezing Rain and Limited Visibility. Slippery Volcanic Gravel on Upper Slopes.

Mt. Rishiri — 利尻山

利尻山稜線上の突風に警戒厳しい寒さ

Sunny morning, but exposed ridges face strong winds. Expect sub-zero wind

Mt. Rishiri — 利尻山

稜線は強風と低温に警戒。午後は視界開ける

Strong winds and cold temperatures on exposed ridges. Expect clearer skies by

Mt. Rishiri — 利尻山

利尻山快晴。突風と低温に注意し行動を

Clear Skies on Rishiri. Cold Summit with Gusty Winds. Excellent Visibility for

Mt. Rishiri — 利尻山

利尻山凍雨と低温。低体温症に厳重警戒

Freezing Rain and Low Visibility. Hypothermia Risk on Upper Slopes.

Mt. Rishiri — 利尻山

独立峰の静寂。脆い火山礫に足元注意

Calm, Cloudy Ascent on Rishiri. Prepare for Afternoon Chill and Evening Rain.

Mt. Rishiri — 利尻山

霧雨で濡れた岩稜に滑落注意

Light Drizzle and Cold Summit Conditions. Wet Rocks on Upper Slopes Demand

Mt. Rishiri — 利尻山

雨上がり脆い火山礫に注意。稜線風強く冷え込む

Slippery volcanic scree on upper slopes. Summit wet and windy, gradually

Mt. Rishiri — 利尻山

利尻山稜線は風強し。体感氷点下で低体温症警戒

Strong Winds and Freezing Conditions on Exposed Ridges. Exercise Extreme