伊吹山は終日快晴が続く。山頂の視程は20km以上と良好で、琵琶湖や濃尾平野の雄大な展望が楽しめる日となるだろう。地面は乾燥しており、全体的にドライコンディション。表登山道など、一気登りのルートでは体力消耗が激しく、山麓との気温差も約8℃あるため、行動中は汗冷えと夏期の熱中症の両方に注意が必要だ。
日中の山頂体感気温は15℃から19℃程度で推移する見込み。ベースレイヤーの上に薄手のミッドレイヤーで行動可能だが、休憩時や風当たりの良い場所ではフリースや薄手ダウンなどの保温着、防風アウターを積極的に着用して体温調節を行うこと。特に下山時や夕方以降は気温が急激に低下し、夜間には8.8℃まで冷え込む予報が出ている。
自動リスク判定でも指摘されている通り、予報期間中に7℃の気温低下が見込まれるため、日中の行動でも防寒レイヤーを1枚多めに携行し、早めの引き返し判断が命を守る。雷や強風のリスクは低いが、気温低下による低体温症には十分な注意が必要だ。十分な水分補給も忘れずに。
滋賀県
伊吹山
Mt. Ibuki
2026年5月18日 06:55 更新
伊吹山快晴の展望日和。行動中の気温変化に注意
Clear Skies and Panoramic Views on Mt. Ibuki. Prepare for Evening Temperature
現在の気象状況 — Current Conditions
▲ 山頂エリア (Summit)
気温 Temp
+12.4°C
風速 Wind
1.1m/s
ENE
天候 Weather
☀️ 快晴
体感 Feels Like
+10.5°C
▼ 登山口・山麓エリア (Base)
気温 Temp
+20.3°C
風速 Wind
1.8m/s
E
天候 Weather
☀️ 快晴
標高 Altitude
228m
山頂の3時間予報 — Summit Forecast
09:00
+16°C
1.4m/s
ESE
💧 0mm
(0%)
12:00
+19°C
1.6m/s
SE
💧 0mm
(0%)
15:00
+19°C
1.6m/s
ESE
💧 0mm
(0%)
18:00
+15°C
1.3m/s
E
💧 0mm
(0%)
21:00
+11°C
1m/s
NE
💧 0mm
(0%)
00:00
+9°C
1.5m/s
NE
💧 0mm
(0%)
03:00
+9°C
1.5m/s
NNE
💧 0mm
(0%)
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
Mount Ibuki will experience clear skies throughout the day. Summit visibility is excellent, extending beyond 20km, offering spectacular panoramic views of Lake Biwa and the Nobi Plain. Ground conditions are dry across the mountain. Hikers on routes like the Omote Tozando (main climbing trail), known for its steep ascent, should be mindful of rapid energy depletion and the significant temperature difference of approximately 8°C between the summit and base. Vigilance against both hypothermia from sweat-induced chilling and heatstroke is crucial during your activity.
Daytime summit perceived temperatures are expected to range from 15°C to 19°C. A base layer combined with a light mid-layer will be comfortable for active climbing. However, during breaks or in exposed areas, it is essential to actively manage body temperature by adding insulating layers such as a fleece or light down jacket, and a windproof outer shell. A significant temperature drop is forecast for the evening, with temperatures potentially falling to 8.8°C overnight.
As highlighted by the automated risk assessment, a rapid temperature decrease of 7°C is anticipated within the forecast period. Therefore, even for daytime activities, carry an extra insulating layer. Timely decisions to turn back are vital for safety. While risks of lightning and strong winds are low, be fully prepared for the potential of hypothermia due to the sharp drop in temperature. Ensure adequate hydration throughout your ascent and descent.
Daytime summit perceived temperatures are expected to range from 15°C to 19°C. A base layer combined with a light mid-layer will be comfortable for active climbing. However, during breaks or in exposed areas, it is essential to actively manage body temperature by adding insulating layers such as a fleece or light down jacket, and a windproof outer shell. A significant temperature drop is forecast for the evening, with temperatures potentially falling to 8.8°C overnight.
As highlighted by the automated risk assessment, a rapid temperature decrease of 7°C is anticipated within the forecast period. Therefore, even for daytime activities, carry an extra insulating layer. Timely decisions to turn back are vital for safety. While risks of lightning and strong winds are low, be fully prepared for the potential of hypothermia due to the sharp drop in temperature. Ensure adequate hydration throughout your ascent and descent.
山岳ガイド — Mountain Guide
概要 Overview
滋賀県と岐阜県の県境にそびえる標高1,377mの独立峰。古来より日本武尊神話の舞台として知られ、近江盆地・濃尾平野から特徴的な山容を望むことができる関西を代表する百名山。
特徴・地形 Features
石灰岩質の山体で、独特の植生(イブキジャコウソウ・イブキトラノオなど固有種)が分布。山頂部は広大な草原状で、琵琶湖と濃尾平野の大パノラマが広がる。
ベストシーズン Best Season
4月〜11月が一般シーズン。お花畑の最盛期は7月〜8月。降雪期は本格冬山。
主要ルート Main Routes
表登山道(最一般的・上野登山口)、ドライブウェー利用山頂往復。
注意点・危険箇所 Cautions
標高は低いが冬期は3m超の積雪と厳冬期気温で本格冬山。日射病・熱中症(夏期)にも注意。
アクセス Access
JR東海道線米原駅・近江長岡駅からバス。名神高速関ヶ原ICから車。
※ 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。