今朝の岩手山山頂は薄曇り。体感気温は5.5℃で風は穏やか。山麓との気温差は8℃以上ある。
日中は気温が緩やかに上昇し、風も比較的穏やかに推移する見込み。正午頃に9.8℃まで上がるが、薄曇りは続き、午後には降水確率が90%台まで高まる。降水量は少ない予報だが、湿った空気に包まれる可能性がある。
積雪はなく、地面は基本的にドライ。しかし、薬師岳火口周辺や御鉢めぐりでは浮石に十分注意すること。今日の行動にアイゼンやチェーンスパイクは不要。午後の降水確率上昇に備え、防水透湿性のある上下セパレートの雨具は必須装備となる。
体感気温は日中でも5℃台から10℃程度。ベースレイヤーの上にフリースなどのミッドレイヤー、そして防風性のあるアウターシェルが基本装備。休憩時や風が吹く場所では薄手のダウンや化繊綿の防寒着を重ね着し、低体温症を防ぐ。独立峰の岩手山は天候急変や森林限界以上の強風に注意が必要だが、今日は比較的穏やか。夜間は気温が3℃台まで下がる。日中の行動を推奨する。
岩手県
岩手山
Mt. Iwate
2026年6月12日 07:49 更新
穏やかな薄曇り。火口縁の浮石に注意
Mild Cloudy Conditions. Watch for Loose Rocks Near Crater Rim.
現在の気象状況 — Current Conditions
▲ 山頂エリア (Summit)
気温 Temp
+7.7°C
風速 Wind
0.9m/s
SSW
天候 Weather
⛅ 薄曇り
体感 Feels Like
+5.5°C
▼ 登山口・山麓エリア (Base)
気温 Temp
+16°C
風速 Wind
1.4m/s
SSE
天候 Weather
⛅ 薄曇り
標高 Altitude
608m
山頂の3時間予報 — Summit Forecast
09:00
+9°C
1.5m/s
SSW
💧 0mm
(0%)
12:00
+10°C
2.3m/s
WSW
💧 0mm
(29%)
15:00
+9°C
1.7m/s
W
💧 0mm
(94%)
18:00
+8°C
0.3m/s
WSW
💧 0mm
(98%)
21:00
+5°C
1.4m/s
WSW
💧 0mm
(12%)
00:00
+4°C
1.7m/s
SSW
💧 0.2mm
(0%)
03:00
+3°C
1.5m/s
SW
💧 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
This morning, Mount Iwate summit is partly cloudy with a felt temperature of 5.5℃ and light winds. There is a significant temperature difference of over 8℃ compared to the base.
Throughout the day, temperatures are expected to rise gradually, and winds will remain relatively mild. The temperature will reach around 9.8℃ by noon, but partly cloudy conditions will persist. The probability of precipitation will increase to over 90% in the afternoon. Although the predicted rainfall is minimal, there is a possibility of encountering humid air.
There is no snow cover, and the ground is generally dry. However, extreme caution is advised for loose rocks around the Yakushidake Crater and along the Ohatsumeguri route. Crampons or chain spikes are not required for today's activities. Given the increasing chance of afternoon precipitation, waterproof and breathable rain gear, both jacket and pants, is an essential item.
The felt temperature will range from 5℃ to 10℃ during the day. A base layer, a mid-layer such as fleece, and a windproof outer shell are fundamental. For breaks or in windy areas, adding a light down or synthetic insulated jacket is recommended to prevent hypothermia. While Mount Iwate, as an independent peak, is prone to sudden weather changes and strong winds above the tree line, conditions today are relatively calm. Temperatures will drop to around 3℃ overnight. Daytime activity is recommended.
Throughout the day, temperatures are expected to rise gradually, and winds will remain relatively mild. The temperature will reach around 9.8℃ by noon, but partly cloudy conditions will persist. The probability of precipitation will increase to over 90% in the afternoon. Although the predicted rainfall is minimal, there is a possibility of encountering humid air.
There is no snow cover, and the ground is generally dry. However, extreme caution is advised for loose rocks around the Yakushidake Crater and along the Ohatsumeguri route. Crampons or chain spikes are not required for today's activities. Given the increasing chance of afternoon precipitation, waterproof and breathable rain gear, both jacket and pants, is an essential item.
The felt temperature will range from 5℃ to 10℃ during the day. A base layer, a mid-layer such as fleece, and a windproof outer shell are fundamental. For breaks or in windy areas, adding a light down or synthetic insulated jacket is recommended to prevent hypothermia. While Mount Iwate, as an independent peak, is prone to sudden weather changes and strong winds above the tree line, conditions today are relatively calm. Temperatures will drop to around 3℃ overnight. Daytime activity is recommended.
山岳ガイド — Mountain Guide
概要 Overview
岩手県中部にそびえる標高2,038mの独立峰で、東北を代表する活火山。「南部片富士」と呼ばれる秀麗な山容と、八幡平・盛岡平野を見下ろす壮大な裾野が魅力の百名山。
特徴・地形 Features
山頂部には直径約1.5kmの薬師岳火口を有し、お鉢めぐりが楽しめる。コマクサ・ミヤマキンバイのお花畑が広がる火山礫の斜面が特徴。森林限界が低く独特の景観。
ベストシーズン Best Season
7月〜9月が一般登山シーズン。コマクサの最盛期は7月中旬〜下旬。残雪期は5月後半以降。
主要ルート Main Routes
馬返しコース(最一般的・盛岡側)、焼走りコース、網張コース、御神坂コース。
注意点・危険箇所 Cautions
噴火警戒レベル確認必須。森林限界以上は遮蔽物がなく強風・低体温症リスク。火口縁の浮石注意。
アクセス Access
JR盛岡駅・八幡平市から車。馬返し登山口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。