午前7時15分現在、筑波山山頂は弱い霧雨、気温13.1℃、湿度99%で視程8.6km。山麓も同様の霧雨で17℃。山頂と山麓の気温差は約3.9℃。日中は霧雨が続き、12時には降水確率98%と高まる。気温は15.5℃まで上昇するが、風は弱くても霧雨と高湿度が続き、体感温度は表示より低く感じるだろう。
登山道は全体的にウェットコンディションで、土の区間は泥濘が予想される。特に男体山・女体山間の奇岩怪石が点在する区間や、御幸ヶ原コースの岩場は濡れて滑りやすくなっている。白雲橋コースのような岩場が多いルートでは、慎重な足運びが求められる。速乾性ベースレイヤーの上にフリースなどの中間着、そして防水透湿性のアウターシェル上下は必須装備だ。濡れ対策として手袋と帽子も携行すること。滑りにくい登山靴を選び、チェーンスパイクやアイゼンは不要。
低体温症のリスクに注意が必要だ。気温は13℃台だが、霧雨と湿度99%で体が濡れると、風が弱くても体温は急速に奪われる。休憩中や行動速度が落ちた際には特に気をつけ、濡れた衣類は放置せず、徹底した防水と保温を心がけること。突風は最大7.8m/sで行動を阻害するレベルではないが、稜線ではより強く感じる可能性がある。雷のリスクは低い。
日中15時頃までは霧雨が続く予報だが、その後は曇りとなり降水は止む見込み。夜間21時には一時晴れ間も出るが、深夜0時以降は再び弱い霧雨、3時には強い霧雨となるため、日没後の行動は避けるべきだ。適切な防水・防寒装備と、滑りやすい路面への十分な注意があれば、行動は可能である。
茨城県
筑波山
Mt. Tsukuba
2026年6月8日 07:04 更新
霧雨で滑りやすい岩場。低体温症に厳重な備えを
Persistent Drizzle and Wet Rocks. Prepare for Slippery Conditions and
現在の気象状況 — Current Conditions
▲ 山頂エリア (Summit)
気温 Temp
+13.1°C
風速 Wind
1.5m/s
ENE
天候 Weather
🌦️ 弱い霧雨
体感 Feels Like
+13.3°C
▼ 登山口・山麓エリア (Base)
気温 Temp
+17°C
風速 Wind
1.8m/s
ENE
天候 Weather
🌦️ 弱い霧雨
標高 Altitude
269m
山頂の3時間予報 — Summit Forecast
09:00
+14°C
1.6m/s
E
💧 0.2mm
(75%)
12:00
+16°C
1.8m/s
ESE
💧 0.2mm
(98%)
15:00
+17°C
1.6m/s
ESE
💧 0mm
(65%)
18:00
+15°C
1.1m/s
SE
💧 0mm
(2%)
21:00
+14°C
0.8m/s
SE
💧 0mm
(0%)
00:00
+14°C
0.6m/s
SE
💧 0.1mm
(41%)
03:00
+14°C
0.9m/s
SE
💧 1.2mm
(90%)
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
As of 7:15 AM, Mt. Tsukuba summit reports light drizzle, 13.1°C, 99% humidity, and 8.6km visibility. The base also experiences light drizzle at 17°C, indicating a summit-base temperature difference of approximately 3.9°C. Light drizzle is expected to persist through the day, with a 98% chance of precipitation by noon. While temperatures may rise to 15.5°C, the combination of drizzle and high humidity will make the effective perceived temperature feel colder than indicated, despite light winds.
Hiking trails are generally wet, with muddy sections expected in earthen areas. Specifically, the bizarre rock formations between Mt. Nantai and Mt. Nyotai, and the rocky sections of the Miyukigahara Course, will be slippery due to wetness. On routes with numerous rocky sections like the Hakunbashi Course, careful footing is essential. Essential gear includes a quick-drying base layer, a mid-layer such as fleece, and waterproof breathable outer shell jacket and pants. Gloves and a hat are also recommended for protection against wetness and to maintain body heat. Choose non-slip hiking boots; microspikes or crampons are not necessary.
Be alert to the risk of hypothermia. Although temperatures are in the 13°C range, the persistent drizzle and 99% humidity can rapidly draw heat from the body if wet, even with light winds. Pay particular attention during breaks or when activity slows. Avoid prolonged exposure in wet clothing and prioritize thorough waterproofing and insulation. Gusts up to 7.8 m/s are not severe enough to impede movement, but may feel stronger on exposed ridges. The risk of lightning is low.
Drizzle is forecast until around 3 PM, after which conditions are expected to become cloudy with no further precipitation. While there may be a brief clear spell around 9 PM, light drizzle will return after midnight, intensifying to strong drizzle by 3 AM, so avoid activity after dark. With proper waterproof and insulating gear, and careful attention to slippery trail conditions, travel is feasible today.
Hiking trails are generally wet, with muddy sections expected in earthen areas. Specifically, the bizarre rock formations between Mt. Nantai and Mt. Nyotai, and the rocky sections of the Miyukigahara Course, will be slippery due to wetness. On routes with numerous rocky sections like the Hakunbashi Course, careful footing is essential. Essential gear includes a quick-drying base layer, a mid-layer such as fleece, and waterproof breathable outer shell jacket and pants. Gloves and a hat are also recommended for protection against wetness and to maintain body heat. Choose non-slip hiking boots; microspikes or crampons are not necessary.
Be alert to the risk of hypothermia. Although temperatures are in the 13°C range, the persistent drizzle and 99% humidity can rapidly draw heat from the body if wet, even with light winds. Pay particular attention during breaks or when activity slows. Avoid prolonged exposure in wet clothing and prioritize thorough waterproofing and insulation. Gusts up to 7.8 m/s are not severe enough to impede movement, but may feel stronger on exposed ridges. The risk of lightning is low.
Drizzle is forecast until around 3 PM, after which conditions are expected to become cloudy with no further precipitation. While there may be a brief clear spell around 9 PM, light drizzle will return after midnight, intensifying to strong drizzle by 3 AM, so avoid activity after dark. With proper waterproof and insulating gear, and careful attention to slippery trail conditions, travel is feasible today.
山岳ガイド — Mountain Guide
概要 Overview
茨城県つくば市の標高877mの双耳峰（男体山・女体山）。日本百名山の中で最も標高が低く、関東平野から特徴的な姿を望むことができる。古来より「西の富士、東の筑波」と並び称されてきた信仰の山。
特徴・地形 Features
男体山と女体山の二峰からなり、両峰の間には御幸ヶ原。奇岩怪石（弁慶七戻り、ガマ石など）が点在する独特の地形。ケーブルカー・ロープウェイで気軽にアクセス可能。
ベストシーズン Best Season
通年登山可能。紅葉は11月中旬。冬季は山頂部凍結に注意。アジサイは6月、桜は4月初旬。
主要ルート Main Routes
御幸ヶ原コース（最一般的）、白雲橋コース、おたつ石コース、ケーブルカー・ロープウェイ。
注意点・危険箇所 Cautions
標高は低いが冬季の凍結・突風に注意。岩場区間でのスリップ事故が散発。混雑期の登山道渋滞。
アクセス Access
つくばエクスプレスつくば駅からシャトルバス。常磐道土浦北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。