Best Time to Hike West Highland Way (Inverarnan to Tyndrum)
Month-by-month temperatures and rainfall for West Highland Way (Inverarnan to Tyndrum), United Kingdom, based on 2-year climate normals.
Month-by-month weather on West Highland Way (Inverarnan to Tyndrum)
| Month | Avg high | Avg low | Rainfall | Rainy days |
|---|---|---|---|---|
| January | 2°C / 36°F | -1.5°C / 29°F | 151 mm | 15 |
| February | 3.6°C / 38°F | 0°C / 32°F | 212 mm | 19 |
| March | 6.2°C / 43°F | 0.9°C / 34°F | 138 mm | 19 |
| April | 9.2°C / 49°F | 1.9°C / 35°F | 133 mm | 16 |
| May | 14.2°C / 58°F | 6.1°C / 43°F | 117 mm | 16 |
| June | 12.7°C / 55°F | 6.6°C / 44°F | 161 mm | 23 |
| July | 14.8°C / 59°F | 8.6°C / 47°F | 138 mm | 23 |
| August | 14.4°C / 58°F | 9°C / 48°F | 233 mm | 23 |
| September | 12°C / 54°F | 5.8°C / 42°F | 112 mm | 17 |
| October | 9.2°C / 49°F | 5.1°C / 41°F | 212 mm | 20 |
| November | 5.3°C / 42°F | 1.2°C / 34°F | 169 mm | 17 |
| December | 4.5°C / 40°F | 0.7°C / 33°F | 300 mm | 23 |
Highlighted rows are the recommended hiking window. Climate normals via Open-Meteo (2-year average). Mountain weather varies — always check a live forecast before you set off.
The best months to hike West Highland Way (Inverarnan to Tyndrum) are May, July, September. Expect daytime highs around 14°C (57°F) and nights near 7°C (45°F).
Pack flexible layers and a reliable rain shell — conditions can shift quickly in the mountains.
Full route guide, interactive map and free GPX download.
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