Temperature
Pleasant by day, brisk at night.
Fort William is most comfortable in spring, summer, and early autumn. Summers are mild and winters are cool. Rain is frequent in most months. Humidity is usually low.

Pleasant by day, brisk at night.
Rain most days.
Cloudier spells limit sunshine.
It rarely feels hot, though humidity can be noticeable during rainy periods.
In August, afternoons feel about 62° and nights feel near 54°.
Mostly cloudy skies.
August late afternoons are around 64°F, easing to about 61°F in early evening.
Calm winds are typical in August.
Want a side-by-side climate view? Compare Fort William with El Chalten.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jul 31, 2026
Data & methodology