What is Lochaber mountain weather like in September?

Typical mountain and low-level wind, temperature and rainfall for September, based on 40 years of weather history.

40-year mountain climate

Typical high-ground conditions in September.

Historically, September has been one of the more demanding parts of the year on the high ground. Of 1,200 representative high-ground days, 13% were excellent or good, 61% were average, and 26% were poor or severe.

Dry days accounted for 44% of the sample, while extensive cloud affected 71%. These figures describe representative high ground around 1,345 metres, so coastal and low-level conditions can be milder.

Riverside Lodge for a September trip to Lochaber
September stays on Lochaber

Riverside Lodge

Fort William · Sleeps 11

Indicative catalogue price £1,952 for 7 nightsExact September prices and availability are checked after you choose a week.
Excellent or good13%Historically dry44%High-ground temperature4.5°CTypical maximum gust28 mphStronger days around 39 mph
Plan beyond the forecast

Choose an area and week.

Saturday dates are highlighted because they usually unlock the widest choice of seven-night cottage stays. Other arrival days still work.

Typical conditions, not a forecastThis describes representative high ground. A difficult hill day can still be suitable for a lower-level plan.
Week 37 · 12 September

What this week is typically like on Lochaber high ground.

Across 280 comparable historical hill days, 15% were excellent or good and 29% were poor or severe.

Check the live Lochaber forecast →
Historically excellent or good15%280 comparable days
Excellent2%Good13%Average56%Poor23%Severe6%
Historically dry43% of daysTypical daily max gust29 mphStronger days around 41 mphTypical high ground4.5°C24-hour mean near 1,345 mExtensive cloud69% of days

September context: 13% of days across the month were excellent or good; 26% were poor or severe. Read the full September guide.

Valley and low level for this week

Around Fort William.

Representative base · 20 m
Typical daily high15.8°CWarmer days 17.7°CHistorically dry43%43% dry with lighter windMaximum wind10 mphStronger days 14 mphTypical overnight low10.3°CCooler nights 7.8°C
Planning a different time of year?Compare Lochaber month by month
Valleys and trip bases

Low-level weather around Fort William in September.

Fort William, at roughly 20 metres, provides a practical low-level reference for Lochaber. Across 1,200 historical days, the typical daytime high was 15.8°C, with warmer days around 17.8°C.

About 44% of days were dry and 44% combined dry weather with lighter winds. Conditions vary across glens, coasts and villages, so this should be used as regional trip-planning guidance rather than a forecast for every location.

Typical daily high15.8°CWarmer days around 17.8°CTypical overnight low10.4°CCooler nights around 7.8°CHistorically dry44%18% had 10 mm+ rainTypical maximum wind10 mphStronger days around 13 mph
January to December

Lochaber weather by month.

Each month has a detailed guide comparing high-ground hill days with typical conditions at a representative valley or low-level trip base.

20 mountain areas

Compare another part of the UK.

Each page includes weekly and monthly high-ground and low-level climate summaries, a highlighted Saturday planner and nearby accommodation.