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Glasgow Weather in September
During September, Glasgow experiences moderate daytime temperatures of 17°C (63°F) and cooler nights around 9°C (48°F). Expect quite a bit of rainfall. Around 96 mm (3.8 in) is typical.
Rainfall in Glasgow in September
Records from the past 30 years suggest around 20 days of rain, with 96 mm (3.8 in) average for the month. This is a month with many wet days but modest rainfall totals, so showers are generally light and easy to manage.
Temperature in Glasgow in September
Daytime highs in Glasgow in September reach 17°C (63°F), with nights around 9°C (48°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. With lows around 9°C (48°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.
Sunshine in Glasgow in September
With about 117 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.For Glasgow itself, June generally stands out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Glasgow Temperature in September
Min Temperature
9°C (48°F)
Max Temperature
17°C (63°F)
Chance of Rain
65%
Precipitation
96 mm (3.8 in)
Rainy days
20 days
Humidity
79% *
Sunshine
117 hours *
Percentage Sunshine
29% *
* Data from: Glasgow, Scotland (10 KM, 6 Miles).
Glasgow Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Glasgow - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Glasgow typically stay consistent throughout September, with daily highs averaging around 17°C (63°F). Nights are cool, with lows typically ranging from 8°C (46°F) to 11°C (52°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather records for Glasgow in September
Browse day-by-day weather records for Glasgow spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Glasgow historical weather extremes in September
According to our 50 years of weather records for Glasgow, the following extremes were recorded between 1976 and 2026.
- Glasgow recorded its highest September temperature of 28°C (82°F) on September 8, 2023.
- On September 21, 1985, Glasgow saw its coldest September day with temperatures maxing out at 9°C (48°F).
- Nighttime temperatures dropped to -1°C (30°F) on September 28, 1993, marking the coldest September night on record.
Best Places in the United Kingdom in September
Find out more about the weather in the United Kingdom and which places have the best travel conditions in this month. See all of the United Kingdom in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Glasgow in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.
What To Do in Glasgow in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming6/10 -
Cycling6/10 -
Walking6/10 -
Camping4/10 -
Outdoor sports9/10
Glasgow 3-Day Forecast
More climate data for Glasgow
Temperature Rainfall Sunshine Humidity
See the full Glasgow climate overview or explore weather in the United Kingdom.
Popular in September
Where to go in September - average daytime high across popular destinations.
London
20°C (68°F) Bath19°C (66°F) Torquay19°C (66°F) Manchester
18°C (64°F) York19°C (66°F) Edinburgh17°C (63°F) Blackpool17°C (63°F) Glasgow17°C (63°F) Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Hike the South West Coast Path
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