Glasgow, United Kingdom skyline

Glasgow Weather in September

The usual September conditions in Glasgow, United Kingdom, drawn from 2006–2025 records.

Glasgow in September: highs near 15.6°C (60.1°F), lows near 9.5°C (49.1°F), roughly 14 rainy days adding up to 92 mm, and 7 hours of sunshine on an average day.

Avg high

15.6°C (60.1°F)

Avg low

9.5°C (49.1°F)

Rainfall

92 mm (3.6 in)

Rainy days

14 days

Sunshine

7 h / day

Humidity

83%

September vs the rest of the year

Only 3 months are warmer than September in Glasgow; for rain it is the 5th driest month.

MonthAvg highvs SeptemberRainRainy days
January5.9°C (42.6°F)−9.7°C (−17.5°F)114 mm16
February6.8°C (44.2°F)−8.8°C (−15.8°F)101 mm15
March8.5°C (47.3°F)−7.1°C (−12.8°F)92 mm15
April11.3°C (52.3°F)−4.3°C (−7.7°F)63 mm12
May14.4°C (57.9°F)−1.2°C (−2.2°F)86 mm15
June16.7°C (62.1°F)+1.1°C (+2°F)87 mm15
July18.1°C (64.6°F)+2.5°C (+4.5°F)109 mm17
August17.3°C (63.1°F)+1.7°C (+3.1°F)122 mm18
September15.6°C (60.1°F)—92 mm14
October12.3°C (54.1°F)−3.3°C (−5.9°F)124 mm17
November8.5°C (47.3°F)−7.1°C (−12.8°F)112 mm16
December6.4°C (43.5°F)−9.2°C (−16.6°F)129 mm18

What September feels like in Glasgow

For Glasgow, September is early autumn on the calendar. Days are on the cool side, the kind of weather that suits brisk sightseeing. There is little difference between day and night: nights are cool, and evenings feel much like the afternoon. Damp air makes the cold feel rawer than the numbers alone suggest.

Rain in Glasgow in September

Rain is part of normal life this month, falling on about every other day. A rainy day brings about 6.6 mm (0.3 in) on average — steady rain rather than a passing shower. That is close to Glasgow's typical rain per wet day for the whole year (about 6.5 mm).

Daylight and sunshine in September

In mid-September, sunrise is at about 6:47 am and sunset at about 7:38 pm (local time) — 12 h 51 min of daylight. Compared with mid-August, the day has lost 2 h 18 min. The sun is out for roughly 54% of those daylight hours, so sun and cloud share the day.

How September compares to the rest of the year

September is the 4th warmest month of the year in Glasgow. Compared with August, afternoons are 1.7°C (3.1°F) cooler, with 30 mm less rain. The cooling trend carries on into October. By October, typical highs are 12.3°C (54.1°F).

Who September suits

  • Sightseeing: a good fit — comfortable enough to explore on foot all day.
  • Parks & outdoor: a good fit — good conditions for sitting outside.
  • Hiking: less ideal — trails are cool.

Tips for visiting Glasgow in September

Rain Protection

Keep a small umbrella in your bag and wear shoes that cope with puddles.

Light Jacket

Bring a sweater or light coat for cool afternoons.

Sunglasses

Frequent sunshine — sunglasses and a light hat.

Quick questions

How warm is Glasgow in September?

It feels cool: typical highs are 15.6°C (60.1°F), with lows near 9.5°C (49.1°F).

Does it rain a lot in Glasgow in September?

Quite a lot — 92 mm spread over about 14 days.

What should I wear in Glasgow in September?

Pack rain protection, a light jacket and sunglasses. There is little need to change for the evening.

Is September or October better for visiting Glasgow?

September, clearly: it ranks #1 of 12 among Glasgow's months, against #5 for the other. October is cooler and has more rainy days.

Is September a good time to visit Glasgow?

Good

Good — mild but cool days, frequent rain (about 14 rainy days). Within Glasgow's own year, September ranks #1 of 12 — one of the 3 best months to visit.

September in other United Kingdom cities

Warmer or drier places in September

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Monthly averages from 20 years of Open-Meteo history (2006–2025), not a forecast — see all 12 months in Glasgow weather by month.