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Glasgow, Scotland Weather by Month and Climate Averages
Monthly normals · Rain · Snow
Sunshine · Freeze dates · Records · Best time to visit
What is the weather like in Glasgow, Scotland?
Glasgow, Scotland gets 1041 mm of precipitation a year over about 228 rainy days. July is the warmest month (average high 19°C) and January the coldest (average low 2°C).
Oceanic climate
Glasgow, Scotland has mild summers and chilly winters. Daytime highs range from about 7°C in January to 19°C in July. December is usually the wettest month. The most comfortable time to visit is typically June to August, when daytime highs sit near 18°C.
| Season | Months | Avg low | Avg high |
|---|---|---|---|
| Winter | Dec–Feb | 2° | 8° |
| Spring | Mar–May | 4° | 12° |
| Summer | Jun–Aug | 11° | 18° |
| Autumn | Sep–Nov | 7° | 13° |
How much rain does Glasgow get?
Glasgow gets 1041 mm of precipitation in an average year, spread over about 228 days with measurable rain. That is more rainy days than 82% of the UK.
December is the wettest month, with 115 mm. May is the driest, with 53 mm. December has the most rainy days, about 23.
The longest dry spell in the last five years lasted 20 days, to June 9, 2023.
From October 2025 to September 2026 Glasgow got 942 mm of rain, against a normal of 1041 mm for those months. October 2025 had the most, with 146 mm.
Glasgow weather by month
Glasgow weather in January
In January, Glasgow averages a high of 7°C and a low of 2°C. It gets 101 mm of precipitation over about 22 rainy days. Estimated sunshine is 26% of daylight hours, derived from ERA5 cloud cover. The January record high is 13°C (2020) and the record low is -12°C (1979).
Glasgow weather in February
In February, Glasgow averages a high of 8°C and a low of 2°C. It gets 93 mm of precipitation over about 20 rainy days. Estimated sunshine is 21% of daylight hours, derived from ERA5 cloud cover. The February record high is 15°C (1998) and the record low is -13°C (1986).
Glasgow weather in March
In March, Glasgow averages a high of 9°C and a low of 3°C. It gets 74 mm of precipitation over about 19 rainy days. Estimated sunshine is 27% of daylight hours, derived from ERA5 cloud cover. The March record high is 19°C (2012) and the record low is -8°C (1986).
Glasgow weather in April
In April, Glasgow averages a high of 12°C and a low of 4°C. It gets 57 mm of precipitation over about 17 rainy days. Estimated sunshine is 35% of daylight hours, derived from ERA5 cloud cover. The April record high is 23°C (2003) and the record low is -5°C (2022).
Glasgow weather in May
In May, Glasgow averages a high of 15°C and a low of 7°C. It gets 53 mm of precipitation over about 15 rainy days. Estimated sunshine is 27% of daylight hours, derived from ERA5 cloud cover. The May record high is 27°C (2012) and the record low is -3°C (1996).
Glasgow weather in June
In June, Glasgow averages a high of 17°C and a low of 9°C. It gets 68 mm of precipitation over about 16 rainy days. Estimated sunshine is 26% of daylight hours, derived from ERA5 cloud cover. The June record high is 31°C (2026) and the record low is 0°C (1991). June is one of the most comfortable months to visit.
Glasgow weather in July
In July, Glasgow averages a high of 19°C and a low of 12°C. It gets 86 mm of precipitation over about 18 rainy days. Estimated sunshine is 22% of daylight hours, derived from ERA5 cloud cover. The July record high is 30°C (2003) and the record low is 4°C (1971). July is one of the most comfortable months to visit.
Glasgow weather in August
In August, Glasgow averages a high of 18°C and a low of 11°C. It gets 88 mm of precipitation over about 18 rainy days. Estimated sunshine is 27% of daylight hours, derived from ERA5 cloud cover. The August record high is 30°C (1975) and the record low is 2°C (2010). August is one of the most comfortable months to visit.
Glasgow weather in September
In September, Glasgow averages a high of 16°C and a low of 9°C. It gets 81 mm of precipitation over about 18 rainy days. Estimated sunshine is 26% of daylight hours, derived from ERA5 cloud cover. The September record high is 28°C (2023) and the record low is -1°C (1979).
Glasgow weather in October
In October, Glasgow averages a high of 13°C and a low of 7°C. It gets 110 mm of precipitation over about 21 rainy days. Estimated sunshine is 20% of daylight hours, derived from ERA5 cloud cover. The October record high is 21°C (1973) and the record low is -5°C (1993).
Glasgow weather in November
In November, Glasgow averages a high of 10°C and a low of 4°C. It gets 114 mm of precipitation over about 22 rainy days. Estimated sunshine is 24% of daylight hours, derived from ERA5 cloud cover. The November record high is 17°C (1971) and the record low is -8°C (2010).
Glasgow weather in December
In December, Glasgow averages a high of 8°C and a low of 2°C. It gets 115 mm of precipitation over about 23 rainy days. Estimated sunshine is 21% of daylight hours, derived from ERA5 cloud cover. The December record high is 15°C (2025) and the record low is -11°C (2010).
Sunshine, humidity and wind in Glasgow
April is the sunniest month in Glasgow, with estimated sunshine of 35% of daylight hours from ERA5 cloud cover. October is the cloudiest, at 20%. The annual cloud-cover estimate is 25% of daylight hours; it is not a measurement of sunshine duration. Glasgow is cloudier than 81% of the UK.
Humidity peaks in December at 89% and is lowest in April at 73%.
First and last freeze in Glasgow
The first fall freeze in Glasgow typically comes around October 30, and the last spring freeze around April 28. That leaves a frost-free growing season of about 185 days.
Glasgow weather records
These records cover AUCHINCRUIVE during 1970–2026. Earlier records or other stations in the city may differ.
The hottest temperature on record at the Glasgow station is 31°C, on June 24, 2026. The coldest is -13°C, on February 22, 1986.
The wettest day in the available station history brought 74 mm of precipitation, on July 14, 2010.
34 all-time records have been set at the station since 1970.
The annual mean temperature has changed by +0.2°C per decade since 1970.
The best time to visit Glasgow
The most comfortable time to visit is typically June to August, when daytime highs sit near 18°C.
Winter (December–February) is chilly, with average highs around 8°C and lows near 2°C.
Spring (March–May) is chilly, with average highs around 12°C and lows near 5°C.
Summer (June–August) is mild, with average highs around 18°C and lows near 11°C. It can feel humid.
Autumn (September–November) is mild, with average highs around 13°C and lows near 7°C.
Monthly climate
| Month | Average low | Average high | Precip | Rain days | Humidity | Estimated sunshine | Record high | Record low |
|---|---|---|---|---|---|---|---|---|
| January | 2° | 7° | 101 mm | 22 | 87% | 26% | 13° | -12° |
| February | 2° | 8° | 93 mm | 20 | 84% | 21% | 15° | -13° |
| March | 3° | 9° | 74 mm | 19 | 80% | 27% | 19° | -8° |
| April | 4° | 12° | 57 mm | 17 | 73% | 35% | 23° | -5° |
| May | 7° | 15° | 53 mm | 15 | 77% | 27% | 27° | -3° |
| June | 9° | 17° | 68 mm | 16 | 76% | 26% | 31° | 0° |
| July | 12° | 19° | 86 mm | 18 | 80% | 22% | 30° | 4° |
| August | 11° | 18° | 88 mm | 18 | 81% | 27% | 30° | 2° |
| September | 9° | 16° | 81 mm | 18 | 83% | 26% | 28° | -1° |
| October | 7° | 13° | 110 mm | 21 | 86% | 20% | 21° | -5° |
| November | 4° | 10° | 114 mm | 22 | 87% | 24% | 17° | -8° |
| December | 2° | 8° | 115 mm | 23 | 89% | 21% | 15° | -11° |
Station: AUCHINCRUIVE, 47 km from the city. Temperature normal baseline: 1991–2020, calculated from available NOAA GHCN-Daily observations. Available station history: 1970–2026; record values refer to this station and period, not the entire city’s history. Precipitation includes rain and the water equivalent of frozen precipitation; snowfall depth is shown separately when available. Sources and methods
From ERA5 reanalysis. Sunshine is estimated from cloud cover.
Glasgow climate questions
How much rain does Glasgow get?
Glasgow gets 1041 mm of precipitation in an average year, over about 228 rainy days.
What is the wettest month in Glasgow?
December is the wettest month in Glasgow, with 115 mm. May is the driest, with 53 mm.
How many rainy days does Glasgow have a year?
Glasgow has about 228 days with measurable rain in an average year. December has the most, about 23.
What is the hottest month in Glasgow?
July is the warmest month in Glasgow, with an average high of 19°C.
What is the coldest month in Glasgow?
January is the coldest month in Glasgow, with an average low of 2°C.
What is the record high temperature in Glasgow?
Within the available 1970–2026 station history, the record high at the Glasgow station is 31°C, set on June 24, 2026. The record low is -13°C, on February 22, 1986.
What is the sunniest month in Glasgow?
April is the sunniest month in Glasgow, with estimated sunshine of 35% of daylight hours from ERA5 cloud cover. October is the cloudiest.
When is the first frost in Glasgow?
The first fall freeze in Glasgow typically comes around October 30. The last spring freeze is around April 28.
What is the best time to visit Glasgow?
The most comfortable time to visit is typically June to August, when daytime highs sit near 18°C.