Home › Cities › United Kingdom › Scotland › Glasgow

Glasgow, Scotland climate

Cfb Oceanic / temperate

Glasgow has a mildly seasonal cool-temperate climate (Oceanic / temperate, Köppen Cfb). The hottest month is July with an average daily high near 68°F, while the coldest is December averaging around 34°F at night. Around 48 inches of precipitation falls each year, peaking in January (5.8 inches) and easing off in May (2.5 inches). At latitude 56°N, day length swings from 6.7 hours in midwinter to 17.3 hours at midsummer.

☀️ Summers

Mild

Highs near 68°F in July.

❄️ Winters

Chilly

Lows near 34°F in December.

About 40 freezing nights a year

🌧️ Rain

Wet

About 48 in of rain a year.

Wettest in January

⛅ Sky & trend

Often grey

Overcast skies dominate much of the year.

+0.7 °F vs 50 years ago

Temperature & precipitation

Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figures

Clear vs cloudy days

Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day counts

Glasgow climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	45	46	50	55	61	65	68	67	62	55	49	45
Avg temp (°F)	40	41	44	48	53	58	61	60	56	50	44	39
Avg low (°F)	35	36	38	41	45	50	54	53	50	44	39	34
Precipitation (in)	5.8	4.4	4.0	2.8	2.5	2.7	3.0	3.6	3.9	5.3	5.2	5.3

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°F)	45	46	50	55	61	65
Avg temp (°F)	40	41	44	48	53	58
Avg low (°F)	35	36	38	41	45	50
Precipitation (in)	5.8	4.4	4.0	2.8	2.5	2.7

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	68	67	62	55	49	45
Avg temp (°F)	61	60	56	50	44	39
Avg low (°F)	54	53	50	44	39	34
Precipitation (in)	3.0	3.6	3.9	5.3	5.2	5.3

How often — frequency of weather events

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	21	18	19	16	14	14	15	16	17	19	20	19
Days with low ≤ 32°F (days)	9	8	5	1	0.1	—	—	—	—	1	4	10

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Days with measurable rain (days)	21	18	19	16	14	14
Days with low ≤ 32°F (days)	9	8	5	1	0.1	—

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	15	16	17	19	20	19
Days with low ≤ 32°F (days)	—	—	—	1	4	10

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	77	75	75	73	71	78	78	77	74	75	75	75
Clear days (≤ 30% cloud)	2	2	1	2	3	2	2	0.9	2	1	1	2
Partly cloudy days (30–70%)	8	8	10	8	9	6	7	8	9	9	9	9
Cloudy days (≥ 70%)	22	18	20	19	19	22	23	22	20	21	20	20
Relative humidity (%)	95	94	91	88	84	84	86	87	89	92	94	95
Wind speed (mph)	9.9	9.9	9.5	8.3	7.8	7.2	6.8	6.9	7.6	8.2	8.6	8.8

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	77	75	75	73	71	78
Clear days (≤ 30% cloud)	2	2	1	2	3	2
Partly cloudy days (30–70%)	8	8	10	8	9	6
Cloudy days (≥ 70%)	22	18	20	19	19	22
Relative humidity (%)	95	94	91	88	84	84
Wind speed (mph)	9.9	9.9	9.5	8.3	7.8	7.2

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	78	77	74	75	75	75
Clear days (≤ 30% cloud)	2	0.9	2	1	1	2
Partly cloudy days (30–70%)	7	8	9	9	9	9
Cloudy days (≥ 70%)	23	22	20	21	20	20
Relative humidity (%)	86	87	89	92	94	95
Wind speed (mph)	6.8	6.9	7.6	8.2	8.6	8.8

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 20 years of daily observations at Paisley, a weather station, about 11 km from the city centre. The underlying daily records come from NOAA's global station network.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

How we build these numbers →