Glasgow weather by month & the best time to visit
United Kingdom · city break · oceanic / maritime climate
The best time to visit Glasgow is July — its sunniest month (Sunshine Score 55/100), with August and June close behind. Glasgow averages about 1,304 hours of sunshine a year. Daytime highs around 18°C / 64°F and roughly 111 mm of rain in July.
When is the best time to visit Glasgow?
For sunshine, the best time to visit Glasgow is July, then August and June. The dullest month is January (0/100, 127 mm of rain). The full month-by-month picture is in the table below.
How sunny is Glasgow?
Glasgow isn't a sunny place by world standards: about 1,304 hours of sunshine a year. 55 Sunshine Score points separate July (55) from January (0), so the month you pick matters. It ranks #28 of 48 destinations in United Kingdom for annual sunshine, below the national median of 1,345 hours. The year's 1,268 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 0 | 6° / 43°F | 3° / 37°F | 127 mm | 0 | 9° / 48°F |
| February | 0 | 6° / 43°F | 3° / 37°F | 96 mm | 1 | 9° / 48°F |
| March | 0 | 8° / 46°F | 3° / 37°F | 86 mm | 1 | 9° / 48°F |
| April | 18 | 11° / 52°F | 5° / 41°F | 69 mm | 3 | 10° / 50°F |
| May | 36 | 14° / 57°F | 7° / 45°F | 81 mm | 4 | 13° / 55°F |
| June | 51 | 17° / 63°F | 10° / 50°F | 96 mm | 4 | 13° / 55°F |
| July | 55 | 18° / 64°F | 12° / 54°F | 111 mm | 4 | 15° / 59°F |
| August | 53 | 18° / 64°F | 12° / 54°F | 123 mm | 3 | 15° / 59°F |
| September | 45 | 16° / 61°F | 10° / 50°F | 99 mm | 2 | 15° / 59°F |
| October | 21 | 12° / 54°F | 8° / 46°F | 131 mm | 1 | 13° / 55°F |
| November | 5 | 9° / 48°F | 5° / 41°F | 124 mm | 0 | 12° / 54°F |
| December | 0 | 7° / 45°F | 4° / 39°F | 125 mm | 0 | 10° / 50°F |
Sea temperature in Glasgow by month
The sea off Glasgow is warmest in July at around 15°C / 59°F, and coolest in January at 9°C / 48°F. It never reaches comfortable swimming temperatures (21°C+). Month-by-month sea-surface temperatures are in the Sea column of the table above.
Nearest destinations
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Glasgow: questions and answers
What kind of destination is Glasgow?
Glasgow is a city break in United Kingdom with a oceanic / maritime climate — the sea reaches 15°C at its warmest.
How many hours of sunshine does Glasgow get a year?
Glasgow gets about 1,304 hours of sunshine a year, at its best around July.
When is the best time to visit Glasgow?
The sunniest time to visit Glasgow is July, when the Sunshine Score peaks at 55/100 (with August and June close behind). Expect daytime highs around 18°C / 64°F.
What is the least sunny month in Glasgow?
January is the least sunny month in Glasgow, scoring 0/100 with about 127 mm of rain.
What is the sea temperature in Glasgow?
The sea in Glasgow ranges from about 9°C (January) to 15°C (July). Month-by-month sea temperatures are on this page.
How strong is the sun in Glasgow?
The typical midday UV index in Glasgow peaks around 4 (moderate) in May, easing to about 0 (low) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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