Monthly climate guide
Glasgow weather in May
With highs near 13°C (55°F) and lows around 6°C (42°F), May feels cool in Glasgow. Rainfall averages about 93 mm (wet) and the sky is often cloudy. Daytime highs are 3°C warmer than April and 3°C cooler than June.
What stands out in May
- Skies are at their clearest this time of year.
- May brings late spring to Glasgow.
- Just 120 km apart, but Glasgow runs about 2°C warmer than Fort William this month.
Avg high
13°C
55°F
Avg low
6°C
42°F
Rainfall
93 mm
wet
Humidity
84%
relative
Sky
70%
cloud · often cloudy
Glasgow weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 5°C / 40°F | 1°C / 34°F | 138 mm | 95% | 81% |
| February | 5°C / 41°F | 1°C / 34°F | 117 mm | 94% | 79% |
| March | 7°C / 44°F | 2°C / 35°F | 91 mm | 91% | 77% |
| April | 10°C / 49°F | 3°C / 37°F | 71 mm | 87% | 70% |
| May | 13°C / 55°F | 6°C / 42°F | 93 mm | 84% | 70% |
| June | 16°C / 60°F | 9°C / 47°F | 108 mm | 84% | 79% |
| July | 17°C / 63°F | 10°C / 50°F | 126 mm | 85% | 76% |
| August | 16°C / 61°F | 10°C / 50°F | 137 mm | 88% | 78% |
| September | 14°C / 58°F | 8°C / 47°F | 106 mm | 90% | 74% |
| October | 11°C / 52°F | 6°C / 43°F | 140 mm | 92% | 75% |
| November | 7°C / 45°F | 3°C / 38°F | 133 mm | 95% | 73% |
| December | 6°C / 42°F | 2°C / 36°F | 161 mm | 95% | 82% |
What to pack for May
- A warm sweater or fleece for layering
- A mid-weight jacket
- A compact umbrella or packable rain jacket
- Water-resistant shoes
Is May a good time to visit Glasgow?
Compare the months in the chart above to find your ideal window.
Best time to visit Glasgow →Other United Kingdom cities in May
Cite or embed this data
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Glasgow weather in May. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/uk/glasgow/may
<a href="https://weathercompare.eu/weather/uk/glasgow/may">Glasgow weather in May</a> (WeatherCompare)
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Glasgow in May: quick answers
Is May a good time to visit Glasgow?
May is cool in Glasgow, with highs around 13°C. Better for museums and city walks than the beach, and usually quieter.
How warm is Glasgow in May?
Average highs are about 13°C (55°F) and average lows about 6°C (42°F), based on 10 years of daily data.
Does it rain a lot in Glasgow in May?
Glasgow typically gets around 93 mm of rain in May — wet.
Figures are long-term averages for the area around Glasgow (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.