Glasgow weather in May
May in Glasgow: cool, a little rain, with clean air — an excellent time to visit.
#4 of 12 months in Glasgow · #316 of 604 destinations to visit in May · comfort 81/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Glasgow climate normals — May
| Daytime high | 14°C / 57°F | 🙂 cool |
|---|---|---|
| Nighttime low | 6°C / 44°F | |
| Feels like (high) | 12°C / 54°F | |
| Rainfall | 73 mm / 2.9 in | 🌦 some rain |
| Rainy days | 14 days | |
| Humidity | 80% | 💦 very humid |
| Dew point | 8°C / 46°F | |
| Sunshine | 9.8 h/day | |
| Daylight | 16.3 h | |
| Wind | 18 km/h / 11 mph | |
| Snowfall | 0.3 cm / 0.1 in | |
| Air quality (US AQI) | 39 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Glasgow in May — FAQ
- Is May a good time to visit Glasgow?
- May in Glasgow: cool, a little rain, with clean air — an excellent time to visit. It ranks #4 of 12 months for Glasgow on SeasonMap's comfort score (81/100).
- What is the weather like in Glasgow in May?
- In May, Glasgow averages a daily high of 13.8°C and a low of 6.4°C, with about 72.9 mm of rain over roughly 14.2 rainy days.
- What is the air quality in Glasgow in May?
- Glasgow has a mean US Air Quality Index of about 39 in May.