Glasgow Weather in May
Glasgow in May sees moderate daytime temperatures of 15°C (59°F) and nighttime lows of 7°C (45°F). Rainfall is fairly high this month at around 86 mm (3.4 in), so pack a rain jacket to stay dry.
Rainfall in Glasgow in May
Historically, May sees about 17 days of rain, with a monthly average of 86 mm (3.4 in). The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in Glasgow in May
Daytime temperatures in Glasgow reach 15°C (59°F) in May, dropping to 7°C (45°F) at night. Conditions are often most pleasant around the middle of the day. Nights drop to 7°C (45°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.
Sunshine in Glasgow in May
The area enjoys a moderate level of sunlight, with around 188 hours. It's a good balance between sunny and cloudy days.If you prefer dry days with pleasant temperatures, June typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United Kingdom, check out our Glasgow's climate page.
Glasgow Temperature in May
Min Temperature
7°C (45°F)
Max Temperature
15°C (59°F)
Chance of Rain
55%
Precipitation
86 mm (3.4 in)
Rainy days
17 days
Humidity
68% *
Sunshine
188 hours *
Percentage Sunshine
37% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Glasgow typically stay consistent throughout May, with daily highs averaging around 15°C (59°F). Nights are cold, with lows typically ranging from 5°C (41°F) to 9°C (48°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather for Glasgow in May
Browse day-by-day weather records for Glasgow spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Glasgow historical weather extremes in May
Based on weather observations in Glasgow between 1976 and 2026, these are the recorded extremes during May.
- On May 13, 1980, temperatures climbed to 26°C (79°F), marking the warmest May day on record.
- Glasgow experienced its chilliest May day on May 14, 1993, reaching only 5°C (41°F).
- The lowest overnight temperature recorded in May was -3°C (27°F) (May 5, 2012).
Best Places in the United Kingdom in May
Find out more about the weather in the United Kingdom and which places have the best travel conditions in this month. See all of the United Kingdom in May →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Glasgow in May
The weather can be unpredictable in May, so pack clothes you can easily mix and match. You could bring jeans, other long pants, and a few t-shirts. A light jacket or light sweater will be pleasant for the cooler moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in Glasgow in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United Kingdom, check out our Glasgow's climate page.
Temperature Rainfall Sunshine Humidity
See the full Glasgow climate overview or explore weather in the United Kingdom.
