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May Weather in Glasgow, United States

Last updated: June 24, 2025

In Glasgow, United States, the average temperature in May hovers around 21°C (69°F). You can expect a range from a cool 3°C (37°F) to a warm 34°C (94°F). During this month, the region experiences about 123 mm (4.8 in) of precipitation over approximately 12 days, contributing to an average humidity level of 82%.

May Temperature in Glasgow

In May in Glasgow, the average temperature is 21°C (69°F). Maximums can reach 34°C (94°F), while minimums can drop as low as 3°C (37°F). This diverse temperature range makes Glasgow an ideal destination for travelers seeking both warm days and cooler nights.

May Weather in Glasgow: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Glasgow, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Glasgow, May typically has an average temperature of 21°C (69°F), with highs reaching up to 34°C (94°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec384350586976807773624743
Data source: Temperature data for Glasgow generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Glasgow

In Glasgow in May, the precipitation amount is 123 mm (4.8 in) during a period of 12 days.

May Precipitation Trends in Glasgow

The chart displays monthly precipitation patterns in Glasgow, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Glasgow, May typically receives around 123 mm (4.8 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec10218414515712316411712912914192145
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Glasgow

In Glasgow in May humidity is 82%. With an average temperature of 21°C (69°F), this humidity feels like a sweltering embrace, making outdoor activities feel more strenuous and prompting travelers to seek shade and cooling breezes.

May Average Humidity in Glasgow

This chart illustrates the average monthly humidity levels in Glasgow, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Glasgow is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%86%82%83%83%80%74%71%78%88%88%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Glasgow

In Glasgow in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Glasgow.

Maximum UV Index Levels in Glasgow for May

The chart shows the monthly maximum UV Index (UVI) for Glasgow in May, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In May, the maximum UV index in Glasgow typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3679101111109753
Data source: Glasgow May UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How May Weather in Glasgow Compares to Other Months

Weather in Glasgow varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Glasgow, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Glasgow, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)102 mm (4.0 inches)87%moderate
February Weather6°C (43°F)184 mm (7.3 inches)86%high
March Weather10°C (51°F)145 mm (5.7 inches)86%high
April Weather14°C (58°F)157 mm (6.2 inches)82%very high
May Weather21°C (69°F)123 mm (4.8 inches)82%very high
June Weather24°C (76°F)164 mm (6.5 inches)83%extreme
July Weather26°C (80°F)117 mm (4.6 inches)80%extreme
August Weather25°C (78°F)129 mm (5.1 inches)74%very high
September Weather23°C (73°F)129 mm (5.1 inches)71%very high
October Weather17°C (62°F)141 mm (5.6 inches)78%high
November Weather8°C (47°F)92 mm (3.6 inches)88%moderate
December Weather6°C (44°F)145 mm (5.7 inches)88%moderate

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