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May Weather in Bristol, United States

Last updated: June 24, 2025

In May, the average temperature in Bristol, United States hovers around 18°C (66°F). However, temperatures can vary significantly, with minimums dropping to 1°C (34°F) and maximums soaring to 31°C (89°F). The month also sees 106 mm (4.2 in) of precipitation spread across approximately 14 days, contributing to an average humidity level of 83%.

May Temperature in Bristol

In May in Bristol, the average temperature is 18°C (66°F), with maximums reaching 31°C (89°F) and minimums dropping as low as 1°C (34°F). This diverse temperature range makes Bristol an exciting destination for travelers, offering both warm days and cooler evenings to enjoy.

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

The chart illustrates May temperature patterns in Bristol, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bristol, May typically has an average temperature of 18°C (66°F), with highs reaching up to 31°C (89°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec384449566571757470604642
Data source: Temperature data for Bristol 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 Bristol

In Bristol in May, the precipitation amount is 106 mm (4.2 in) over a period of 14 days.

May Precipitation Trends in Bristol

The chart displays monthly precipitation patterns in Bristol, 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 Bristol, May typically receives around 106 mm (4.2 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec971451241291069671868011078123
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Bristol

In Bristol in May, humidity is 83%. With an average temperature of 18°C (66°F), this humidity feels like a warm, thick blanket enveloping you, making it a bit uncomfortable for traveling as you may need to take frequent breaks to cool down and stay hydrated.

May Average Humidity in Bristol

This chart illustrates the average monthly humidity levels in Bristol, 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 Bristol is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%86%84%83%83%79%66%68%78%89%86%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Bristol

In Bristol in May, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Bristol.

Maximum UV Index Levels in Bristol for May

The chart shows the monthly maximum UV Index (UVI) for Bristol 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 Bristol typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111010853
Data source: Bristol 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 Bristol Compares to Other Months

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

This table compares monthly weather conditions in Bristol, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (39°F)97 mm (3.8 inches)87%moderate
February Weather7°C (44°F)145 mm (5.7 inches)87%high
March Weather9°C (49°F)124 mm (4.9 inches)86%very high
April Weather13°C (56°F)129 mm (5.1 inches)84%very high
May Weather18°C (66°F)106 mm (4.2 inches)83%extreme
June Weather22°C (71°F)96 mm (3.8 inches)83%extreme
July Weather24°C (76°F)71 mm (2.8 inches)79%extreme
August Weather23°C (74°F)86 mm (3.4 inches)66%very high
September Weather21°C (70°F)80 mm (3.1 inches)68%very high
October Weather16°C (60°F)110 mm (4.3 inches)78%very high
November Weather8°C (46°F)78 mm (3.1 inches)89%moderate
December Weather6°C (42°F)123 mm (4.8 inches)86%moderate

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