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May Weather in Bay Saint Louis, United States

Last updated: June 24, 2025

In May, the average temperature in Bay Saint Louis, United States hovers around 24°C (76°F), making it a pleasant time to visit. Expect a minimum of 15°C (58°F) and a maximum of 29°C (85°F), providing a comfortable range for outdoor activities. However, be prepared for some rain, as 138 mm (5.4 in) of precipitation can occur over 12 days. On top of that, the average humidity sits at a whopping 73%, contributing to the overall warm atmosphere.

May Temperature in Bay Saint Louis

In May in Bay Saint Louis, the average temperature is 24°C (76°F). Maximums can reach 29°C (85°F), and minimums can drop as low as 15°C (58°F). This comfortable climate makes Bay Saint Louis an ideal destination for outdoor activities and sightseeing.

May Weather in Bay Saint Louis: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Bay Saint Louis, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bay Saint Louis, May typically has an average temperature of 24°C (76°F), with highs reaching up to 29°C (85°F) and lows dropping to around 15°C (58°F).
JanFebMarAprMayJunJulAugSepOctNovDec545864697681828280746357
Data source: Temperature data for Bay Saint Louis 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 Bay Saint Louis

In Bay Saint Louis in May, the precipitation amount is 138 mm (5.4 in) spread over a period of 12 days.

May Precipitation Trends in Bay Saint Louis

The chart displays monthly precipitation patterns in Bay Saint Louis, 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 Bay Saint Louis, May typically receives around 138 mm (5.4 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec1071228912613827920024015613359120
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Bay Saint Louis

In Bay Saint Louis in May humidity is 73%. With an average temperature of 24°C (76°F), this humidity feels like a warm and sticky embrace, making travel slightly uncomfortable as the air thickens around you, prompting you to seek shade and stay hydrated.

May Average Humidity in Bay Saint Louis

This chart illustrates the average monthly humidity levels in Bay Saint Louis, 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 Bay Saint Louis is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%80%80%78%73%71%79%78%80%76%83%87%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Bay Saint Louis

In Bay Saint Louis 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 Bay Saint Louis.

Maximum UV Index Levels in Bay Saint Louis for May

The chart shows the monthly maximum UV Index (UVI) for Bay Saint Louis 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 Bay Saint Louis typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec589111111121110864
Data source: Bay Saint Louis 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 Bay Saint Louis Compares to Other Months

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

This table compares monthly weather conditions in Bay Saint Louis, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather12°C (54°F)107 mm (4.2 inches)82%moderate
February Weather15°C (59°F)122 mm (4.8 inches)80%very high
March Weather18°C (64°F)89 mm (3.5 inches)80%very high
April Weather20°C (69°F)126 mm (4.9 inches)78%extreme
May Weather24°C (76°F)138 mm (5.4 inches)73%extreme
June Weather27°C (81°F)279 mm (11.0 inches)71%extreme
July Weather28°C (82°F)200 mm (7.9 inches)79%extreme
August Weather28°C (83°F)239 mm (9.4 inches)78%extreme
September Weather27°C (80°F)155 mm (6.1 inches)80%very high
October Weather23°C (75°F)133 mm (5.2 inches)76%very high
November Weather17°C (63°F)59 mm (2.3 inches)83%high
December Weather14°C (58°F)120 mm (4.7 inches)87%moderate

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