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August Weather in Bay Saint Louis, United States

Last updated: June 24, 2025

In August, the average temperature in Bay Saint Louis, United States is a warm 28°C (83°F), ranging from a minimum of 24°C (75°F) to a maximum of 33°C (91°F). During this time, expect significant precipitation, with an average of 239 mm (9.4 in) spread over 20 days. The average humidity sits at a high 78%, making for a decidedly tropical atmosphere.

August Temperature in Bay Saint Louis

In August in Bay Saint Louis, the average temperature is 28°C (83°F). The maximum can reach 33°C (91°F), while the minimum can dip to 24°C (75°F). This pleasant weather makes it an ideal time for outdoor activities and sightseeing in Bay Saint Louis.

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

The chart illustrates August 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, August typically has an average temperature of 28°C (83°F), with highs reaching up to 33°C (91°F) and lows dropping to around 24°C (75°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.

August Precipitation in Bay Saint Louis

In Bay Saint Louis in August, the precipitation amount is 239 mm (9.4 in) recorded over a span of 20 days.

August Precipitation Trends in Bay Saint Louis

The chart displays monthly precipitation patterns in Bay Saint Louis, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Bay Saint Louis, August typically receives around 239 mm (9.4 inches) of precipitation spread over approximately 20 days.
JanFebMarAprMayJunJulAugSepOctNovDec1071228912613827920024015613359120
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Bay Saint Louis

In Bay Saint Louis in August, humidity is 78%. With an average temperature of 28°C (83°F), this humidity feels like a heavy blanket enveloping you, making outdoor activities perspire more quickly and requiring frequent breaks in the shade for comfort.

August Average Humidity in Bay Saint Louis

This chart illustrates the average monthly humidity levels in Bay Saint Louis, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Bay Saint Louis is approximately 78%, 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 August generated using information from the Copernicus Climate Change Service.

August UV Index in Bay Saint Louis

In Bay Saint Louis in August, 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 August

The chart shows the monthly maximum UV Index (UVI) for Bay Saint Louis in August, 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 August, the maximum UV index in Bay Saint Louis typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec589111111121110864
Data source: Bay Saint Louis August 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 August 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 August’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 August’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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