August weather forecastBay Saint Louis, MS
August
Weather in August
As the latter part of the summer season, August in Bay Saint Louis, Mississippi, continues in the same vein as July, albeit slightly warmer and with increased rainfall. Mornings and evenings can be quite hot, making it crucial to stay hydrated. The city enjoys long daylight hours and less wind, making outdoor activities comfortable. Sea temperature reaches its highest point of 86.5°F (30.3°C) permitting many to seek relief in the cool ocean waters.Temperature
With its high average temperature of 89.2°F (31.8°C) and a low of 77.9°F (25.5°C), August is regarded as the warmest month.Heat index
During August, the heat index is calculated to be a blisteringly hot 107.6°F (42°C). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.Be aware that heat index ratings are designed for shaded locations and minor breezes. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', quantifies the warmth felt when relative humidity is considered. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
The body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.
Humidity
The average relative humidity in August in Bay Saint Louis is 75%.Rainfall
August is the month with the most rainfall. Rain falls for 19.1 days and accumulates 2.2" (56mm) of precipitation.Snowfall
February through December are months without snowfall.Ocean temperature
The month with the warmest seawater is August, with an average ocean temperature of 86.5°F (30.3°C).Note: Intense water activities might lose their appeal in waters that are warmer than 86°F (30°C).
Daylight
In Bay Saint Louis, the average length of the day in August is 13h and 13min.On the first day of the month, sunrise is at 6:16 am and sunset at 7:50 pm. On the last day of August, sunrise is at 6:33 am and sunset at 7:20 pm CDT.
Sunshine
In Bay Saint Louis, the average sunshine in August is 10.9h.UV index
The months with the highest UV index in Bay Saint Louis are May through August, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index, 7 in August, converts into the following recommendations:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Be mindful! Sand and water reflections can up the Sun's UV exposure.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Bay Saint Louis, MS
- Average high temperature in August: 89.2°F
The warmest month (with the highest average high temperature) is August (89.2°F).
The month with the lowest average high temperature is January (58.8°F).
- Average low temperature in August: 77.9°F
The month with the highest average low temperature is August (77.9°F).
The coldest month (with the lowest average low temperature) is January (46.4°F).
Average pressure in August
Bay Saint Louis, MS
- Average pressure in August: 29.97"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.97"Hg).
Average wind speed in August
Bay Saint Louis, MS
- Average wind speed in August: 6.2mph
The windiest month (with the highest average wind speed) is April (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in August
Bay Saint Louis, MS
- Average humidity in August: 75%
The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is October (70%).
Average rainfall in August
Bay Saint Louis, MS
- Average rainfall in August: 2.2"
The wettest month (with the highest rainfall) is August (2.2").
The driest month (with the least rainfall) is March (0.51").
Average rainfall days in August
Bay Saint Louis, MS
- Average rainfall days in August: 19.1 days
The month with the highest number of rainy days is August (19.1 days).
The month with the least rainy days is November (4.9 days).
Average snowfall days in August
Bay Saint Louis, MS
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).
Average sea temperature in August
Bay Saint Louis, MS
- Average sea temperature in August: 86.5°F
The best month for swimming (with the highest average sea temperature) is August (86.5°F).
The coldest month (with the lowest average sea temperature) is January (56.8°F).
Average daylight in August /
Average sunshine in August
Bay Saint Louis, MS
- Average daylight in August: 13h and 12min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in August: 10h and 54min
The month with the most sunshine is June (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in August
Bay Saint Louis, MS
- Average sunshine days in August: 8 days
The month with the most sunshine days is November (23.3 days).
The month with the least sunshine days is August (8 days).
Average UV index in August
Bay Saint Louis, MS
- Average UV index in August: 7
The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January, November and December (UV index 4).
Average cloud cover in August
Bay Saint Louis, MS
- Average cloud cover in August: 27
The month with the most cloud cover is December (Cloud cover 44).
The month with the least cloud cover is October (Cloud cover 23).
Average visibility in August
Bay Saint Louis, MS
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
