July weather forecast
Bay Saint Louis, MS

Bay Saint Louis, Mississippi, bathes in peak summer heat during July. The city experiences high temperatures along with maximum days of rainfall, a drastic difference from the cooler, dry June. July is the year's most humid month, helping maintain the lush green landscapes the city is known for. Despite the high rainfall days of 17.3, there's plenty of sunshine to be enjoyed. Leaving all other months behind, July boasts the highest sea temperature of 86.2°F (30.1°C).

Temperature

The weather in Bay Saint Louis during July records an average high-temperature of a still tropical 89.1°F (31.7°C), closely mirroring the preceding month. Bay Saint Louis's nighttime temperature in July falls to an average of 77.5°F (25.3°C).

Heat index

July's heat index is appraised at a blisteringly hot 105.8°F (41°C). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.
Understanding the heat index involves considering values for shaded locales with light wind. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is the outcome of merging air's temperature and its humidity metrics. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

In July, the average relative humidity is 75%.

Rainfall

In Bay Saint Louis, in July, during 17.3 rainfall days, 1.93" (49mm) of precipitation is typically accumulated. Throughout the year, there are 131.5 rainfall days, and 12.01" (305mm) of precipitation is accumulated.

Snowfall

In Bay Saint Louis, Mississippi, snow does not fall in February through December.

Ocean temperature

In Bay Saint Louis, the average seawater temperature in July is 86.2°F (30.1°C).
Note: Some argue that temperatures over 86°F (30°C) do not offer the same refreshing water experience.

Daylight

In Bay Saint Louis, the average length of the day in July is 13h and 53min.
On the first day of July, sunrise is at 5:59 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 6:15 am and sunset at 7:51 pm CDT.

Sunshine

The average sunshine in July in Bay Saint Louis, Mississippi, is 10.8h.

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 unprotected exposure to Sun's UV rays for the ordinary person.
Note: In July, a regular UV index of 7 translates into these guidelines:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Heads up! UV intensity is amplified by reflections from water and sand.