May weather forecast
Bay Saint Louis, MS

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Weather in May

May indicates that Bay Saint Louis, Mississippi, is moving from spring to summer. Though warmer than April, May still maintains a comfortable climate, making for an agreeable mix of warmth and cool. The city experiences the highest annual relative humidity of 75%, bringing a sense of moisture to the air. With 13.7 daily daylight hours, it marks the start of the long, languid summer days. The sea temperature in May leaps to a refreshing 77.6°F (25.3°C), perfect for a variety of water sports.

Temperature

Observing a minor shift, the average high-temperature in Bay Saint Louis during May adjusts from April's 75.6°F (24.2°C) to a still warm 81.7°F (27.6°C). Throughout the month of May, the nighttime temperature dips to an average of 69.8°F (21°C).

Heat index

In May, the average heat index is appraised at a hot 86°F (30°C). Ongoing exposure and activity could lead to a state of exhaustion, with a chance of heat cramps.
Heat index details are generally centered around shaded locations and a mild breeze. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. 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 hold great significance to children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.

Humidity

In May, the average relative humidity in Bay Saint Louis is 75%.

Rainfall

In Bay Saint Louis, during May, the rain falls for 10.8 days and regularly aggregates up to 0.98" (25mm) of precipitation. In Bay Saint Louis, during the entire year, the rain falls for 131.5 days and collects up to 12.01" (305mm) of precipitation.

Snowfall

February through December are months without snowfall in Bay Saint Louis.

Ocean temperature

In May, the average ocean temperature in Bay Saint Louis is 77.5°F (25.3°C).
Note: Water activities in surface temperatures between 77°F (25°C) and 84.2°F (29°C) are seen as exceptional and extremely agreeable for lengthened time spans.

Daylight

In Bay Saint Louis, the average length of the day in May is 13h and 41min.
On the first day of the month, sunrise is at 6:13 am and sunset at 7:35 pm. On the last day of May, in Bay Saint Louis, sunrise is at 5:55 am and sunset at 7:54 pm CDT.

Sunshine

The average sunshine in May is 10.8h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: In May, the maximum UV index of 7 suggests this advice:
Deflect overexposure. Sun protection is a necessity. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Heads up! The reflection of sand and water notably intensifies UV rays from the Sun.
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Frequently asked questions

What is the temperature in May in Bay Saint Louis?

The average high-temperature and low-temperature during May are 81.7°F (27.6°C) and 69.8°F (21°C) respectively. The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in May is appraised at 86°F (30°C).

What is the average humidity in May in Bay Saint Louis?

In May, the average relative humidity is 75%.

How many days does it rain in May in Bay Saint Louis?

In Bay Saint Louis, Mississippi, in May, during 10.8 rainfall days, 0.98" (25mm) of precipitation is typically accumulated.

When it does not snow in Bay Saint Louis?

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

What is the ocean temperature in May in Bay Saint Louis?

In May, the average ocean temperature is 77.5°F (25.3°C). For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

How many hours of daylight does Bay Saint Louis have in May?

In Bay Saint Louis, the average day length in May is 13h and 41min.

What time are sunrise and sunset in May in Bay Saint Louis?

In May, on the first day of the month, sunrise is at 6:13 am and sunset at 7:35 pm. On the last day of the month, in Bay Saint Louis, sunrise is at 5:55 am and sunset at 7:54 pm CDT.

How many hours of sunshine does Bay Saint Louis have in May?

The average sunshine duration in May in Bay Saint Louis is 10.8h.

What are the months with the highest UV index in Bay Saint Louis?

May through August, with an average maximum UV index of 7, are months with the highest UV index in Bay Saint Louis.

What is the UV index reading in May in Bay Saint Louis?

In Bay Saint Louis, Mississippi, the average daily maximum UV index in May is 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Bay Saint Louis, MS

Average temperature in May - Bay Saint Louis, MS
  • Average high temperature in May: 81.7°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 May: 69.8°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).

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Average pressure in May
Bay Saint Louis, MS

Average pressure in May - Bay Saint Louis, MS
  • Average pressure in May: 30"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).

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Average wind speed in May
Bay Saint Louis, MS

Average wind speed in May - Bay Saint Louis, MS
  • Average wind speed in May: 7.6mph

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).

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Average humidity in May
Bay Saint Louis, MS

Average humidity in May - Bay Saint Louis, MS
  • Average humidity in May: 75%

The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in May
Bay Saint Louis, MS

Average rainfall in May - Bay Saint Louis, MS
  • Average rainfall in May: 0.98"

The wettest month (with the highest rainfall) is August (2.2").
The driest month (with the least rainfall) is March (0.51").

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Average rainfall days in May
Bay Saint Louis, MS

Average rainfall days in May - Bay Saint Louis, MS
  • Average rainfall days in May: 10.8 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).

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Average snowfall days in May
Bay Saint Louis, MS

Average snowfall days in May - Bay Saint Louis, MS
  • Average snowfall days in May: 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).

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Average sea temperature in May
Bay Saint Louis, MS

Average sea temperature in May - Bay Saint Louis, MS
  • Average sea temperature in May: 77.6°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).

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Average daylight in May /
Average sunshine in May
Bay Saint Louis, MS

Average daylight in May / Average sunshine in May - Bay Saint Louis, MS
  • Average daylight in May: 13h and 4min

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 May: 10h and 5min

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).

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Average sunshine days in May
Bay Saint Louis, MS

Average sunshine days in May - Bay Saint Louis, MS
  • Average sunshine days in May: 16.8 days

The month with the most sunshine days is November (23.3 days).
The month with the least sunshine days is August (8 days).

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Average UV index in May
Bay Saint Louis, MS

Average UV index in May - Bay Saint Louis, MS
  • Average UV index in May: 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).

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Average cloud cover in May
Bay Saint Louis, MS

Average cloud cover in May - Bay Saint Louis, MS
  • Average cloud cover in May: 25

The month with the most cloud cover is December (Cloud cover 44).
The month with the least cloud cover is October (Cloud cover 23).

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Average visibility in May
Bay Saint Louis, MS

Average visibility in May - Bay Saint Louis, MS
  • Average visibility in May: 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).

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Bay Saint Louis, Mississippi, USA

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