Climate and monthly weather forecast
Bay Saint Louis, MS

Weather in January

January, like December, is another mild winter month in Bay Saint Louis, Mississippi, with an average temperature fluctuating between 46.4°F (8°C) and 58.8°F (14.9°C). With an average high-temperature of 58.8°F (14.9°C) and an average low-temperature of 46.4°F (8°C), January is the coldest month. Weather in January »

Weather in February

February, the last month of the winter in Bay Saint Louis, is an enjoyable month, with an average temperature fluctuating between 63.1°F (17.3°C) and 50.7°F (10.4°C). In February, the average high-temperature is practically the same as in January - a comfortable 63.1°F (17.3°C). Weather in February »

Weather in March

March, the first month of the spring in Bay Saint Louis, is a pleasant month, with an average temperature fluctuating between 69.4°F (20.8°C) and 56.8°F (13.8°C). In Bay Saint Louis, the average high-temperature in March slightly increases from an enjoyable 63.1°F (17.3°C) in February to an agreeable 69.4°F (20.8°C). Weather in March »

Weather in April

April is a warm spring month in Bay Saint Louis, Mississippi, with temperature in the range of an average high of 75.6°F (24.2°C) and an average low of 62.8°F (17.1°C). In April, the average high-temperature slightly increases from a pleasant 69.4°F (20.8°C) in March to a moderately hot 75.6°F (24.2°C). Weather in April »

Weather in May

May, the last month of the spring in Bay Saint Louis, is another warm month, with an average temperature varying between 81.7°F (27.6°C) and 69.8°F (21°C). In May, the average high-temperature marginally rises from a warm 75.6°F (24.2°C) in April to a still moderately hot 81.7°F (27.6°C). Weather in May »

Weather in June

The first month of the summer, June, is a tropical month in Bay Saint Louis, Mississippi, with an average temperature ranging between min 76.5°F (24.7°C) and max 88°F (31.1°C). In Bay Saint Louis, the average high-temperature in June marginally rises from a warm 81.7°F (27.6°C) in May to a tropical 88°F (31.1°C). Weather in June »

Weather in July

July, like June, is another hot summer month in Bay Saint Louis, Mississippi, with an average temperature fluctuating between 77.5°F (25.3°C) and 89.1°F (31.7°C). In July, the average high-temperature is almost the same as in June - a still tropical 89.1°F (31.7°C). Weather in July »

Weather in August

August, the last month of the summer in Bay Saint Louis, is another tropical month, with an average temperature varying between 77.9°F (25.5°C) and 89.2°F (31.8°C). August is the warmest month, with an average high-temperature of 89.2°F (31.8°C) and an average low-temperature of 77.9°F (25.5°C). In August, the average heat index is calculated to be a scorching 107.1°F (41.7°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a hot month in Bay Saint Louis, Mississippi, with an average temperature ranging between max 86°F (30°C) and min 74.3°F (23.5°C). In September, the average high-temperature is almost the same as in August - a still hot 86°F (30°C). Weather in September »

Weather in October

October, the same as September, is a moderately hot autumn month in Bay Saint Louis, Mississippi, with an average temperature varying between 78.3°F (25.7°C) and 65.1°F (18.4°C). In October, the average high-temperature slightly decreases from a hot 86°F (30°C) in September to a warm 78.3°F (25.7°C). Weather in October »

Weather in November

November, the last month of the autumn in Bay Saint Louis, is also an agreeable month, with temperature in the range of an average high of 68.2°F (20.1°C) and an average low of 54.9°F (12.7°C). In November, the average high-temperature drops from a moderately hot 78.3°F (25.7°C) in October to an agreeable 68.2°F (20.1°C). Weather in November »

Weather in December

December, the first month of the winter in Bay Saint Louis, is still a comfortable month, with an average temperature varying between 62.1°F (16.7°C) and 50.7°F (10.4°C). In December, the average high-temperature slightly decreases from an agreeable 68.2°F (20.1°C) in November to a comfortable 62.1°F (16.7°C). Weather in December »
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FAQ

What is the coldest month in Bay Saint Louis?

With an average high-temperature of 58.8°F (14.9°C) and an average low-temperature of 46.4°F (8°C), January is the coldest month in Bay Saint Louis.

How much does it rain in Bay Saint Louis?

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

When does it snow in Bay Saint Louis?

January is the only month when snow falls.

What is the snowiest month in Bay Saint Louis?

January has the most snowfall days of the year. Snow falls for 0.1 days.

How many days does it snow in Bay Saint Louis?

Throughout the year, in Bay Saint Louis, Mississippi, there are 0.1 snowfall days.

What month is the ocean coldest in Bay Saint Louis?

With an average ocean temperature of 56.8°F (13.8°C), January is the month with the coldest seawater in Bay Saint Louis, Mississippi.

What is the month with the lowest UV index in Bay Saint Louis?

The months with the lowest UV index in Bay Saint Louis, Mississippi, are January, November and December, with an average maximum UV index of 4.

When it does not snow in Bay Saint Louis?

February through December are months without snowfall.

What is the driest month in Bay Saint Louis?

March is the month with the least rainfall in Bay Saint Louis. Rain falls for 10.5 days and accumulates 0.51" (13mm) of precipitation.

When is Daylight Saving Time (DST) in Bay Saint Louis?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from CDT to CST.

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.

When are the longest days in Bay Saint Louis?

The month with the longest days in Bay Saint Louis is June, with an average of 14h and 4min of daylight.

What month has the most sunshine in Bay Saint Louis?

The month with the most sunshine in Bay Saint Louis, Mississippi, is June, with an average of 11.2h of sunshine.

What is the warmest month in Bay Saint Louis?

August is the warmest month, with an average high-temperature of 89.2°F (31.8°C) and an average low-temperature of 77.9°F (25.5°C).

What is the rainiest month in Bay Saint Louis?

The month with the most rainfall is August, when the rain falls for 19.1 days and typically aggregates up to 2.2" (56mm) of precipitation.

What is the month with the warmest ocean in Bay Saint Louis?

August is the month with the warmest seawater in Bay Saint Louis, with an average ocean temperature of 86.5°F (30.3°C).

What is the least humid month in Bay Saint Louis?

With an average relative humidity of 70%, October is the least humid month in Bay Saint Louis, Mississippi.

What is the most humid month in Bay Saint Louis?

With an average relative humidity of 79%, December is the most humid month in Bay Saint Louis, Mississippi.

What is the month with the shortest days in Bay Saint Louis?

The month with the shortest days in Bay Saint Louis is December, with an average of 10h and 14min of daylight.

What is the month with the least sunshine in Bay Saint Louis?

December has the least sunshine of the year in Bay Saint Louis, Mississippi, with an average of 5.3h of sunshine.

Average temperature
Bay Saint Louis, MS

Average temperature - Bay Saint Louis, MS

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).

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
Bay Saint Louis, MS

Average pressure - Bay Saint Louis, MS

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
Bay Saint Louis, MS

Average wind speed - Bay Saint Louis, MS

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
Bay Saint Louis, MS

Average humidity - Bay Saint Louis, MS

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
Bay Saint Louis, MS

Average rainfall - Bay Saint Louis, MS

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
Bay Saint Louis, MS

Average rainfall days - Bay Saint Louis, MS

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
Bay Saint Louis, MS

Average snowfall days - Bay Saint Louis, MS

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
Bay Saint Louis, MS

Average sea temperature - Bay Saint Louis, MS

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 / Average sunshine
Bay Saint Louis, MS

Average daylight / Average sunshine - Bay Saint Louis, MS

The month with the longest days is June (Average daylight: 14h and 4min).
The month with the shortest days is December (Average daylight: 10h and 14min).

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
Bay Saint Louis, MS

Average sunshine days - Bay Saint Louis, MS

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
Bay Saint Louis, MS

Average UV index - Bay Saint Louis, MS

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 visibility
Bay Saint Louis, MS

Average visibility - Bay Saint Louis, MS

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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