May weather forecast
Mermentau, LA

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Weather in May

The last month of the spring, May, is another warm month in Mermentau, Louisiana, with an average temperature fluctuating between 68.2°F (20.1°C) and 84.6°F (29.2°C).

Temperature

Mermentau's transition into May is marked by a minor temperature shift, moving from a moderately hot 77.5°F (25.3°C) in April to a still warm 84.6°F (29.2°C). Throughout the month of May, Mermentau witnesses an average low-temperature of 68.2°F (20.1°C).

Heat index

The heat index in May is computed to be a hot 93.2°F (34°C). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.
Understanding the heat index involves considering values for shaded locales with light wind. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', marries air temperature and humidity to produce a value illustrating perceived warmth. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.

Humidity

In Mermentau, the average relative humidity in May is 75%.

Rainfall

In Mermentau, during May, the rain falls for 12.1 days and regularly aggregates up to 2.01" (51mm) of precipitation. Throughout the year, there are 156.6 rainfall days, and 26.34" (669mm) of precipitation is accumulated.

Snowfall

In Mermentau, snow does not fall in February through December.

Daylight

In Mermentau, the average length of the day in May is 13h and 41min.
On the first day of the month, sunrise is at 6:26 am and sunset at 7:48 pm. On the last day of May, in Mermentau, Louisiana, sunrise is at 6:09 am and sunset at 8:07 pm CDT.

Sunshine

In May, the average sunshine in Mermentau, Louisiana, is 10.3h.

UV index

The months with the highest UV index in Mermentau are May through August, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily maximum UV index of 7 in May interprets into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
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Frequently asked questions

Is it hot in Mermentau during May?

The high-temperature, in May, in Mermentau, records 84.6°F (29.2°C), while the low-temperature is 68.2°F (20.1°C). In May, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 93.2°F (34°C).

What is the average humidity in May in Mermentau?

In May, the average relative humidity in Mermentau is 75%.

How much does it rain in Mermentau in May?

In Mermentau, Louisiana, in May, it is raining for 12.1 days, with typically 2.01" (51mm) of accumulated precipitation.

When it does not snow in Mermentau?

In Mermentau, Louisiana, snow does not fall in February through December.

How many hours of daylight does Mermentau have in May?

In May, the average day length in Mermentau, Louisiana, is 13h and 41min.

When are sunrise and sunset in May in Mermentau?

On the first day of May in Mermentau, Louisiana, sunrise is at 6:26 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 6:09 am and sunset at 8:07 pm CDT.

How many hours of sunshine does Mermentau have in May?

The average sunshine duration in May in Mermentau is 10.3h.

What is the month with the highest UV index in Mermentau?

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

What is the UV index reading in May in Mermentau?

In Mermentau, the average daily maximum UV index in May is 7. A UV Index value of 6 to 7 symbolizes a high health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Mermentau, LA

Average temperature in May - Mermentau, LA
  • Average high temperature in May: 84.6°F

The warmest month (with the highest average high temperature) is August (90°F).
The month with the lowest average high temperature is January (59°F).

  • Average low temperature in May: 68.2°F

The months with the highest average low temperature are July and August (75.2°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).

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Average pressure in May
Mermentau, LA

Average pressure in May - Mermentau, LA
  • Average pressure in May: 29.96"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in May
Mermentau, LA

Average wind speed in May - Mermentau, LA
  • Average wind speed in May: 7.9mph

The windiest month (with the highest average wind speed) is February (9.2mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).

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Average humidity in May
Mermentau, LA

Average humidity in May - Mermentau, LA
  • Average humidity in May: 75%

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in May
Mermentau, LA

Average rainfall in May - Mermentau, LA
  • Average rainfall in May: 2.01"

The wettest month (with the highest rainfall) is August (3.58").
The driest month (with the least rainfall) is February (1.61").

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Average rainfall days in May
Mermentau, LA

Average rainfall days in May - Mermentau, LA
  • Average rainfall days in May: 12.1 days

The month with the highest number of rainy days is August (18.6 days).
The month with the least rainy days is November (9.3 days).

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Average snowfall in May
Mermentau, LA

Average snowfall in May - Mermentau, LA
  • Average snowfall in May: 0"

The month with the highest snowfall is January (0.12").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in May
Mermentau, LA

Average snowfall days in May - Mermentau, LA
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (0.3 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 daylight in May /
Average sunshine in May
Mermentau, LA

Average daylight in May / Average sunshine in May - Mermentau, LA
  • 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 2min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).

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Average sunshine days in May
Mermentau, LA

Average sunshine days in May - Mermentau, LA
  • Average sunshine days in May: 16 days

The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is August (9.9 days).

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Average UV index in May
Mermentau, LA

Average UV index in May - Mermentau, LA
  • Average UV index in May: 7

The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in May
Mermentau, LA

Average cloud cover in May - Mermentau, LA
  • Average cloud cover in May: 29

The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is October (Cloud cover 25).

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Average visibility in May
Mermentau, LA

Average visibility in May - Mermentau, LA
  • 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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Mermentau, Louisiana, USA

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