May weather forecastMermentau, LA
May
Weather in May
The last month of the spring, May, is also a moderately hot month in Mermentau, Louisiana, with an average temperature ranging between max 84.6°F (29.2°C) and min 68.2°F (20.1°C).Temperature
The beginning of May marks a minor shift in the average high-temperature, moving from April's moderately hot 77.5°F (25.3°C) to a still warm 84.6°F (29.2°C). Mermentau throughout May, records an average low-temperature of 68.2°F (20.1°C).Heat index
Throughout May, the heat index is appraised at a hot 93.2°F (34°C). Implement additional preventive actions, heat cramps and heat exhaustion are potential hazards. Heatstroke could follow prolonged activity.The heat index's values are generally associated with conditions in shade and light breezes. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
Humidity
In Mermentau, the average relative humidity in May is 75%.Rainfall
In Mermentau, Louisiana, 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
February through December are months without snowfall.Daylight
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, sunrise is at 6:09 am and sunset at 8:07 pm CDT.
Sunshine
In May, the average sunshine in Mermentau is 10.3h.UV index
May through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum UV index of 7 in May translates into the following recommendations:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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).
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).
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%).
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").
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).
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").
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).
Average daylight in May /
Average sunshine in May
Mermentau, LA
- Average daylight in May: 13h and 42min
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 18min
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).
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).
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).
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).
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).
