May weather forecast
Lafayette, LA

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A monument and trees in the tranquil Lafayette Square, Louisiana
A monument and trees in the tranquil Lafayette Square, Louisiana

Weather in May

May brings a distinct change, with the city being exposed to increased sunlight for up to 13.7 hours per day. It becomes considerably warmer from April to May. However, the cool winds provide a relief from the impending hot summer. In spite of the heat, precipitation and humidity levels stay consistent, maintaining the environment's moisture. If visiting during May, expect to sense the imminent arrival of summer.

Temperature

The start of May in Lafayette signals a slight increase in the average high-temperature, moving from a moderately hot 77.5°F (25.3°C) in April to a still warm 84.6°F (29.2°C). Lafayette's average low-temperature is measured at a comfortable 67.5°F (19.7°C) during May.

Heat index

The average heat index in May is evaluated at a hot 93.2°F (34°C). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.
The standards for the heat index are set for locations in shade and under light breezes. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a composite of temperature and humidity figures to convey how warm it feels. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.

Humidity

The average relative humidity in May is 76%.

Rainfall

In May, the rain falls for 10.3 days. Throughout May, 1.18" (30mm) of precipitation is accumulated. In Lafayette, during the entire year, the rain falls for 143.3 days and collects up to 17.91" (455mm) of precipitation.

Snowfall

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

Daylight

In May, the average length of the day is 13h and 41min.
On the first day of the month, sunrise is at 6:24 am and sunset at 7:46 pm. On the last day of May, sunrise is at 6:06 am and sunset at 8:04 pm CDT.

Sunshine

In Lafayette, the average sunshine in May is 10.2h.

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 exposure to the Sun's UV rays for the ordinary person.
Note: A maximum high daily UV index of 7 during May translates into the following directions:
Resist extreme sun exposure. Guarding against solar damage is essential. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.

Frequently asked questions

How hot is May?

Lafayette in May has an average high-temperature of 84.6°F (29.2°C) and an average low-temperature of 67.5°F (19.7°C). The average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, in May is evaluated at 93.2°F (34°C).

What is the average humidity in May in Lafayette?

In Lafayette, the average relative humidity in May is 76%.

How much does it rain in Lafayette in May?

In Lafayette, in May, during 10.3 rainfall days, 1.18" (30mm) of precipitation is typically accumulated.

When it does not snow?

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

How many hours of daylight does Lafayette have in May?

The average day length in May is 13h and 41min.

When is the sunrise / sunset in May?

In May, on the first day of the month, sunrise is at 6:24 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 6:06 am and sunset at 8:04 pm CDT.

How long on average sun shines in May?

The average sunshine duration in May in Lafayette is 10.2h.

When is the highest UV index?

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

What is the UV index reading in May?

In Lafayette, Louisiana, 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 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
Lafayette, LA

Average temperature in May - Lafayette, 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 (58.8°F).

  • Average low temperature in May: 67.5°F

The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).

Average pressure in May
Lafayette, LA

Average pressure in May - Lafayette, LA
  • Average pressure in May: 29.97"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in May
Lafayette, LA

Average wind speed in May - Lafayette, LA
  • Average wind speed in May: 7mph

The windiest month (with the highest average wind speed) is February (8.2mph).
The calmest months (with the lowest average wind speed) are July, August and September (5.3mph).

Average humidity in May
Lafayette, LA

Average humidity in May - Lafayette, LA
  • Average humidity in May: 76%

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is October (73%).

Average rainfall in May
Lafayette, LA

Average rainfall in May - Lafayette, LA
  • Average rainfall in May: 1.18"

The wettest month (with the highest rainfall) is August (2.8").
The driest month (with the least rainfall) is March (0.83").

Average rainfall days in May
Lafayette, LA

Average rainfall days in May - Lafayette, LA
  • Average rainfall days in May: 10.3 days

The month with the highest number of rainy days is August (20 days).
The months with the least rainy days are January and November (7.8 days).

Average snowfall days in May
Lafayette, LA

Average snowfall days in May - Lafayette, LA
  • 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).

Average daylight in May /
Average sunshine in May
Lafayette, LA

Average daylight in May / Average sunshine in May - Lafayette, 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 1min

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 0min).

Average sunshine days in May
Lafayette, LA

Average sunshine days in May - Lafayette, LA
  • Average sunshine days in May: 18.3 days

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is August (8 days).

Average UV index in May
Lafayette, LA

Average UV index in May - Lafayette, 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
Lafayette, LA

Average cloud cover in May - Lafayette, LA
  • Average cloud cover in May: 30

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

Average visibility in May
Lafayette, LA

Average visibility in May - Lafayette, 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).

Lafayette, Louisiana, USA

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