May weather forecast
Seabrook, LA

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Weather in May

May, the last month of the spring in Seabrook, is another warm month, with an average temperature fluctuating between 71.1°F (21.7°C) and 82.9°F (28.3°C).

Temperature

May comes with a subtle rise, with the average high-temperature adjusting from 76.6°F (24.8°C) in April to a still warm 82.9°F (28.3°C). Seabrook records an average nighttime low of 71.1°F (21.7°C) in May.

Heat index

May's mean heat index is calculated to be a hot 89.6°F (32°C). Prolonged exposure and physical activity might induce exhaustion, potentially causing heat cramps.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', provides an understanding of perceived warmth by combining temperature and relative humidity. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely significant for children. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.

Humidity

In Seabrook, the average relative humidity in May is 73%.

Rainfall

In May, in Seabrook, the rain falls for 13.6 days. Throughout May, 3.86" (98mm) of precipitation is accumulated. In Seabrook, during the entire year, the rain falls for 178.6 days and collects up to 44.25" (1124mm) of precipitation.

Daylight

The average length of the day in May is 13h and 41min.
On the first day of the month, sunrise is at 6:16 am and sunset at 7:37 pm. On the last day of May, sunrise is at 5:59 am and sunset at 7:56 pm CDT.

Sunshine

In Seabrook, the average sunshine in May is 10.4h.

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 threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 7 during May leads to these advisories:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Updated: Aug 19, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot during May?

The high-temperature, in May, in Seabrook, is 82.9°F (28.3°C), while the low-temperature averages to 71.1°F (21.7°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in May is calculated to be 89.6°F (32°C).

What is the average humidity in May?

The average relative humidity in May is 73%.

How much does it rain in May?

In May, the rain falls for 13.6 days. Throughout May, 3.86" (98mm) of precipitation is accumulated.

How many hours of daylight does Seabrook have in May?

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

When is the sunrise / sunset in May?

On the first day of May, sunrise is at 6:16 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 5:59 am and sunset at 7:56 pm CDT.

How long on average sun shines in May?

In Seabrook, the average sunshine duration in May is 10.4h.

When is the highest UV index?

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

How high is the UV index in May?

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

Average temperature in May
Seabrook, LA

Average temperature in May - Seabrook, LA
  • Average high temperature in May: 82.9°F

The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is January (59.5°F).

  • Average low temperature in May: 71.1°F

The months with the highest average low temperature are July and August (79.3°F).
The coldest month (with the lowest average low temperature) is January (48°F).

Average pressure in May
Seabrook, LA

Average pressure in May - Seabrook, LA
  • 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).

Average wind speed in May
Seabrook, LA

Average wind speed in May - Seabrook, LA
  • Average wind speed in May: 8.1mph

The windiest months (with the highest average wind speed) are February and April (9.8mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).

Average humidity in May
Seabrook, LA

Average humidity in May - Seabrook, LA
  • Average humidity in May: 73%

The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is October (70%).

Average rainfall in May
Seabrook, LA

Average rainfall in May - Seabrook, LA
  • Average rainfall in May: 3.86"

The wettest month (with the highest rainfall) is July (6.1").
The driest month (with the least rainfall) is November (1.93").

Average rainfall days in May
Seabrook, LA

Average rainfall days in May - Seabrook, LA
  • Average rainfall days in May: 13.6 days

The month with the highest number of rainy days is August (22.7 days).
The month with the least rainy days is November (8.5 days).

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

Average daylight in May / Average sunshine in May - Seabrook, LA
  • Average daylight in May: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).

  • Average sunshine in May: 10h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).

Average sunshine days in May
Seabrook, LA

Average sunshine days in May - Seabrook, LA
  • Average sunshine days in May: 14.9 days

The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is August (7.1 days).

Average UV index in May
Seabrook, LA

Average UV index in May - Seabrook, 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
Seabrook, LA

Average cloud cover in May - Seabrook, LA
  • Average cloud cover in May: 27

The month with the most cloud cover is December (Cloud cover 45).
The month with the least cloud cover is October (Cloud cover 25).

Average visibility in May
Seabrook, LA

Average visibility in May - Seabrook, 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).

Seabrook, Louisiana, USA

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