May weather forecast
Port Sulphur, LA

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Weather in May

May, the last month of the spring in Port Sulphur, is also a moderately hot month, with an average temperature ranging between min 72.9°F (22.7°C) and max 81.3°F (27.4°C).

Temperature

With the transition into May, Port Sulphur experiences a subtle uplift in average high-temperatures, adjusting from 75.2°F (24°C) in April to a still warm 81.3°F (27.4°C). Port Sulphur sustains an average of approximately an agreeable 72.9°F (22.7°C) during May nights, with little variation from daytime highs.

Heat index

The average heat index in May is estimated at a tropical 86°F (30°C). Continuous activity in exposure could lead to a feeling of fatigue and heat cramps.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is the outcome of merging air's temperature and its humidity metrics. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.

Humidity

In Port Sulphur, the average relative humidity in May is 74%.

Rainfall

In Port Sulphur, in May, it is raining for 9.7 days, with typically 1.22" (31mm) of accumulated precipitation. In Port Sulphur, during the entire year, the rain falls for 137.2 days and collects up to 19.92" (506mm) of precipitation.

Snowfall

February through December are months without snowfall in Port Sulphur.

Daylight

The average length of the day in May in Port Sulphur is 13h and 38min.
On the first day of the month, sunrise is at 6:15 am and sunset at 7:35 pm. On the last day of May, sunrise is at 5:59 am and sunset at 7:53 pm CDT.

Sunshine

In May, the average sunshine in Port Sulphur is 10.8h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: The daily high UV index of 7 during May translates into the following recommendations:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
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Frequently asked questions

What is the usual temperature for Port Sulphur in May?

The average high-temperature, in May, in Port Sulphur, is 81.3°F (27.4°C), while the average low-temperature is 72.9°F (22.7°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in May is estimated at 86°F (30°C).

What is the average humidity in May in Port Sulphur?

In May, the average relative humidity in Port Sulphur is 74%.

How much does it rain in Port Sulphur in May?

In Port Sulphur, Louisiana, in May, during 9.7 rainfall days, 1.22" (31mm) of precipitation is typically accumulated.

When it does not snow in Port Sulphur?

February through December are months without snowfall in Port Sulphur.

How many hours of daylight does Port Sulphur have in May?

In Port Sulphur, Louisiana, the average day length in May is 13h and 38min.

When are sunrise and sunset in May in Port Sulphur?

In May, on the first day of the month, sunrise is at 6:15 am and sunset at 7:35 pm. On the last day of the month, in Port Sulphur, sunrise is at 5:59 am and sunset at 7:53 pm CDT.

How many hours of sunshine does Port Sulphur have in May?

In May, the average sunshine duration is 10.8h.

When is the highest UV index in Port Sulphur?

May through September, with an average maximum UV index of 7, are months with the highest UV index in Port Sulphur, Louisiana.

How high is the UV index in May in Port Sulphur?

The average daily maximum UV index in May in Port Sulphur, Louisiana, is 7. A UV Index estimate of 6 to 7 represents a high hazard to health from unsafe 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
Port Sulphur, LA

Average temperature in May - Port Sulphur, LA
  • Average high temperature in May: 81.3°F

The warmest month (with the highest average high temperature) is August (87.6°F).
The month with the lowest average high temperature is January (61.2°F).

  • Average low temperature in May: 72.9°F

The month with the highest average low temperature is August (80.4°F).
The coldest month (with the lowest average low temperature) is January (51.6°F).

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Average pressure in May
Port Sulphur, LA

Average pressure in May - Port Sulphur, LA
  • Average pressure in May: 29.99"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.97"Hg).

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Average wind speed in May
Port Sulphur, LA

Average wind speed in May - Port Sulphur, LA
  • Average wind speed in May: 9.3mph

The windiest month (with the highest average wind speed) is January (11.3mph).
The calmest month (with the lowest average wind speed) is July (7.3mph).

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Average humidity in May
Port Sulphur, LA

Average humidity in May - Port Sulphur, LA
  • Average humidity in May: 74%

The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in May
Port Sulphur, LA

Average rainfall in May - Port Sulphur, LA
  • Average rainfall in May: 1.22"

The wettest month (with the highest rainfall) is August (4.72").
The driest month (with the least rainfall) is April (0.79").

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Average rainfall days in May
Port Sulphur, LA

Average rainfall days in May - Port Sulphur, LA
  • Average rainfall days in May: 9.7 days

The month with the highest number of rainy days is August (20.3 days).
The month with the least rainy days is November (7 days).

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Average snowfall days in May
Port Sulphur, LA

Average snowfall days in May - Port Sulphur, LA
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (0.2 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
Port Sulphur, LA

Average daylight in May / Average sunshine in May - Port Sulphur, 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 5min

The month with the most sunshine is June (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

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Average sunshine days in May
Port Sulphur, LA

Average sunshine days in May - Port Sulphur, LA
  • Average sunshine days in May: 19.6 days

The months with the most sunshine days are April and November (20.9 days).
The month with the least sunshine days is August (7.3 days).

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Average UV index in May
Port Sulphur, LA

Average UV index in May - Port Sulphur, LA
  • Average UV index in May: 7

The months with the highest UV index are May, June, July, August and September (UV index 7).
The months with the lowest UV index are January and December (UV index 4).

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Average cloud cover in May
Port Sulphur, LA

Average cloud cover in May - Port Sulphur, LA
  • Average cloud cover in May: 23

The month with the most cloud cover is December (Cloud cover 43).
The month with the least cloud cover is May (Cloud cover 23).

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Average visibility in May
Port Sulphur, LA

Average visibility in May - Port Sulphur, 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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Port Sulphur, Louisiana, USA

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