May weather forecast and climate
Dauphin Island, AL

The scenic Dauphin Island in Alabama
The scenic Dauphin Island in Alabama

Weather in May

May, the last month of the spring, in Dauphin Island, is also a moderately hot month, with average temperature fluctuating between 81.3°F (27.4°C) and 70.3°F (21.3°C).

Temperature

In Dauphin Island, the average high-temperature in May slightly increases, from a warm 74.8°F (23.8°C) in April, to a still moderately hot 81.3°F (27.4°C). The average low-temperature, in Dauphin Island, is 70.3°F (21.3°C).

Heat index

The average heat index is calculated to 86°F (30°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'feels like', 'felt air temperature', or 'apparent temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Additional factors like wind, clothing, metabolic differences, and activity influence one's weather impression. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In May, the average relative humidity in Dauphin Island, Alabama, is 74%.

Rainfall

In Dauphin Island, during May, the rain falls for 13.1 days and regularly aggregates up to 2.87" (73mm) of precipitation. Throughout the year, there are 183.1 rainfall days, and 45.94" (1167mm) of precipitation is accumulated.

Snowfall

In Dauphin Island, Alabama, snow does not fall in February through December.

Ocean temperature

In Dauphin Island, Alabama, the average water temperature is 77.4°F (25.2°C).
Note: For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

In Dauphin Island, Alabama, the average length of the day in May is 13.7h.

Sunshine

In May, the average sunshine in Dauphin Island, Alabama, is 10.9h.

UV index

May through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from the exposure to the Sun's UV radiation for the ordinary person.
Note: In May, the average maximum UV index of 7 translate into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.
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FAQ

What is the temperature in May in Dauphin Island?

In May, in Dauphin Island, Alabama, the average high-temperature is 81.3°F (27.4°C), and the average low-temperature is 70.3°F (21.3°C). In May, the average heat index (a.k.a. 'feels like', 'apparent temperature'), that combines both air temperature and relative humidity, is appraised at 86°F (30°C).

What is the average humidity in May in Dauphin Island?

In Dauphin Island, Alabama, the average relative humidity in May is 74%.

How many days does it rain in May in Dauphin Island?

In May, in Dauphin Island, Alabama, the rain falls for 13.1 days. Throughout May, 2.87" (73mm) of precipitation is accumulated.

When it does not snow in Dauphin Island?

In Dauphin Island snow does not fall in February through December.

What is the water temperature in May in Dauphin Island?

In Dauphin Island, the average seawater temperature in May is 77.4°F (25.2°C). Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

How many hours of daylight does Dauphin Island have in May?

In May, the average length of the day in Dauphin Island is 13.7h.

How many hours of sunshine does Dauphin Island have in May?

In May, the average sunshine in Dauphin Island is 10.9h.

What are the months with the highest UV index in Dauphin Island?

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 Dauphin Island?

The average daily maximum UV index in May in Dauphin Island, Alabama, is 7. A UV Index value of 6 to 7 symbolizes a high hazard to health from the exposure to the Sun's UV rays.

Average temperature in May
Dauphin Island, AL

Average temperature in May - Dauphin Island, AL
  • Average high temperature in May: 81.3°F

The warmest month (with the highest average high temperature) is August (88.7°F).
The month with the lowest average high temperature is January (59°F).

  • Average low temperature in May: 70.3°F

The month with the highest average low temperature is August (78.8°F).
The coldest month (with the lowest average low temperature) is January (47.3°F).

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Average pressure in May
Dauphin Island, AL

Average pressure in May - Dauphin Island, AL
  • Average pressure in May: 30"

The month with the highest atmospheric pressure is January (30.16").
Months with the lowest atmospheric pressure are June and August (29.97").

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Average wind speed in May
Dauphin Island, AL

Average wind speed in May - Dauphin Island, AL
  • Average wind speed in May: 8.1mph

The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).

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Average humidity in May
Dauphin Island, AL

Average humidity in May - Dauphin Island, AL
  • 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
Dauphin Island, AL

Average rainfall in May - Dauphin Island, AL
  • Average rainfall in May: 2.87"

The wettest month (with the highest rainfall) is August (6.89").
The driest month (with the least rainfall) is November (2.28").

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Average rainfall days in May
Dauphin Island, AL

Average rainfall days in May - Dauphin Island, AL
  • Average rainfall days in May: 13.1 days

The month with the highest number of rainy days is July (25.3 days).
The month with the least rainy days is November (8.4 days).

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Average snowfall in May
Dauphin Island, AL

Average snowfall in May - Dauphin Island, AL
  • Average snowfall in May: 0"

The month with the highest snowfall is January (0.12").
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
Dauphin Island, AL

Average snowfall days in May - Dauphin Island, AL
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (0.1 days).
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 sea temperature in May
Dauphin Island, AL

Average sea temperature in May - Dauphin Island, AL
  • Average sea temperature in May: 77.4°F

The best month for swimming (with the highest average sea temperature) is August (86.6°F).
The coldest month (with the lowest average sea temperature) is January (58.7°F).

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Average daylight in May /
Average sunshine in May
Dauphin Island, AL

Average daylight in May / Average sunshine in May - Dauphin Island, AL
  • Average daylight in May: 13.7h

The month with the longest days is June (Average daylight: 14.1h).
The month with the shortest days is December (Average daylight: 10.2h).

  • Average sunshine in May: 10.9h

The month with the most sunshine is June (Average sunshine: 11.2h).
Months with the least sunshine are February and December (Average sunshine: 5.5).

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Average sunshine days in May
Dauphin Island, AL

Average sunshine days in May - Dauphin Island, AL
  • Average sunshine days in May: 14.9 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (3.9 days).

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Average UV index in May
Dauphin Island, AL

Average UV index in May - Dauphin Island, AL
  • Average UV index in May: 7

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

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Average cloud cover in May
Dauphin Island, AL

Average cloud cover in May - Dauphin Island, AL
  • Average cloud cover in May: 23

The month with the most cloud cover is December (Cloud cover 42).
The month with the least cloud cover is October (Cloud cover 22).

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Average visibility in May
Dauphin Island, AL

Average visibility in May - Dauphin Island, AL
  • Average visibility in May: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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