May weather forecast
Darby, FL

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Weather in May

The last month of the spring, May, is a tropical month in Darby, Florida, with temperature in the range of an average high of 86.5°F (30.3°C) and an average low of 69.1°F (20.6°C).

Temperature

The advent of May observes an average high-temperature of a hot 86.5°F (30.3°C), nearly identical to April's 81.9°F (27.7°C). Darby experiences an average temperature drop to an agreeable 69.1°F (20.6°C) during May nights.

Heat index

The average heat index in May is estimated at a very hot 96.8°F (36°C). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.
The heat index's values are generally associated with conditions in shade and light breezes. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', arises from combining readings of air temperature and relative moisture content. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

January, March through May, with an average relative humidity of 72%, are the least humid months.

Rainfall

In Darby, Florida, in May, during 13.5 rainfall days, 1.57" (40mm) of precipitation is typically accumulated. In Darby, during the entire year, the rain falls for 155.3 days and collects up to 18.62" (473mm) of precipitation.

Daylight

In May, the average length of the day is 13h and 34min.
On the first day of May, sunrise is at 6:48 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 8:22 pm EDT.

Sunshine

The month with the most sunshine is May, with an average of 10.9h of sunshine.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: During May, 7 as the daily maximum UV index converts into the following advice:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. 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. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.

Frequently asked questions

How hot is May?

During May, Darby experiences an average high-temperature of 86.5°F (30.3°C) and a low-temperature of 69.1°F (20.6°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines air temperature and relative humidity, in May is estimated at 96.8°F (36°C).

What is the least humid month?

January, March through May, with an average relative humidity of 72%, are the least humid months.

What is the average humidity in May?

In Darby, the average relative humidity in May is 72%.

How much does it rain in May?

In Darby, in May, during 13.5 rainfall days, 1.57" (40mm) of precipitation is typically accumulated.

How many hours of daylight does Darby have in May?

In May, the average day length is 13h and 34min.

When are sunrise and sunset in May?

On the first day of May, sunrise is at 6:48 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 8:22 pm EDT.

What month has the most sunshine?

With an average of 10.9h of sunshine, May has the most sunshine of the year.

How many hours of sunshine does Darby have in May?

In Darby, the average sunshine duration in May is 10.9h.

When is the highest UV index?

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

What is the UV index reading in May?

In May, the average daily maximum UV index in Darby, Florida, is 7. A UV Index estimate of 6 to 7 represents a high health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Darby, FL

Average temperature in May - Darby, FL
  • Average high temperature in May: 86.5°F

The warmest month (with the highest average high temperature) is August (90.1°F).
The month with the lowest average high temperature is January (67.6°F).

  • Average low temperature in May: 69.1°F

The month with the highest average low temperature is August (76.6°F).
The coldest month (with the lowest average low temperature) is January (50.9°F).

Average pressure in May
Darby, FL

Average pressure in May - Darby, FL
  • Average pressure in May: 30.01"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is September (29.96"Hg).

Average wind speed in May
Darby, FL

Average wind speed in May - Darby, FL
  • Average wind speed in May: 6.2mph

The windiest month (with the highest average wind speed) is March (6.8mph).
The calmest month (with the lowest average wind speed) is July (4.8mph).

Average humidity in May
Darby, FL

Average humidity in May - Darby, FL
  • Average humidity in May: 72%

The months with the highest relative humidity are July, August and September (77%).
The months with the lowest relative humidity are January, March, April and May (72%).

Average rainfall in May
Darby, FL

Average rainfall in May - Darby, FL
  • Average rainfall in May: 1.57"

The wettest month (with the highest rainfall) is July (3.62").
The driest months (with the least rainfall) are January and March (0.55").

Average rainfall days in May
Darby, FL

Average rainfall days in May - Darby, FL
  • Average rainfall days in May: 13.5 days

The month with the highest number of rainy days is August (23.2 days).
The month with the least rainy days is January (6.9 days).

Average daylight in May /
Average sunshine in May
Darby, FL

Average daylight in May / Average sunshine in May - Darby, FL
  • Average daylight in May: 13h and 4min

The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 24min).

  • Average sunshine in May: 10h and 5min

The month with the most sunshine is May (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 18min).

Average sunshine days in May
Darby, FL

Average sunshine days in May - Darby, FL
  • Average sunshine days in May: 14.3 days

The month with the most sunshine days is January (22.7 days).
The month with the least sunshine days is July (5 days).

Average UV index in May
Darby, FL

Average UV index in May - Darby, FL
  • Average UV index in May: 7

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

Average cloud cover in May
Darby, FL

Average cloud cover in May - Darby, FL
  • Average cloud cover in May: 25

The months with the most cloud cover are January, February and December (Cloud cover 33).
The month with the least cloud cover is May (Cloud cover 25).

Average visibility in May
Darby, FL

Average visibility in May - Darby, FL
  • 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).

Darby, Florida, USA

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