May weather forecast
Sumatra, FL

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Weather in May

The last month of the spring, May, is another warm month in Sumatra, Florida, with an average temperature fluctuating between 84.2°F (29°C) and 67.3°F (19.6°C).

Temperature

The arrival of May brings a soft temperature shift, with the average high-temperature nudging from 77.5°F (25.3°C) in April to a still warm 84.2°F (29°C). Sumatra records a mean low-temperature of 67.3°F (19.6°C) in May.

Heat index

In May, the average heat index is estimated at a tropical 91.4°F (33°C). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.
Be aware that heat index ratings are designed for shaded locations and minor breezes. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a numerical representation of warmth when taking temperature and moisture levels into account. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.

Humidity

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

Rainfall

In Sumatra, in May, during 11.7 rainfall days, 1.69" (43mm) of precipitation is typically accumulated. In Sumatra, during the entire year, the rain falls for 164.7 days and collects up to 30.63" (778mm) of precipitation.

Daylight

In May, the average length of the day in Sumatra is 13h and 40min.
On the first day of the month, sunrise is at 6:56 am and sunset at 8:17 pm. On the last day of May, sunrise is at 6:39 am and sunset at 8:36 pm EDT.

Sunshine

The months with the most sunshine in Sumatra are May through July, with an average of 11h of sunshine.

UV index

May through August, with an average maximum UV index of 7, are months with the highest UV index in Sumatra. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: In May, the average maximum UV index of 7 translates into the following recommendations:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Enhance your sun protection with tightly woven, yet airy clothing.
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Frequently asked questions

How hot is May in Sumatra?

The average high-temperature, in May, in Sumatra, is 84.2°F (29°C), while the average low-temperature is 67.3°F (19.6°C). In May, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines relative humidity and air temperature, is estimated at 91.4°F (33°C).

What are the least humid months in Sumatra?

The months with the lowest humidity are January, May and October, with an average relative humidity of 72%.

What is the average humidity in May in Sumatra?

The average relative humidity in May in Sumatra, Florida, is 72%.

How many days does it rain in May in Sumatra?

In Sumatra, in May, during 11.7 rainfall days, 1.69" (43mm) of precipitation is typically accumulated.

How many hours of daylight does Sumatra have in May?

The average day length in May is 13h and 40min.

What time are sunrise and sunset in May in Sumatra?

In May, on the first day of the month, sunrise is at 6:56 am and sunset at 8:17 pm. On the last day of the month, in Sumatra, sunrise is at 6:39 am and sunset at 8:36 pm EDT.

What is the month with the most sunshine in Sumatra?

The months with the most sunshine in Sumatra, Florida, are May through July, with an average of 11h of sunshine.

How long on average sun shines in May in Sumatra?

The average sunshine duration in May in Sumatra is 11h.

What are the months with the highest UV index in Sumatra?

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

What is the UV index intensity in May in Sumatra?

In May, the average daily maximum UV index in Sumatra, Florida, is 7. A UV Index estimate of 6 to 7 represents a high hazard to health from unprotected exposure to 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
Sumatra, FL

Average temperature in May - Sumatra, FL
  • Average high temperature in May: 84.2°F

The warmest month (with the highest average high temperature) is August (90.3°F).
The month with the lowest average high temperature is January (60.8°F).

  • Average low temperature in May: 67.3°F

The month with the highest average low temperature is August (76.3°F).
The coldest month (with the lowest average low temperature) is January (45.3°F).

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Average pressure in May
Sumatra, FL

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

The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.98"Hg).

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Average wind speed in May
Sumatra, FL

Average wind speed in May - Sumatra, FL
  • Average wind speed in May: 6.1mph

The windiest months (with the highest average wind speed) are January and March (7mph).
The calmest month (with the lowest average wind speed) is August (5mph).

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Average humidity in May
Sumatra, FL

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

The month with the highest relative humidity is December (77%).
The months with the lowest relative humidity are January, May and October (72%).

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Average rainfall in May
Sumatra, FL

Average rainfall in May - Sumatra, FL
  • Average rainfall in May: 1.69"

The wettest month (with the highest rainfall) is August (4.17").
The driest month (with the least rainfall) is November (1.38").

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Average rainfall days in May
Sumatra, FL

Average rainfall days in May - Sumatra, FL
  • Average rainfall days in May: 11.7 days

The month with the highest number of rainy days is August (23.8 days).
The month with the least rainy days is November (7.5 days).

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

Average daylight in May / Average sunshine in May - Sumatra, FL
  • 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: 11h and 0min

The months with the most sunshine are May, June and July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

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Average sunshine days in May
Sumatra, FL

Average sunshine days in May - Sumatra, FL
  • Average sunshine days in May: 16.1 days

The month with the most sunshine days is November (21.2 days).
The month with the least sunshine days is August (5.2 days).

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Average UV index in May
Sumatra, FL

Average UV index in May - Sumatra, FL
  • 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 January (UV index 3).

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Average cloud cover in May
Sumatra, FL

Average cloud cover in May - Sumatra, FL
  • Average cloud cover in May: 23

The months with the most cloud cover are February and December (Cloud cover 39).
The month with the least cloud cover is May (Cloud cover 23).

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Average visibility in May
Sumatra, FL

Average visibility in May - Sumatra, 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).

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Sumatra, Florida, USA

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