May weather forecast
Altamonte Springs, FL

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Weather in May

The last month of the spring, May, is a tropical month in Altamonte Springs, Florida, with an average temperature varying between 69.1°F (20.6°C) and 86.2°F (30.1°C).

Temperature

The weather during May records an average high-temperature of a hot 86.2°F (30.1°C), closely mirroring the preceding month. Altamonte Springs, during the nights of May, experiences an average temperature drop to an agreeable 69.1°F (20.6°C).

Heat index

The heat index for May is computed to be a sweltering 96.8°F (36°C). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
Be informed that the heat index values are oriented around shady conditions and gentle breezes. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', combines both the air temperature and the humidity level to give a perceived human temperature. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

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

Rainfall

In May, the rain falls for 13.7 days. Throughout May, 2.01" (51mm) of precipitation is accumulated. Throughout the year, in Altamonte Springs, Florida, there are 172.9 rainfall days, and 22.76" (578mm) of precipitation is accumulated.

Daylight

In Altamonte Springs, the average length of the day in May is 13h and 35min.
On the first day of the month, sunrise is at 6:43 am and sunset at 8:01 pm. On the last day of May, sunrise is at 6:27 am and sunset at 8:18 pm EDT.

Sunshine

The average sunshine in May is 10.7h.

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 unsafe exposure to UV radiation for the ordinary person.
Note: The maximum UV index of 7 during May leads to these instructions:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. 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. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Updated: Aug 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in May?

The high-temperature, in May, in Altamonte Springs, records 86.2°F (30.1°C), while the low-temperature is 69.1°F (20.6°C). In May, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 96.8°F (36°C).

What is the average humidity in May?

In May, the average relative humidity is 72%.

How many days does it rain in May?

In Altamonte Springs, during May, the rain falls for 13.7 days and regularly aggregates up to 2.01" (51mm) of precipitation.

How many hours of daylight does Altamonte Springs have in May?

The average day length in May is 13h and 35min.

What time are sunrise and sunset in May in Altamonte Springs?

On the first day of May, sunrise is at 6:43 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 8:18 pm EDT.

How long on average sun shines in May?

The average sunshine duration in May is 10.7h.

When is the highest UV index?

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

What is the UV index reading in May?

The average daily maximum UV index in May is 7. A UV Index value of 6 to 7 symbolizes a high health threat from unsafe 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
Altamonte Springs, FL

Average temperature in May - Altamonte Springs, FL
  • Average high temperature in May: 86.2°F

The warmest month (with the highest average high temperature) is August (91°F).
The month with the lowest average high temperature is January (68.2°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 (51.1°F).

Average pressure in May
Altamonte Springs, FL

Average pressure in May - Altamonte Springs, FL
  • Average pressure in May: 30.02"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is September (29.97"Hg).

Average wind speed in May
Altamonte Springs, FL

Average wind speed in May - Altamonte Springs, FL
  • Average wind speed in May: 6mph

The windiest months (with the highest average wind speed) are March and April (6.5mph).
The calmest month (with the lowest average wind speed) is July (4.6mph).

Average humidity in May
Altamonte Springs, FL

Average humidity in May - Altamonte Springs, FL
  • Average humidity in May: 72%

The month with the highest relative humidity is September (77%).
The month with the lowest relative humidity is March (70%).

Average rainfall in May
Altamonte Springs, FL

Average rainfall in May - Altamonte Springs, FL
  • Average rainfall in May: 2.01"

The wettest month (with the highest rainfall) is August (3.82").
The driest months (with the least rainfall) are January and March (0.79").

Average rainfall days in May
Altamonte Springs, FL

Average rainfall days in May - Altamonte Springs, FL
  • Average rainfall days in May: 13.7 days

The month with the highest number of rainy days is August (23.4 days).
The month with the least rainy days is January (8.9 days).

Average daylight in May /
Average sunshine in May
Altamonte Springs, FL

Average daylight in May / Average sunshine in May - Altamonte Springs, 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 4min

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

Average sunshine days in May
Altamonte Springs, FL

Average sunshine days in May - Altamonte Springs, FL
  • Average sunshine days in May: 14.8 days

The month with the most sunshine days is January (19.3 days).
The month with the least sunshine days is August (4.6 days).

Average UV index in May
Altamonte Springs, FL

Average UV index in May - Altamonte Springs, 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
Altamonte Springs, FL

Average cloud cover in May - Altamonte Springs, FL
  • Average cloud cover in May: 28

The month with the most cloud cover is February (Cloud cover 37).
The month with the least cloud cover is May (Cloud cover 28).

Average visibility in May
Altamonte Springs, FL

Average visibility in May - Altamonte Springs, 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).

Altamonte Springs, Florida, USA

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