May weather forecast and climate
Crystal River, FL

A few people on the clear and pebbly shores of the Crystal River in Florida, swimming with manatees under the hot summer sun
A few people on the clear and pebbly shores of the Crystal River in Florida, swimming with manatees under the hot summer sun
May, the last month of the spring, in Crystal River, is also a moderately hot month, with temperature in the range of an average low of 69.4°F (20.8°C) and an average high of 84.6°F (29.2°C).

Temperature

In Crystal River, the average high-temperature is essentially the same as in April - a still warm 84.6°F (29.2°C). In Crystal River, the average low-temperature is 69.4°F (20.8°C).

Heat index

In May, the average heat index is appraised at a hot 92.8°F (33.8°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
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 'felt air temperature', 'apparent temperature', 'feels like', or 'real feel', is a measure of how hot it feels when the actual air humidity is factored in. Additional factors like activity, clothing, differences in body mass, height, and shape, and wind affect individual temperature impact. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

Months with the lowest humidity in Crystal River are January, March and May, with an average relative humidity of 73%.

Rainfall

In May, in Crystal River, the rain falls for 14.3 days. Throughout May, 2.44" (62mm) of precipitation is accumulated. Throughout the year, in Crystal River, there are 178.4 rainfall days, and 34.06" (865mm) of precipitation is accumulated.

Snowfall

February through December are months without snowfall.

Ocean temperature

In Crystal River, in May, the average water temperature is 77°F (25°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 Crystal River, the average length of the day in May is 13.6h.

Sunshine

The month with the most sunshine is May, with an average of 11h of sunshine.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index in Crystal River. A UV Index reading of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 7 in May transform into the following instructions:
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. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What is the temperature in May in Crystal River?

The average high-temperature, in May, in Crystal River, is 84.6°F (29.2°C), while the average low-temperature is 69.4°F (20.8°C). In May, the average heat index (a.k.a. 'real feel', 'feels like'), that combines air temperature and relative humidity, is evaluated at 92.8°F (33.8°C).

What is the least humid month in Crystal River?

January, March and May, with an average relative humidity of 73%, are the least humid months.

What is the average humidity in May in Crystal River?

In Crystal River, Florida, the average relative humidity in May is 73%.

How much does it rain in Crystal River in May?

In May, in Crystal River, Florida, the rain falls for 14.3 days. Throughout May, 2.44" (62mm) of precipitation is accumulated.

When it does not snow in Crystal River?

In Crystal River, Florida, snow does not fall in February through December.

What is the ocean temperature in May in Crystal River?

In Crystal River, Florida, the average seawater temperature in May is 77°F (25°C). For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

How many hours of daylight does Crystal River have in May?

In Crystal River, the average length of the day in May is 13.6h.

What month has the most sunshine in Crystal River?

The month with the most sunshine is May, with an average of 11h of sunshine.

How long on average sun shines in May in Crystal River?

In May, the average sunshine in Crystal River is 11h.

What are the months with the highest UV index in Crystal River?

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

How high is the UV index in May in Crystal River?

In Crystal River, Florida, the average daily maximum UV index in May is 7. A UV Index value of 6 to 7 symbolizes a high health threat from unprotected exposure to the UV radiation.
Average temperature in May - Crystal River, FL
  • Average high temperature in May: 84.6°F

The warmest month (with the highest average high temperature) is August (89.2°F).
The month with the lowest average high temperature is January (65.3°F).

  • Average low temperature in May: 69.4°F

The month with the highest average low temperature is August (77.2°F).
The coldest month (with the lowest average low temperature) is January (49.6°F).

Average pressure in May - Crystal River, FL
  • Average pressure in May: 30.01"

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

Average wind speed in May - Crystal River, FL
  • Average wind speed in May: 6.9mph

The windiest months (with the highest average wind speed) are March and April (7.6mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).

Average humidity in May - Crystal River, FL
  • Average humidity in May: 73%

The month with the highest relative humidity is September (78%).
Months with the lowest relative humidity are January, March and May (73%).

Average rainfall in May - Crystal River, FL
  • Average rainfall in May: 2.44"

The wettest month (with the highest rainfall) is August (5.51").
The driest month (with the least rainfall) is March (1.26").

Average rainfall days in May - Crystal River, FL
  • Average rainfall days in May: 14.3 days

The month with the highest number of rainy days is August (26.9 days).
The month with the least rainy days is November (8.7 days).

Average snowfall days in May - Crystal River, FL
  • 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).

Average sea temperature in May - Crystal River, FL
  • Average sea temperature in May: 77°F

The best month for swimming (with the highest average sea temperature) is August (86°F).
The coldest months (with the lowest average sea temperature) are February and March (68°F).

Average daylight in May / Average sunshine in May - Crystal River, FL
  • Average daylight in May: 13.6h

The month with the longest days is June (Average daylight: 14h).
The month with the shortest days is December (Average daylight: 10.3h).

  • Average sunshine in May: 11h

The month with the most sunshine is May (Average sunshine: 11h).
The month with the least sunshine is December (Average sunshine: 6.3h).

Average sunshine days in May - Crystal River, FL
  • Average sunshine days in May: 14.5 days

The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is August (2.1 days).

Average UV index in May - Crystal River, FL
  • Average UV index in May: 7

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 - Crystal River, FL
  • Average cloud cover in May: 24

Months with the most cloud cover are February and December (Cloud cover 34).
The month with the least cloud cover is May (Cloud cover 24).

Average visibility in May - Crystal River, FL
  • 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).