August weather forecast
Crystal River, FL

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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

Weather in August

August, the last month of the summer in Crystal River, is another hot month, with an average temperature ranging between max 89.2°F (31.8°C) and min 77.2°F (25.1°C).

Temperature

In Crystal River, August records the highest average temperatures, peaking at 89.2°F (31.8°C) and reaching a low of 77.2°F (25.1°C).

Heat index

The heat index value for August is calculated to be a blisteringly hot 107.6°F (42°C). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.
Heat index values are typically calculated for conditions of shade and a light breeze. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values hold particular significance for children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by 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. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

The average relative humidity in August is 77%.

Rainfall

August is the month with the most rainfall in Crystal River. Rain falls for 26.9 days and accumulates 5.51" (140mm) of precipitation.

Snowfall

February through December are months without snowfall.

Ocean temperature

With an average ocean temperature of 86°F (30°C), August is the month with the warmest seawater in Crystal River.
Note: The water temperature above 86°F (30°C) is arguably regarded as unpleasant. The primary purpose of entering the water - cooling down from sunshine and high temperatures - is lost.

Daylight

The average length of the day in August in Crystal River is 13h and 9min.
On the first day of August in Crystal River, Florida, sunrise is at 6:51 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 7:52 pm EDT.

Sunshine

The average sunshine in August is 9.6h.

UV index

The months with the highest UV index in Crystal River are May through September, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: The maximum UV index of 7 during August leads to these instructions:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Opt for tightly woven and loose clothing to enhance protection from the Sun. Attention! UV radiation is markedly stronger with water and sand reflections.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the hottest in Crystal River?

August, noted for its average high-temperature of 89.2°F (31.8°C) and an average low-temperature of 77.2°F (25.1°C), is considered the warmest month in Crystal River, Florida.

Is it hot in Crystal River during August?

August temperatures in Crystal River, Florida, vary between a high-temperature of 89.2°F (31.8°C) and a low-temperature of 77.2°F (25.1°C). In August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, is calculated to be 107.6°F (42°C).

What is the average humidity in August in Crystal River?

In August, the average relative humidity in Crystal River is 77%.

What is the rainiest month in Crystal River?

August is the month with the most rainfall in Crystal River. Rain falls for 26.9 days and accumulates 5.51" (140mm) of precipitation.

How much does it rain in Crystal River in August?

In August, in Crystal River, the rain falls for 26.9 days. Throughout August, 5.51" (140mm) of precipitation is accumulated.

When it does not snow in Crystal River?

February through December are months without snowfall in Crystal River.

What month is the ocean warmest in Crystal River?

August is the month with the warmest seawater in Crystal River, Florida, with an average ocean temperature of 86°F (30°C).

What is the ocean temperature in August in Crystal River?

In August, the average ocean temperature is 86°F (30°C). For swimming, other intense water activities, temperature above 86°F (30°C) is arguably unpleasant, as the water cooling effect is missing.

What is the average length of the day in August in Crystal River?

In August, the average day length in Crystal River, Florida, is 13h and 9min.

What time are sunrise and sunset in August in Crystal River?

In August, on the first day of the month, sunrise is at 6:51 am and sunset at 8:21 pm. On the last day of the month, in Crystal River, Florida, sunrise is at 7:08 am and sunset at 7:52 pm EDT.

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

In August, the average sunshine duration in Crystal River, Florida, is 9.6h.

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

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

What is the UV index intensity in August in Crystal River?

The average daily maximum UV index in August in Crystal River, Florida, is 7. A UV Index of 6 to 7 symbolizes a high hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Crystal River, FL

Average temperature in August - Crystal River, FL
  • Average high temperature in August: 89.2°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 August: 77.2°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 August
Crystal River, FL

Average pressure in August - Crystal River, FL
  • Average pressure in August: 29.98"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 August
Crystal River, FL

Average wind speed in August - Crystal River, FL
  • Average wind speed in August: 5.8mph

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 August
Crystal River, FL

Average humidity in August - Crystal River, FL
  • Average humidity in August: 77%

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

Average rainfall in August
Crystal River, FL

Average rainfall in August - Crystal River, FL
  • Average rainfall in August: 5.51"

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 August
Crystal River, FL

Average rainfall days in August - Crystal River, FL
  • Average rainfall days in August: 26.9 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 August
Crystal River, FL

Average snowfall days in August - Crystal River, FL
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (0.1 days).
The 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 August
Crystal River, FL

Average sea temperature in August - Crystal River, FL
  • Average sea temperature in August: 86°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 August /
Average sunshine in August
Crystal River, FL

Average daylight in August / Average sunshine in August - Crystal River, FL
  • Average daylight in August: 13h and 1min

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 August: 9h and 4min

The month with the most sunshine is May (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 18min).

Average sunshine days in August
Crystal River, FL

Average sunshine days in August - Crystal River, FL
  • Average sunshine days in August: 2.1 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 August
Crystal River, FL

Average UV index in August - Crystal River, FL
  • Average UV index in August: 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 August
Crystal River, FL

Average cloud cover in August - Crystal River, FL
  • Average cloud cover in August: 30

The 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 August
Crystal River, FL

Average visibility in August - Crystal River, FL
  • Average visibility in August: 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).

Crystal River, Florida, USA

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