August weather forecast
Dismal Key, FL

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Weather in August

August, the last month of the summer in Dismal Key, is another tropical month, with an average temperature ranging between max 88.3°F (31.3°C) and min 80.2°F (26.8°C).

Temperature

In Dismal Key, August is the warmest month, with temperatures averaging a high of 88.3°F (31.3°C) and a low of 80.2°F (26.8°C).

Heat index

The heat index in August is evaluated at a scorching 104°F (40°C). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

In Dismal Key, the average relative humidity in August is 74%.

Rainfall

The month with the most rainfall in Dismal Key is August, when the rain falls for 22.4 days and typically aggregates up to 4.29" (109mm) of precipitation.

Daylight

The average length of the day in August is 13h and 1min.
On the first day of the month, sunrise is at 6:52 am and sunset at 8:12 pm. On the last day of August, sunrise is at 7:06 am and sunset at 7:46 pm EDT.

Sunshine

In Dismal Key, Florida, the average sunshine in August is 9.9h.

UV index

The months with the highest UV index in Dismal Key are May through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the average person.
Note: A maximum daily UV index of 7 during August morphs into the following directions:
Shun overexposure. Protection from sun ravages is indispensable. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the hottest in Dismal Key?

August is the month that records the highest temperatures in Dismal Key, with averages ranging from a high of 88.3°F (31.3°C) to a low of 80.2°F (26.8°C).

How hot is August in Dismal Key?

In Dismal Key, 88.3°F (31.3°C) is the average high-temperature and 80.2°F (26.8°C) is the average low-temperature during August. In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines relative humidity and air temperature, is evaluated at 104°F (40°C).

What is the average humidity in August in Dismal Key?

In August, the average relative humidity in Dismal Key, Florida, is 74%.

What is the wettest month in Dismal Key?

The month with the most rainfall in Dismal Key, Florida, is August, when the rain falls for 22.4 days and typically aggregates up to 4.29" (109mm) of precipitation.

How much does it rain in Dismal Key in August?

In Dismal Key, Florida, during August, the rain falls for 22.4 days and regularly aggregates up to 4.29" (109mm) of precipitation.

What is the average length of the day in August in Dismal Key?

The average day length in August in Dismal Key, Florida, is 13h and 1min.

What time are sunrise and sunset in August in Dismal Key?

On the first day of August, sunrise is at 6:52 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 7:46 pm EDT.

How long on average sun shines in August in Dismal Key?

In Dismal Key, Florida, the average sunshine duration in August is 9.9h.

What is the month with the highest UV index in Dismal Key?

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 Dismal Key?

In August, the average daily maximum UV index in Dismal Key, Florida, is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability 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 August
Dismal Key, FL

Average temperature in August - Dismal Key, FL
  • Average high temperature in August: 88.3°F

The warmest month (with the highest average high temperature) is August (88.3°F).
The month with the lowest average high temperature is January (71.6°F).

  • Average low temperature in August: 80.2°F

The month with the highest average low temperature is August (80.2°F).
The coldest month (with the lowest average low temperature) is January (59.5°F).

Average pressure in August
Dismal Key, FL

Average pressure in August - Dismal Key, FL
  • Average pressure in August: 29.98"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is September (29.94"Hg).

Average wind speed in August
Dismal Key, FL

Average wind speed in August - Dismal Key, FL
  • Average wind speed in August: 6.5mph

The windiest month (with the highest average wind speed) is November (9.2mph).
The calmest month (with the lowest average wind speed) is July (6.2mph).

Average humidity in August
Dismal Key, FL

Average humidity in August - Dismal Key, FL
  • Average humidity in August: 74%

The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is March (72%).

Average rainfall in August
Dismal Key, FL

Average rainfall in August - Dismal Key, FL
  • Average rainfall in August: 4.29"

The wettest month (with the highest rainfall) is August (4.29").
The driest month (with the least rainfall) is March (0.63").

Average rainfall days in August
Dismal Key, FL

Average rainfall days in August - Dismal Key, FL
  • Average rainfall days in August: 22.4 days

The month with the highest number of rainy days is August (22.4 days).
The month with the least rainy days is February (7 days).

Average daylight in August /
Average sunshine in August
Dismal Key, FL

Average daylight in August / Average sunshine in August - Dismal Key, FL
  • Average daylight in August: 13h and 0min

The month with the longest days is June (Average daylight: 13h and 42min).
The month with the shortest days is December (Average daylight: 10h and 36min).

  • Average sunshine in August: 9h and 5min

The months with the most sunshine are May and July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).

Average sunshine days in August
Dismal Key, FL

Average sunshine days in August - Dismal Key, FL
  • Average sunshine days in August: 6.8 days

The month with the most sunshine days is January (21.8 days).
The month with the least sunshine days is August (6.8 days).

Average UV index in August
Dismal Key, FL

Average UV index in August - Dismal Key, 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 months with the lowest UV index are January and February (UV index 5).

Average cloud cover in August
Dismal Key, FL

Average cloud cover in August - Dismal Key, FL
  • Average cloud cover in August: 26

The month with the most cloud cover is January (Cloud cover 28).
The months with the least cloud cover are March and April (Cloud cover 22).

Average visibility in August
Dismal Key, FL

Average visibility in August - Dismal Key, 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).

Dismal Key, Florida, USA

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