Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
The transition from July to August sees average high-temperatures adjusting to a still tropical 89.1°F (31.7°C), from a not significantly different 90°F (32.2°C). Dennis experiences an average low-temperature of 69.3°F (20.7°C) in month of August.Heat index
The heat index in August is estimated at an extremely hot 105.8°F (41°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.In the scope of the heat index, its values resonate with shade and light wind conditions. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'felt air temperature', takes into account both air temperature and humidity to illustrate what people actually feel. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.
Humidity
In August, the average relative humidity is 74%.Rainfall
In Dennis, Mississippi, in August, it is raining for 18 days, with typically 3.07" (78mm) of accumulated precipitation. Throughout the year, there are 169.1 rainfall days, and 38.11" (968mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
In Dennis, the average length of the day in August is 13h and 25min.On the first day of the month, sunrise is at 6:03 am and sunset at 7:54 pm. On the last day of August, sunrise is at 6:25 am and sunset at 7:20 pm CDT.
Sunshine
In Dennis, Mississippi, the average sunshine in August is 10.2h.UV index
The average daily maximum UV index in August in Dennis is 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for average individuals.Note: In August, the maximum UV index of 6 suggests this advice:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in Dennis in August?
What is the average humidity in August in Dennis?
How much does it rain in Dennis in August?
When it does not snow in Dennis?
What is the average length of the day in August in Dennis?
When are sunrise and sunset in August in Dennis?
How many hours of sunshine does Dennis have in August?
What is the UV index reading in August in Dennis?
Average temperature in August
Dennis, MS
- Average high temperature in August: 89.1°F
The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is January (48°F).
- Average low temperature in August: 69.3°F
The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (33.3°F).
Average pressure in August
Dennis, MS
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in August
Dennis, MS
- Average wind speed in August: 4.7mph
The windiest month (with the highest average wind speed) is February (7.8mph).
The calmest month (with the lowest average wind speed) is July (4.6mph).
Average humidity in August
Dennis, MS
- Average humidity in August: 74%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (72%).
Average rainfall in August
Dennis, MS
- Average rainfall in August: 3.07"
The wettest month (with the highest rainfall) is February (4.13").
The driest month (with the least rainfall) is November (2.28").
Average rainfall days in August
Dennis, MS
- Average rainfall days in August: 18 days
The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is November (9.5 days).
Average snowfall in August
Dennis, MS
- Average snowfall in August: 0"
The month with the highest snowfall is February (0.59").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in August
Dennis, MS
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in August /
Average sunshine in August
Dennis, MS
- Average daylight in August: 13h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in August: 10h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The months with the least sunshine are February and December (Average sunshine: 4h and 36min).
Average sunshine days in August
Dennis, MS
- Average sunshine days in August: 11.3 days
The month with the most sunshine days is October (19.1 days).
The month with the least sunshine days is July (9.8 days).
Average UV index in August
Dennis, MS
- Average UV index in August: 6
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in August
Dennis, MS
- Average cloud cover in August: 31
The months with the most cloud cover are February and December (Cloud cover 50).
The months with the least cloud cover are June and September (Cloud cover 30).
Average visibility in August
Dennis, MS
- Average visibility in August: 6mi
The months with the highest visibility are February, March, April, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, May and July (5mi).
Dennis, Mississippi, USA
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