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 sea temperature 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 arrival of August coincides with an average high-temperature of a still agreeable 71.1°F (21.7°C), indicating a minimal shift from July's 71.4°F (21.9°C). The average temperature during August nights is registered at a moderate 58.6°F (14.8°C).Humidity
The average relative humidity in August in Mackinac Island is 79%.Rainfall
In Mackinac Island, Michigan, in August, it is raining for 13.8 days, with typically 1.65" (42mm) of accumulated precipitation. In Mackinac Island, during the entire year, the rain falls for 131 days and collects up to 21.22" (539mm) of precipitation.Snowfall
June through September are months without snowfall.Ocean temperature
August is the month with the warmest seawater in Mackinac Island, with an average ocean temperature of 60.8°F (16°C).Note: The majority of individuals find swimming in 60.8°F (16°C) to be unenjoyable. The difficulty in controlling breathing rises as the temperature decreases from 69.8°F (21°C) to 59°F (15°C).
Daylight
In August, the average length of the day is 14h and 5min.On the first day of the month, sunrise is at 6:22 am and sunset at 9:07 pm. On the last day of August, in Mackinac Island, sunrise is at 6:59 am and sunset at 8:17 pm EDT.
Sunshine
In Mackinac Island, the average sunshine in August is 9.9h.UV index
June through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum UV index of 5 in August translates into the following recommendations:
Take precautions - Protection against sunburn is recommended. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Mackinac Island in August?
What is the average humidity in August in Mackinac Island?
How many days does it rain in August in Mackinac Island?
When it does not snow in Mackinac Island?
What is the month with the warmest ocean in Mackinac Island?
What is the ocean temperature in August in Mackinac Island?
What is the average length of the day in August in Mackinac Island?
When are sunrise and sunset in August in Mackinac Island?
How many hours of sunshine does Mackinac Island have in August?
What are the months with the highest UV index in Mackinac Island?
How high is the UV index in August in Mackinac Island?
Average temperature in August
Mackinac Island, MI
- Average high temperature in August: 71.1°F
The warmest month (with the highest average high temperature) is July (71.4°F).
The month with the lowest average high temperature is January (23.4°F).
- Average low temperature in August: 58.6°F
The month with the highest average low temperature is August (58.6°F).
The coldest month (with the lowest average low temperature) is February (14.4°F).
Average pressure in August
Mackinac Island, MI
- Average pressure in August: 29.94"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in August
Mackinac Island, MI
- Average wind speed in August: 8.1mph
The windiest months (with the highest average wind speed) are November and December (10.9mph).
The calmest months (with the lowest average wind speed) are June and July (7.6mph).
Average humidity in August
Mackinac Island, MI
- Average humidity in August: 79%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is May (75%).
Average rainfall in August
Mackinac Island, MI
- Average rainfall in August: 1.65"
The wettest month (with the highest rainfall) is October (2.72").
The driest month (with the least rainfall) is January (1.3").
Average rainfall days in August
Mackinac Island, MI
- Average rainfall days in August: 13.8 days
The month with the highest number of rainy days is October (16.5 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in August
Mackinac Island, MI
- Average snowfall in August: 0"
The month with the highest snowfall is January (5.91").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Mackinac Island, MI
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (21.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in August
Mackinac Island, MI
- Average sea temperature in August: 61°F
The best month for swimming (with the highest average sea temperature) is August (61°F).
The coldest months (with the lowest average sea temperature) are February, March and April (36°F).
Average daylight in August /
Average sunshine in August
Mackinac Island, MI
- Average daylight in August: 14h and 1min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in August: 9h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 1h and 54min).
Average sunshine days in August
Mackinac Island, MI
- Average sunshine days in August: 15.4 days
The month with the most sunshine days is September (16.9 days).
The month with the least sunshine days is January (7.1 days).
Average UV index in August
Mackinac Island, MI
- Average UV index in August: 5
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in August
Mackinac Island, MI
- Average cloud cover in August: 32
The month with the most cloud cover is January (Cloud cover 80).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in August
Mackinac Island, MI
- Average visibility in August: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
Mackinac Island, Michigan, USA
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