August weather forecast
Detroit, MI

The downtown city of Detroit, Michigan viewed from a bird
The downtown city of Detroit, Michigan viewed from a bird's eye angle

Weather in August

The last month of the summer, August, is another warm month in Detroit, Michigan, with an average temperature varying between 78.4°F (25.8°C) and 64.9°F (18.3°C).

Temperature

In August, the average high-temperature is relatively the same as in July - a still warm 78.4°F (25.8°C). In Detroit, the average low-temperature is 64.9°F (18.3°C).

Humidity

July and August, with an average relative humidity of 73%, are the least humid months.

Rainfall

In August, in Detroit, the rain falls for 15.2 days. Throughout August, 2.44" (62mm) of precipitation is accumulated. Throughout the year, in Detroit, there are 152.1 rainfall days, and 23.43" (595mm) of precipitation is accumulated.

Snowfall

In Detroit, Michigan, snow does not fall in June through September.

Ocean temperature

The month with the warmest seawater in Detroit is August, with an average ocean temperature of 75.4°F (24.1°C).
Note: For individuals prone to feeling cold, swimming in 73.4°F (23°C) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 75.4°F (24.1°C).

Daylight

The average length of the day in August is 13h and 50min.
On the first day of the month, sunrise is at 6:25 am and sunset at 8:51 pm. On the last day of August, sunrise is at 6:56 am and sunset at 8:08 pm EDT.

Sunshine

The average sunshine in August in Detroit is 10.5h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: In August, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. 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. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.
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FAQ

What are the least humid months in Detroit?

July and August, with an average relative humidity of 73%, are the least humid months in Detroit, Michigan.

What is the average humidity in August in Detroit?

In Detroit, the average relative humidity in August is 73%.

How much does it rain in Detroit in August?

In Detroit, during August, the rain falls for 15.2 days and regularly aggregates up to 2.44" (62mm) of precipitation.

When it does not snow in Detroit?

June through September are months without snowfall in Detroit.

What month is the ocean warmest in Detroit?

August is the month with the warmest seawater, with an average ocean temperature of 75.4°F (24.1°C).

How warm is the water in August in Detroit?

In Detroit, Michigan, the average seawater temperature in August is 75.4°F (24.1°C). For individuals prone to feeling cold, swimming in 73.4°F (23°C) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 75.4°F (24.1°C).

What is the average length of the day in August in Detroit?

In August, the average day length is 13h and 50min.

What time are sunrise and sunset in August in Detroit?

In August, on the first day of the month, sunrise is at 6:25 am and sunset at 8:51 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 8:08 pm EDT.

How many hours of sunshine does Detroit have in August?

In August, the average sunshine duration in Detroit is 10.5h.

When is the highest UV index in Detroit?

The months with the highest UV index in Detroit are June through August, with an average maximum UV index of 6.

What is the UV index intensity in August in Detroit?

The average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Detroit, MI

Average temperature in August - Detroit, MI
  • Average high temperature in August: 78.4°F

The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (29.3°F).

  • Average low temperature in August: 64.9°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (19.6°F).

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Average pressure in August
Detroit, MI

Average pressure in August - Detroit, MI
  • Average pressure in August: 29.98"Hg

The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in August
Detroit, MI

Average wind speed in August - Detroit, MI
  • Average wind speed in August: 7.1mph

The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).

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Average humidity in August
Detroit, MI

Average humidity in August - Detroit, MI
  • Average humidity in August: 73%

The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are July and August (73%).

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Average rainfall in August
Detroit, MI

Average rainfall in August - Detroit, MI
  • Average rainfall in August: 2.44"

The wettest month (with the highest rainfall) is May (2.87").
The driest month (with the least rainfall) is February (1.22").

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Average rainfall days in August
Detroit, MI

Average rainfall days in August - Detroit, MI
  • Average rainfall days in August: 15.2 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (7.1 days).

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Average snowfall in August
Detroit, MI

Average snowfall in August - Detroit, MI
  • Average snowfall in August: 0"

The month with the highest snowfall is January (4.29").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Detroit, MI

Average snowfall days in August - Detroit, MI
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (14.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in August
Detroit, MI

Average sea temperature in August - Detroit, MI
  • Average sea temperature in August: 75.4°F

The best month for swimming (with the highest average sea temperature) is August (75.4°F).
The coldest month (with the lowest average sea temperature) is February (32.7°F).

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Average daylight in August /
Average sunshine in August
Detroit, MI

Average daylight in August / Average sunshine in August - Detroit, MI
  • Average daylight in August: 13h and 50min

The month with the longest days is June (Average daylight: 15h and 14min).
The month with the shortest days is December (Average daylight: 9h and 8min).

  • Average sunshine in August: 10h and 30min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).

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Average sunshine days in August
Detroit, MI

Average sunshine days in August - Detroit, MI
  • Average sunshine days in August: 13 days

The month with the most sunshine days is November (15.2 days).
The month with the least sunshine days is February (10.7 days).

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Average UV index in August
Detroit, MI

Average UV index in August - Detroit, MI
  • Average UV index in August: 6

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in August
Detroit, MI

Average cloud cover in August - Detroit, MI
  • Average cloud cover in August: 28

The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is July (Cloud cover 27).

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Average visibility in August
Detroit, MI

Average visibility in August - Detroit, MI
  • Average visibility in August: 6mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

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