August weather forecast
Grand Haven, MI

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Weather in August

August, the last month of the summer in Grand Haven, is also a moderately hot month, with temperature in the range of an average high of 75.2°F (24°C) and an average low of 64.4°F (18°C).

Temperature

August is the month that records the highest temperatures, with averages ranging from a high of 75.2°F (24°C) to a low of 64.4°F (18°C).

Humidity

In August, the average relative humidity in Grand Haven is 77%.

Rainfall

In Grand Haven, in August, during 13.8 rainfall days, 1.93" (49mm) of precipitation is typically accumulated. Throughout the year, in Grand Haven, there are 139.5 rainfall days, and 22.8" (579mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall.

Daylight

The average length of the day in August is 13h and 53min.
On the first day of the month, sunrise is at 6:36 am and sunset at 9:05 pm. On the last day of August, sunrise is at 7:09 am and sunset at 8:20 pm EDT.

Sunshine

In Grand Haven, the average sunshine in August is 10.2h.

UV index

July and August, with an average maximum UV index of 6, are months with the highest UV index in Grand Haven, Michigan. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the average person.
Note: A daily maximum UV index of 6 in August translates into the following instructions:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
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Frequently asked questions

What part of the year is the hottest in Grand Haven?

Grand Haven, Michigan, registers the average highest temperatures during August, with peaks of 75.2°F (24°C) and lows of 64.4°F (18°C).

What is the temperature in August in Grand Haven?

The high-temperature, in August, in Grand Haven, records 75.2°F (24°C), while the low-temperature is 64.4°F (18°C).

What is the average humidity in August in Grand Haven?

In August, the average relative humidity in Grand Haven, Michigan, is 77%.

How many days does it rain in August in Grand Haven?

In Grand Haven, in August, during 13.8 rainfall days, 1.93" (49mm) of precipitation is typically accumulated.

When it does not snow in Grand Haven?

May through October are months without snowfall in Grand Haven.

How many hours of daylight does Grand Haven have in August?

In Grand Haven, the average day length in August is 13h and 53min.

What time are sunrise and sunset in August in Grand Haven?

On the first day of August in Grand Haven, Michigan, sunrise is at 6:36 am and sunset at 9:05 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 8:20 pm EDT.

How many hours of sunshine does Grand Haven have in August?

The average sunshine duration in August is 10.2h.

What are the months with the highest UV index in Grand Haven?

The months with the highest UV index are July and August, with an average maximum UV index of 6.

What is the UV index reading in August in Grand Haven?

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

Average temperature in August
Grand Haven, MI

Average temperature in August - Grand Haven, MI
  • Average high temperature in August: 75.2°F

The warmest month (with the highest average high temperature) is August (75.2°F).
The month with the lowest average high temperature is January (29.3°F).

  • Average low temperature in August: 64.4°F

The month with the highest average low temperature is August (64.4°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).

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Average pressure in August
Grand Haven, MI

Average pressure in August - Grand Haven, MI
  • Average pressure in August: 29.97"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).

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Average wind speed in August
Grand Haven, MI

Average wind speed in August - Grand Haven, MI
  • Average wind speed in August: 8.6mph

The windiest months (with the highest average wind speed) are January and November (12.6mph).
The calmest month (with the lowest average wind speed) is July (8.1mph).

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Average humidity in August
Grand Haven, MI

Average humidity in August - Grand Haven, MI
  • Average humidity in August: 77%

The month with the highest relative humidity is January (84%).
The months with the lowest relative humidity are October and November (76%).

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Average rainfall in August
Grand Haven, MI

Average rainfall in August - Grand Haven, MI
  • Average rainfall in August: 1.93"

The wettest month (with the highest rainfall) is October (2.56").
The driest month (with the least rainfall) is November (1.22").

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Average rainfall days in August
Grand Haven, MI

Average rainfall days in August - Grand Haven, 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 (4.9 days).

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Average snowfall in August
Grand Haven, MI

Average snowfall in August - Grand Haven, MI
  • Average snowfall in August: 0"

The month with the highest snowfall is February (4.13").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Grand Haven, MI

Average snowfall days in August - Grand Haven, MI
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (15.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in August /
Average sunshine in August
Grand Haven, MI

Average daylight in August / Average sunshine in August - Grand Haven, MI
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in August: 10h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).

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Average sunshine days in August
Grand Haven, MI

Average sunshine days in August - Grand Haven, MI
  • Average sunshine days in August: 13.4 days

The month with the most sunshine days is March (16.2 days).
The month with the least sunshine days is January (9.2 days).

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Average UV index in August
Grand Haven, MI

Average UV index in August - Grand Haven, MI
  • Average UV index in August: 6

The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in August
Grand Haven, MI

Average cloud cover in August - Grand Haven, MI
  • Average cloud cover in August: 26

The month with the most cloud cover is January (Cloud cover 77).
The month with the least cloud cover is July (Cloud cover 25).

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Average visibility in August
Grand Haven, MI

Average visibility in August - Grand Haven, 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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Grand Haven, Michigan, USA

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