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 high-temperature average in August for Grand Marais, Michigan, is a still agreeable 71.8°F (22.1°C), staying closely aligned with July's conditions. An average temperature of 56.8°F (13.8°C) is recorded in Grand Marais, Michigan, during the nights in August.Humidity
In August, the average relative humidity is 80%.Rainfall
In Grand Marais, in August, during 14 rainfall days, 1.77" (45mm) of precipitation is typically accumulated. Throughout the year, there are 123.2 rainfall days, and 22.17" (563mm) of precipitation is accumulated.Snowfall
In Grand Marais, snow does not fall in June through September.Ocean temperature
August is the month with the warmest seawater in Grand Marais, with an average ocean temperature of 59°F (15°C).Note: Most people do not find swimming enjoyable in water of 59°F (15°C). The task of controlling breathing becomes tougher as the temperature drops from 69.8°F (21°C) to 59°F (15°C).
Daylight
The average length of the day in August is 14h and 8min.On the first day of August in Grand Marais, sunrise is at 6:25 am and sunset at 9:15 pm. On the last day of the month, sunrise is at 7:03 am and sunset at 8:24 pm EDT.
Sunshine
In Grand Marais, the average sunshine in August is 9.5h.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: A typical high UV index of 5 in August suggests the following recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Grand Marais in August?
What is the average humidity in August in Grand Marais?
How many days does it rain in August in Grand Marais?
When it does not snow in Grand Marais?
When is the ocean warmest in Grand Marais?
What is the ocean temperature in August in Grand Marais?
What is the average length of the day in August in Grand Marais?
What time are sunrise and sunset in August in Grand Marais?
How many hours of sunshine does Grand Marais have in August?
What is the month with the highest UV index in Grand Marais?
How high is the UV index in August in Grand Marais?
Average temperature in August
Grand Marais, MI
- Average high temperature in August: 71.8°F
The warmest month (with the highest average high temperature) is July (72.1°F).
The month with the lowest average high temperature is January (22.8°F).
- Average low temperature in August: 56.8°F
The month with the highest average low temperature is August (56.8°F).
The coldest month (with the lowest average low temperature) is February (13.6°F).
Average pressure in August
Grand Marais, 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
Grand Marais, MI
- Average wind speed in August: 7.4mph
The windiest month (with the highest average wind speed) is November (10.1mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).
Average humidity in August
Grand Marais, MI
- Average humidity in August: 80%
The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is May (73%).
Average rainfall in August
Grand Marais, MI
- Average rainfall in August: 1.77"
The wettest month (with the highest rainfall) is October (2.8").
The driest month (with the least rainfall) is March (1.5").
Average rainfall days in August
Grand Marais, MI
- Average rainfall days in August: 14 days
The month with the highest number of rainy days is October (15.3 days).
The month with the least rainy days is February (3.1 days).
Average snowfall in August
Grand Marais, MI
- Average snowfall in August: 0"
The month with the highest snowfall is January (10.08").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Grand Marais, MI
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (24.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in August
Grand Marais, MI
- Average sea temperature in August: 59°F
The best month for swimming (with the highest average sea temperature) is August (59°F).
The coldest months (with the lowest average sea temperature) are March and April (36°F).
Average daylight in August /
Average sunshine in August
Grand Marais, MI
- Average daylight in August: 14h and 1min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in August: 9h and 3min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 1h and 36min).
Average sunshine days in August
Grand Marais, MI
- Average sunshine days in August: 14.9 days
The month with the most sunshine days is June (16.3 days).
The month with the least sunshine days is January (5.8 days).
Average UV index in August
Grand Marais, 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, November and December (UV index 1).
Average cloud cover in August
Grand Marais, MI
- Average cloud cover in August: 35
The month with the most cloud cover is January (Cloud cover 83).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in August
Grand Marais, 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 and February (4mi).
Grand Marais, Michigan, USA
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