Mild
Average highs are around 24°C, so days are mild rather than hot.
Weather Guide
Mackinac Island, United States Average Monthly Weather
Weather score32Poor annual avg
Best months: July, August, June
Across the year, average daytime temperatures are around 11°C, sunshine averages 5.6h per day, and rainfall totals about 794mm. Sea temperatures average 8°C across the year.
Annual weather
Annual averages
Temp
11°C
Rain
794mm
Annual total
Sun
5.6h
Sea
8°C
Weather score
32
Poor avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 80mm, which is relatively low for holiday planning.
Bright
Sunshine averages 8h per day, so bright days are a strong part of the month.
Cool sea
Sea temperatures average 19°C, so the water can feel cool.
Map
Weather map
Compare Mackinac Island, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
August24°C average high
August is one of Mackinac Island's warmest months, with daytime heat above the yearly average.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
August80mm average rain
August is wetter than Mackinac Island's yearly average, so flexible plans matter more.
Driest monthsJanuary to April and December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
August8 hours average sun
August is brighter than Mackinac Island's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
August19°C average sea
August is one of Mackinac Island's warmest sea months, when swimming comfort is usually strongest.
Warmest seaJuly to September
Sea temperatures are usually near 17°C in this stretch, so swimming comfort is at its strongest.
Weather score
August55 weather score
August scores above Mackinac Island's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsJuly to August
These months have the strongest weather score in the monthly averages.
Hotels near Mackinac Island, United States
Marriott
City Express by Marriott Petoskey Harbor SpringsPetoskey, Michigan, USA
Courtyard Petoskey at Victories SquarePetoskey, Michigan, USA
Fairfield Inn & Suites GaylordGaylord, Michigan, USA
Residence Inn Traverse CityTraverse City, Michigan, USA
Fairfield Inn & Suites Traverse CityTraverse City, Michigan, USA
Courtyard Traverse CityTraverse City, Michigan, USA