Mild
Average highs are around 25°C, so days are mild rather than hot.
Weather Guide
Apostle Islands National Lakeshore, United States Average Monthly Weather
Weather score35Poor annual avg
Best months: July, August, June
Across the year, average daytime temperatures are around 11°C, sunshine averages 6.3h per day, and rainfall totals about 797mm. Sea temperatures average 7°C across the year.
Annual weather
Annual averages
Temp
11°C
Rain
797mm
Annual total
Sun
6.3h
Sea
7°C
Weather score
35
Poor avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 100mm, so some wet days are possible.
Bright
Sunshine averages 8.5h per day, so bright days are a strong part of the month.
Cool sea
Sea temperatures average 18°C, so the water can feel cool.
Map
Weather map
Compare Apostle Islands National Lakeshore, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
August25°C average high
August is one of Apostle Islands National Lakeshore'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
August100mm average rain
August is one of Apostle Islands National Lakeshore's wettest months, so rain is likely to be a major planning factor.
Driest monthsJanuary to March and December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
August8.5 hours average sun
August is brighter than Apostle Islands National Lakeshore'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
August18°C average sea
August is one of Apostle Islands National Lakeshore's warmest sea months, when swimming comfort is usually strongest.
Warmest seaAugust to September
Sea temperatures are usually near 18°C in this stretch, so swimming comfort is at its strongest.
Weather score
August54 weather score
August scores above Apostle Islands National Lakeshore'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 Apostle Islands National Lakeshore, United States
Marriott
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