Mild
Average highs are around 22°C, so days are mild rather than hot.
August verdict
Thunder Bay, Ontario, Canada in August
Weather score47Mixed
Mixed for holiday weather
Average highs are around 22°C, so days are mild rather than hot. Sunshine averages 8.3h per day, so bright days are a strong part of the month. Rainfall averages 88mm, so some wet days are possible.
August weather
Monthly averages
Temp
22°C
Rain
88mm
Sun
8.3h
Sea
16°C
Weather score
47
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 88mm, so some wet days are possible.
Bright
Sunshine averages 8.3h per day, so bright days are a strong part of the month.
Cool sea
Sea temperatures average 16°C, so the water can feel cool.
Map
Weather map
Compare Thunder Bay, Ontario, Canada with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
August22°C average high
August is one of Thunder Bay'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
August88mm average rain
August is one of Thunder Bay's wettest months, so rain is likely to be a major planning factor.
Driest monthsJanuary to April and November to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
August8.3 hours average sun
August is brighter than Thunder Bay'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
August16°C average sea
August is one of Thunder Bay's warmest sea months, when swimming comfort is usually strongest.
Warmest seaAugust to September
Sea temperatures are usually near 16°C in this stretch, so swimming comfort is at its strongest.
Weather score
August47 weather score
August scores above Thunder Bay'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.
