Cool
Average highs are around 19°C, so pack for cooler days.
September verdict
Gravenhurst, Ontario, Canada in September
Weather score34Poor
Poor for holiday weather
Average highs are around 19°C, so pack for cooler days. Sunshine averages 5.2h per day, enough for a balanced month. Rainfall averages 107mm, so some wet days are possible.
September weather
Monthly averages
Temp
19°C
Rain
107mm
Sun
5.2h
Sea
19°C
Weather score
34
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 107mm, so some wet days are possible.
Some sun
Sunshine averages 5.2h per day, enough for a balanced month.
Cool sea
Sea temperatures average 19°C, so the water can feel cool.
Map
Weather map
Compare Gravenhurst, Ontario, Canada with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September19°C average high
September sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
September107mm average rain
September is wetter than Gravenhurst's yearly average, so flexible plans matter more.
Driest monthsFebruary to August and October
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September5.2 hours average sun
September sits close to Gravenhurst's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
September19°C average sea
September is one of Gravenhurst's warmest sea months, when swimming comfort is usually strongest.
Warmest seaJuly to September
Sea temperatures are usually near 19°C in this stretch, so swimming comfort is at its strongest.
Weather score
September34 weather score
September sits close to Gravenhurst's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsJuly to August
These months have the strongest weather score in the monthly averages.
