Cool
Average highs are around -6°C, so pack for cooler days.
December verdict
Marathon (Ontario), Canada in December
Weather score20Poor
Poor for holiday weather
Average highs are around -6°C, so pack for cooler days. Sunshine averages 2h per day, so this is not one of the brighter months. Rainfall averages 64mm, which is relatively low for holiday planning.
December weather
Monthly averages
Temp
-6°C
Rain
64mm
Sun
2h
Sea
4°C
Weather score
20
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 64mm, which is relatively low for holiday planning.
Limited sun
Sunshine averages 2h per day, so this is not one of the brighter months.
Cool sea
Sea temperatures average 4°C, so the water can feel cool.
Map
Weather map
Compare Marathon (Ontario), Canada with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
December-6°C average high
December has some of the coolest average daytime highs of the year, so pack for fresher conditions.
Warmest monthsMay to September
This stretch sets the upper range for average daytime heat.
Rain
December64mm average rain
December sits on the drier side of Marathon (Ontario)'s year, which helps with sightseeing and transfers.
Driest monthsJanuary to May and November to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
December2 hours average sun
December is one of Marathon (Ontario)'s cloudier months, so sunshine-led plans are less reliable.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
December4°C average sea
December is below Marathon (Ontario)'s yearly sea-temperature average, so swimming can feel fresher.
Warmest seaAugust to September
Sea temperatures are usually near 14°C in this stretch, so swimming comfort is at its strongest.
Weather score
December20 weather score
December is one of the weakest weather-score months, when the overall mix is less favourable than the rest of the year.
Best weather monthsJuly to August
These months have the strongest weather score in the monthly averages.
