Cool
Average highs are around 1°C, so pack for cooler days.
December verdict
Saint John, New Brunswick, Canada in December
Weather score15Poor
Poor for holiday weather
Average highs are around 1°C, so pack for cooler days. Sunshine averages 2.9h per day, so this is not one of the brighter months. Rainfall averages 145mm, so some wet days are possible.
December weather
Monthly averages
Temp
1°C
Rain
145mm
Sun
2.9h
Sea
8°C
Weather score
15
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 145mm, so some wet days are possible.
Limited sun
Sunshine averages 2.9h per day, so this is not one of the brighter months.
Cool sea
Sea temperatures average 8°C, so the water can feel cool.
Map
Weather map
Compare Saint John, New Brunswick, Canada with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
December1°C average high
December is on the cooler side of Saint John's year, useful if you prefer less intense daytime heat.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
December145mm average rain
December is one of Saint John's wettest months, so rain is likely to be a major planning factor.
Driest monthsFebruary to October
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
December2.9 hours average sun
December is one of Saint John'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
December8°C average sea
December is close to Saint John's yearly sea-temperature average, so swimming comfort is fairly typical.
Warmest seaJuly to October
Sea temperatures are usually near 13°C in this stretch, so swimming comfort is at its strongest.
Weather score
December15 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.
