Communities include: Climate data is from Yarmouth Airport which is located 15 km (9.3 mi) south of the geographical coordinates of the municipality.

Being near the -3 °C isotherm in the average of the coldest month (east of the city), causing that in peninsular areas like Yarmouth Bar and Cape Forchu are between a transition band for the oceanic climates (Cfb).

[7][8] During this period of time, the weather can be unsettled and cloudy due to the Nor'easters coming up the coast from the southwest.

[7] The average annual snowfall is 204.7 cm (80.6 in), which can come from Nor'easters from the southwest with a maximum snow depth of 9 cm (3.5 in) in January, owing to its mild winters, among the mildest in Canada east of the Rockies.

An outstanding feature is Yarmouth's late-fall to early-winter precipitation maximum, owing to the combination of intense storm activity from November to January and relatively more-stable summers, with thunderstorm activity here much less frequent than in the U.S. Northeast, Mid-Atlantic and points southward.