Carleton Martello Tower National Historic Site of Canada


The average daily temperature during July and August in the Saint John area is in the low twenties (20 o C). The unique topography of the city and its immediate surroundings, as well as the site's elevation and breezes off the Bay of Fundy, can create a micro-climate cooler and foggier than a few kilometres away.

Winters are variable in length and intensity. Springs begin damp and windy, edging into the comfort of full summer. Autumns can be sunny and clear.