Grand Manan, in comparison to other New Brunswick communities has a mild climate. Spring, Summer and Fall months present a very comfortable climate. Winter months offer an inconsistent weather pattern of snow, rain, freezing rain and mild weather. Since 2000, the average annual precipitation has been 859.8mm with August being the driest month (35mm) and October (112mm) providing the most precipitation.
A breakdown of monthly average temperatures between 2000-2008 is provided below:
Month
Average High
Average Low
January
−0.6 °C (31 °F).
−7.1 °C (19 °F)
February
−0.3 °C (31 °F).
−8.1 °C (17 °F).
March
3.7 °C (38.7 °F).
−4.5 °C (24 °F).
April
9.7 °C (49.5 °F).
1.1 °C (34.0 °F).
May
13.8 °C (56.8 °F).
4.9 °C (40.8 °F).
June
19.2 °C (66.6 °F).
9.5 °C (49.1 °F).
July
22.8 °C (73.0 °F).
13.0 °C (55.4 °F).
August
22.7 °C (72.9 °F).
11.8 °C (53.2 °F).
September
19.5 °C (67.1 °F).
9.6 °C (49.3 °F).
October
13.6 °C (56.5 °F).
5.8 °C (42.4 °F).
November
8.3 °C (46.9 °F).
2.3 °C (36.1 °F).
December
1.4 °C (34.5 °F).
−4.6 °C (24 °F).
Since 2001, the highest recorded temperature at Grand Manan Community School, located in Grand Harbour, was 32.9 °C (91.2 °F) on July 3, 2002. The lowest recorded temperature −20.9 °C (−5.6 °F) occurred on February 1, 2005. Though higher temperatures can be found in more sheltered areas of the island, these extremes are not typically experienced.
The Mananook website is produced by two newcomers to the Island. It provides a personal, and as yet, incomplete exploration of our new home. Check out the official Grand Manan Tourism Association website for more complete information.
