The park lies in an area with a 200 day growing season, among the longest in Nova Scotia. Summer temperatures tend to be hot, with a mean daily temperature of 18 C. Kejimkujik experiences a long period of summer-like weather, which is generally a dry time of year. The Seaside Adjunct has summer air temperatures a few degrees cooler than inland. Summer water temperatures are only a few degrees cooler than the air. All of the lakes in the Park are shallow and tend to respond fairly quickly to fluctuations in air temperature.
Winter offers a short season of snow cover with very little snow build-up.
Temperatures may be slightly cooler than the adjacent coast but our winters are very brief. Total rainfall and snowfall varies a great deal in any month from year to year, however, all seasons, with the exception of summer and early fall, tend to be wet. The Park receives approximately 1400 mm of precipitation each year. Information last updated November 9, 2000.