Climatologically speaking, August was pretty uneventful; that is, until Erin arrived at the end of the month and brought some much needed moisture to the area. Erin dumped enough moisture to push the total precipitation anomaly above average across the south, however, the north remained dry and below average (based on 30-year climatology (1981-2010)). In terms of temperature, the average anomaly for the province was normal (0.0C).
See all the details in the attached final report for August and an outlook for September from Jill Maepea, Warning Preparedness Meteorologist / Client Service Operations Atlantic, Environment and Climate Change Canada / Government of Canada.
Summer (June, July, and August) 2019 in New Brunswick was slightly cooler (-0.6C) and drier (80%) than the 30-year climate normals (1981-2010).
For the longer term, please also see attached for the detailed summer 2019 report and an outlook for fall 2019.