About the fair
Canada's largest defence and security trade show, organised by CADSI. It showcases technologies for land, naval and aerospace forces as well as police and border services. It draws over 12,000 registrants and around 300 exhibitors. Access is restricted to CADSI members, public servants, military personnel and accredited media.
Typical weather on these dates
Average of 2015–2024 measurements for May 2027 in Ottawa — the exact days of the fair, not the whole month.
19°Day
7°Night
11.5days with rain during the fair
Source: NASA POWER (measurements 2015–2024), coordinates © OpenStreetMap