This is a 3 season tent, so can be used for most of the year. Buyers beware: It is not the lightest of tents - this is the main comment from a review on Amazon, but to be fair you do get a sizable porch and it's a good brand for this price on a 3 season tent. For all you tent comedians, it's still Autumn.
Spacious with plenty of room for three, the Fortress fits within Robens’ Sierra range which features tents that have quality details often found only on more expensive tents. The geodesic concept creates a free-standing tent shape which is easy to pitch and has a crossed pole construction which increases stability and creates a roomy feel inside.