I have used this in strong winds (30 mph gusts) in a beach setting and in wooded hill country area. Both times I had heavy rain and winds. Obviously it doesn't keep out rain but it's not intended to. For the wind, it is extremely important to properly anchor all guy lines to sturdy stakes. I did not use the included stakes, rather, I used some heavy duty ones I had for sand use. It comes with several sandbags for anchoring which I did use. Yes, the wind did blow the sides down and rain concave the roof as it puddled. But, it popped right back into place. The most impressive thing for me was that wind did not rip the tabs of the shelter. If you have camped in high winds, you'll know that struggle. Again, I think that was due to properly using ALL of the guy lines. You can YouTube how to properly secure guy wires to stakes and the associated knots. I also purchased the side panels. I was not impressed with those because they only loosely attach to the sides. In the wind, they easily detach and do not lay flush with the sides. I purchased the floor tarp but haven't used it yet. Just as a reminder, if it does get wet, be sure to air it out when you get home so it doesn't mildew. It's easy to pop up and easy to fold down even in wind doing it by myself. I purchased the 10x10 and it fits over the typical park table with some room to move around.
Rating: [5 of 5 Stars!]