Does Humidity Affect WiFi Coverage

Thanks for confirming what I thought about radio propagation being sensitive to weather. I think we have all had the experience of radio/TV reception being better in crisp, cold weather than on warm, humid days. I assumed this phenomenon would affect TC wifi propagation as well.

While additional testing certainly will be useful, meanwhile I'm wondering if there is anyone else on this forum who has also seen this kind of degradation of performance due to humid air in the home.

Thanks to both. One of the rooms, which is most affected, requires a wifi path through a short distance outside, where it certainly is hot and humid this time of year here. WiFi was fine in this room until the past, unusually hot, month. Interestingly, my iMac in this "worst" room still maintains an excellent connection, but iPad and Apple TV in the room have the reported problem.

Your responses make me think I am on the right track. This is my first year in this home, and I am still learning what causes what. Looks like things might get better again as summer winds down.

Updated experience. While obviously not a burning issue to thread readers, my experience in the past four months makes me think I am on the right track with this. Wifi reception from my Time capsule to my farthest room is much better now that heat and humidity have gone down here. Not very technical, I guess, but I conclude heat and humidity do have an effect.

Thanks to both. That is my understanding, too, but I received rather tepid responses when I raised this possibility last August. Hopefully my experience since then will be a data point to help others who are trying to understand why they are experiencing unexplained Wifi degradation during hot, humid weather.