Homes tend to stand up to harsh rains, as that is normal. What is not normal is 100 almost consecutive days of the heaviest torrential rain I have every witnessed, similar to a tropical wet season.
With this much rainfall, you get your building tested like never before. Our back lawn was flooded most of the time, with the water seeping into the building whatever way it can. There are new roof leaks, persistent puddles that seep into the brickwork. A stream of water running like a river around the property. High humidity means nothing is drying out. And so on...