Rain can add water to the pool, but it does not fix a leak.
If the pool is leaking, the leak is still there after the rain stops. A heavy rain may raise the water level for a short time, but if the pool keeps dropping again, that is a sign the water is still going somewhere.
Rain can also make the problem harder to see. The deck, grass, and soil may already be wet, so a wet spot from a pool leak may not stand out. The pool may look full for a day or two, and the homeowner may think the problem went away.
Why South Florida Makes This Harder
In South Florida, rain, evaporation, splash-out, autofill, and backwashing can all confuse the picture. That is why we look at the pattern. How much water is the pool losing? Does it lose more with the pump on or off? Does it stop at a certain level? Is the autofill running? Is the spa draining down?
If your pool keeps losing water after rain, do not assume the rain solved it. Watch the water level and call a leak specialist if the loss continues.
Free tools from Leak and Subsurface Locators:
Free Guide: Stop Guessing Pool Leaks → Free Evaporation Calculator → Free Leak Analyzer →