Doesn't matter if your cameras are under soffits, even when there is lateral wind, there is still a chance for water droplets to appear on the camera. Does anyone know if RainX works?
Rain X might work but may be too caustic to lens. Using gravity might be the only chance (by pointing the camera down a bit). The rain shields don't do much either especially when there is a lot of wind
That's why, in the old days when it was called CCTV cameras, they were installed in a relatively massive housing with a windshield and windshield wiper. I threw out the last one I had about fifteen years ago.