It's very common that babies and toddlers nap in the stroller, outside, year round. In my son's old daycare, they would put all the strollers outside during nap time (they were supervised, though). There are breathable rainproof and windproof covers parents use for the strollers. If you're interested, here's my story on it: https://medium.com/modern-parent/why-scandinavians-leave-their-babies-to-nap-outside-all-year-round-ceee0f00faef