>But there is some evidence — and we’re working on quantifying it — that coronaviruses do transmit less efficiently in the warmer weather. So it’s possible that we will get some help from that, but I don’t think that will solve the problem, as evidenced by the fact that there’s transmission in Singapore, on the equator.
There have been several research about seasonal influenza and how it correlates with weather, like temperature but especially humidity
https://journals.plos.org/plosbiology/article?id=10.1371/jou...
https://www.sciencedirect.com/science/article/abs/pii/S01634...