I said I'd post more about weather, humidity and CoVId.
The conservative view is that warmer, more humid weather will bring down transmission rates.
Keep in mind that this is a very modest effect, but every little bit helps.
It is very unlikely to go away altogether just because of weather.
Still, studies are underway in places like Hawaii, Tahiti, Taiwan and Malaysia where, despite some high population density (especially in the last two) and use of public transport (or in the case of Oahu, use of circulating air in high rise office buildings), rates have remained very low. Other factors are at play.
For example, where there are subways, the temperature may be lower underground (I don't know of any studies about humidity in subways). Brazil remains perplexing but IMO, the total inability of the government to do testing and its reluctance to shut down or enforce social distancing are factors - plus...well, it's fall in the southern hemisphere.
Hawaii and Tahiti are permanently in the tropics and do not have the same seasonality. Southern Mexico and Guatemala also seem to be faring better than northern Mexico (though it's so hard to tell, as people are obviously dying of CoVid without diagnosis).
Still, social distancing, masks, handwashing and warmer weather (all together) may help us curb the pandemic until fall/late fall. Some universities seem to be planning on lower enrollments for the January-April segments and trying to amp up summer sessions.
There are big exceptions to all of this (Ecuador) but many other variables as well.