Overview of climate and local COVID-19 transmission by @kathmoreilly @drrachellowe et al. In summary: we shouldn't assume transmission will decline substantially during the summer. https://cmmid.github.io/topics/covid19/current-patterns-transmission/role-of-climate.html

"The ability of SARS-CoV-2 to effectively spread globally, including in warm and humid climates, suggests that seasonality cannot be considered a key modulating factor of SARS-CoV-2 transmissibility"