OUTDOOR TRANSMISSION
It's been known since April of 2020 that casual contact outdoor transmission is extremely rare.
China study suggests outdoor transmission of COVID-19 may be rare April 27, 2020 "only one instance of outdoor transmission — involving two men talking together in the village of Shangqiu, Henan province — was found “among our 7,324 identified cases"
Outdoor transmission accounts for 0.1% of State’s Covid-19 cases April 5, 2021 "Of the 232,164 cases of Covid-19 recorded in the State up to March 24th this year, 262 were as a result of outdoor transmission, representing 0.1 per cent"
Outdoor Transmission of SARS-CoV-2 and Other Respiratory Viruses- A Systematic Review - The Journal of Infectious Diseases - November 20, 2020 odds of indoor transmission was very high compared to outdoors (18.7 times; Opinion: I don't know how they computed 18.7 times, which is about 7% outdoor cases. They cite the two above largest studies which indicate less than 1/1000 which is .1%.
Outdoor environments shut down.
Surf’s up and so are new beach rules to prevent coronavirus spread - Fortune "Masks are now required at Los Angeles County beaches" Opinion: But mandates are in place. Hawaii CLOSED beaches for months, some islands allowing walking only.