[gadflyinyoureye]

30 minutes with large skin contact. Take off your shirt or have a tank top.

[gtirloni]

That's enough for skin cancer where I live. 5min tops.

[smilespray]

It's enough for frostbite where I live.

[panxyh]

It’s enough for mosquitoes where I live.

[siftrics]

Not trying to argue; just chipping in:

I regularly sit outside with my shirt off in ~20F weather and don't get cold enough to have to go inside.

Direct sunlight makes all the difference. With the sun, sub freezing air temperatures can actually leave you feeling quite warm.

[ycombinete]

I guess that depends on time of day, and ozone health, I assume you live in Australia?

I live in the Middle East and the uv index in the am (before 9am) in direct sunlight isn’t that crazy.