How are UVA affected by climate conditions?

[maupop]

Hi all, i was wondering how is the level of UVA affected by weather conditions like monsoon. For example does the thick monsoon that covers India in the summer would mean that India experience less UVA then let's say an European country which would be under a clean sky, bright sun?

Thank you!

[Enthalpy]

You don't get a sunburn under clouds.

[maupop]

It's not about sunburnt but about the amount of UVA that get blocked by the thickness of monsoons. I was wondering for those people who suffer of skin diseases and need to check the UVA constantly for protecting their health..

[D H]

You don't get a sunburn under clouds.

 

That's not necessarily true. The old wives' tale that it is possible to get sunburnt on a cloudy day has a strong basis in fact. Clouds are opaque to visible light. Much less so to UV. There are occasions where ultraviolet radiation under cloudy conditions can exceed clear sky values. Google "broken cloud effect" and "cloud enhancement of UV" for more.