It is a good idea to shade tank... Other than that it has to get up to about 145° f. (If I remember what gas technician told me) before any heat will cause over pressure situation and cause tanks safety pressure relief valve to blow off excessive pressure. Believe internal tank pressure must be about 375PSI to cause this.... IF pressure relief valve releases you will have pure propane venting to atmosphere is area near tank till pressure is at a safe level again (in tank)... Don't think it would be good idea to have tank near any fresh air "intakes" for residence or studio as a precaution.
Sun may cause hose to degrade faster, but that may take years... Casual inspection will tell you if there is a problem with hose (dried out looking and cracking) .... When you think about it there are thousands of propane tanks sitting out in all kinds of weather (heat & cold) all over the world and most do not cause any problems.
Dale
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