Sunlight UV damage to whisky in clear glass?

Well, I just opened the bottle. What the hell. Still, I think this discussion is worthwhile. I knew after I drove away from the liquor store that I might as well have bought the other bottle in the back store room. Next time. There was one left. This whisky is rather rare in Portland. It's also overpriced when compared with other states.

I have absolutely no idea how long it takes to damage the whisky if a bottle is sitting in the sun. However as a rule I always try to buy bottles which haven't been sitting outside the box on display. You said you have already opened the bottle so, what's the verdict?

@rigmorole I guess you have to buy the other bottle and compare them so we all can get smarter :)

The Tomatin is excellent. A little thinner than expected but the flavor range on the nose and palette is quite good. Finish is pleasant but shorter than expected (judging by Ralfy's review; he was a bit overzealous in his pronouncements about this one, I think, but hey, that's great! I really do like seeing Ralfy enjoy himself with a good whisky that he likes a lot.)

I have no way to compare it to another bottle but I will be buying another so I can let you know the verdict. This said, I approve of the Decades. Delightful whisky for those that enjoy things on the sweeter side, but with some admitted complexity. Nice to hear from you gentlemen. I hope you have a great Sunday!

I have heard that 2-3 years of direct UV contact will destroy the tannins and accelerate oxidation. Colored bottles have a much better chance.

However, your bottle may be an exception. Do you know how long it has been there?

It was probably on the shelf for about a year. Could have been two years. It had a pretty heavy layer of dust on it. Not in direct sunlight but bright sunlight in through front windows. The case seemed a bit worse for wear, as well. A little beat up on the corners and very dusty.

I should have taken the other bottle. My mistake. It was in the backroom. Oh well. There is a chance the quality is compromised a bit, but I doubt by much. Thanks for your reply, JJ

I actually make it a point to not buy bottles on display and never any bottle that has been subject to sun exposure or heat source (display bottle near the window or near a heater).

I think this characteristic of mine is an extension of my wine hobby.

Might as well buy a bottle of A'Bunadh then. They come in a canister, taste great, and no UV damage.