Iceland on Lumix S9, weather be a problem, lense options?

Iceland on Lumix S9, bought my first cam (a used LUMIX S9 for 650 pounds) is it okay for iceland weather if I keep it out of drenching it? Please advice?

I can still return the cam for a full refund (should I get something else?), I liked the LUT feature and the price and hence bought it, have a TT artisan 50mm Af f1.8 neo (85 pounds) and a Lumix 20-60 f3.5 - 5.6, which i am planning to return and get a cheap & fast 35mm lens (probably sg image 35mm f2.2).

Please advice.