They look like hawaiin leis. How beautiful. Alchemy&Ashes is right though it is too hot to wear something like that down here in Florida. Altough I do notice when the temps drop to 40 degrees F a lot of ppl are bundled up like the michilin tire man. I am from PA and recently moved here so cold in FL seems warm to me. What would be wearable here, would be to substitute crochet cotton and use smaller needles. This would make a lei(scarf) that is lightweight and cooler.
I have a good friend who does a lot of crochet and sells her handiwork at craft shows and flea markets. She always follows patterns to a T. She tells me she wants to try other yarns but cannot get the same results with her pattern. I tell her, make a swatch, check your gauge, change your needle size, decrease or increase stitches. You see that is where I am "bad", I don't follow patterns very well when it comes to knitting and crochet. I have in mind what I want it to turn out like and then I run with it. When I knit sweaters I buy yarn, make a swatch to check my guage and then I know what needles I want to use and what stitch. I draw a little diagram in my notebook and start casting on. I have been knitting and crocheting like that for over 20 years.