Both my GP & consultant have told me that fair weather has no effect on arthritis whatsoever, and there is no research to suggest otherwise. I'd agree to a lot of this, however! Just got back from Malta & my knees and feet seemed to love the sun! Had enbrel as soon as I got back (just as I was feeling great, back to reality). Does anyone else feel better with sunshine? All doctors I've spoken to say it's a fallacy that warmer weather helps.