Since you have just been diagnosed you are probably just starting out with the meds to control your illness and decrease your fatigue. In 2-3 months you should start feeling better, and at that point you will see how the sun affects your fatigue level. For now, try to avoid anything that puts stress on your body.
Stressors include, but are certainly not limited to: sun, excessive heat, poor food choices (sugar & fat), doing too much, worrying too much, ....
If at all possible, cut back on your activities and let your body catch up from all the stress it's been under - the meds will take a while to kick in, and they need all the help they can get.
(I'm assuming they are giving you meds to help get the situation under control?? You didn't mention any....)
Lynnwood, Lupus & Sjogren's ModeratorDIAGNOSING LUPUS & LUPUS RESOURCES
"Life is far too important to be taken seriously" - Oscar Wilde