When camping in Iceland, it´s always better to look first at the weather forecast to see what to expect at your desired destination. When exploring Iceland in a camper it´s so easy to change the plan and go to places where the weather forecast is good. The forecast is most often very accurate and some say that the best plan is just to follow them and drive around accordingly. In below links you can find the forecasts used by locals.
Weather forecast for Iceland:
Here you can also find the Aurora forecast for Iceland: