You can grow Adeniums there, just make sure to use very well draining media and containers with drain holes, so in case of occasional rains, it will not stand in too wet media.
Winter time is typically dormancy time for Adeniums, though some like to keep them active at that time when brought indoors. I just wait for the Adeniums to show me it is time to sleep, when it slowly drops off leaves during Fall. Sometimes, it may hold on to the leaves and maybe in bloom but is still technically dormant. So you will have to be very careful in watering and do watering intervals. Typically I scale down watering when it starts showing signs of dormancy and eventually no watering at all during winter. I position the plant indoors by our south facing window, to keep it warm.
When your outdoor temps in Spring overnight is at least 50F and higher, you can slowly bring out the plant to acclimate once more to you outdoor conditions. But this varies of course, since your winter period is often longer than ours and more pronounced, so you may have to wait till late Spring to safely bring it out again to enjoy the warming up temps and to wake up properly by growing new leaves. Once new leaves have sprouted, you can water it regularly again. You can then decide if you want to lift the plant a bit from its container, to expose some more of its caudex, add some fertilizers, add some more well draining soil as needed etc. Your area may have higher humidity than we do here, so observe watering intervals as needed.
