If you can douse oils, primer and moisturiser onto your face and it still feel drier than the Sahara just a few hours later - you guest it, you've got dry skin.
Anyone with dry skin will know the lengths you must go to in order to find a base that makes you look fresh (not matte) and even toned (not cakey).
Dryness can occur seasonally, but chances are if you have dry skin you'll be prone to it no matter the weather. Aside from getting your two litres of water a day - yes hydrating from the inside really does help - finding moisturising make up products will be your saviour.
ESPECIALLY foundation. Nailing this first step in the make up application process will save you alot of time and money in the long run.