It's basically the equivalent of going uphill.
The two best things to do are:
up your cadence using an easier gear;In this way the wind resistance is lowered and you're able to cut through the wind better and without tiring your legs. In the case of gusts it is also important to relax the grip on the handlebars with fingers by the break levers and lower your speed.
lower yourself down towards the top tube by riding in the drops.