It would be better to simply pour the beer over your skin to cool yourself down than drink it. Most authorities recommend a sunscreen with an SPF factor of 15 or above. Check the lip balm to make sure it has an SPF factor to block ultraviolet radiation. Choose clothes carefully. Lightweight, loose-fitting garments allow air to circulate between the skin and the fabric, promoting evaporative cooling.
Light colors help reflect the heat.
Pack a lightweight long-sleeve shirt and pants to use if you stay longer than expected. Bring a wide-brimmed, loose fitting hat. There should be several inches of room between the top of your head and the cap to allow air circulation so sweat can evaporate, thus cooling the head. Tight-fitting caps are a bad idea, because they increase heating. Regular exposure to UV radiation leads to cataracts and other eye disorders.