Wear light and comfortable clothes during the day, and casual at night. There is hot weather in Campeche year around. The coolest period is from March to April, with 30 degrees in the daytime and 15 degrees at night. There are cooling showers in the afternoon from July to October. Check-in is at 3 PM and checkout at 12 noon. 110 volts Tips for your tours to archeological sites and visits to the caves: wear a hat, take sunblock lotion and a bottle of drinking water to cool off and re-hydrate yourself; wear comfortable rubber-soled shoes, they are a good choice to make climbing the pyramids and visiting the caves easier and safer. In archeological sites and caves follow the instructions of your guide.