Two lionesses resting on the plains of the park. The attack usually lionesses males to defend their cubs. To enter Kenya with a valid passport valid for six months required. Health. Sanitary conditions differ greatly to those we are used to prevent risks and travelers should take precautions with food. It is advisable to be vaccinated against tetanus, yellow fever, polio and hepatitis A and B and perform a prophylactic treatment against malaria. Climate The Masai Mara National Park has a mild climate and more humid than other areas of the rest of the country due to its altitude, above 1500 meters, and location. The rainy season usually from November to June and evening thunderstorms are quite common.