Rain in the Giza Plains
The Giza Plains goes through a unique weather cycle that will change the entire look, feel and layout of the zone. The weather cycle begins after you have reached Eruyt Village – prior to that, it will stay in the dry season.
So how do you change the weather in the Giza Plains?
The weather cycles naturally based on the time in the game. There is 1 hour of rainy season followed by 2 hours of dry season. You will have to allow the in-game clock to tick away until enough time has passed.
Note though that you have to leave the Giza Plains entirely in order for the shift to take place from "wet" to "dry" season or vice versa.