The weather in Japan changes rather frequently, and it often rains, so they usually have umbrellas with them and use them often. However, I haven’t seen much of either rain nor umbrella use in anime. Perhaps the anime ideal weather is sunny, or maybe it’s just convenient in terms of the setting for the weather to be clear most of the time.
Notice: they all have UMBRELLAS! Unlike in America, where people often go without umbrellas, especially in places like Austin, Texas where it rains so rarely (unfortunately). Sometimes I think I live in the wrong country; rain is my FAVOURITE WEATHER yet here it hardly rains. Maybe I should move to Japan. Or England.
Not only is the weather perfectly clear in both this screenshots, but no one is carrying an umbrella.