What's the weather like flying to Seoul, Jeju Island, South Korea on July 25th this year?

Hello, I'm a Korean living in Beijing.

Generally, the rainy season begins in mid-July. But Jeju Island ended before Seoul.

So if you go to two places, first go to Seoul, and then go to Jeju Island.

Two other places are wet, so you have to take an umbrella. It must be very hot to arrive in Jeju Island at the end of July.

Please refer to!