The Rainy Season

I live in Tokyo and it's sunny today. Today, it is sunny here. These days It has been rainy or cloudy recently, so I am spending an enjoyable comfortable day.
Unlike Europe and the United States, there is the a rainy season in Japan.
If you visit Japan at this time of year, you had better to bring an umbrella because even though it was sunny when you went out, it would might rain when you head for home. In the rainy season, that is an everyday occurrence.
Thank you for reading.

The rainy season

I live in Tokyo. Today, it is sunny here. Lately, it has been rainy or cloudy, so I am having a comfortable day. 
Unlike Europe and the United States, there is a rainy season in Japan.
If you visit Japan at this time of year, you should bring an umbrella because even if it was sunny when you went out, it can rain when you head back home. In the rainy season, this happens all the time.
Thank you for reading.

The rainy season

I live in Tokyo. Today, it is sunny here. These days it has been rainy or cloudy, so I am spending a comfortable relaxed day.
Unlike Europe and the United States, there is the a  rainy season in Japan.
If you visit Japan at this time of the  year, you had better to bring an umbrella because even though it was sunny when you went out, it would might rain when you head for home. In the rainy season, that is an everyday occurrence.
Thank you for reading.

Thank you for sharing. :-)

The rainy season

I live in Tokyo. It is sunny here today. In the last few days, it has been rainy or cloudy, but it is a comfortable temperture. [Your meaning was not clear].

 
Unlike Europe and the United States, it is the rainy season here in Japan.

If you visit Japan at this time of year, you had better to bring an umbrella because even though it might be sunny when you go out, it might [or it may] rain when you head for home.

In the rainy season, that is an everyday occurrence.

Thank you for reading.

[Your english is very good. Well done!]