<font color="#ff0000" style="background-color: inherit;">*My opinion of course but there are different ways to go about writing this piece. My thoughts are in red and correction places in yellow. Strikethru is a word to be removed or changed. I hope this helps.*</font>

Now, the humidity in Japan is getter <strike>higiher</strike> <font style="background-color: yellow;">higher</font> day by day because <strike>of in</strike> <font style="background-color: yellow;">it is in</font> the middle of rainy season here. The country of Japan is famous for <strike>kaid of exsisting the</strike> <font style="background-color: inherit;"><font color="#ff0000"><font style="background-color: inherit;"><em>*not sure what was meant here</em>*</font></font></font> <font style="background-color: rgb(255, 255, 0);">having</font> four seasons like spring, summer, autumn and winter.

<strike>So</strike> International visitors definitely enjoy seeing something of doing kind of activity, but also this country is famous for <strike>exsiting</strike> the rainy season. <font color="#ff0000" style="background-color: inherit;">*I think this is abit better: "International visitors would definitely enjoy sight-seeing as a kind of activity but the country also is known for the rainy season." It might help to give more information on why the rainy season is famous as this seems to be whole point of this particular paragraph.</font>

 Above all, the rainy season of this year is kind of strange, comparing to annual year's, <font color="#ff0000" style="background-color: inherit;">*Are you talking about this year's rainy season and comparing it to another year? Maybe something like "This year's rainy season is strange compared to other years."</font><font color="#ff0000" style="background-color: inherit;"> </font><font color="#00e000" style="background-color: rgb(255, 255, 0);"> </font>

I feel this way, because the previous season was really good. I mean we had many sunny days but towards the end of the season (where we are now) we<strike> flequently</strike> <font style="background-color: rgb(255, 255, 0);">frequently</font> experience heavy rain shower. So this is how we feel about this now: The rainy season of this year is kind of <strike>starange </strike><font color="#00e000" style="background-color: rgb(255, 255, 0);">strange. </font> When we get through this strange season, we might feel a kind of comfort. Yes it will be summer! I can't wait this!.

*Good start.. the last part here just needs a better flow of sentences describing so I just wrote it as best I could, trying to keep as close as possible to your original ideas.