TLast week the rainy season has finished last week.It’ended. It’s always so hot and humid outside everyday.The most. The hardest part for me is where I go into or going out a buildingn I enter/exit a building, since my body cannot adapt to temperature changes.

The rainy season has finished last week -> Last week the rainy season ended: Typically time phrases are put at the front

It’s so hot and humid outside everyday -> It’s always so hot and humid outside

The most hardest part for me -> The hardest part for me: "hardest" is the extreme, so "most hardest" is incorrect.

go into or going out a -> enter or exit -> enter/exit

Because my body cannot adapt temperature changes.

Appended to previous sentence.

It’s not only the hoeat, but also having air conditioning on puts a strain on themy body.

hot -> heat: Heat is the correct noun

on the body -> on my body: We're talking about your body here.

I feel that the temperature is getting hotter year band hotter every year.

hotter year by year. -> hotter and hotter every year.

I’m worryingied that we cannotwon't be able to walk outside oin summer in nearthe future.

Tense change as we're now talking about a potential future.

The rainy season has finishended last week. It’s so hot and humid outside every day. The most hardest part for me is where I go into or going out of a building.

Because mMy body cannot adapt to temperature changes.

I feel the same problem.

It’s not only the hot, but also havingHaving the heat and air conditioning on puts a strain on themy body.

I’m worrying that we cannot walk outside oin summer in the near future.