How to Say "It's fall." in Korean? - 가을이에요.

"It's fall." in Korean is 가을이에요. (gaeurieyo)

가을 (gaeul) - Fall
겨울 (gyeoul) - Winter
겨울이에요. (gyeourieyo) - It's winter.
가을에 날씨 좋아요. (gaeure nalssi joayo) - The weather is nice in fall.
산 예뻐요. (san yeppeoyo) - The mountains are pretty.
하이킹해요. (haikinghaeyo) - I go hiking.
하이킹할 거예요. (haikinghal geoyeyo) - I'm going to go hiking.
누구하고 하이킹할 거예요? (nuguhago haikinghal geoyeyo) - Who are you going to go hiking with?