I remember sitting under the sun on the veranda that ran around the outside of our house when I was little.
I used to sunbathe in the Engawa, the Japanese style sunroom that wrapped around our house, when I was a kid.
ーI remember sitting under the sun on the veranda that ran around the outside of our house when I was little.
「小さい時、縁側で日向ぼっこをしたのを覚えている」
to sit under the sun で「日向ぼっこをする」
縁側は日本のものなので、the veranda that ran around the outside of our house「家の外側を取り囲む屋根のついたスペース」のように説明すると良いでしょう。
ーI used to sunbathe in the Engawa, the Japanese style sunroom that wrapped around our house, when I was a kid.
「子供の頃、縁側（家を取り囲む日本風のサンルーム）で日向ぼっこをよくした」
to sunbathe で「日向ぼっこをする」
縁側は the Japanese style sunroom that wrapped around our house「家を取り囲む日本風のサンルーム」のようにも説明できます。
ご参考まで！
カナダ 
