Hernandez feels he has adapted quickly to English football and admits that he is enjoying his time at the Liberty Stadium.
"I'm loving the Premier League," he told the club's official website via defender Angel Rangel, who is acting as his translator.
"After a few years playing in La Liga it's a different type of football with more tempo and passion in the stands but the fact Swansea trust me as a player was the main reason for joining the club. In return, I will try to play my best football on the pitch.
"I'm delighted to score my first Swansea goal. It was only my third start of the season but the goal helped the team win three important points.
"I hope this goal will help me for the following games to get more confidence and become a regular in the team. I'm still settling at the club but I will work hard to keep my place."