There are many excellent WordPress templates suitable for an art portfolio. Here are a few recommendations:
Weston: Known for its visual impact and easy customization, it’s great for showcasing high-quality images of artwork.
Creatista: As the name suggests, it’s an ideal theme for illustrators or any artists who want to create a visually compelling portfolio.
Gutenix: This is a multi-layout and multi-purpose theme with several demos focused on art and portfolio presentation.
Remember to choose a theme that aligns well with your artistic style and makes navigation easy for your site visitors.