/**
 * Show product weight on category pages
 */

add_action('woocommerce_after_shop_loop_item', 'cc_show_weights', 9);

function cc_show_weights() {

  global $product;
  $weight = $product->get_weight();

  if ($product->has_weight()) {
    echo '<div class="product-meta"><span class="product-meta-label">Weight: </span>' . $weight . get_option('woocommerce_weight_unit') . '</div></br>';
  }

}