Wood carvings in humid environments require special finishes to prevent moisture damage, warping, and mold growth. The most common and effective finishes for such conditions include:

1. Marine-Grade Varnish: Designed for boats, this varnish offers superior moisture resistance and UV protection, making it ideal for humid climates.

2. Tung Oil: A natural oil that penetrates deep into the wood, creating a water-resistant barrier while enhancing the wood’s natural beauty.

3. Epoxy Resin: Forms a thick, waterproof seal that protects wood from humidity and even submersion, though it may alter the wood’s appearance.

4. Polyurethane: Available in water- and oil-based formulas, polyurethane provides a durable, moisture-resistant coating suitable for indoor and outdoor carvings.

5. Shellac: While not as moisture-resistant as other options, shellac mixed with wax can offer moderate protection for indoor pieces in mildly humid areas.

For long-lasting results, apply multiple thin coats and sand lightly between layers. Regular maintenance, such as reapplying oil finishes, can further extend the life of your wood carvings in humid conditions. Choose the finish based on your project’s exposure level and desired aesthetic.