When Are Gulf Waters the Most Transparent in South Walton?

Posted by Robin Maynard on Friday, January 17th, 2025  2:29pm.


Why South Walton Stands Out for Crystal-Clear Waters

Just Google the best beaches for transparent water in Florida, and you'll undoubtedly find South Walton on the list. Also known as the Emerald Coast, the region’s white sand provides a striking contrast that enhances the emerald-green hues of the Gulf waters. Beachgoers flock to these shores year-round, but some months are particularly ideal for experiencing the clearest, most pristine conditions.

Best Times for Clear Waters in South Walton

The most transparent waters in South Walton typically occur in late spring through early summer, with May and June being especially favorable. During this period, the weather is warm, and the Gulf waters are generally calm, allowing sand and sediment to settle. This results in stunningly clear, turquoise water that’s perfect for swimming, snorkeling, or simply soaking in the beauty of the shoreline.

Late summer into early fall, particularly in September, can also bring crystal-clear waters. However, the clarity during this time can be influenced by tropical activity, as hurricane season peaks from August through October. For consistently beautiful, clear water, plan your visit in May or June—just before the summer crowds arrive and when water conditions are typically pristine.

What Gives the Gulf of Mexico Its Emerald-Green Color?

The Gulf of Mexico’s signature emerald-green hue is a result of a fascinating natural process. Nutrient-rich waters from large river systems, such as the Mississippi River, and local sources like Choctawhatchee Bay, feed into the Gulf. These nutrients encourage the growth of phytoplankton (microscopic algae). When light reflects off these organisms, combined with the white sandy seafloor, it creates the distinct green tint unique to the Emerald Coast.

Phytoplankton also produce chlorophyll, which absorbs red and blue light while reflecting green tones. The more phytoplankton present, the greener the water appears. Conversely, when phytoplankton levels are lower, the water takes on a bluer hue. This delicate balance contributes to the mesmerizing beauty of South Walton’s beaches.

What About “June Grass”?

"June grass," scientifically known as Cladophora, is a type of algae that typically appears in the Gulf of Mexico around late spring and early summer. While it’s most common in June, it can linger into July and August, depending on water temperature, nutrient levels, and currents.

June grass floats near the shore, sometimes making the water murky or giving it a greenish tint. Although harmless to people and marine life, it can be inconvenient for beachgoers when it’s particularly dense. The algae often accumulates on the shoreline, where it can become stringy, slimy, and occasionally odorous. However, the presence of June grass is usually temporary, and shifting currents often clear it from the beaches within days.

Plan Your Visit for Optimal Clarity

For the best chance to enjoy South Walton’s crystal-clear waters, visit during May or June, when the Gulf is calm and conditions are ideal. Even if you encounter natural phenomena like June grass, the beauty and charm of South Walton’s beaches remain unparalleled.