The words on the sign indicate a 'Tsunami Hazard Zone'. Other signs throughout the town indicate which direction to go in if there is a tsunami. There are also shrines everywhere, memorials to the 2004 tsunami. All very sobering.
We ventured to the beach for the afternoon, despite it being probably 39 degrees and humid. Adam and I found our small area of shade, under the umbrella seats which you hire for 200 baht (about $8). Sellers come along every few minutes with their wares - everything from dresses to ice creams to massages! We said yes to the ice creams.