If you planning to travel to Ko Similan National Park, Thailand, here is your 6-day travel weather forecast to make sure you have all the essentials needed during your stay. Start your day when the sunrises at 11:23 PM. The temperature feels like 90.65 with a humidity level of 83 so dress accordingly. Cloud coverage is 16 percent with visibility at 14.9 percent. Today’s UV index is 11, don’t forget the sunscreen if you need it! Today’s winds are traveling north-northwest at a speed of 8 MPH. At the end of the day don’t miss the sunset at 11:42 AM.