If you planning to travel to Arenal Eco Zoo, El Castillo, Costa Rica, 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 11:38 AM. The temperature feels like 65.9 with a humidity level of 93 so dress accordingly. Cloud coverage is 83 percent with visibility at 2.4 percent. Today’s UV index is 0, don’t forget the sunscreen if you need it! Today’s winds are traveling northeast at a speed of 7 MPH. At the end of the day don’t miss the sunset at 11:15 PM.