Climate is tropical in Singapore and creates hot and humid conditions throughout a year. Average air temperatures are of 29-31C/84-87F and water temperatures are of 27-29C/80-84F. The hottest months are April and May, which makes them the most appropriate for visiting a country and diving in the surrounding waters. Approximate visibility is 10-20m/32-65ft. Currents are mild – 1-2 knots. Popular creatures in the area are anemonefish, filefish, catfish, moray eels, seahorses, groupers, electric ray, pufferfish, stonefish, stingrays, turtles, nurse sharks and butterflyfish.