In the dry season, April to October, swells swinging up from the Roaring 40s and Howling 50s march south-west across the Indian Ocean. Combined with south-east trade winds the west of Java around Cimaja holds the most viable options. Sea temperatures remain steady at around 28°C or 82°F. The centre of the island is mainly fringed by offshore islands or treacherous volcanic beaches devoid of surfable reefs. Until G-Land at eastern end holding perhaps the most famous wave in the region. Even during the off season when the trade winds switch to west there are still classic waves to be had at both ends of the island.