Lord of the Flies, by William Golding, is the story of an airplane full of English schoolboys which is shot down during World War II. The boys survive, though none of the adults do, and the story begins the morning after the plane deposits the boys on a tropical island; like most tropical islands, the weather on this island is generally very good. In fact, we have no specific evidence that it ever even rained during the time the boys spent on the island.
We do know, however, that it is hot. The opening paragraph of the novel says the "jungle was a bath of heat." A short time later, Ralph takes his first real look across the shimmering water and sees the following scene:
Out there, perhaps a mile away, the white surf flinked [flashed and winked?]on a coral reef, and beyond that the open sea was dark blue. Within the irregular arc of coral the lagoon was still as a mountain lake--blue of all shades and shadowy green and purple. The beach between the palm terrace and the water was a thin stick, endless apparently, for to Ralph's left the perspectives of palm and beach and water drew to a point at infinity; and always, almost visible, was the heat.
Later we read that Ralph, in particular, is annoyed by the heat, salt, and sand which make his clothes scratchy and prompt him to tie his hair back.
In general, the island is beautiful and the weather is clear but hot.