The Solomon Islands, lying within 12 degrees latitude of the equator and more than 1500 km from the nearest continent, has a climate typical of many tropical areas, being characterised by high and rather uniform temperature and humidity and, in most areas, abundant rainfall in all months. Rainfall is the least uniform of these climatic elements, as topographical effects cause significant variations between locations. The Islands, because of their low latitude, are less subject to the damaging effects of tropical cyclones than elsewhere in the Southwest Pacific, though cyclones still pose a serious threat each year.
There are two distinct seasons in the Solomon Islands; a wet season from November to April and a dry season from May to October. The average rainfall is approximately 2500-3000 mm however it can vary from west to east across the archipelago and can also depend on the island’s topography and elevation. The best time of year to visit for the general tourist is the dry season, when there is less rainfall and the temperature and humidity are lower.
The rainfall varies from region to region: 70% of Honiara’s annual rainfall occurs in the wetter 1/2 of the year; to the east, Santa Cruz averages between 280/420 mm per month.
The best itme for surfing is from November to April when the Northerly winds produce consistent swells of 3-6 feet on average and up to 10 feet, on the northern coasts of the islands of Malaita, Makira, Choisel and Santa Isabel. The southern islands of Gizo and Munda get more inconsistent swells but rise when there’s cyclonic activity in the Coral Sea. Wherever you surf in the Solomons, there are never any overcrowded breaks.
The water temperature is a consistent 26-30 degrees celcius all year round and visibility underwater can be 15-20 metres or more. The seas are generally rougher from June to September producing stronger currents, however diving is popular all year round.