In September, the climate in the Solomon Islands is fair, but it can vary depending on the regions or cities. Average temperatures are around 28°C, with values ranging approximately from 25°C to 30°C depending on the city and time of day.
Temperatures are warm without being necessarily excessive: average readings reach up to 30°C at the warmest part of the day, and about 25°C at the coolest hours.
Rain is a real factor for travel to the Solomon Islands in September: monthly totals can reach 600 mm, with up to 22 days of precipitation in the most exposed areas.
If you are aiming for the seaside, swimming conditions are pleasant: sea temperature usually ranges between 28°C and 29°C.
The best options for cities and places remain fairly good this month, for example: Honiara, Guadalcanal Island, Malaita Island and San Christobal Island.
Overall, the month of September remains feasible to travel to the Solomon Islands, but it is better to choose the region or city carefully according to your itinerary.
In September, the most suitable activities in the Solomon Islands are: Watersports, Beach and swimming, Boat trip and cruise, Diving and snorkeling and Animal observation.
