Guadalcanal Weather in September

With daytime temperatures of 30°C (86°F) and nighttime lows of 17°C (63°F), September in Guadalcanal brings high temperatures during the day. Some rainfall is to be expected during the month.

Rainfall in Guadalcanal in September

Past climate data indicates that roughly 6 days will see rain, totalling around 31 mm (1.2 in) for the month. Rain is scarce this month and when it does fall, it tends to be light. Unlikely to disrupt plans significantly.

Temperature in Guadalcanal in September

In September, Guadalcanal sees high temperatures, with highs of 30°C (86°F). Nights drop to around 17°C (63°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. At 17°C (63°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

If you prefer dry days with pleasant temperatures, April, May and October typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.