Gizo Weather in September
During September, Gizo experiences high daytime temperatures of 28°C (82°F) and cooler nights around 26°C (79°F). September sits within the rainy season, so expect regular and often heavy rainfall.
Rainfall in Gizo in September
As part of the rainy season, Gizo sees around 19 days of rain in September, with an average of 261 mm (10 in). Rainfall this month is frequent and tends to be fairly heavy when it does fall. Packing waterproofs is a good idea.
Temperature in Gizo in September
September in Gizo sees highs of 28°C (82°F) and lows of 26°C (79°F) overnight. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. Nights stay warm at around 26°C (79°F), so light bedding and good ventilation are worth thinking about.If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Gizo. Our weather planner can help you explore destinations with more pleasant weather conditions.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Solomon Islands, check out our Gizo's climate page.
Gizo Temperature in September
Min Temperature
26°C (79°F)
Max Temperature
28°C (82°F)
Chance of Rain
62%
Precipitation
261 mm (10 in)
Rainy days
19 days
Humidity
76% *
Daily Historical Temperatures
47-year average (1976-2025)
Based on our historical records, temperatures in Gizo typically stay consistent throughout September, with daily highs averaging around 28°C (82°F). Nights are warm, with lows around 25°C (77°F).
Average temperatures in September
Daily Historical Precipitation
47-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Gizo in September
Browse day-by-day weather records for Gizo spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Gizo historical weather extremes in September
According to our 21 years of weather records for Gizo, the following extremes were recorded between 2004 and 2025.
- The hottest September day on record in Gizo reached 33°C (91°F) (September 6, 2017).
- The lowest daytime temperature in September was 25°C (77°F), recorded on September 17, 2005.
- The lowest overnight temperature recorded in September was 22°C (72°F) (September 3, 2011).
Best Places in Solomon Islands in September
Find out more about the weather in Solomon Islands and which places have the best travel conditions in this month. See all of Solomon Islands in September →
perfect weather
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tolerable
unpleasant
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What to Wear in Gizo in September
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Heavy rain is guaranteed, please bring a good poncho and waterproof everything!What To Do in Gizo in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Solomon Islands, check out our Gizo's climate page.
See the full Gizo climate overview or explore weather in Solomon Islands.
