Honiara Weather in September

What's the weather like in Honiara (Guadalcanal) in September 2021?

The climate in Honiara during September can be summarized as hot, humid and damp.

September is in the spring in Honiara and is typically the 6th coldest month of the year. Daytime maximum temperatures average around a steamy 30°C (87°F), whilst at night 22°C (72°F) is normal.

Honiara weather averages (imperial / metric)
Daytime temperature 30.3°C 86.5°F
Nightly temperature 22.1°C 71.8°F
Average temperature 26.2°C 79.2°F
Daily sunshine 6.2 hrs
Avg rainfall 114 mm 4.5 ins
Rainy days 14 days
Sea temperature 28.5°C 83.2°F
Humidity 77%
Windspeed 4.7kph 3 mph

On average September is the 3rd driest month of the year in Honiara with around 114mm 4.5 inches of rain making it a damp time to visit. This rainfall is typically spread over 14 days, although this may vary considerably.

On the flip side this corresponds to an average of 6.2 hours of sunshine per day.

September temperatures in Honiara

Honiara average temperature in September

September rainfall

Honiara average rain in September

September hourly sunshine

Honiara average rain in September

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Honiara in September 2021.

Other monthly averages

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Honiara weather stats

Honiara weather statistics
Hottest month: January 30.3°C 86.5°F
Driest month: June 100mm 3.9ins
Sunniest month: August 6.3hrs
Coldest month: July 29.1°C 84.4°F
Wettest month: March 331mm 13ins
Map showing location of Honiara (-9.43333, 159.95)

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