Haiku-Pauwela Weather in September

What's the weather like in Haiku-Pauwela (Hawaii) in September 2025?

The climate in Haiku-Pauwela during September can be summarized as hot, humid and wet.

September is in the fall / autumn in Haiku-Pauwela and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a muggy 29°C (84°F), whilst at night 19°C (67°F) is normal.

Haiku-Pauwela weather averages (imperial / metric)
Daytime temperature 28.8°C 83.8°F
Nightly temperature 19.4°C 66.9°F
Average temperature 24.1°C 75.4°F
Daily sunshine 8.5 hrs
Avg rainfall 133 mm 5.2 ins
Rainy days 8 days
Sea temperature 26.8°C 80.3°F
Humidity 72%
Windspeed 19.1kph 12 mph

On average September is the driest month of the year in Haiku-Pauwela with around 133mm 5.2 inches of rain making it a wet time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.

On the flip side this corresponds to an average of 8.5 hours of sunshine per day.

September temperatures in Haiku-Pauwela

Haiku-Pauwela average temperature in September

September rainfall

Haiku-Pauwela average rain in September

September hourly sunshine

Haiku-Pauwela 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 Haiku-Pauwela in September 2025.

Other monthly averages

Best places to visit in September

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Haiku-Pauwela weather stats

Haiku-Pauwela weather statistics
Hottest month: August 28.5°C 83.3°F
Driest month: September 133mm 5.2ins
Sunniest month: September 8.5hrs
Coldest month: February 25°C 77°F
Wettest month: March 355mm 14ins
Map showing location of Haiku-Pauwela (20.92187, -156.30508) Haiku-Pauwela map pin © Google

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