Warm
Average highs sit around 30°C, giving warm days by monthly-average standards.
September verdict
Honolulu, Hawaii, United States in September
Weather score77Very good
Very good for holiday weather
Average highs sit around 30°C, giving warm days by monthly-average standards. Sunshine averages 9h per day, so bright days are a strong part of the month. Rainfall averages 89mm, so some wet days are possible.
September weather
Monthly averages
Temp
30°C
Rain
89mm
Sun
9h
Sea
27°C
Weather score
77
Very good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 89mm, so some wet days are possible.
Bright
Sunshine averages 9h per day, so bright days are a strong part of the month.
Swimmable
Sea temperatures average 27°C, which can work for swimming but may feel fresh.
Map
Weather map
Compare Honolulu, Hawaii, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September30°C average high
September is one of Honolulu's warmest months, with daytime heat above the yearly average.
Warmest monthsJune to October
This stretch sets the upper range for average daytime heat.
Rain
September89mm average rain
September is one of Honolulu's driest months, making outdoor days easier to plan than in wetter parts of the year.
Driest monthsJune and August to September
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September9 hours average sun
September is brighter than Honolulu's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsMay to September
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
September27°C average sea
September is one of Honolulu's warmest sea months, when swimming comfort is usually strongest.
Warmest seaJune to November
Sea temperatures are usually near 26°C in this stretch, so swimming comfort is at its strongest.
Weather score
September77 weather score
September scores above Honolulu's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsApril to October
These months have the strongest weather score in the monthly averages.
Hotels in Honolulu, Hawaii, United States
Marriott
View all
The Royal Hawaiian, a Luxury Collection Resort, WaikikiHonolulu, Hawaii, USA
Waikiki Beach Marriott Resort & SpaHonolulu, Hawaii, USA
Renaissance Honolulu Hotel & SpaHonolulu, Hawaii, USA
Moana Surfrider, A Westin Resort & Spa, Waikiki BeachHonolulu, Hawaii, USA
Sheraton Princess Kaiulani Waikiki BeachHonolulu, Hawaii, USA
Sheraton Waikiki Beach ResortHonolulu, Hawaii, USA