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Weather in September in Honolulu, Oahu

Hawaii flag
< September >
 
Normal Max/ High Temperature 31°C (89°F)
 
Average Temperature 27°C (81°F)
 
Min/ Low Temperature 23°C (74°F)
Average Sea or Water Temp 27°C(81°F)
 
Normal Precipitation 20mm (0.8in)
Number of Wet Days (probability of rain on a day) 9 (30%)
Average Sunlight per day 09:01
Average Daylight per day 12:14
Sunny (Cloudy) Daylight Hours 75% (25%)
Sun altitude at solar noon on the 21st day.
69°


  • The average sea tempeature is 27 °C (80.6 °F).
  • The average temperature in Honolulu, Oahu in September is hot at 27.2 °C (80.96 °F).
  • Afternoons can be very hot with average high temperatures reaching 31.4 °C (88.5 °F).
  • Overnight temperatures are generally fairly hot with an average low of 23.1 °C (73.6 °F).
  • The average diurnal temperature variation/ range in September is 8.3 °C (14.9 °F).
  • The weather in September is droughty with some rain. A paltry 19.8mm (0.8in) of liquid descends during on average 9 days.
  • In September the heavens above Honolulu, Oahu are sunny having on balance a sizable 9:01 of bright sunlight per day.
  • The shortest day is 11:56 long and the longest day is 12:32 long with an average length of 12:14.
  • There are approximately 3:04 per day when bright sunshine is absent due to cloud, haze or the sun being too low on the horizon to register.
  • It is sunny approximately 74.6% of daylight hours and cloudy 25.4% of daylight hours.

Check the distance to and compare the Honolulu, Oahu September averages with somewhere beginning with:

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Weather Trend Graph for September in Honolulu, Oahu, Hawaii

Graph of weather in Honolulu, Oahu in September

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