Honolulu (Oahu) in september: average Weather, Temperature and Climate
Weather in Honolulu (Oahu) in september 2025
The weather in Oahu (Honolulu) in september comes from statistical datas on the past years. You can view the weather statistics for the whole month, but also navigating through the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
perfect weather UV index: 7
Weather at 6am
79°F
Partly Cloudy
48% of time
26%
20%
7%
Weather at 12pm
83°F
Clear/Sunny
56% of time
22%
20%
3%
Weather at 6pm
77°F
Moderate rain at times
37% of time
30%
29%
4%
Weather at 3am
77°F
45%
27%
21%
7%
Evolution of daily average temperature and precipitation in Honolulu (Oahu) in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Honolulu (Oahu) in september.
The climate of Honolulu (Oahu) in september is perfect
The weather in september in Oahu (Honolulu) is relatively dry (with 2.6in of rainfall over 3 days). The weather is better from the previous month since in august it receives an average of 2.5in of precipitation over 3 days.
The climate quite comfortable in this city this month. Temperatures are up to 83°F. In the morning the temperature drops to 79°F. Thus, the mean temperature average on this month of september in Oahu (Honolulu) is 81°F. Note that seasonal normals in contrast with those observed in Oahu (Honolulu) in september with a maximum record of 88°F in 2014 and a minimum record of 76°F in 2010. You can plan to have about 3 days with temperatures up to 86°F, or 10 of time.
Day length in Oahu (Honolulu) in september is 12:16. Sunrise is at 06:18 and sunset is at 18:34.
With a good weather, the month of september is advisable to go in this city in Hawaii.
Seasonal average climate and temperature of Honolulu (Oahu) in september
Check below seasonal norms These datas are generated from the weather statements earlier years of the month of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 81°F | ||||
| Highest temperature | 83°F | ||||
| Lowest temperature | 79°F | ||||
| Highest record temperature | 88°F (2014) | ||||
| Lowest record temperature | 76°F (2010) | ||||
| Number of days at +86°F | 3 day(s) (10%) | ||||
| Number of days at +65°F | 30 day(s) (100%) | ||||
| Sea temperature | |||||
| Average sea temperature | 81°F | ||||
| Lowest sea temperature | 79°F | ||||
| Highest sea temperature | 83°F | ||||
| Wind | |||||
| Wind speed | 21km/h | ||||
| Wind temperature | 79°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 2.6in | ||||
| Number of days with rainfall | 3 day(s) (11%) | ||||
| Record daily rainfall | 1.6in (2018) | ||||
| Other climate data | |||||
| Humidity | 77% | ||||
| Visibility | 9.75km | ||||
| Cloud cover | 33% | ||||
| UV index | 7 | ||||
| Daily sunshine hours | 12 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 06:18 | ||||
| Time of sunset | 18:34 | ||||
| Length of day | 12:16 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | perfect | ||||
How was the weather last september?
Here is the day by day recorded weather in Honolulu (Oahu) in september 2024:
77°F to 83°F
77°F to 83°F
76°F to 83°F
77°F to 83°F
77°F to 83°F
76°F to 81°F
76°F to 83°F
74°F to 83°F
74°F to 83°F
74°F to 83°F
74°F to 83°F
76°F to 85°F
76°F to 83°F
76°F to 83°F
76°F to 83°F
77°F to 85°F
77°F to 83°F
76°F to 83°F
76°F to 81°F
77°F to 81°F
76°F to 83°F
74°F to 81°F
74°F to 83°F
77°F to 81°F
77°F to 81°F
76°F to 83°F
76°F to 83°F
77°F to 83°F
74°F to 83°F
76°F to 83°F
Map: other cities in Hawaii in september
Cities near Honolulu (Oahu):
| 'Aiea in september | perfect weather |
| Kaneohe in september | perfect weather |
| Waimanalo in september | perfect weather |
| 'Ewa Beach in september | perfect weather |
| Pearl City in september | good weather |
| Kailua in september | perfect weather |
| Waipahu in september | good weather |
| Kapolei in september | perfect weather |
| Mililani Town in september | good weather |
| Wahiawa in september | good weather |
| Schofield Barracks in september | good weather |
| Hau'ula in september | good weather |
Click over cities on the map for information about the weather in september.
Honolulu (Oahu)
perfect weather
good
tolerable
bad
very bad
Weather data for Honolulu (Oahu) in september:
Weather data for Honolulu (Oahu) for september are derived from an average of the weather forecast since 2009 in Honolulu (Oahu). There is a margin of error and these forecasts are to be considered as general information only. The weather in Honolulu (Oahu) can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Honolulu (Oahu).