Koloa in september: average Weather, Temperature and Climate
Weather in Koloa in september 2025
The weather in Koloa in september comes from statistical datas on the past years. You can view the weather statistics for the whole month, but also by using the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
good weather UV index: 7
Weather at 6am
79°F
Moderate rain at times
46% of time
34%
15%
5%
Weather at 12pm
83°F
Clear/Sunny
43% of time
34%
19%
5%
Weather at 6pm
79°F
Partly Cloudy
43% of time
29%
24%
4%
Weather at 3am
79°F
52%
30%
14%
4%
Evolution of daily average temperature and precipitation in Koloa in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Koloa in september.
The climate of Koloa in september is good
In september in Koloa, the climate is wet (with 3.3in of rainfall over 4 days). It should be noted an improvement from the previous month since in august it receives an average of 4in of precipitation over 5 days.
The climate quite comfortable here september. The thermometer averaged maximum of 83°F. On average, the recorded minimum temperature is 79°F. Thus, the mean temperature average on this month of september in Koloa is 81°F. These temperatures are far removed from those records observed in Koloa in the month of september with a maximum record of 86°F in 2015 and a minimum record of 74°F in 2021. You can expect to have about 0 days with temperatures over 86°F, or 0 of time.
In september in Koloa, the days on average last 12:15. Sunrise is at 06:25 and sunset is at 18:40.
With a good weather, the month of september is a good time to go there in Hawaii.
Seasonal average climate and temperature of Koloa in september
Check below seasonal norms These statistics are set from the weather statements of the last years of the month of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 81°F | ||||
| Highest temperature | 83°F | ||||
| Lowest temperature | 79°F | ||||
| Highest record temperature | 86°F (2015) | ||||
| Lowest record temperature | 74°F (2021) | ||||
| 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 | 3.3in | ||||
| Number of days with rainfall | 4 day(s) (15%) | ||||
| Record daily rainfall | 1in (2016) | ||||
| Other climate data | |||||
| Humidity | 78% | ||||
| Visibility | 9.67km | ||||
| Cloud cover | 38% | ||||
| UV index | 7 | ||||
| Daily sunshine hours | 11 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 06:25 | ||||
| Time of sunset | 18:40 | ||||
| Length of day | 12:15 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | good | ||||
How was the weather last september?
Here is the day by day recorded weather in Koloa in september 2024:
77°F to 81°F
77°F to 81°F
77°F to 81°F
76°F to 79°F
76°F to 81°F
77°F to 81°F
77°F to 79°F
76°F to 79°F
76°F to 79°F
76°F to 79°F
76°F to 79°F
77°F to 81°F
77°F to 81°F
77°F to 81°F
77°F to 81°F
77°F to 83°F
79°F to 81°F
77°F to 81°F
77°F to 81°F
77°F to 79°F
76°F to 79°F
76°F to 79°F
76°F to 79°F
76°F to 79°F
77°F to 81°F
77°F to 79°F
76°F to 79°F
76°F to 81°F
76°F to 81°F
76°F to 81°F
Map: other cities in Hawaii in september
Cities near Koloa:
| Kalaheo in september | good weather |
| Lihue in september | good weather |
| Waimea in september | perfect weather |
| Kekaha in september | perfect weather |
| Kauai (Garden Isle) in september | good weather |
| Anahola in september | good weather |
| Kilauea in september | good weather |
| Niihau in september | perfect weather |
| Waianae in september | perfect weather |
| Waialua in september | good weather |
| Hale'iwa in september | good weather |
| Schofield Barracks in september | good weather |
Click over cities on the map for information about the weather in september.
Koloa
perfect weather
good
tolerable
bad
very bad
Weather data for Koloa in september:
Weather data for Koloa for september are derived from an average of the weather forecast since 2009 in Koloa. There is a margin of error and these forecasts are to be considered as general information only. The weather in Koloa 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 Koloa.