Niihau in september: average Weather, Temperature and Climate
Weather in Niihau in september 2025
The weather in Niihau in the month of september comes from statistical datas on the last years. You can view the weather statistics for all the month, but also by using 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
44% of time
38%
17%
2%
Weather at 12pm
81°F
Clear/Sunny
48% of time
32%
19%
3%
Weather at 6pm
79°F
Clear/Sunny
40% of time
30%
29%
2%
Weather at 3am
79°F
42%
31%
26%
2%
Evolution of daily average temperature and precipitation in Niihau in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Niihau in september.
The climate of Niihau in september is perfect
The climate in september in Niihau is rather dry (with 1.8in of rainfall over 2 days). The weather is better from the previous month since in august it receives an average of 1.9in of precipitation over 2 days.
The climate quite enjoyable there september. Temperatures are up to 83°F. On average, the recorded minimum temperature is 79°F. Thus, the mean temperature average on this month of september in Niihau is 81°F. Note that seasonal normals in contrast with those observed in Niihau in september with a maximum record of 85°F in 2014 and a minimum record of 76°F in 2009. You can expect to have about 0 days with temperatures up to 86°F, or 0 of time.
Day length in Niihau in september is 12:15. Sunrise is at 06:28 and sunset is at 18:43.
With good weather conditions, the month of september is a good month to go in Niihau in Hawaii.
Seasonal average climate and temperature of Niihau in september
Check below seasonal norms These statistics are set from the weather statements of the past years of the month of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 81°F | ||||
| Highest temperature | 83°F | ||||
| Lowest temperature | 79°F | ||||
| Highest record temperature | 85°F (2014) | ||||
| Lowest record temperature | 76°F (2009) | ||||
| Number of days at +65°F | 30 day(s) (100%) | ||||
| Sea temperature | |||||
| Average sea temperature | 81°F | ||||
| Lowest sea temperature | 80°F | ||||
| Highest sea temperature | 82°F | ||||
| Wind | |||||
| Wind speed | 16km/h | ||||
| Wind temperature | 79°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 1.8in | ||||
| Number of days with rainfall | 2 day(s) (6%) | ||||
| Record daily rainfall | 1.1in (2019) | ||||
| Other climate data | |||||
| Humidity | 76% | ||||
| Visibility | 9.77km | ||||
| Cloud cover | 26% | ||||
| UV index | 7 | ||||
| Daily sunshine hours | 12 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 06:28 | ||||
| Time of sunset | 18:43 | ||||
| Length of day | 12:15 | ||||
| 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 Niihau 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 Niihau:
| Kekaha in september | perfect weather |
| Waimea in september | perfect weather |
| Kalaheo in september | good weather |
| Koloa in september | good weather |
| Lihue in september | good weather |
| Kilauea in september | good weather |
| Kauai (Garden Isle) in september | good weather |
| Anahola in september | good 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.
Niihau
perfect weather
good
tolerable
bad
very bad
Weather data for Niihau in september:
Weather data for Niihau for september are derived from an average of the weather forecast since 2009 in Niihau. There is a margin of error and these forecasts are to be considered as general information only. The weather in Niihau 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 Niihau.