Kaneohe weather in September: Kaneohe, Hawaii: normal highs, lows, rain and records for September
Kaneohe in September has a normal high of 84°F and a normal low of 76°F, a daily mean of 80°F, holding near 84°F all month. Measurable precipitation falls on 13 days in a normal September, 1.50 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 29°C and low of 24°C, 38 mm of precipitation in September.
- NOAA stationKaneohe Bay Marine Corps Air Station
- Station IDUSW00022519
- Location21.45°N 157.78°W
- Elevation10 ft (3 m)
- Population (census place)35,945
- Jan 79° 68°
- Feb 78° 69°
- Mar 78° 69°
- Apr 80° 71°
- May 81° 72°
- Jun 82° 74°
- Jul 83° 75°
- Aug 84° 75°
- Sep 84° 76°
- Oct 83° 75°
- Nov 81° 73°
- Dec 79° 70°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Kaneohe in September?
The normal high is 84°F and the normal low 76°F, for a daily mean of 79.9°F. September is 0.1°F warmer than August and 0.8°F warmer than October. September is the warmest month of the year in Kaneohe and the 8th wettest. From one year to the next September's mean temperature typically moves about 0.7°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 79°F and 81°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 44%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 84°F | 75°F | 43% | 12% |
| September 8 | 84°F | 76°F | 44% | 12% |
| September 15 | 84°F | 76°F | 44% | 12% |
| September 22 | 84°F | 76°F | 44% | 13% |
| September 30 | 84°F | 76°F | 44% | 14% |
Every day of September: normal high, low and chance of precipitation (warmest afternoon September 1, coldest night September 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| September 1 | 84°F | 75°F | 43% | 12% | 12 h 30 min |
| September 2 | 84°F | 75°F | 43% | 12% | 12 h 30 min |
| September 3 | 84°F | 75°F | 43% | 12% | 12 h 30 min |
| September 4 | 84°F | 76°F | 43% | 12% | 12 h 30 min |
| September 5 | 84°F | 76°F | 43% | 12% | 12 h 30 min |
| September 6 | 84°F | 76°F | 44% | 12% | 12 h 30 min |
| September 7 | 84°F | 76°F | 44% | 12% | 12 h 30 min |
| September 8 | 84°F | 76°F | 44% | 12% | 12 h 30 min |
| September 9 | 84°F | 76°F | 44% | 12% | 12 h 20 min |
| September 10 | 84°F | 76°F | 44% | 12% | 12 h 20 min |
| September 11 | 84°F | 76°F | 44% | 12% | 12 h 20 min |
| September 12 | 84°F | 76°F | 44% | 12% | 12 h 20 min |
| September 13 | 84°F | 76°F | 44% | 12% | 12 h 20 min |
| September 14 | 84°F | 76°F | 44% | 12% | 12 h 20 min |
| September 15 | 84°F | 76°F | 44% | 12% | 12 h 20 min |
| September 16 | 84°F | 76°F | 44% | 12% | 12 h 20 min |
| September 17 | 84°F | 76°F | 44% | 13% | 12 h 20 min |
| September 18 | 84°F | 76°F | 44% | 13% | 12 h 10 min |
| September 19 | 84°F | 76°F | 44% | 13% | 12 h 10 min |
| September 20 | 84°F | 76°F | 44% | 13% | 12 h 10 min |
| September 21 | 84°F | 76°F | 44% | 13% | 12 h 10 min |
| September 22 | 84°F | 76°F | 44% | 13% | 12 h 10 min |
| September 23 | 84°F | 76°F | 44% | 13% | 12 h 10 min |
| September 24 | 84°F | 76°F | 44% | 13% | 12 h 10 min |
| September 25 | 84°F | 76°F | 44% | 13% | 12 h 10 min |
| September 26 | 84°F | 76°F | 44% | 13% | 12 h |
| September 27 | 84°F | 76°F | 44% | 13% | 12 h |
| September 28 | 84°F | 76°F | 44% | 13% | 12 h |
| September 29 | 84°F | 76°F | 44% | 13% | 12 h |
| September 30 | 84°F | 76°F | 44% | 14% | 12 h |
- Normal high
- 84°FSeptember average
- Normal low
- 76°FSeptember average
- Precipitation
- 1.50 inmonth total
- Days with precipitation
- 130.01 inch or more
- Days at 90°F or more
- 1
- Daylight
- 12 h 30 min to 12 hSeptember 1 to September 30
- Days at 70°F or more
- 30
- Days at 80°F or more
- 30
- Sunshine
- 88%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00022519; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Kaneohe in September?
On a given September day the chance of 0.01 inch or more is 44% on average, highest around September 19 (44%). In all, 1.50 in falls on 13 days of a normal September.
In a normal September in Kaneohe, 1 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00022519.
How humid and windy is Kaneohe in September?
At 3 p.m. the normal temperature is 82°F with 66% relative humidity and a dew point of 70°F; at 6 a.m. it is 77°F with 78% humidity. The wind averages 7.7 mph, most often from the east-northeast in the afternoon. A dew point of 65°F or more feels muggy to most people.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 77°F | 69°F | 78% | 6.0 mph | 25% |
| 9 a.m. | 80°F | 70°F | 71% | 8.0 mph | 26% |
| noon | 83°F | 70°F | 66% | 10.1 mph | 28% |
| 3 p.m. | 82°F | 70°F | 66% | 9.7 mph | – |
| 6 p.m. | 80°F | 70°F | 71% | 8.2 mph | 23% |
| 9 p.m. | 79°F | 70°F | 75% | 7.3 mph | 28% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00022519. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for September in Kaneohe?
The warmest September temperature on this station's record (since 1942) is 91°F, on September 4, 1974; the coldest is 66°F, on September 28, 1996. The wettest September brought 4.91 in (1992).
The September mean against the 1991-2020 normal of 79.9°F: 2021 78.3°F (−1.6), 2022 80.7°F (+0.8), 2023 84.0°F (+4.1), 2026 80.2°F (+0.3). 3 of 4 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 78.3°F | −1.6°F | 1.67 in |
| 2022 | 80.7°F | +0.8°F | 1.43 in |
| 2023 | 84.0°F | +4.1°F | 1.21 in |
| 2026 | 80.2°F | +0.3°F | – |
Source: records: ACIS, station USW00022519; recent months: ACIS, station USW00022519. Records and recent months use complete months only.
How does September in Kaneohe compare across Hawaii?
Across the 18 places PlainClimate covers in Hawaii, September normal highs run from 75°F in Kula to 90°F in Kahului; Kaneohe's is 84°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.