Lihue weather in September: Lihue, Hawaii: normal highs, lows, rain and records for September
Lihue in September has a normal high of 85°F and a normal low of 75°F, a daily mean of 80°F, holding near 85°F all month. Measurable precipitation falls on 16 days in a normal September, 2.18 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 30°C and low of 24°C, 55 mm of precipitation in September.
- NOAA stationLihue Weather Office Airport 1020.1
- Station IDUSW00022536
- Location21.98°N 159.34°W
- Elevation100 ft (31 m)
- Population (census place)7,847
- Jan 79° 66°
- Feb 78° 66°
- Mar 79° 67°
- Apr 80° 70°
- May 82° 71°
- Jun 83° 73°
- Jul 85° 75°
- Aug 85° 75°
- Sep 85° 75°
- Oct 84° 74°
- Nov 81° 71°
- Dec 79° 69°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Lihue in September?
The normal high is 85°F and the normal low 75°F, for a daily mean of 80.0°F. September is 0.2°F cooler than August and 1.3°F warmer than October. September is the 2nd warmest month of the year in Lihue and the 8th wettest. From one year to the next September's mean temperature typically moves about 1.2°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 56%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 85°F | 75°F | 56% | 17% |
| September 8 | 85°F | 75°F | 55% | 17% |
| September 15 | 85°F | 75°F | 54% | 17% |
| September 22 | 85°F | 75°F | 53% | 17% |
| September 30 | 85°F | 75°F | 53% | 17% |
Every day of September: normal high, low and chance of precipitation (warmest afternoon September 3, coldest night September 28)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| September 1 | 85°F | 75°F | 56% | 17% | 12 h 40 min |
| September 2 | 85°F | 75°F | 56% | 17% | 12 h 30 min |
| September 3 | 85°F | 75°F | 56% | 17% | 12 h 30 min |
| September 4 | 85°F | 75°F | 56% | 17% | 12 h 30 min |
| September 5 | 85°F | 75°F | 55% | 17% | 12 h 30 min |
| September 6 | 85°F | 75°F | 55% | 17% | 12 h 30 min |
| September 7 | 85°F | 75°F | 55% | 17% | 12 h 30 min |
| September 8 | 85°F | 75°F | 55% | 17% | 12 h 30 min |
| September 9 | 85°F | 75°F | 55% | 17% | 12 h 30 min |
| September 10 | 85°F | 75°F | 55% | 17% | 12 h 20 min |
| September 11 | 85°F | 75°F | 55% | 17% | 12 h 20 min |
| September 12 | 85°F | 75°F | 55% | 17% | 12 h 20 min |
| September 13 | 85°F | 75°F | 54% | 17% | 12 h 20 min |
| September 14 | 85°F | 75°F | 54% | 17% | 12 h 20 min |
| September 15 | 85°F | 75°F | 54% | 17% | 12 h 20 min |
| September 16 | 85°F | 75°F | 54% | 17% | 12 h 20 min |
| September 17 | 85°F | 75°F | 54% | 17% | 12 h 20 min |
| September 18 | 85°F | 75°F | 54% | 17% | 12 h 10 min |
| September 19 | 85°F | 75°F | 54% | 17% | 12 h 10 min |
| September 20 | 85°F | 75°F | 54% | 17% | 12 h 10 min |
| September 21 | 85°F | 75°F | 54% | 17% | 12 h 10 min |
| September 22 | 85°F | 75°F | 53% | 17% | 12 h 10 min |
| September 23 | 85°F | 75°F | 53% | 17% | 12 h 10 min |
| September 24 | 85°F | 75°F | 53% | 17% | 12 h 10 min |
| September 25 | 85°F | 75°F | 53% | 17% | 12 h 10 min |
| September 26 | 85°F | 75°F | 53% | 17% | 12 h |
| September 27 | 85°F | 75°F | 53% | 17% | 12 h |
| September 28 | 85°F | 75°F | 53% | 17% | 12 h |
| September 29 | 85°F | 75°F | 53% | 17% | 12 h |
| September 30 | 85°F | 75°F | 53% | 17% | 12 h |
- Normal high
- 85°FSeptember average
- Normal low
- 75°FSeptember average
- Precipitation
- 2.18 inmonth total
- Days with precipitation
- 160.01 inch or more
- Daylight
- 12 h 40 min to 12 hSeptember 1 to September 30
- Days at 70°F or more
- 30
- Days at 80°F or more
- 30
- Sunshine
- 91%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00022536; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Lihue in September?
On a given September day the chance of 0.01 inch or more is 54% on average, highest around September 1 (56%). In all, 2.18 in falls on 16 days of a normal September.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00022536.
How humid and windy is Lihue in September?
At 3 p.m. the normal temperature is 83°F with 66% relative humidity and a dew point of 70°F; at 6 a.m. it is 76°F with 81% humidity. The wind averages 12.3 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. | 76°F | 69°F | 81% | 11.1 mph | 36% |
| 9 a.m. | 80°F | 70°F | 71% | 11.9 mph | 40% |
| noon | 83°F | 70°F | 66% | 13.4 mph | 49% |
| 3 p.m. | 83°F | 70°F | 66% | 13.5 mph | 46% |
| 6 p.m. | 79°F | 70°F | 73% | 12.7 mph | 36% |
| 9 p.m. | 78°F | 70°F | 77% | 12.5 mph | 33% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00022536. 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 Lihue?
The warmest September temperature on Lihue's official record (since 1950) is 91°F, on September 8, 2019; the coldest is 65°F, on September 29, 1952. The wettest September brought 10.87 in (1980).
The September mean against the 1991-2020 normal of 80.0°F: 2021 79.6°F (−0.4), 2022 79.5°F (−0.5), 2023 79.8°F (−0.2), 2024 80.4°F (+0.4), 2025 80.1°F (+0.1), 2026 79.9°F (−0.1). 2 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 79.6°F | −0.4°F | 1.96 in |
| 2022 | 79.5°F | −0.5°F | 0.65 in |
| 2023 | 79.8°F | −0.2°F | 0.92 in |
| 2024 | 80.4°F | +0.4°F | 0.64 in |
| 2025 | 80.1°F | +0.1°F | 3.63 in |
| 2026 | 79.9°F | −0.1°F | 5.59 in |
Source: records: ACIS, NWS threaded record LIHthr; recent months: ACIS, station USW00022536. Records and recent months use complete months only.
How does September in Lihue 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; Lihue's is 85°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.