Kahului weather in August: Kahului, Hawaii: normal highs, lows, rain and records for August
Kahului in August has a normal high of 90°F and a normal low of 72°F, a daily mean of 81°F, holding near 90°F all month. Measurable precipitation falls on 7 days in a normal August, 0.53 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 32°C and low of 22°C, 13 mm of precipitation in August.
- NOAA stationKahului Airport
- Station IDUSW00022516
- Location20.90°N 156.43°W
- Elevation51 ft (16 m)
- From the center3 miles
- Population (census place)27,068
- Jan 82° 64°
- Feb 82° 64°
- Mar 83° 65°
- Apr 85° 67°
- May 87° 68°
- Jun 88° 70°
- Jul 89° 72°
- Aug 90° 72°
- Sep 90° 71°
- Oct 89° 70°
- Nov 86° 68°
- Dec 83° 66°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Kahului in August?
The normal high is 90°F and the normal low 72°F, for a daily mean of 81.1°F. August is 0.6°F warmer than July and 0.5°F warmer than September. August is the warmest month of the year in Kahului and the 9th wettest. From one year to the next August's mean temperature typically moves about 0.9°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 80°F and 82°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 25%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 90°F | 72°F | 25% | 5% |
| August 8 | 90°F | 73°F | 24% | 5% |
| August 15 | 90°F | 72°F | 24% | 4% |
| August 22 | 90°F | 72°F | 23% | 4% |
| August 31 | 90°F | 72°F | 21% | 4% |
Every day of August: normal high, low and chance of precipitation (warmest afternoon August 26, coldest night August 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| August 1 | 90°F | 72°F | 25% | 5% | 13 h 10 min |
| August 2 | 90°F | 72°F | 25% | 5% | 13 h |
| August 3 | 90°F | 72°F | 25% | 5% | 13 h |
| August 4 | 90°F | 73°F | 24% | 5% | 13 h |
| August 5 | 90°F | 73°F | 24% | 5% | 13 h |
| August 6 | 90°F | 73°F | 24% | 5% | 13 h |
| August 7 | 90°F | 73°F | 24% | 5% | 13 h |
| August 8 | 90°F | 73°F | 24% | 5% | 13 h |
| August 9 | 90°F | 73°F | 24% | 5% | 13 h |
| August 10 | 90°F | 73°F | 24% | 5% | 13 h |
| August 11 | 90°F | 73°F | 24% | 5% | 13 h |
| August 12 | 90°F | 73°F | 24% | 4% | 13 h |
| August 13 | 90°F | 73°F | 24% | 4% | 12 h 50 min |
| August 14 | 90°F | 73°F | 24% | 4% | 12 h 50 min |
| August 15 | 90°F | 72°F | 24% | 4% | 12 h 50 min |
| August 16 | 90°F | 72°F | 24% | 4% | 12 h 50 min |
| August 17 | 90°F | 72°F | 24% | 4% | 12 h 50 min |
| August 18 | 90°F | 72°F | 23% | 4% | 12 h 50 min |
| August 19 | 90°F | 72°F | 23% | 4% | 12 h 50 min |
| August 20 | 90°F | 72°F | 23% | 4% | 12 h 50 min |
| August 21 | 90°F | 72°F | 23% | 4% | 12 h 50 min |
| August 22 | 90°F | 72°F | 23% | 4% | 12 h 40 min |
| August 23 | 90°F | 72°F | 23% | 4% | 12 h 40 min |
| August 24 | 90°F | 72°F | 23% | 4% | 12 h 40 min |
| August 25 | 90°F | 72°F | 22% | 4% | 12 h 40 min |
| August 26 | 90°F | 72°F | 22% | 4% | 12 h 40 min |
| August 27 | 90°F | 72°F | 22% | 4% | 12 h 40 min |
| August 28 | 90°F | 72°F | 22% | 4% | 12 h 40 min |
| August 29 | 90°F | 72°F | 21% | 4% | 12 h 40 min |
| August 30 | 90°F | 72°F | 21% | 4% | 12 h 40 min |
| August 31 | 90°F | 72°F | 21% | 4% | 12 h 30 min |
- Normal high
- 90°FAugust average
- Normal low
- 72°FAugust average
- Precipitation
- 0.53 inmonth total
- Days with precipitation
- 70.01 inch or more
- Days at 90°F or more
- 9
- Daylight
- 13 h 10 min to 12 h 30 minAugust 1 to August 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 31
- Sunshine
- 88%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00022516; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Kahului in August?
On a given August day the chance of 0.01 inch or more is 23% on average, highest around August 1 (25%). In all, 0.53 in falls on 7 days of a normal August.
In a normal August in Kahului, 9 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00022516.
How humid and windy is Kahului in August?
At 3 p.m. the normal temperature is 86°F with 56% relative humidity and a dew point of 68°F; at 6 a.m. it is 73°F with 81% humidity. The wind averages 13.6 mph, most often from the 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. | 73°F | 67°F | 81% | 8.4 mph | 59% |
| 9 a.m. | 82°F | 68°F | 64% | 13.6 mph | 50% |
| noon | 86°F | 68°F | 55% | 19.8 mph | 38% |
| 3 p.m. | 86°F | 68°F | 56% | 20.8 mph | 35% |
| 6 p.m. | 81°F | 68°F | 66% | 16.6 mph | 34% |
| 9 p.m. | 77°F | 68°F | 75% | 11.5 mph | 59% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00022516. 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 August in Kahului?
The warmest August temperature on Kahului's official record (since 1954) is 97°F, on August 31, 1994; the coldest is 60°F, on August 15, 2019. The wettest August brought 2.35 in (2018).
The August mean against the 1991-2020 normal of 81.1°F: 2021 79.3°F (−1.8), 2022 82.3°F (+1.2), 2023 80.7°F (−0.4), 2024 77.8°F (−3.3), 2026 80.5°F (−0.5). 1 of 5 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 79.3°F | −1.8°F | 0.66 in |
| 2022 | 82.3°F | +1.2°F | 0.06 in |
| 2023 | 80.7°F | −0.4°F | 0.19 in |
| 2024 | 77.8°F | −3.3°F | 1.62 in |
| 2026 | 80.5°F | −0.5°F | 1.47 in |
Source: records: ACIS, NWS threaded record OGGthr; recent months: ACIS, station USW00022516. Records and recent months use complete months only.
How does August in Kahului compare across Hawaii?
Across the 18 places PlainClimate covers in Hawaii, August normal highs run from 76°F in Kula to 90°F in Kahului; Kahului's is 90°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.