Kihei, HI weather in August
In August, Kihei sees highs around 90°F and lows around 72°F: hot and humid, with some rain. Expect about 7 wet days.
- Normal high
- 90°F
- Normal low
- 72°F
- Wet days
- 7
- 0.5 in total
- Muggy days
- 28
- dew point 65°F+
How August changes from start to finish
| August 1 | August 31 | |
|---|---|---|
| Normal high | 90°F | 90°F |
| Normal low | 72°F | 72°F |
| Chance of a wet day | 24% | 22% |
| Sunrise / sunset | 6:00 am / 7:04 pm | 6:09 am / 6:42 pm |
| Daylight | 13.1 h | 12.6 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Hawaii time (no daylight saving)).
A typical August day
- 6 am74°Fdew point 67°F
- 9 am82°Fdew point 69°F
- Noon86°Fdew point 68°F
- 3 pm86°Fdew point 68°F
- 6 pm81°Fdew point 68°F
- 9 pm77°Fdew point 68°F
NOAA hourly normals (local standard time) from Kahului Airport (10 mi away); average wind 14 mph; clear or few clouds in 39% of daytime hours, mostly cloudy or overcast in 16%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F0 of 31
- Beach dayshigh 80-95°F, under 0.05 in of rain, afternoon wind under 15 mph2 of 31
- Hot dayshigh 90°F or more9 of 31
- Muggy daysdaily mean dew point 65°F or more28 of 31
- Wet daysat least 0.01 in of rain or melted snow7 of 31
- Notable rainat least 0.10 in1 of 31
- Freezing nightslow 32°F or below0 of 31
Average days per August, counted from daily records for each year 1991-2020.
Rain in August
Normal precipitation is 0.5 in; a dry August brings about 0.2 in and a wet one about 0.6 in (25th and 75th percentiles). Days with half an inch or more are rare.
How August varies from year to year
- Warmest August, 1991-20202020: average high 92°F
- Coolest August1999: average high 87°F
- Wettest August2018: 2.4 in
- Driest August2002: no measurable precipitation
- Highest reading97°F (August 22, 2015)
- Lowest reading60°F (August 15, 2019)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
August compared with July and September
| July | August | September | |
|---|---|---|---|
| Normal high | 89°F | 90°F | 90°F |
| Normal low | 72°F | 72°F | 71°F |
| Wet days | 8 | 7 | 5 |
| Comfortable days | 0 | 0 | 0 |
| Daylight | 13.3 h | 12.8 h | 12.3 h |
Highs change by +1°F from July and 0°F into September.
Nearby alternatives in August
- Cooler: Hilo, HI114 mi · high 83°F · 27 wet days
How Kihei ranks in August
- Normal high133rd warmest of 378 cities; 1st of 7 in Hawaii
- Wet days144th driest of 378
- Comfortable days302nd most of 341
What to pack for Kihei in August
- Light, breathable clothing – highs near 90°F and about 28 muggy days
Heating and cooling
August has 0 heating degree days and 499 cooling degree days (base 65°F), 11% of the year's total heating and cooling demand.
Questions
How hot is Kihei in August?
The normal high is 90°F and the normal low is 72°F. From 1991 to 2020 the hottest August reading was 97°F (most recently on August 22, 2015).
Does it rain a lot in Kihei in August?
About 7 days in August have at least 0.01 in of precipitation, and the normal total is 0.5 in. The wettest August in 1991-2020 was in 2018 (2.4 in); the driest was in 2002, with no measurable precipitation.
Is August a good time to visit Kihei?
August ranks 8th of 12 months on our comfort score for Kihei (48 out of 100). It has almost no comfortable days and about 9 days at 90°F or hotter. The best months are February, May and June.
Where the numbers come from
- Temperature, rain, frost dates, humidity and wind by hour and cloud cover: Kahului Airport (USW00022516), 10 mi N of the city center, 51 ft . NOAA normals and daily records, 1991-2020.
- Snowfall and snow depth: Kihei 311 (USC00514489), 2.6 mi NNE of the city center, 158 ft (147 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Kahului Airport (911900-22516), 9.3 mi N of the city center, 46 ft . Hourly observations, 1991-2020.