Kailua-Kona, HI weather in August
August in Kailua-Kona: warm and mostly dry. Highs 87°F, lows 76°F, about 5 wet days.
- Normal high
- 87°F
- Normal low
- 76°F
- Wet days
- 5
- 1.8 in total
- Daylight
- 12.8 h
How August changes from start to finish
| August 1 | August 31 | |
|---|---|---|
| Normal high | 87°F | 87°F |
| Normal low | 76°F | 75°F |
| Chance of a wet day | 17% | 19% |
| Sunrise / sunset | 6:00 am / 7:00 pm | 6:08 am / 6:40 pm |
| Daylight | 13.0 h | 12.5 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)).
What kind of days to expect
- Comfortable dayshigh 65-80°F (temperature only: no humidity station nearby)0 of 31
- Beach dayshigh 80-95°F, under 0.05 in of rain (temperature and rain only)27 of 31
- Hot dayshigh 90°F or more2 of 31
- Wet daysat least 0.01 in of rain or melted snow5 of 31
- Notable rainat least 0.10 in3 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 1.8 in; a dry August brings about 0.5 in and a wet one about 2.1 in (25th and 75th percentiles). About 1 day brings half an inch or more.
How August varies from year to year
- Warmest August, 1991-20202015: average high 90°F
- Coolest August2010: average high 84°F
- Wettest August2015: 9.2 in
- Driest August2003: 0.02 in
- Highest reading95°F (August 7, 2014)
- Lowest reading69°F (August 26, 2010)
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 | 86°F | 87°F | 87°F |
| Normal low | 75°F | 76°F | 75°F |
| Wet days | 5 | 5 | 6 |
| Comfortable days | 0 | 0 | 0 |
| Daylight | 13.2 h | 12.8 h | 12.3 h |
Highs change by +1°F from July and 0°F into September.
How Kailua-Kona ranks in August
- Normal high175th warmest of 378 cities; 3rd of 7 in Hawaii
- Wet days103rd driest of 378
What to pack for Kailua-Kona in August
- Light, breathable clothing – highs near 87°F
- A swimsuit – about 27 beach days
Heating and cooling
August has 0 heating degree days and 512 cooling degree days (base 65°F), 11% of the year's total heating and cooling demand.
Questions
How hot is Kailua-Kona in August?
The normal high is 87°F and the normal low is 76°F. From 1991 to 2020 the hottest August reading was 95°F (August 7, 2014).
Does it rain a lot in Kailua-Kona in August?
About 5 days in August have at least 0.01 in of precipitation, and the normal total is 1.8 in. The wettest August in 1991-2020 was in 2015 (9.2 in); the driest was in 2003 (0.02 in).
Is August a good time to visit Kailua-Kona?
August ranks 9th of 12 months on our comfort score for Kailua-Kona (50 out of 100). It has almost no comfortable days (judged by temperature only) and about 2 days at 90°F or hotter. The best months are January, February and March.
Where the numbers come from
- Temperature and frost dates: Kailua Kona Ke-Ahole Airport (USW00021510), 7.7 mi NNW of the city center, 43 ft . NOAA normals and daily records, 1991-2020.
- Rain, snowfall and snow depth: Honokohau Harbor 68.14 (USC00511880), 3.4 mi NW of the city center, 30 ft . NOAA normals and daily records, 1991-2020.
- Not available for this location: humidity and wind by hour, cloud cover and daily humidity and wind (no station close enough or similar enough in elevation).