East Honolulu, HI weather in August
In August, East Honolulu sees highs around 85°F and lows around 74°F: warm and oppressively humid, with frequent rain. There are about 12 days with rain.
- Normal high
- 85°F
- Normal low
- 74°F
- Wet days
- 12
- 1.1 in total
- Muggy days
- 31
- dew point 65°F+
How August changes from start to finish
| August 1 | August 31 | |
|---|---|---|
| Normal high | 85°F | 85°F |
| Normal low | 74°F | 74°F |
| Chance of a wet day | 40% | 39% |
| Sunrise / sunset | 6:04 am / 7:10 pm | 6:14 am / 6:48 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 am77°Fdew point 70°F
- 9 am80°Fdew point 70°F
- Noon82°Fdew point 70°F
- 3 pm83°Fdew point 70°F
- 6 pm80°Fdew point 70°F
- 9 pm79°Fdew point 70°F
NOAA hourly normals (local standard time) from Kaneohe Bay MCAS (12 mi away); average wind 9 mph; clear or few clouds in 34% of daytime hours, mostly cloudy or overcast in 22%.
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 mph26 of 31
- Hot dayshigh 90°F or more0 of 31
- Muggy daysdaily mean dew point 65°F or more31 of 31
- Wet daysat least 0.01 in of rain or melted snow12 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 1.1 in; a dry August brings about 0.4 in and a wet one about 1.1 in (25th and 75th percentiles). Days with half an inch or more are rare.
How August varies from year to year
- Warmest August, 1991-20202019: average high 88°F
- Coolest August2018: average high 83°F
- Wettest August2004: 4.1 in
- Driest August2020: 0.1 in
- Highest reading91°F (August 29, 2006)
- Lowest reading68°F (August 26, 2006)
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 | 84°F | 85°F | 85°F |
| Normal low | 74°F | 74°F | 74°F |
| Wet days | 14 | 12 | 12 |
| 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
- Drier: Honolulu, HI9 mi · high 89°F · 6 wet days
How East Honolulu ranks in August
- Normal high210th warmest of 378 cities; 6th of 7 in Hawaii
- Wet days316th driest of 378
- Comfortable days298th most of 341
What to pack for East Honolulu in August
- Light, breathable clothing – highs near 85°F and about 31 muggy days
- A rain jacket or umbrella – rain on about 12 days
- A swimsuit – about 26 beach days
Heating and cooling
August has 0 heating degree days and 454 cooling degree days (base 65°F), 11% of the year's total heating and cooling demand.
Questions
How hot is East Honolulu in August?
The normal high is 85°F and the normal low is 74°F. From 1991 to 2020 the hottest August reading was 91°F (most recently on August 29, 2006).
Does it rain a lot in East Honolulu in August?
About 12 days in August have at least 0.01 in of precipitation, and the normal total is 1.1 in. The wettest August in 1991-2020 was in 2004 (4.1 in); the driest was in 2020 (0.2 in).
Is August a good time to visit East Honolulu?
August ranks 7th of 12 months on our comfort score for East Honolulu (53 out of 100). It has almost no comfortable days. The best months are February, May and June.
Where the numbers come from
- Temperature and frost dates: Waimanalo Exp F 795.1 (USC00519523), 3.3 mi N of the city center, 64 ft (55 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Rain, snowfall and snow depth: Paiko Drive 723.4 (USC00517540), 1.2 mi WSW of the city center, 5 ft . NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour: Kaneohe Bay MCAS (USW00022519), 12 mi NNW of the city center, 10 ft . NOAA normals and daily records, 1991-2020.
- Cloud cover: Honolulu Intl Airport (USW00022521), 14 mi W of the city center, 7 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Kaneohe MCAS (911760-22519), 12 mi NNW of the city center, 24 ft . Hourly observations, 1991-2020.