Honolulu in August
In August, Honolulu averages 31°C (88°F) during the day and 23°C (73°F) at night, with around 8 days of rain (15 mm total).
ShoulderConditions are warm and beach-friendly. Occasional showers are likely but won't dominate.
It's peak hurricane season in Honolulu during August. Travel is possible but expect storm risk, possible flight disruption, and generally lower travel insurance coverage.
How August compares to the rest of the year in Honolulu
August is one of the warmest months in Honolulu (2nd of 12) and moderately rainy compared to the rest of the year (9th of 12). Daytime temperature runs 2°C above the annual average (29°C). August runs roughly the same as July (31°C) and stays flat into September.
August sunrise & sunset in Honolulu
Times shown for Honolulu local time (Pacific/Honolulu), calculated for the 15th of August. They shift by a few minutes day to day across the month.
Photography light in Honolulu — August
Golden-hour and blue-hour windows for the 15th of August, in Honolulu's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Honolulu in August
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on August's tier (Shoulder) and Honolulu's popularity.
Crowds & pricing — August in Honolulu
Honolulu is in a shoulder season month — fewer crowds, slightly lower prices, and a calmer atmosphere than peak weeks. Most major sights stay open with normal hours, though a handful of seasonal restaurants or boat trips may run reduced schedules. Many regulars consider these months the best time to visit because you trade a small amount of weather reliability for a much more pleasant on-the-ground experience.
Why this tier: Northern Hemisphere summer holidays beach-season conditions peak hazard season (2 active)
Sun & mosquito risk — August in Honolulu
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Sea temperature in Honolulu — August
Across the year Honolulu's sea swings from 24.4°C (March) to 27°C (September) — August sits at 26.5°C.
Honolulu in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 27°C / 81°F | 18°C / 64°F | 75 mm | 9 | — |
| February | 27°C / 81°F | 19°C / 66°F | 55 mm | 8 | — |
| March | 27°C / 81°F | 19°C / 66°F | 45 mm | 8 | — |
| April | 28°C / 82°F | 20°C / 68°F | 20 mm | 8 | — |
| May | 29°C / 84°F | 21°C / 70°F | 20 mm | 6 | — |
| June | 30°C / 86°F | 22°C / 72°F | 10 mm | 7 | — |
| July | 31°C / 88°F | 23°C / 73°F | 10 mm | 8 | — |
| August | 31°C / 88°F | 23°C / 73°F | 15 mm | 8 | — |
| September | 31°C / 88°F | 23°C / 73°F | 15 mm | 8 | — |
| October | 30°C / 86°F | 22°C / 72°F | 55 mm | 9 | — |
| November | 29°C / 84°F | 21°C / 70°F | 75 mm | 10 | — |
| December | 28°C / 82°F | 20°C / 68°F | 85 mm | 10 | — |
Other cities with similar August weather
🌍 See the full ranked list of climate twins for Honolulu in August →
Frequently asked questions
How hot is Honolulu in August?
In August, Honolulu averages a high of 31°C (88°F) and a low of 23°C (73°F) — generally hot.
Does it rain a lot in Honolulu in August?
August sees occasional rain in Honolulu, with about 8 rainy days on average.
Is August a good time to visit Honolulu?
August is hot. It suits travelers who are comfortable with hot weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Honolulu in August?
Pack lightweight, breathable clothing, sunglasses and sunscreen. See the full August packing list for Honolulu for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.