United States Honolulu Weather in August — Climate Guide
August in Honolulu is very-high
Honolulu Weather in August — Quick Answer
As of 2026- Avg temp
- 31° / 24°
- Rainfall
- 15mm · 4 days
- Crowds
- Very busy
As of 2026, Honolulu in August averages a high of 31°C and low of 24°C with 15mm of rain over about 4 days. Hottest tropical. UV 12 protection mandatory. Hurricane-season alertness — pack rain jacket for the rare tropical storm.
August is very-high for Honolulu.
August is the absolute Honolulu peak — Korean summer school break + US summer school peak + tropical heat all align. Hotels at year-maximum across every category.
Duke's OceanFest (mid-August) is the Waikiki-Beach watersports festival honoring Duke Kahanamoku — surf competitions, paddleboard races, free public viewing all week. The most photogenic surf-culture week in Honolulu.
Travel score
Honolulu August Weather Stats
Avg High
31°C
Avg Low
24°C
Rainy Days
4
15mm total
Sunshine
11h
Daily avg
Humidity
65%
moderate
UV Index
12
Extreme
Wind
14 km/h
Gusts 30
Sea Temp
27°C
swimming
Crowds
Very busy
At attractions
August Sunrise & Sunset
Air Quality
PM2.5
6 μg/m³
PM10
15 μg/m³
Status
good
Feels-Like Temperature & Wind
Feels like
Daytime
33°C
Nighttime
25°C
Humidity and wind affect how the actual temperature feels.
Wind
14 km/h
Max gust 30 km/h
Activities Recommended for August
August Travel Pros & Cons
Pros
- Korean summer break overlap
- Duke's OceanFest surf festival
- Calm sea at peak
Cons
- Hottest 31°C + UV 12 burn risk
- Hurricane peak season starts
- Year-maximum hotel pricing
August Events & Festivals
- Korean summer school break peak (mid-August)
- Statehood Day (3rd Friday August)
- Duke's OceanFest (mid-August)
- Hurricane peak season begins
Honolulu in August — Full Picture
August is the absolute Honolulu peak — Korean summer school break + US summer school peak + tropical heat all align. Hotels at year-maximum across every category.
Duke's OceanFest (mid-August) is the Waikiki-Beach watersports festival honoring Duke Kahanamoku — surf competitions, paddleboard races, free public viewing all week. The most photogenic surf-culture week in Honolulu.
Hurricane peak season starts — official Central Pacific hurricane season runs June 1 to November 30, but the peak threat window for Hawaii is August-September. Most years pass without direct landfall, but Hurricane Iniki (1992 Kauai) and Hurricane Lane (2018) demonstrate the real risk. Travel insurance with hurricane cancellation coverage strongly recommended for August-September visits.
Korean summer school break (mid-August through Korean Independence Day August 15) drives the year's biggest Korean tourist surge alongside February's Lunar New Year. Korean Air and Asiana add additional Seoul-Honolulu flights.
The smart August move: target the last week (post-Korean break, pre-Labor Day) for the brief drop in demand. Or accept the peak pricing for the Duke's OceanFest spectacle.
What to Wear & What to Pack
Hottest tropical. UV 12 protection mandatory. Hurricane-season alertness — pack rain jacket for the rare tropical storm.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
27.7°C
21°C
6/mo
Summer (Jun·Jul·Aug)
Current30°C
23.7°C
3.7/mo
Autumn (Sep·Oct·Nov)
29.7°C
23°C
7/mo
Winter (Dec·Jan·Feb)
27°C
20.3°C
10.3/mo
Honolulu Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 27° | 20° | 11d·100mm | 7h | 70% | 8 | Very busy | Peak | |
| February (Best) | 27° | 20° | 9d·80mm | 8h | 68% | 9 | Very busy | Peak |
| March (Best) | 27° | 20° | 7d·60mm | 8h | 67% | 9 | Busy | Shoulder |
| April (Best) | 28° | 21° | 6d·30mm | 9h | 65% | 10 | Busy | Shoulder |
| May (Best) | 28° | 22° | 5d·30mm | 10h | 65% | 11 | Very busy | Peak |
| June (Best) | 29° | 23° | 4d·15mm | 11h | 63% | 11 | Very busy | Peak |
| July (Best) | 30° | 24° | 3d·10mm | 11h | 65% | 12 | Very busy | Peak |
| August (Best) | 31° | 24° | 4d·15mm | 11h | 65% | 12 | Very busy | Peak |
| September (Best) | 30° | 24° | 5d·25mm | 10h | 65% | 11 | Busy | Shoulder |
| October (Best) | 30° | 23° | 7d·50mm | 9h | 67% | 9 | Moderate | Shoulder |
| November (Best) | 29° | 22° | 9d·80mm | 8h | 70% | 8 | Moderate | Shoulder |
| 27° | 21° | 11d·100mm | 7h | 70% | 7 | Very busy | Peak |
View Other Months
Honolulu August Hotel Picks
Frequently Asked Questions
Is August a good time to visit Honolulu?
Honolulu in August is very-high. Tourist crowds are very busy and flight/hotel prices are peak.
What's the average temperature in Honolulu in August?
Honolulu August averages a high of 31°C and a low of 24°C.
Does it rain much in Honolulu in August?
Honolulu August averages 15mm of rainfall over about 4 rainy days.
What should I wear in Honolulu in August?
Hottest tropical. UV 12 protection mandatory. Hurricane-season alertness — pack rain jacket for the rare tropical storm.
What time are sunrise and sunset in Honolulu in August?
Honolulu August sunrise is 06:10 and sunset is 18:55, with 12h 45m of daylight.
What's the air quality like in Honolulu in August?
Honolulu August air quality (AQI) averages 25, rated Good. PM2.5 averages 6μg/m³.
What activities are recommended in Honolulu in August?
In August, Honolulu is great for Waikiki + Duke's OceanFest, Pearl Harbor, Polynesian Cultural Center.
Is August peak season in Honolulu?
Honolulu August crowds are very busy and prices are peak. Advance reservations are strongly recommended.
Best Months to Visit Honolulu
View Other Months
Planning a August trip to Honolulu?
You've checked the weather — next come the budget and the route.
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.