Weather: Honolulu — September
The weather is near-perfect with ideal temperatures and minimal rain. Recommended month to visit.
🌟 Climate Overview
September is an excellent time to visit Honolulu. Hot conditions with temperatures reaching 30°C—stay hydrated and seek shade. Rainfall is rare, so you can leave the umbrella at home. As peak season, expect higher prices and more tourists. Sea temperature of 27°C is perfect for swimming.
Based on weather comfort, crowds, prices, and activity options
30°C
24°C
3days
12.3h
Feels like 33°C / 27°C — humidity makes it feel warmer
12mm
11.2h/day
71%
Muggy9.4
Very High20 km/h (gusts 43)
27°C 🏊 Comfortable
Is September a good time to visit Honolulu?
The weather is near-perfect with ideal temperatures and minimal rain.
Now
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Air Quality
Travel Context
- CrowdsVery Busy
- Travel Costs Value Rates
Daylight
06:19
18:37
Visiting Honolulu in September: Pros & Cons
Pros
- Minimal rainfall — great for outdoor plans
- Abundant sunshine for beach and outdoor fun
- Warm sea perfect for swimming and snorkeling
- One of the best months to visit
Cons
- Peak season — expect crowds and higher prices
- Very high UV — sunscreen and shade essential
Things to Do in September
Events & Festivals
Recommended for This Weather
Honolulu Weather by Month
| Month | Avg High | Avg Low | Rain | Sunshine | Humidity | UV Index | Crowds | Condition |
|---|---|---|---|---|---|---|---|---|
| Jan | 27°C | 21°C | 10d (41mm) | 9.6h | 77% Humid | 6.3 High | | Good |
| Feb | 26°C | 21°C | 9d (40mm) | 10.2h | 73% Humid | 7.5 Very High | | Good |
| Mar | 26°C | 21°C | 13d (52mm) | 10.7h | 75% Humid | 8.6 Very High | | Wet |
| Apr | 27°C | 22°C | 14d (47mm) | 11.4h | 74% Humid | 9.5 Very High | | Excellent |
| May | 28°C | 23°C | 10d (42mm) | 12h | 72% Humid | 10.2 Extreme | | Excellent |
| Jun | 29°C | 24°C | 6d (17mm) | 12.5h | 70% Muggy | 10.4 Extreme | | Good |
| Jul | 30°C | 24°C | 7d (22mm) | 12.4h | 72% Muggy | 10.1 Extreme | | Good |
| Aug | 30°C | 24°C | 5d (18mm) | 11.9h | 71% Muggy | 10 Very High | | Good |
| Sep Current | 30°C | 24°C | 3d (12mm) | 11.2h | 71% Muggy | 9.4 Very High | | Excellent |
| Oct | 29°C | 24°C | 7d (27mm) | 10.6h | 73% Muggy | 8 Very High | | Excellent |
| Nov | 28°C | 23°C | 7d (26mm) | 10h | 74% Humid | 6.7 High | | Good |
| Dec | 27°C | 22°C | 8d (62mm) | 9.4h | 77% Humid | 5.8 High | | Good |
Honolulu
Waikiki Beach with Waikiki Beach and Diamond Head hike,Pearl Harbor, volcanic crater hikes, and aloha spirit.
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What to Pack for September
Light, breathable fabrics like cotton and linen are essential. Opt for loose-fitting clothing in light colors to stay cool. Don't forget a wide-brimmed hat and high-SPF sunscreen — the sun is strong.
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Frequently Asked Questions
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Daily costs, money-saving tips, and budget breakdown
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Complete travel guide for Honolulu: top things to do, itineraries, and typical costs.