Visit Honolulu in September? Score 8.6/10 [2026]

Month summary

Honolulu weather in September

✅ Good

🌡️ Temperature min / max

24°C – 29°C

🌧 Rainy days

23% of days

☀️ Sunshine

11.6h per day on average

🌊 🌊 Season

Autumn

⭐ ⭐ Weather score

8.6/10

📅 📅 Best month

June (9.1/10)

Quick decision

Should you visit Honolulu in September?

✅ Good

✅ Yes if: you want good weather with lower prices than peak season.

❌ No if: you need guaranteed perfect weather — some mixed days are possible.

🌧 Rain : ██░░░░░░░░ 23%

🌡 Temperature : ███████░░░ 29°C

☀️ Sunshine : ████████░░ 11.6h/d

Our take: September in Honolulu is practically perfect—warm days averaging 24–29°C with minimal rain mean you can beach hop freely. You'll get solid sunshine (11.6 hours daily) and a toasty 27°C ocean, ideal for swimmers and water lovers who hate cold sea temps. This is genuinely one of the best months to visit if you're flexible with travel timing.

By trip type

Honolulu in September by trip type

🏙️ 🏙️ City break / culture : ✅ Good
🚶 🚶 Outdoor activities : ✅ Good
🏖️ Beach / swimming : ✅ Good
💰 💰 Budget : 💸 Peak season

Local context

What to expect in September

🎯 Peak cultural season — museums and sites accessible in good weather conditions Autumn in Honolulu is often underrated: 29°C, golden light and declining crowds. An interesting window. Rain risk remains low (23% of days), leaving good room for outdoor activities. A good balance between weather and crowds, even if June (9.1/10) remains theoretically better.

Browse by month

All months for Honolulu

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Annual table

Month-by-month comparison

Month	Min °C	Max °C	Rain %	Precip mm	Sun h/d	Score
☀️ January	20°C	25°C	24%	1.4	10.7h	8.2/10
🌤️ February	20°C	25°C	31%	1.8	10.9h	8.1/10
🌤️ March	20°C	25°C	35%	1.8	11.4h	8.0/10
🌤️ April	21°C	26°C	39%	1.7	12.2h	8.2/10
🌤️ May	22°C	27°C	34%	1.4	13.0h	8.6/10
☀️ June	23°C	28°C	24%	0.9	13.0h	9.1/10
☀️ July	23°C	29°C	23%	0.7	12.9h	8.9/10
🌤️ August	24°C	29°C	25%	0.9	12.7h	8.7/10
☀️ September	24°C	29°C	23%	0.8	11.6h	8.6/10
🌤️ October	23°C	28°C	31%	1.3	11.0h	8.5/10
☀️ November	22°C	27°C	22%	0.8	10.7h	8.6/10
🌤️ December	21°C	26°C	26%	2.0	10.7h	8.2/10

Ideal Fair Challenging climate ◀ Current month · Source Open-Meteo · 10 years

📊 Data source Data based on 10 years of ERA5 records via Open-Meteo, with ECMWF seasonal adjustment. In September, Honolulu averages 29°C, 23% rainy days and 11.6h of sunshine per day. Overall weather score: 8.6/10. See methodology →

Comparison