Kauai in September
Weather, crowds, and prices, and whether September is your month.
Summer water, autumn calm: a favorite month. Expect highs around 86°F, occasional showers, moderate, and good value.
The bigger picture for Kauai
- Best overall: April-May and September-October; summer for north-shore swimming.
- Best value: May and October.
- Watch out for: Winter (November-March) closes north-shore swimming and brings the most rain.
See the complete best-time-to-visit guide for Kauai →
What a Kauai trip costs in September
A 7-night Kauai trip for two in September runs about $4,350, covering flights, lodging, and food. That makes September the cheapest month of the year to visit, the year climbs to about $6,350 at December's peak.
See the full Kauai cost breakdown →Kauai month by month
| Month | High/Low | Rain | Crowds | Prices |
|---|---|---|---|---|
| January | 78/62° | Rainy season | Busy | Peak prices |
| February | 78/61° | Regular showers | Busy | Peak prices |
| March | 79/63° | Regular showers | Busy | Peak prices |
| April | 81/65° | Occasional showers | Busy | Above average |
| May | 83/67° | Occasional showers | Moderate | Good value |
| June | 85/69° | Very little rain | Busy | Above average |
| July | 86/71° | Very little rain | Peak crowds | Peak prices |
| August | 87/71° | Very little rain | Peak crowds | Above average |
| September ← | 86/70° | Occasional showers | Moderate | Good value |
| October | 84/68° | Occasional showers | Moderate | Good value |
| November | 81/66° | Regular showers | Moderate | Good value |
| December | 78/63° | Rainy season | Peak crowds | Peak prices |
Planning a September trip?
Browse the Kauai guides: the full destination profile, all-inclusive resorts, family trips, and honeymoons, or skip the research entirely.
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