Kauai
United States
The Garden Isle thrives with dramatic sea cliffs, deep green canyons, and unrestrained tropical growth.
Warmest month is August at 30°C on average. Coolest is January at 26°C. Driest reading falls in January with 5 rain days.
Six lead datapoints
- CoffeeWorld Bank PPP baseline$4.50 (~$4.50)PPP price tier 4 / 4
- $6.00 (~$6.00)PPP price tier 4 / 4
- Flight timeMethodology15h 30m from London HeathrowGreat-circle plus routing overhead.
- Flight CO2eDEFRA 2024 factors4,421 kg return from London HeathrowDEFRA 2024 economy factors, includes radiative forcing.
- FCDO advisorygov.uk, snapshot compiled 2026-07-11No specific FCDO warnings against travel.Check the latest FCDO advice before booking.
- Tap waterCDC / WHO guidanceTap water is generally safe to drink.
| Month | Avg high | Swing | Rain days |
|---|---|---|---|
| January | 26° | ±1° | 5 |
| February | 26° | ±2° | 8 |
| March | 26° | ±2° | 9 |
| April | 27° | ±1° | 8 |
| May | 28° | ±1° | 7 |
| June | 28° | ±2° | 6 |
| July | 29° | ±1° | 7 |
| August | 30° | ±1° | 7 |
| September | 30° | ±1° | 6 |
| October | 29° | ±1° | 8 |
| November | 28° | ±1° | 9 |
| December | 26° | ±2° | 9 |
What to do
- Hike the Kalalau Trail on the Na Pali Coast
- Take a helicopter tour of Waimea Canyon
- Kayak the Wailua River to hidden waterfalls
How we know this
Values are the average of the last ten calendar years of daily readings from Visual Crossing, snapped to the destination cluster. Swing is the p10 to p90 range of daily highs, halved for the ± figure. Rain days count any day with at least 1 mm of precipitation.