- Forecast
- Maps
- Live
- Weather State
- Spot Information
Surf Forecasts:
Inside Poipu surfForecast / HAW – Kaua'i / USA
48hr Weather and Surf, issued 1 pm Wednesday 20 May 2026 HSTForecast update in hr min s Forecast update imminent
Inside Poipu surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Inside Poipu sea temperature is
25.2° C
(Which is normal for this time of year)How big are the waves at Inside Poipu today?
The current surf forecast for Inside Poipu at 9PM is: 1.9m 8s primary swell from a East-northeast direction and 0.5m 14s secondary swell from a South-southwest direction, 0.3m 18s secondary swell from a South-southwest direction (forecast issued at 01:00pm May 20). The wind direction is predicted to be cross-shore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 May) | 5ft (1.6m) | 8s |
| Afternoon (20 May) | 5.5ft (1.7m) | 8s |
| Evening (20 May) | 6ft (1.9m) | 8s |
Table - waves today at Inside Poipu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 3mm), mostly falling on Wed afternoon. Warm (max 25°C on Wed afternoon, min 22°C on Thu night). Mainly fresh winds. | ||||||||||||||||||||||||
Wed 20 | Thursday 21 | Friday 22 | Sat 23 | |||||||||||||||||||||
11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
E 8 | ENE 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 9 | E 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | |
341 | 392 | 418 | 464 | 562 | 692 | 727 | 727 | 727 | 744 | 809 | 866 | 970 | 1027 | 899 | 841 | 858 | 708 | 790 | 708 | 738 | 660 | 702 | 719 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | |
High Tide | 7:22PM0.73m | 7:23AM0.24m | 8:16PM0.67m | 9:27AM0.27m | 9:10PM0.61m | |||||||||||||||||||
Low Tide | 11:15AM0.07m | 3:26AM0.18m | 12:11PM0.14m | 4:16AM0.16m | 1:26PM0.22m | 4:54AM0.14m | ||||||||||||||||||
 |  |  |  | | | |  | | | |  | | | | | | | | | |  |  | | |
 | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — | — | 5:54 | — |
 | — | — | 7:10 | — | — | — | — | — | — | — | 7:12 | — | — | — | — | — | — | — | 7:12 | — | — | — | — | 7:13 |
— | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | |
Temp °C | 25 | 25 | 24 | 24 | 23 | 23 | 23 | 23 | 24 | 25 | 24 | 23 | 23 | 23 | 22 | 23 | 24 | 24 | 23 | 23 | 23 | 22 | 22 | 23 |
24 | 23 | 22 | 23 | 21 | 21 | 21 | 20 | 21 | 22 | 21 | 20 | 19 | 19 | 19 | 19 | 20 | 20 | 19 | 20 | 20 | 19 | 19 | 20 | |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | S 16 | S 16 | SSW 16 | S 16 | S 15 | S 15 | S 15 | S 15 | S 15 | S 15 | S 14 | SE 12 | S 14 | S 17 | S 16 | S 16 | S 16 |
 kJ | 165 | 174 | 152 | 105 | 104 | 101 | 69 | 134 | 134 | 87 | 127 | 115 | 157 | 157 | 110 | 155 | 109 | 103 | 68 | 93 | 147 | 132 | 185 | 127 |
Swell 2 Height (m) Direction Period (s) | SE 7 | SSW 18 | SSW 18 | S 18 | SSW 17 | SSW 17 | S 16 | SSW 13 | SSW 14 | SSW 14 | SE 13 | SE 13 | SE 13 | SE 13 | SE 13 | SE 12 | SE 9 | SE 12 | SSW 14 | S 18 | SSW 13 | SSW 13 | SSW 13 | SSW 13 |
| kJ | 14 | 62 | 62 | 56 | 101 | 93 | 137 | 70 | 61 | 66 | 44 | 43 | 43 | 42 | 40 | 38 | 21 | 67 | 62 | 97 | 60 | 59 | 60 | 58 |
Swell 3 Height (m) Direction Period (s) | SE 9 | SE 7 | SE 9 | SE 9 | SE 7 | SSE 14 | SE 14 | SE 14 | SE 14 | SE 13 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SE 10 | S 18 | S 18 | S 18 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 |
| kJ | 13 | 8 | 13 | 13 | 14 | 19 | 32 | 51 | 47 | 44 | 14 | 14 | 14 | 14 | 15 | 15 | 57 | 99 | 98 | 38 | 37 | 36 | 35 | 35 |
Wind waves Height (m) Direction Period (s) | E 8 | ENE 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 9 | E 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 |
| kJ | 341 | 392 | 418 | 464 | 562 | 692 | 727 | 727 | 727 | 744 | 809 | 866 | 970 | 1027 | 899 | 841 | 858 | 708 | 790 | 708 | 738 | 660 | 702 | 719 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 5 | 25 | 131 | 22 | 307 | 307 | 40 | 31 | 31 | 305 | 3739 | 307 | 423 | 22 | 22 | 22 | 22 | 25 | 22 | 22 | 22 | 22 | 22 | 22 |
Best forecast wave conditions in Kaua'i | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Inside Poipu surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Nearest