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Waimea Rivermouth Surf Forecast
/ HAW – Kaua'i (25 breaks) / Hawaii (267 breaks) /
Surf Forecasts:
Waimea Rivermouth surfForecast / HAW – Kaua'i / USA
48hr Weather and Surf, issued 1 am Wednesday 18 Feb 2026 HSTForecast update in hr min s Forecast update imminent
Waimea Rivermouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Waimea Rivermouth sea temperature is
24.5° C
(Which is slightly warmer than usual)How big are the waves at Waimea Rivermouth today?
The current surf forecast for Waimea Rivermouth at 10AM is: 1.2m 8s primary swell from a Southeast direction (forecast issued at 01:00am February 18). An open ocean swell of 1.0m 10s is not directed at the surf break, a second open ocean swell of 0.4m 12s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Feb) | 3.5ft (1.1m) | 8s |
| Afternoon (18 Feb) | 4.5ft (1.3m) | 8s |
| Evening (18 Feb) | 6.5ft (2.0m) | 9s |
Table - waves today at Waimea Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 18 | Thursday 19 | Friday 20 | ||||||||||||||||||||||
| 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 | 11 AM | 2 PM | 5 PM | 8 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 7 | 7 | 7 | 8 | 8 | 8 | 9 | 9 | 9 | 8 | 9 | 9 | 8 | 8 | 7 | 7 | 7 | 9 | 9 | 9 | 7 | 7 | 9 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 52 | 77 | 89 | 125 | 181 | 181 | 1007 | 679 | 854 | 143 | 1099 | 1124 | 128 | 125 | 93 | 96 | 79 | 999 | 747 | 670 | 47 | 36 | 495 | 541 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross- off | cross- off |
High Tide / height (m) | 4:36AM 0.47 | 4:50PM 0.28 | 5:01AM 0.42 | 5:37PM 0.32 | 5:24AM 0.37 | 6:31PM 0.35 | ||||||||||||||||||
Low Tide / height (m) | 9:50PM -0.05 | 11:11AM 0.00 | 10:33PM -0.01 | 11:33AM -0.02 | 11:21PM 0.05 | 11:58AM -0.03 | ||||||||||||||||||
Wednesday 18 | Thursday 19 | Friday 20 | ||||||||||||||||||||||
| Sunrise | - | - | - | 7:07 | - | - | - | - | - | - | - | 7:07 | - | - | - | - | - | - | - | 7:05 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:37 | - | - | - | - | - | - | - | 6:37 | - | - | - | - | - | - | - | 6:37 | - |
 |  | |  | |  | | | | | | | | |  |  | | | |  |  | | |  | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 1 | 1 | 2 | 3 |
| Temp. °C | 22 | 21 | 21 | 22 | 23 | 23 | 23 | 22 | 22 | 22 | 21 | 22 | 23 | 24 | 23 | 22 | 21 | 21 | 21 | 22 | 23 | 23 | 23 | 22 |
| Feels °C (?) | 19 | 18 | 18 | 19 | 19 | 19 | 19 | 19 | 20 | 19 | 18 | 20 | 20 | 21 | 20 | 19 | 18 | 18 | 20 | 21 | 22 | 22 | 23 | 23 |
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