Kauai Surf Forecast for March 09, 2023
A very large northwest swell (310-320) peaked at the upstream buoys (51001 and 51101) yesterday evening and is on the down trend. Based on the typical travel times from those buoys, the swell should be peaking early this morning locally. Due to the proximity of the source low around 600 NM north of Molokai, there are quite a mix of periods, ranging from around 10 to 18 seconds, making for very rough and messy conditions. This swell will continue to generate warning-level surf along north and west facing shores of most of the smaller islands, as well as leeward Big Island shores. Due to the lingering swell, the High Surf Warning has been extended through tonight. The combination of the northwest swell and westerly wind waves will lead to overwash of some coastal infrastructure and beach erosion today, as well. This swell will gradually subside late tonight into Friday as the parent low moves away to the northeast. A moderate, medium-period NNW (330-340) swell will move through beginning late Friday, keeping surf elevated, but below advisory level into the weekend. No other significant swells expected.