Station 51213 - Kaumalapau Southwest, Lanai, HI (239)
March 20, 2026 6:56 pm HASTLocation: 20.75N 157.002W
Significant Wave Height: 5.6 ft
Dominant Wave Period: 6 sec
Average Period: 5.5 sec
Mean Wave Direction: S (179°)
Water Temperature: 76.8°F (24.9°C)
Overnight - 73°F
Mar 21, 2026
14 mph S
Showers And Thunderstorms
Showers and thunderstorms. Some of the storms could produce heavy rain. Cloudy, with a low around 73. South wind around 14 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
Saturday - 77°F
Mar 21, 2026
3 to 13 mph SW
Showers And Thunderstorms
Showers and thunderstorms. Some of the storms could produce heavy rain. Cloudy, with a high near 77. Southwest wind 3 to 13 mph. Chance of precipitation is 100%. New rainfall amounts between 2 and 3 inches possible.
Saturday Night - 70°F
Mar 22, 2026
6 to 12 mph SSW
Showers And Thunderstorms
Showers and thunderstorms. Some of the storms could produce heavy rain. Cloudy, with a low around 70. South southwest wind 6 to 12 mph. Chance of precipitation is 100%. New rainfall amounts in excess of 4 inches possible.
Sunday - 75°F
Mar 22, 2026
12 mph SSW
Showers And Thunderstorms
Showers and thunderstorms. Some of the storms could produce heavy rain. Cloudy, with a high near 75. South southwest wind around 12 mph. Chance of precipitation is 90%. New rainfall amounts in excess of 4 inches possible.
Sunday Night - 70°F
Mar 23, 2026
5 to 9 mph S
Scattered Rain Showers
Scattered rain showers. Cloudy, with a low around 70. South wind 5 to 9 mph. Chance of precipitation is 40%. New rainfall amounts between 2 and 3 inches possible.
Monday - 75°F
Mar 23, 2026
5 to 15 mph NNE
Scattered Rain Showers
Scattered rain showers. Mostly cloudy, with a high near 75. North northeast wind 5 to 15 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Monday Night - 70°F
Mar 24, 2026
15 mph NE
Isolated Rain Showers then Mostly Cloudy
Isolated rain showers before 8pm. Mostly cloudy, with a low around 70. Northeast wind around 15 mph. Chance of precipitation is 20%.
Tuesday - 76°F
Mar 24, 2026
15 mph NE
Mostly Sunny
Mostly sunny, with a high near 76. Northeast wind around 15 mph, with gusts as high as 18 mph.
Tuesday Night - 71°F
Mar 25, 2026
15 mph NE
Mostly Clear
Mostly clear, with a low around 71. Northeast wind around 15 mph, with gusts as high as 18 mph.
Wednesday - 77°F
Mar 25, 2026
7 to 14 mph NE
Sunny
Sunny, with a high near 77. Northeast wind 7 to 14 mph.
Wednesday Night - 71°F
Mar 26, 2026
12 mph NE
Mostly Clear
Mostly clear, with a low around 71. Northeast wind around 12 mph.
Thursday - 77°F
Mar 26, 2026
9 mph NE
Sunny
Sunny, with a high near 77. Northeast wind around 9 mph.
Thursday Night - 71°F
Mar 27, 2026
9 mph NE
Partly Cloudy
Partly cloudy, with a low around 71. Northeast wind around 9 mph.
Friday - 77°F
Mar 27, 2026
8 to 12 mph NE
Partly Sunny
Partly sunny, with a high near 77. Northeast wind 8 to 12 mph.