Marine forecast
Big Island Windward, HI
- current wind
- 4 kt NNE
- Gusts
- 6 kt
- Seas
- 6.9 ft
- Period
- 7 sec
- Air
- 80°F
Observed Tue 8:54 AM | PHZ122
- Gusts now
- 6 kt
- Seas now
- 6.9 ft · 7 sec
- Air
- 80°F
- 72-hr peak
- 13 kt
- Peak seas
- 6 ft
In brief
At 8:54 am HST on Oct 13, 2026, NDBC station ILOH1 (Hilo, HI, 10 miles away) measured wind from the NNE at 4 kt, gusting to 6 kt; buoy 51206 measured seas of 6.9 ft. The NWS forecast for Big Island Windward, HI issued at 3:22 am HST on Oct 13, 2026 reads, for today: “East winds 15 to 20 knots, easing to 10 to 15 knots this afternoon. Seas 5 to 6 feet.”
Source: National Weather Service Honolulu HI forecast; NDBC observations
Wind forecast · ktPeak 13 kt
Seas forecast · ftPeak 6 ft
NWS marine forecast
| Period | Forecast |
|---|---|
| Today | East winds 15 to 20 knots, easing to 10 to 15 knots this afternoon. Seas 5 to 6 feet. Wave Detail: East 4 feet at 7 seconds, south 4 feet at 14 seconds and north northwest 4 feet at 15 seconds. Isolated showers. |
| Tonight | East winds 10 to 15 knots. Seas 4 to 6 feet. Wave Detail: South 4 feet at 13 seconds, north northwest 4 feet at 14 seconds and east 3 feet at 7 seconds. Isolated showers. |
| Wednesday | East winds 10 to 15 knots. Seas 4 to 6 feet. Wave Detail: South 4 feet at 12 seconds and north northwest 4 feet at 13 seconds. Scattered showers. |
| Wednesday Night | East winds 10 to 15 knots. Seas 4 to 6 feet. Wave Detail: North northwest 4 feet at 12 seconds and south 4 feet at 20 seconds. Scattered showers. |
| Thursday | East northeast winds 10 to 15 knots. Seas 4 to 6 feet. Wave Detail: South 4 feet at 18 seconds, east 3 feet at 4 seconds and north northwest 3 feet at 12 seconds. Scattered showers. |
| Thursday Night | East northeast winds 10 to 15 knots. Seas 4 to 6 feet. Wave Detail: East 4 feet at 5 seconds, south 4 feet at 17 seconds and north northwest 3 feet at 11 seconds. Scattered showers. |
| Friday | East northeast winds 15 to 20 knots. Seas 6 to 8 feet. Wave Detail: East 5 feet at 6 seconds, north 5 feet at 13 seconds and south 4 feet at 16 seconds. Scattered showers. |
| Saturday | East northeast winds 15 to 20 knots. Seas 6 to 8 feet. Wave Detail: East 5 feet at 6 seconds, north northwest 5 feet at 11 seconds and south 3 feet at 14 seconds. Scattered showers. |
Issued Tue 3:22 AM by Honolulu HI (product CWFHFO).
Synopsis
Trades will be gentle to moderate through Wednesday. Surface high pressure is expected to build north of the state Thursday through this weekend and allow winds to become fresh to locally strong.
Recent buoy conditions
| Time | Wind | Gust | Seas | Water |
|---|---|---|---|---|
| Tue 8:54 AM | 4 kt NNE | 6 kt | — | — |
| Tue 7:54 AM | 0 kt | 1 kt | — | — |
| Tue 6:54 AM | 2 kt SW | 4 kt | — | — |
| Tue 5:54 AM | 2 kt SSW | 4 kt | — | — |
| Tue 4:54 AM | 4 kt S | 5 kt | — | — |
| Tue 3:54 AM | 1 kt SW | 2 kt | — | — |
| Tue 2:54 AM | 1 kt SSW | 2 kt | — | — |
| Tue 1:54 AM | 1 kt WSW | 2 kt | — | — |
| Tue 12:54 AM | 2 kt SSW | 4 kt | — | — |
| Mon 11:54 PM | 1 kt WSW | 3 kt | — | — |
| Mon 10:54 PM | 3 kt W | 5 kt | — | — |
| Mon 9:54 PM | 1 kt SW | 9 kt | — | — |
Observed Tue 8:54 AM at NDBC buoy ILOH1 (Hilo, HI), 10.2 miles away. Seas from buoy 51206 (Hilo, Hawaii, HI (188)), 7.0 miles away, at Tue 8:56 AM.
Frequently asked questions
What is the marine forecast for Big Island Windward today?
Today: East winds 15 to 20 knots, easing to 10 to 15 knots this afternoon. Seas 5 to 6 feet. Wave Detail: East 4 feet at 7 seconds, south 4 feet at 14 seconds and north northwest 4 feet at 15 seconds. Isolated showers.
Is there a small craft advisory for Big Island Windward?
No advisories, warnings or watches are in effect for NWS zone PHZ122 as of the last update on this page. Advisories can be issued at any time; check the current bulletin before leaving the dock.
How high are the waves at Big Island Windward right now?
Seas are running 6.9 ft at a 7-second period, measured at NDBC buoy ILOH1 Tue 8:54 AM, 10.2 miles from this zone. The forecast peaks at 6.0 ft Fri 8 AM.
What do the wind speeds in knots mean?
One knot is 1.15 mph. The National Weather Service issues a small craft advisory for sustained winds of roughly 22–33 knots or hazardous seas, a gale warning at 34–47 knots, and a storm warning at 48 knots and above. Exact advisory thresholds vary by forecast office and by water body — a bay reaches dangerous chop at a lower wind speed than open ocean.
Where does this forecast come from?
The forecast text is the National Weather Service's own marine bulletin for zone PHZ122, issued by Honolulu HI, reproduced in full. The wind and seas charts are drawn from the NWS gridded forecast for a point inside the zone. Observations come from the nearest reporting NDBC buoy. We are not affiliated with NOAA or the National Weather Service.
Forecast: NOAA/NWS product CWFHFO, issued Tue 3:22 AM. Observations: NOAA National Data Buoy Center station ILOH1, read Tue 8:54 AM. Retrieved Oct 13, 9:42 AM. Conditions offshore change faster than any page can be rebuilt, so check the current NWS bulletin and your own instruments before going out.