Hawaii County Surf Forecast for September 30, 2023
Forecast for Big Island Windward and Southeast
| Shores | Today | Sunday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| AM | PM | AM | PM | |
| North Facing | 1-3 | 1-3 | 1-3 | 1-3 |
| East Facing | 3-5 | 3-5 | 3-5 | 2-4 |
| South Facing | 4-6 | 4-6 | 4-6 | 3-5 |
| Weather | Partly sunny. Scattered showers. | |||||
|---|---|---|---|---|---|---|
| High Temperature | In the mid 80s. | |||||
| Winds | East winds 5 to 10 mph. | |||||
|
||||||
| Sunrise | 6:11 AM HST. | |||||
| Sunset | 6:10 PM HST. | |||||
| Weather | Mostly cloudy. Scattered showers. | |||||
|---|---|---|---|---|---|---|
| Low Temperature | In the lower 70s. | |||||
| Winds | Northeast winds around 10 mph. | |||||
|
||||||
| Weather | Mostly cloudy. Scattered showers. | |||||
|---|---|---|---|---|---|---|
| High Temperature | In the mid 80s. | |||||
| Winds | Northeast winds 5 to 10 mph. | |||||
|
||||||
| Sunrise | 6:11 AM HST. | |||||
| Sunset | 6:09 PM HST. | |||||
Forecast for Big Island Leeward
| Shores | Today | Sunday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| AM | PM | AM | PM | |
| West Facing | 1-3 | 1-3 | 1-3 | 1-3 |
| South Facing | 2-4 | 2-4 | 2-4 | 2-4 |
| Weather | Mostly sunny until 12 PM, then mostly cloudy. Isolated showers and thunderstorms. |
|---|---|
| High Temperature | In the upper 80s. |
| Winds | Southeast winds around 5 mph, becoming west in the afternoon. |
| Sunrise | 6:15 AM HST. |
| Sunset | 6:14 PM HST. |
Swell Summary
A pair of northern Pacific systems moving south of the Aleutian Islands and into the Gulf of Alaska the next several days will produce a couple of north to northwest swells that will reach the islands Sunday and fill in Monday and then again Tuesday into Wednesday. This will result in heightened north and west-facing shore surf well into next week. The first near four foot, medium period northwest swell is timed to fill in during the day on Sunday. This swell should peak Sunday night and Monday surf to or above head high and then slowly fall through Tuesday. A slightly larger, medium period more northwest-turning-north swell is expected to reach the islands and fill in from late Tuesday through early Thursday. This swell will reinforce these head to over head high surf heights from mid to late week.
East-facing short period wind wave chop will significantly fall next week as east trades disappear and light or gentle breezes become the new wind regime. South-facing shore surf will remain around waist high through early next week. There may be a slight bump in southeast low period swell, mixed into weekend background south swell, that originated from a small fetch region far southeast of the island chain. This may lift surf from chest to near head high along more southeastern exposures from Sunday into mid week.
NORTH EAST
am 
pm
Surf: Waist to stomach high ENE short period wind swell.
Conditions: Choppy/sideshore current with SE winds 15-20mph in the morning shifting ESE for the afternoon.
NORTH WEST
am 
pm 
Surf: Minimal (ankle high or less) surf.
Conditions: Glassy in the morning with S winds less than 5mph. Bumpy/semi bumpy conditions for the afternoon with the winds shifting W 5-10mph.
WEST
am 
pm
Surf: Minimal (ankle high or less) surf.
Conditions: Semi glassy in the morning with SSE winds less than 5mph. Bumpy/semi bumpy conditions for the afternoon with the winds shifting WNW 5-10mph.
SOUTH EAST
am 
pm
Surf: Knee to waist high E short period wind swell in the morning builds to waist to stomach high for the afternoon.
Conditions: Fairly clean in the morning with N winds 5-10mph. Sideshore texture/chop conditions for the afternoon with the winds shifting to the NE.
Data Courtesy of NOAA.gov and SwellInfo.com
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