Hawaii County Surf Forecast for September 18, 2023
Forecast for Big Island Windward and Southeast
| Shores | Today | Tuesday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| AM | PM | AM | PM | |
| North Facing | 0-2 | 0-2 | 0-2 | 0-2 |
| East Facing | 2-4 | 2-4 | 2-4 | 2-4 |
| South Facing | 4-6 | 3-5 | 2-4 | 2-4 |
| Weather | Mostly cloudy. Scattered showers. | |||||
|---|---|---|---|---|---|---|
| High Temperature | In the mid 80s. | |||||
| Winds | Northeast winds 5 to 10 mph. | |||||
|
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| Sunrise | 6:08 AM HST. | |||||
| Sunset | 6:21 PM HST. | |||||
| Weather | Mostly cloudy. Numerous showers. | |||||
|---|---|---|---|---|---|---|
| Low Temperature | In the lower 70s. | |||||
| Winds | Northeast winds around 5 mph, becoming west after midnight. |
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|
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| Weather | Partly sunny. Scattered showers. | |||||
|---|---|---|---|---|---|---|
| High Temperature | In the mid 80s. | |||||
| Winds | Northeast winds around 10 mph. | |||||
|
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| Sunrise | 6:08 AM HST. | |||||
| Sunset | 6:20 PM HST. | |||||
Forecast for Big Island Leeward
| Shores | Today | Tuesday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| AM | PM | AM | PM | |
| West Facing | 1-3 | 1-3 | 1-3 | 1-3 |
| South Facing | 3-5 | 2-4 | 2-4 | 2-4 |
| Weather | Partly sunny. Scattered showers. |
|---|---|
| High Temperature | In the mid 80s. |
| Winds | Southeast winds around 5 mph, becoming southwest in the afternoon. |
| Sunrise | 6:12 AM HST. |
| Sunset | 6:25 PM HST. |
| Weather | Partly sunny. Scattered showers. |
|---|---|
| High Temperature | In the mid 80s. |
| Winds | Southwest winds around 5 mph. |
| Sunrise | 6:12 AM HST. |
| Sunset | 6:24 PM HST. |
Swell Summary
A small, medium to long period south (170-180 degree) swell will slowly decrease today and Tuesday. Another long period background south swell will arrive late Tuesday through Wednesday, boosting surf heights slightly along south facing shores. Persistent moderate trade winds will keep small east chop into next week. No significant swells are expected to reach north and west facing shores for the next seven days.
NORTH EAST
am 
pm
Surf: Knee to thigh high NE short period wind swell with occasional waist high sets.
Conditions: Sideshore texture/chop with SE winds 10-15mph in the morning shifting ESE 15-20mph in the afternoon.
NORTH WEST
am 
pm 
Surf: Minimal (ankle high or less) surf.
Conditions: Semi clean/textured in the morning with S winds 5-10mph. Choppy/sideshore current conditions for the afternoon with the winds shifting SW 15-20mph.
WEST
am pm
Surf: Minimal (ankle high or less) surf.
Conditions: Semi glassy/semi bumpy with S winds 5-10mph in the morning shifting W less than 5mph in the afternoon.
SOUTH EAST
am pm
Surf: Ankle high E short period wind swell in the morning builds in the afternoon with occasional sets up to waist high.
Conditions: Semi choppy with ENE winds 5-10mph in the morning increasing to 10-15mph in the afternoon.
Data Courtesy of NOAA.gov and SwellInfo.com
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