Hawaii County Surf Forecast for October 18, 2021
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 | 1-3 | 1-3 | 2-4 | 2-4 |
| Weather | Sunny until 12 PM, then partly sunny. Isolated showers. |
|---|---|
| High Temperature | In the mid 80s. |
| Winds | Southwest winds around 5 mph. |
| Sunrise | 6:20 AM HST. |
| Sunset | 5:58 PM HST. |
| Weather | Sunny until 12 PM, then partly sunny. Isolated showers. |
|---|---|
| High Temperature | In the mid 80s. |
| Winds | Southwest winds around 5 mph. |
| Sunrise | 6:20 AM HST. |
| Sunset | 5:58 PM HST. |
Swell Summary
Surf along the east facing shores will be lowering a little each day for the next couple of days as the trade wind weakens. A series of north-northwest to north swells will arrive this week, with the first of three due in today. This small pulse will be reinforced by a slightly larger north- northwest swell Tuesday night through Wednesday. On Thursday night and Friday, a larger north swell arrives, where surf is likely to reach advisory level for the north facing shores. Surf along the south facing shores will remain small into next week, although a long 14 to 15 second period swell is due in tonight through Wednesday.
NORTH EAST
am 
pm 
Surf: Knee high E short period wind swell in the morning builds in the afternoon with occasional sets up to waist high.
Conditions: Sideshore texture/chop with SE winds 5-10mph in the morning shifting ESE 10-15mph in the afternoon.
NORTH WEST
am 
pm
Surf: Minimal (ankle high or less) surf.
Conditions: Glassy in the early morning with E winds less than 5mph. Bumpy/semi bumpy conditions move in during the morning hours with the winds shifting W 5-10mph.
WEST
am 
pm
Surf: Minimal (ankle high or less) surf.
Conditions: Light sideshore texture in the morning with SSE winds 5-10mph. Bumpy/semi bumpy conditions for the afternoon with the winds shifting to the WNW. Glassy conditions are expected for the late day with SW winds less than 5mph.
SOUTH EAST
am pm
Surf: Knee high ESE 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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