Coastal conditions

Hilo Bay

Bay · Hawaii · Hawaii Island / Hilo Bay

Active coastal or marine alerts

  • High Surf Advisory

    Severity: Minor

    High Surf Advisory issued September 4 at 3:51PM HST until September 5 at 6:00PM HST by NWS Honolulu HI

    Begins Sep 4, 2026, 3:51 PM · Ends Sep 5, 2026, 6:00 PM

    Heed all advice from ocean safety officials. When in doubt, don't go out.

    Official NWS alert

Current Coastal Rating

Poor · 42

Beta

Conditions are poor, but confidence is reduced because some coastal inputs are partial or prediction-based.

Scores are model-specific and are not directly comparable across water types.

Should I Go?

Trip conditions only. Target-species activity and seasonal fishery patterns are not yet included.

Consider

Trip conditions may be workable, but important cautions or data limitations remain.

High confidence in the evaluated inputs — observational coverage is partial. Required data sources were available and the key inputs were current.

Evaluates trip conditions using weather, tides, currents, waves, daylight, and active alerts.

  • Policy HAWAII_PATH2_PROVISIONAL_POLICY_V1. Authority OWNER_AUTHORIZED_PROVISIONAL_PRODUCT_POLICY.
  • Provisional conservative non-empirical Hawaii product-policy. Not accepted Hawaii fishing thresholds. Not PATH1. Not calibrated V1 science.
  • NWS Hawaii SCA / Gale issuance floors are safety anchors, not optimal fishing cuts.
  • Does not inherit Northeast, Mid-Atlantic, Southeast, Gulf, PSW, or PNW numerics or weights.
  • empiricalCalibratedFishingThresholds=false. hawaiiSpecificWeights=false. productionThresholdsAuthorized=false. path1Authorized=false.
  • Missing waves are not calm. Forecast is not an observation. Prediction is not an observation.
  • Offshore wind is not automatically favorable. Wind direction is required evidence with neutral initial score contribution.
  • Exposure Hawaii E WINDWARD shelter=PARTIALLY_SHIELDED.
  • Verdict capped at Consider while calibration remains incomplete. Adverse Wait / Do Not Go / Unavailable are not weakened.
  • Inner-harbor wave abstention applies only inside the accepted harbor boundary.

About this recommendation

Uses StrikeTracks coastal policy 2026-07.

Service Status

Degraded

Coastal conditions are partial, stale, or predictions-only.

Recommended window

Saturday · 6:00 AM–9:00 AM HST

Window score

62

Max wind
8 mph
Max gust
15 mph
Daylight
67% of window
Tide state
rising

Watch for

  • An active caution-level alert applies to this destination.

Coastal conditions can change quickly. Review official alerts and current conditions before heading out.

Current Readings

Updated Sep 4, 2026, 9:49 PM

NOAA Station selected

Source

  • NOAA CO-OPS
  • Hilo, Hilo Bay, Kuhio Bay station
  • 0.0 mi from destination
Water level
1.5 ft MLLW

Updated 8 min ago

Wind
SSW · 1 mph

Updated 8 min ago

Wind gust
3 mph

Updated 8 min ago

Some observation sources are temporarily unavailable.

Past 7 Days

NOAA Station selected

Water level

Window Aug 28, 2026, 9:49 PM Sep 4, 2026, 9:49 PM (rolling 168 hours)

Water level over the past 7 days. 1678 observations · from Aug 28, 2026, 9:54 PM · to Sep 4, 2026, 9:42 PM Range 0.3 ft MLLW to 2.8 ft MLLW.

Readings increased over the available period.

1678 observations · from Aug 28, 2026, 9:54 PM · to Sep 4, 2026, 9:42 PM

  • NOAA CO-OPS · Hilo, Hilo Bay, Kuhio Bay · Station 1617760
  • Station at destination
  • Approximately 0.0 mi from destination
  • Observation type: observed
  • Unit: ft
  • Datum: MLLW

Nearby coastal destinations

  • Hawaii · East Hawaii dropoff / bluewater east of Hilo Bay, not FAD E and not the breakwater · Offshore

    Approximately 8.8 miles away

  • Hawaii · Hawaii Island / Kona / Honokohau Harbor · Harbor

    Approximately 63.3 miles away

  • Hawaii · Hawaii Island lee dropoff west of Honokohau, not FAD F and not the harbor · Offshore

    Approximately 69.4 miles away

Predicted Tides

Predicted

Falling

Next low tide

Sep 5, 2026, 3:11 AM

In 5 hr 21 min

0.3 ft MLLW

Previous

High · Sep 4, 2026, 10:18 AM · 2.3 ft MLLW

Following

High · Sep 5, 2026, 11:35 AM · 2.5 ft MLLW

Tide station at destination

Hilo, Hilo Bay, Kuhio Bay · NOAA 1617760

Predicted Tidal Current

Predicted

No representative tidal-current prediction station is configured for this destination.

Tidal-current timing can differ from high and low tide timing.

Fishery Profile

Fishery Overview

Hilo Bay windward fishery

A windward Hawaii Island bay and harbor fishery pinned at Hilo Bay / Kuhio Bay. Most complete first-cohort physical stack. This is not Kona and not Waiakea Public Fishing Area. Do not transfer Hilo numerics to Kona.

Fishery type
  • Windward bay harbor
Fishing modes
  • Shore
  • Inshore boat
Habitat and structure
Hilo Bay / Kuhio Bay public harbor and windward bay · Breakwater and bay edges · Not Kona lee dropoff and not Waiakea PFA

Static seasonal guidance · Last reviewed Sep 3, 2026

Not a live bite forecast.

Fishery Targets

Harbor jacks are year-round DAR-managed targets. Pelagic overlay is occurrence-level. Seasonal Fish Season timing for mahi-mahi is not encoded on this harbor pin. Deep 7 is a legal overlay when applicable, not a Fish Season card. Exact legal seasons are not invented.

Species images are AI-generated illustrations for visual reference and may simplify natural variation. Fishery records are based on the cited agency and editorial sources. About fish illustrations

  • Giant trevally illustration

    Ulua / papio

    Primary

    Caranx ignobilis

    Also called Ulua

    No seasonal pulse known

    Hilo Bay and harbor jack fishery. DAR size/bag apply.

  • Yellowfin tuna illustration

    Yellowfin tuna (ahi)

    Secondary

    Thunnus albacares

    Also called Ahi

    No seasonal pulse known

    Windward pelagic overlay from Hilo. Not a Kona marlin identity.

  • Mahi-mahi illustration

    Mahi-mahi

    Seasonal

    Coryphaena hippurus

    Also called Dorado

    No seasonal pulse known

    Windward pelagic overlay. Occurrence is documented; destination month timing is not encoded as a legal season.

Profile guidance — exact seasonal timing is not available for every target.

Access, Safety and Regulations

Access

Public harbor at Hilo. Nonresident marine license required. Waiakea Public Fishing Area is not this pin. Deep 7 vessel registration applies if targeting Deep 7.

Primary hazards

Harbor traffic, windward swell, and rain. Do not substitute this stack for Kona.

Fishery considerations

  • Tide is NOAA 1617760 Hilo, at-location.
  • Windward trades and swell. Opposite-face controls remain. This profile does not score a Kona day from Hilo sensors.

Regulations

Size limits, seasons, and possession rules change. Verify the current official regulations before fishing.

Location and Access

Cataloged coastal fishing destination

Bay · Hawaii

Loading map…

The map marker represents the cataloged waterbody or monitoring location and may not indicate legal parking or public access. Confirm access through the official information before visiting.

Data Sources

Planning limitation

Coastal conditions can vary over short distances. Predictions and remote observations are planning information, not guarantees of access or safety.

  • Pin is Hilo Bay / Kuhio Bay public harbor and windward bay fishing waters. This is not Kona and not Waiakea Public Fishing Area.
  • Do not transfer Hilo-derived wave or wind numerics to Kona or any lee destination.
  • Current Coastal Rating is a provisional public-Beta rating. The regional methodology is still calibrating and is not formally accepted. The verdict is capped at Consider while calibration and evidence remain limited. Coastal Estimated is unauthorized.
  • Customer Current Coastal Rating is unavailable. HAWAII_TROPICAL_PACIFIC_V1 is a candidate only. PATH1 and PATH2 are not authorized now. Physical readings are not an ordinal rating.