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Forecast
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© 2026·AI-powered bite forecast
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United States / Hawaii / Heʻeia Bay

Bite forecast: Heʻeia Bay

  • 3 acres
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Best fishing days for the next week

  1. SundaySeptember 6weather-based forecast
    51/100medium activity

    Drizzle: 59–64 °F

  2. FridaySeptember 4weather-based forecast
    47/100medium activity

    Cloudy: 55–66 °F

  3. ThursdaySeptember 3weather-based forecast
    44/100medium activity

    Partly cloudy: 55–68 °F

Heʻeia Bay (Hawaii) — a popular fishing spot. About 1 ha in area. The town of Kailua-Kona is nearby. This is a sea water — its bite forecast is a marine one, computed apart from rivers and lakes. Here you'll find a bite prediction — when fish are active and which hours give the best chances, adjusted for weather and pressure.

Nearby towns

  • Kailua-Kona6 mi

Nearby water bodies

  • BayKeauhou Bay0.2 mi
  • BayKeawekāheka Bay5 mi
  • LakeHonokōhau Small Boat Harbor8 mi
  • PondAimakapa Fish Pond9 mi

Bite calendar

Aug 31 – Sep 6
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Bite activity:highmediumlowslow
Based on:weatherseasonal
What is a bite calendar?
CobiaMahi-mahi

Cobia

6/10 · Fair

Hourly activity

0:006:0012:0018:0023:00
Bite activity:highmediumlow

The bite is moderate — fish feed in short bursts. Weather is steady, with no sharp swings — fish behave predictably.

Peak bite hours

Best time — 10:00–16:00 (daytime activity).

Tactics

Look for structure — reefs, flats, channel edges; work them slowly near the bottom.

Lures

The water's turning murky — go with bright, noisy lures: trolling spoon or live bait.

Gear

Pack transitional-season clothing — mornings and evenings are chilly. Rain is expected — don't forget a rain jacket or a waterproof shell.

Summary

An average day — best chances during peak windows.

How this forecast is calculated

Why this forecast

The computed water temperature is around 60 °F — colder than the 68–84 °F comfort range for Cobia: the fish conserves energy and takes more cautiously.

Computed water temperature by month; the green band is the 68–84 °F comfort rangecomfort 68–84 °F60 °F
JFMAMJJASOND

Cobia feeds by day — between sunrise and sunset; their times are in the sun-and-moon card above.

The day: daylight hours and when Cobia feeds0:0012:0024:00

Pressure is flat: it moves no more than 0.00 inHg over the day, so the weather isn't shifting today's bite.

Pressure through the day, 0.00 inHg change
00:00 · 30.0623:00 · 30.05 inHg

One more input — the moon's feeding windows: within their hours the score sits higher than across the rest of the day. The window times are in the “Solunar feeding periods” card below.

Feeding windows on the day scale0:0012:0024:00

September is an active season for Cobia here.

JFMAMJJASOND

These are the same values the bite curve above was computed from. How the forecast works

Tides

  • High water06:203.0 ft
  • Low water12:301.6 ft
  • High water17:402.4 ft
0:006:0012:0018:0023:000:006:0012:0018:0023:00
Sea level height by hour
00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
0.9 ft1.1 ft1.5 ft2.0 ft2.4 ft2.8 ft3.0 ft2.9 ft2.7 ft2.4 ft2.0 ft1.8 ft1.6 ft1.6 ft1.8 ft2.0 ft2.2 ft2.4 ft2.4 ft2.3 ft2.0 ft1.6 ft1.3 ft1.0 ft

Open-Meteo tide model, grid point 1.6 mi away

Water

Water temp.
83 °F
In the model
60 °F
Wave
2.8 ft
Period
14 s

Open-Meteo Marine model, grid cell 1.6 mi from the waterbody. Values are daily means.

1 SepTuesday, September 1
+67°

Drizzle · feels like +70°

Low / high
+53°…+68°
Precipitation
0.01 in
Wind
9 mph W
Cloud cover
59%
Humidity
85%
Pressure
30.04 inHg
00:00+56°—2 mphsoutheast wind, 2 mph87%62%
01:00+55°—2 mphsoutheast wind, 2 mph86%71%
02:00+55°—2 mpheast wind, 2 mph85%76%
03:00+54°—2 mpheast wind, 2 mph85%91%
04:00+53°—1 mphsoutheast wind, 1 mph84%94%
05:00+53°—2 mphsoutheast wind, 2 mph81%81%
06:00+53°—2 mphsoutheast wind, 2 mph78%69%
07:00+58°—2 mphsoutheast wind, 2 mph73%91%
08:00+63°—4 mphsouth wind, 4 mph64%59%
09:00+65°—5 mphsouthwest wind, 5 mph64%62%
10:00+67°—6 mphwest wind, 6 mph71%55%
11:00+68°—7 mphwest wind, 7 mph76%77%
12:00+67°0.01 in9 mphwest wind, 9 mph85%59%
13:00+66°0.01 in9 mphwest wind, 9 mph91%100%
14:00+67°0.05 in8 mphwest wind, 8 mph90%100%
15:00+64°0.07 in7 mphwest wind, 7 mph93%95%
16:00+63°0.06 in7 mphwest wind, 7 mph94%98%
17:00+63°0.04 in5 mphwest wind, 5 mph95%100%
18:00+62°0.01 in4 mphwest wind, 4 mph100%100%
19:00+60°0.00 in2 mphsouthwest wind, 2 mph100%100%
20:00+59°—2 mphsoutheast wind, 2 mph94%50%
21:00+59°—2 mphsoutheast wind, 2 mph83%38%
22:00+58°—3 mphsoutheast wind, 3 mph79%52%
23:00+58°—3 mpheast wind, 3 mph78%59%
+68°+61°+53°
Weather throughout the day
0:006:0012:0018:0023:00

Sun and moon

Tuesday, September 1
The day: daylight and the hours the moon is above the horizon. Local time0:0012:0024:00
DaylightMoon above the horizon
Sunrise
06:07
Sunset
18:37
Day length
12 h 30 min
Sunshine hours
12 h 22 min
UV index
9
very high
Moon
Waning gibbous
Moonrise
21:45
Moonset
10:19

The day is 1 min shorter than yesterday.

Sunshine hours count direct sun only — cloud cover cuts it, so it is shorter than daylight.

Solunar feeding periods

+9% in the windowTuesday, September 1
Feeding windows on the day scale, local time0:0012:0024:00
Major periodsMinor periods
  • Major02:38–04:38Moon overhead
  • Minor09:49–10:49Moonset
  • Major15:04–17:04Moon underfoot
  • Minor21:15–22:15Moonrise

The windows are set by the moon's transit and rise, and the forecast above already accounts for them: within these hours the bite score sits higher than across the rest of the day, while the day's overall level still comes from the catch-calibrated model.

What are solunar periods?
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