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United States / Washington / Sea Davis Slough

Bite forecast: Sea Davis Slough

  • 79 acres
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Best fishing days for the next week

  1. WednesdaySeptember 9weather-based forecast
    69/100high activity

    Clear: 55–90 °F

  2. ThursdaySeptember 10weather-based forecast
    69/100high activity

    Clear: 63–88 °F

  3. SundaySeptember 6weather-based forecast
    66/100high activity

    Cloudy: 55–75 °F

Sea Davis Slough (Washington) — a popular fishing spot. About 32 ha in area. This is a sea water — its bite forecast is a marine one, computed apart from rivers and lakes. A smart bite calendar — moon phase, atmospheric pressure, and weather combined into an hourly fish-activity forecast for the coming days.

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Nearby rivers

  • West Pass0.5 mi
  • South Pass0.7 mi
  • Hat Slough3 mi
  • Stillaguamish River4 mi
  • South Slough7 mi
  • Freshwater Slough7 mi

Nearby water bodies

  • SeaWest Pass0.5 mi
  • SeaSouth Pass0.6 mi
  • BayLivingston Bay3 mi
  • LakeSmith Lake3 mi
  • LakeTidal Canal4 mi
  • LakeLake Grove4 mi
  • LakeLake Ketchum4 mi
  • ReservoirKristoferson Lake4 mi
  • BayUtsalady Bay4 mi
  • LakeLake Martha5 mi

Bite calendar

7–Sep 13
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Bite activity:highmediumlowslow
Based on:weatherseasonal
What is a bite calendar?
Coho salmonFlounderRockfishLingcodPacific halibutSteelheadChinook salmon

Coho salmon

8/10 · Good

Hourly activity

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

The bite is strong — fish are active. Weather is steady, with no sharp swings — fish behave predictably.

Peak bite hours

Best time — 06:00–08:00 (dawn bite) and 19:00–21:00 (dusk bite).

Tactics

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

Lures

In clear water, natural colors work best: trolling spoon or spinner.

Gear

It's a hot day — a hat, sunglasses, and plenty of water are a must.

Summary

Worth going — it's a productive day.

How this forecast is calculated

Why this forecast

The computed water temperature is around 68 °F — warmer than the 43–59 °F comfort range for Coho salmon: in the heat it drops deeper and feeds less often.

Computed water temperature by month; the green band is the 43–59 °F comfort rangecomfort 43–59 °F68 °F
JFMAMJJASOND

Coho salmon works the twilight: the peaks are pinned to sunrise and sunset — their times are in the sun-and-moon card above.

The day: daylight hours and when Coho salmon feeds0:0012:0024:00

Pressure is rising 0.09 inHg over the day — the bite usually settles down after a rise.

Pressure through the day, 0.09 inHg change
00:00 · 29.9223:00 · 30.00 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 peak season for Coho salmon here.

JFMAMJJASOND

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

Water

Wave
0.3 ft
Period
3 s

Open-Meteo Marine model, grid cell 2.1 mi from the waterbody. Values are daily means.

7 SepMonday, September 7
+76°

Clear · feels like +72°

Low / high
+53°…+80°
Precipitation
0.00 in
Wind
8 mph NNW
Cloud cover
0%
Humidity
25%
Pressure
29.86 inHg
00:00+55°—5 mphwest wind, 5 mph61%6%
01:00+55°—5 mphwest wind, 5 mph66%5%
02:00+54°—5 mphwest wind, 5 mph68%0%
03:00+54°—6 mphwest wind, 6 mph69%5%
04:00+54°—6 mphwest wind, 6 mph70%0%
05:00+53°—6 mphwest wind, 6 mph70%0%
06:00+53°—7 mphwest wind, 7 mph70%0%
07:00+54°—6 mphwest wind, 6 mph67%5%
08:00+60°—6 mphnorthwest wind, 6 mph55%6%
09:00+65°—7 mphnorthwest wind, 7 mph45%0%
10:00+69°—7 mphnorthwest wind, 7 mph37%0%
11:00+73°—7 mphnorth wind, 7 mph29%0%
12:00+76°—8 mphnorth wind, 8 mph25%0%
13:00+78°—9 mphnorth wind, 9 mph23%0%
14:00+80°—10 mphnorth wind, 10 mph22%0%
15:00+80°—9 mphnorth wind, 9 mph21%6%
16:00+80°—7 mphnorth wind, 7 mph22%6%
17:00+79°—6 mphnorthwest wind, 6 mph24%5%
18:00+76°—10 mphnorthwest wind, 10 mph27%10%
19:00+69°—6 mphnorthwest wind, 6 mph37%5%
20:00+63°—6 mphwest wind, 6 mph46%0%
21:00+60°—7 mphwest wind, 7 mph52%0%
22:00+58°—7 mphwest wind, 7 mph56%5%
23:00+57°—6 mphwest wind, 6 mph60%6%
+80°+67°+53°
Weather throughout the day
0:006:0012:0018:0023:00

Sun and moon

Monday, September 7
The day: daylight and the hours the moon is above the horizon. Local time0:0012:0024:00
DaylightMoon above the horizon
Sunrise
06:28
Sunset
19:29
Day length
13 h 1 min
Sunshine hours
12 h 20 min
UV index
5
moderate
Moon
Waning crescent
Moonrise
01:55
Moonset
18:11

The day is 3 min shorter than yesterday.

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

Solunar feeding periods

+10% in the windowMonday, September 7
Feeding windows on the day scale, local time0:0012:0024:00
Major periodsMinor periods
  • Minor01:25–02:25Moonrise
  • Major09:12–11:12Moon overhead
  • Minor17:41–18:41Moonset
  • Major21:40–23:40Moon underfoot

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?