Seven-day daylight low-tide outlook
Best tidepooling times near Greenhead Slough, WA
The lowest predicted daylight low near Greenhead Slough, WA in the next seven days is -2.0 ft MLLW at 9:29 AM on Wednesday, July 15. A broad planning window is 7:59 AM–10:59 AM PDT; arrive while the water is falling when local access allows, then confirm swell, weather, closures, and the route back.
This is a tide-station planning read, not a beach recommendation. NOAA station 9440650 does not identify a legal access point or account for waves, surge, terrain, wildlife rules, or water trapped behind local bars and channels.
Daylight lows
9
next seven days
Daylight minus tides
6
below 0.0 ft MLLW
Station-local time
PDT
NOAA station 9440650
| Day | Low tide | Height | Daylight | Broad window |
|---|---|---|---|---|
| Mon, Jul 13 | 7:48 AM PDT | -1.6 ft MLLW | Yes | 6:18 AM–9:18 AM |
| Mon, Jul 13 | 7:50 PM PDT | 2.6 ft MLLW | Yes | 6:20 PM–9:20 PM |
| Tue, Jul 14 | 8:40 AM PDT | -1.9 ft MLLW | Yes | 7:10 AM–10:10 AM |
| Tue, Jul 14 | 8:45 PM PDT | 2.2 ft MLLW | Yes | 7:15 PM–10:15 PM |
| Wed, Jul 15 · lowest daylight low | 9:29 AM PDT | -2.0 ft MLLW | Yes | 7:59 AM–10:59 AM |
| Wed, Jul 15 | 9:39 PM PDT | 1.8 ft MLLW | No | 8:09 PM–11:09 PM |
| Thu, Jul 16 | 10:16 AM PDT | -1.9 ft MLLW | Yes | 8:46 AM–11:46 AM |
| Thu, Jul 16 | 10:31 PM PDT | 1.5 ft MLLW | No | 9:01 PM–12:01 AM |
| Fri, Jul 17 | 11:01 AM PDT | -1.5 ft MLLW | Yes | 9:31 AM–12:31 PM |
| Fri, Jul 17 | 11:23 PM PDT | 1.3 ft MLLW | No | 9:53 PM–12:53 AM |
| Sat, Jul 18 | 11:45 AM PDT | -0.8 ft MLLW | Yes | 10:15 AM–1:15 PM |
| Sun, Jul 19 | 12:14 AM PDT | 1.3 ft MLLW | No | 10:44 PM–1:44 AM |
| Sun, Jul 19 | 12:29 PM PDT | 0.1 ft MLLW | Yes | 10:59 AM–1:59 PM |
Heights are feet relative to this station's local Mean Lower Low Water datum. The broad window spans 90 minutes on either side of the predicted low; it is not an access, surf, or safety forecast.
Plan beyond seven days
Find every 2026 minus tide at this station.
The annual tide table includes every predicted low below 0.0 ft MLLW, month-by-month, alongside the complete high/low calendar.
Questions and quick answers
Low water is the signal; the shoreline is the decision.
- When is the best time to go tidepooling near Greenhead Slough, WA?
- The lowest predicted daylight low in this seven-day outlook is -2.0 ft MLLW at 9:29 AM PDT on Wednesday, July 15. The page shows a broad 7:59 AM–10:59 AM planning window, but local access, surf, weather, and closures still decide whether the shoreline is usable.
- When is the next minus tide near Greenhead Slough, WA?
- The next low below 0.0 ft MLLW in this outlook is -1.6 ft MLLW at 7:48 AM PDT on Monday, July 13. It occurs during daylight.
- What does a negative or minus tide mean?
- A minus tide is a predicted low below 0.0 ft on the local MLLW datum. It does not mean the ocean has no water, and MLLW zero is not directly comparable between distant stations.
- Does NOAA station 9440650 identify a tidepool beach?
- No. NOAA station 9440650 supplies the local prediction reference used here. It does not confirm a beach, legal access, parking, exposed habitat, safe surf, or the timing of water behind sandbars and channels. Check the specific park, beach, or land manager before going.
- How early should I arrive before low tide?
- This page shows a broad window from 90 minutes before to 90 minutes after the predicted low. Favor the falling side when local guidance allows, keep watching the route back, and leave earlier when surf, wind, terrain, darkness, or access rules require it.