Surf Forecasts:
Navarro Rivermouth surf forecast from 8 Sep 2026:
- Best quality surf: Thursday 10 Sep, 8AM (local time) - 3ft (0.9m), 17s period, SW swell with glassy winds.
- Most powerful swell: Saturday 12 Sep, 2PM (local time) - 6ft (1.8m), 11s period, NW swell with 763 kJ wave energy.
- Next surfable swell (1★+): Monday 7 Sep, 8PM (local time) - 5ft (1.5m), 7s period with NW swell.
Best Forecast Surf Conditions for Navarro Rivermouth this week:
The surf forecast for Navarro Rivermouth over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Sep 07) at 8PM. The primary swell is predicted to be 1.5m and 7s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Navarro Rivermouth in the next 16 days are 1.8m 11s and forecast to arrive on Saturday (Sep 12) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 12s period and expected on Tuesday (Sep 08) at 5PM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Mon 7th Sep) | 5ft (1.5m) 7s |
| Best Surf | 8AM (Thu 10th Sep) | 3ft (0.9m) 17s |
| Most Powerful | 2PM (Sat 12th Sep) | 6ft (1.8m) 11s |
Table - best surf conditions forecast for Navarro Rivermouth over the next 16 days.
The Lowdown
G'day, I'm Rusty. Let's have a look at what's on the cards for the next couple of weeks.
Truth be told, it's a bit of a mixed bag. We've got a long stretch ahead with plenty of wind and chop, but there's a light at the end of the tunnel if you're patient. The first real chance of anything decent doesn't show up until late in the period.
The water temp is sitting at 59° right now, which is about average for this time of year, so no surprises there.
We start off with a pretty grim run. From Monday the 7th right through to late September, the call is mostly "poor surf conditions" at Navarro Rivermouth. The wind is cross-onshore almost every day, and while the swell is coming from the NW at 4ft to 7ft, the period is short, around 7 to 8 seconds. That's weak, wind-affected slop. The energy is moderate at best, but it's all messy. Even the Wednesday the 9th has an offshore wind, but the swell is only 4ft and the conditions are still rated poor. Not worth paddling out for.
The only time this spot even gets a *marginal* rating is on a few mornings, like Thursday the 10th, when a 3ft SW swell with a 17-second period rolls in, giving good energy. That's a long-period groundswell, but it's small and the wind is still cross-onshore. For a river mouth that's inconsistent and best with a NW swell, this SW direction is a bit off. Not a standout.
The real stand-out, and I mean the only one worth getting excited about, is on Tuesday the 22nd of September. The morning shows a 6ft WNW swell with an 11-second period, building to 8ft from the WNW with a 13-second period by the afternoon. The energy is strong. And the wind? It goes glassy. Dead calm. The forecast says "excellent surf conditions for experienced surfers." That's what we're waiting for. It's a bit of a long wait, but that afternoon session at Navarro Rivermouth should be clean, powerful, and lined up. For a break that's inconsistent, this is a rare treat. Keep in mind, 8ft is getting up there, so it's one for the experienced crew.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Wed morning, min 15°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 17°C on Thu afternoon, min 10°C on Sat night). Winds increasing (calm on Thu night, fresh winds from the NW by Sat afternoon). | |||||||||||||||||||
Mon 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | ||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | NW 7 | NW 7 | NW 7 | NW 7 | NW 7 | NW 8 | SW 19 | NW 12 | SW 17 | SW 17 | NW 8 | NW 8 | NW 8 | NW 8 | SW 14 | NW 7 | NW 7 | NW 7 | NW 8 | NW 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 156 | 246 | 152 | 121 | 89 | 132 | 518 | 149 | 419 | 560 | 589 | 634 | 661 | 435 | 317 | 439 | 317 | 255 | 257 | 241 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross-on | cross-on | cross-off | cross-on | cross-on | glassy | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross |
High Tide | 8:34PM1.91m | 10:33AM1.56m | 9:34PM1.94m | 11:08AM1.64m | 10:29PM1.91m | 11:41AM1.71m | 11:20PM1.85m | 12:12PM1.76m | 00:11AM1.74m | 12:42PM1.78m | 1:01AM1.62m | 1:11PM1.78m | 1:53AM1.48m | |||||||
Low Tide | 2:42PM0.86m | 3:40AM-0.14m | 3:39PM0.71m | 4:24AM-0.12m | 4:29PM0.56m | 5:03AM-0.05m | 5:17PM0.42m | 5:40AM0.06m | 6:02PM0.30m | 6:16AM0.21m | 6:47PM0.22m | 6:51AM0.38m | 7:31PM0.17m | |||||||
 |  | | | | |  |  |  | | | | | | | | | | | | |
 | — | — | 6:48 | — | — | 6:50 | — | — | 6:50 | — | — | 6:52 | — | — | 6:52 | — | — | 6:54 | — | — |
 | 7:36 | — | — | 7:35 | — | — | 7:32 | — | — | 7:31 | — | — | 7:30 | — | — | 7:28 | — | — | 7:27 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 17 | 21 | 19 | 22 | 26 | 23 | 20 | 19 | 17 | 14 | 16 | 15 | 14 | 14 | 16 | 15 | 14 | 15 | 13 |
Feels °C | 14 | 15 | 18 | 17 | 19 | 23 | 20 | 17 | 18 | 15 | 14 | 14 | 12 | 12 | 10 | 10 | 10 | 12 | 12 | 12 |
Swell 1 Height (m) Direction Period (s) | NW 7 | NW 7 | NW 7 | S 12 | NW 7 | NW 8 | NW 8 | NW 8 | SW 17 | SW 17 | SW 16 | SW 16 | SW 15 | SSW 15 | SW 14 | SW 14 | SW 14 | NW 7 | NW 8 | NW 8 |
| kJ | 156 | 246 | 152 | 356 | 89 | 119 | 119 | 116 | 419 | 560 | 489 | 477 | 447 | 372 | 305 | 301 | 203 | 200 | 257 | 241 |
Swell 2 Height (m) Direction Period (s) | SSW 14 | S 13 | S 12 | NW 7 | S 11 | S 11 | SW 19 | NW 12 | NW 12 | WNW 11 | SSW 9 | S 8 | SSW 8 | WSW 15 | WSW 13 | WSW 13 | NW 10 | SW 14 | SW 13 | SSW 13 |
| kJ | 220 | 289 | 251 | 121 | 154 | 112 | 518 | 149 | 137 | 101 | 92 | 35 | 19 | 73 | 60 | 34 | 80 | 186 | 142 | 116 |
Swell 3 Height (m) Direction Period (s) | SSE 13 | SSW 13 | SSW 14 | SW 18 | SSW 13 | SW 16 | S 10 | SW 18 | S 10 | SSW 11 | WSW 18 | WSW 16 | WSW 16 | NW 12 | NW 11 | S 10 | WSW 12 | NW 10 | SW 19 | SW 19 |
| kJ | 178 | 116 | 163 | 111 | 102 | 132 | 128 | 312 | 46 | 102 | 33 | 51 | 51 | 37 | 31 | 8 | 29 | 74 | 58 | 127 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | NW 7 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 7 | NW 7 | NW 7 | NW 7 | — | — |
| kJ | — | — | — | — | — | — | — | — | 194 | 292 | 589 | 634 | 661 | 435 | 317 | 439 | 317 | 255 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 116 | 0 | 44 | 30 | 0 | 73 | 13 | 0 | 147 | 72 | 13 | 291 | 291 | 13 | 291 | 293 | 13 | 147 | 291 | 13 |
Best forecast wave conditions in Mendocino County | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
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Information about the Navarro Rivermouth Surf forecast
The above surf forecast table for Navarro Rivermouth provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Navarro Rivermouth can be found by selecting the local surf guide option on the grey menu. Our Navarro Rivermouth surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Navarro Rivermouth) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Navarro Rivermouth may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Navarro Rivermouth is 48 km (30 miles) from Ukiah. If you plan a vacation in Mendocino County, look for hotels and other accommodation in Ukiah. Ukiah has rooms for a wide range of budgets as well as car hire and transport links.
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