
Surf Forecasts:
Navarro Rivermouth surf forecast from 11 Sep 2026:
- Best quality surf: Tuesday 15 Sep, 8AM (local time) - 7.5ft (2.3m), 8s period, NW swell with cross-offshore winds.
- Most powerful swell: Monday 14 Sep, 8PM (local time) - 10ft (3.0m), 8s period, NW swell with 1,220 kJ wave energy.
- Next surfable swell (1★+): Saturday 12 Sep, 11PM (local time) - 2.5ft (0.8m), 14s period with SW 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 Saturday (Sep 12) at 11PM. The primary swell is predicted to be 0.8m and 14s period with a secondary swell of 0.8m and 10s. Another secondary swell of 0.8m and 4s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Navarro Rivermouth in the next 16 days are 3.0m 8s and forecast to arrive on Monday (Sep 14) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 16s period and expected on Friday (Sep 11) at 2PM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Sat 12th Sep) | 2.5ft (0.8m) 14s |
| Best Surf | 8AM (Tue 15th Sep) | 7.5ft (2.3m) 8s |
| Most Powerful | 8PM (Mon 14th Sep) | 10ft (3.0m) 8s |
Table - best surf conditions forecast for Navarro Rivermouth over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s break down the next couple of weeks. We’ve just got one spot on the list: Navarro Rivermouth. And I gotta tell ya, it’s a tough run ahead. This break is inconsistent at the best of times, and the first week and a half is largely a washout. There’s a big dry spell comin’ our way.
The first real chance of something decent doesn’t hit until Wednesday the 16th of September. Morning is still a bit messy, but that Wednesday afternoon? Now we’re cookin’. The wind goes glassy, the swell is a clean 5 ft from the NW. The energy is moderate (348), but with that slick surface, it’s the best look in a long, dry stretch. It’s a river mouth, so those extra-long period swells can run a bit straight sometimes, but the period here is only 8 seconds, so it should be a fun, rippable little wave.
A week later, things start to get a bit more serious. On Wednesday the 24th of September, we see a solid pulse of NW groundswell moving in. The morning has sets at 10 ft with a period of 12 seconds – that’s a long-period groundswell packin’ some serious energy (3593). The wind is light cross-onshore, but it’s still surfable. That’s big, powerful stuff. Over 8 ft, so this is strictly for experienced surfers only. It’ll be a heavy, grinding wave at a river mouth, so you gotta know what you’re doin’. That afternoon the swell holds at 10 ft and the period bumps to 13 seconds, though the energy drops slightly (2627). The wind stays light. This is the true standout of the whole outlook – but given it’s over a week away, treat that as promisin’ but not locked in.
Water temp at Navarro Rivermouth is sittin’ at 57° with an anomaly of -2°, so just a touch cooler than average for this time of year.
Between the 17th and the 22nd, it’s mostly small, junky, and cross-on – not worth paddlin’ out for.
To sum it up: if you’re patient, Wednesday the 16th afternoon is your best early bet for some clean, glassy fun. For the big dogs, keep an eye on that big NW groundswell on the 24th – but it’s one for experts only.
Rusty.
Short Range ForecastMostly dry. Very mild (max 16°C on Fri morning, min 11°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 15°C on Mon morning, min 11°C on Mon morning). Wind will be generally light. | ||||||||||||||||||||
Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | |||||||||||||||
AM | 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 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | NW 9 | NW 9 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | SW 21 |
Wave Graph | |||||||||||||||||||||
231 | 459 | 418 | 412 | 301 | 238 | 170 | 497 | 532 | 547 | 1163 | 684 | 504 | 634 | 470 | 423 | 299 | 211 | 135 | 101 | 160 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross | cross-on | cross-on | cross-off | cross-on | cross-on | cross-off | cross-on | cross-on | cross | on | cross-on | cross-off | cross-on | glassy | glassy | cross-on | cross-on | glassy |
High Tide | 12:12PM1.76m | 00:11AM1.74m | 12:42PM1.78m | 1:01AM1.62m | 1:11PM1.78m | 1:53AM1.48m | 1:40PM1.76m | 2:51AM1.35m | 2:13PM1.72m | 3:59AM1.24m | 2:50PM1.66m | 5:25AM1.19m | 3:37PM1.60m | ||||||||
Low Tide | 6:02PM0.30m | 6:16AM0.21m | 6:47PM0.22m | 6:51AM0.38m | 7:31PM0.17m | 7:26AM0.56m | 8:17PM0.16m | 8:04AM0.74m | 9:07PM0.17m | 8:47AM0.90m | 10:03PM0.21m | 9:43AM1.02m | 11:08PM0.24m | ||||||||
6:52 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — | 6:56 | — | — | 6:56 | — | — | |
— | 7:30 | — | — | 7:28 | — | — | 7:27 | — | — | 7:24 | — | — | 7:22 | — | — | 7:22 | — | — | 7:20 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 15 | 13 | 14 | 15 | 14 | 15 | 15 | 14 | 15 | 15 | 13 | 15 | 15 | 14 | 15 | 14 | 15 | 16 | 15 | 13 |
Feels °C | 14 | 12 | 11 | 11 | 11 | 12 | 12 | 11 | 10 | 13 | 11 | 10 | 13 | 14 | 14 | 13 | 12 | 15 | 14 | 13 | 13 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | NW 10 | NW 9 | SW 13 | SSW 13 | NW 8 | SW 17 | SW 17 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 |
558 | 459 | 418 | 412 | 301 | 217 | 170 | 142 | 116 | 547 | 107 | 106 | 504 | 634 | 470 | 423 | 299 | 211 | 135 | 101 | 71 | |
Swell 2 Height (m) Direction Period (s) | WNW 10 | SSW 8 | NW 12 | NW 11 | NW 11 | SW 14 | SW 14 | SW 19 | SW 19 | SW 13 | SW 13 | SW 12 | SW 16 | SW 16 | SW 16 | SW 16 | SSW 17 | SSW 18 | SSW 16 | SSW 16 | SSW 15 |
63 | 19 | 71 | 162 | 119 | 238 | 186 | 58 | 127 | 84 | 82 | 39 | 130 | 122 | 87 | 121 | 258 | 103 | 198 | 198 | 126 | |
Swell 3 Height (m) Direction Period (s) | S 8 | WSW 16 | WSW 15 | WSW 13 | NW 9 | WSW 12 | WSW 11 | SW 16 | WSW 10 | SW 17 | WNW 15 | WNW 14 | WNW 13 | NW 13 | NW 12 | WNW 12 | WNW 11 | WNW 11 | WNW 11 | WNW 10 | SW 21 |
34 | 85 | 72 | 59 | 61 | 29 | 23 | 41 | 10 | 107 | 84 | 21 | 69 | 44 | 37 | 56 | 49 | 47 | 44 | 40 | 160 | |
Wind waves Height (m) Direction Period (s) | NW 7 | NW 7 | NW 7 | NW 6 | NW 5 | NW 4 | — | NW 9 | NW 8 | — | NW 8 | NW 8 | — | — | — | — | — | — | — | — | — |
231 | 325 | 233 | 79 | 42 | 18 | — | 497 | 532 | — | 1163 | 684 | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 190 | 291 | 13 | 270 | 179 | 0 | 291 | 293 | 0 | 147 | 291 | 13 | 98 | 42 | 0 | 44 | 0 | 0 | 23 | 20 | 0 |
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.










