Surf Forecasts:
Navarro Rivermouth surf forecast from 9 Sep 2026:
- Best quality surf: Monday 14 Sep, 5AM (local time) - 8ft (2.4m), 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 1,109 kJ wave energy.
- Next surfable swell (1★+): Tuesday 8 Sep, 11PM (local time) - 3ft (0.9m), 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 Tuesday (Sep 08) at 11PM. The primary swell is predicted to be 0.9m and 7s period. 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-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 11s period and expected on Wednesday (Sep 09) at 5AM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Tue 8th Sep) | 3ft (0.9m) 7s |
| Best Surf | 5AM (Mon 14th Sep) | 8ft (2.4m) 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 at the Navarro Rivermouth.
I gotta be honest, it's a grim outlook. We're looking at a full 16-day window, but you won't get a real green light until Thursday, September 10th, and even then it's a fight. The whole period is hammered by cross-onshore winds that won't let up, messing up any chance of clean surf.
The water is at 59° F, which is pretty standard for this time of year.
The first sliver of hope is on Thursday afternoon, September 10th. There's a mix of swells, but the main one is a small 1-yard swell from the SW with a very long 17-second period, packing a punch with a combined energy of (924). The wind is cross-on from the NW at 15 mph, keeping it lumpy. It's a marginal call, and the score is low. That long-period groundswell might give a few decent lines at the mouth, but the chop will be a headache.
The next morning, Friday, September 11th, brings a bigger, short-period NW swell of 3 yards with an 8-second period. The energy is strong (1362), but the wind is a moderate cross-on from the NNW at 16 mph, making it a choppy, blown-out mess. This is strictly for experts because of the size and the onshore wind. Honestly, this setup looks more fun for kite surfing than paddle surfing.
The best bet, if you can call it that, is Friday morning, September 18th. A tiny 0.7-yard swell from the SW with a dreamy 19-second period. The combined energy is moderate (418). For the first time, the wind is light and from the West at 10 mph, which is onshore for this spot. It's a marginal call, but that long-period groundswell could wrap in and offer a few clean, lined-up waves before the afternoon cross-shore destroys it. It's the pick of a terrible lot, but it's only for the patient.
The rest of the two weeks is a total washout. It's a long stretch of poor conditions, with the wind never giving us a break. The forecast for the second week is shaky, but the pattern looks consistently bad. For an inconsistent spot like Navarro Rivermouth, a stretch like this is kind of normal. It usually doesn't stay this bad for long, but this one is a real test of your patience.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Wed morning, min 13°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 16°C on Sat afternoon, min 10°C on Sun morning). Wind will be generally light. | |||||||||||||||||||
Tue 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | ||||||||||||||
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 8 | NNW 8 | NW 12 | NW 7 | SW 17 | NW 8 | NW 8 | NW 8 | SW 15 | SW 14 | SW 14 | NW 10 | NW 10 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 118 | 86 | 132 | 106 | 149 | 194 | 553 | 589 | 678 | 774 | 423 | 305 | 301 | 557 | 391 | 316 | 611 | 725 | 1057 | 667 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross-on | cross-on | glassy | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off | cross-on | cross-on | cross | cross-on | cross-on | cross |
High Tide | 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 | 1:40PM1.76m | 2:51AM1.35m | |||||||
Low Tide | 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 | 7:26AM0.56m | 8:17PM0.16m | |||||||
 |  | | | |  | | | | | | | | | | | | | | | |
 | — | — | 6:50 | — | — | 6:50 | — | — | 6:52 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — |
 | 7:35 | — | — | 7:32 | — | — | 7:31 | — | — | 7:30 | — | — | 7:28 | — | — | 7:27 | — | — | 7:24 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 22 | 26 | 24 | 19 | 17 | 16 | 14 | 16 | 15 | 13 | 15 | 16 | 15 | 16 | 16 | 14 | 15 | 15 | 14 |
Feels °C | 19 | 20 | 22 | 21 | 18 | 16 | 14 | 14 | 13 | 11 | 10 | 11 | 13 | 12 | 13 | 12 | 15 | 12 | 11 | 12 |
Swell 1 Height (m) Direction Period (s) | S 12 | NW 7 | NW 8 | NNW 8 | NW 8 | SSW 17 | SW 17 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | NW 10 | SW 13 | NW 8 | SW 13 | SW 17 | SW 17 |
| kJ | 356 | 86 | 122 | 106 | 110 | 504 | 553 | 489 | 477 | 459 | 418 | 305 | 301 | 203 | 391 | 142 | 611 | 84 | 107 | 107 |
Swell 2 Height (m) Direction Period (s) | NW 7 | S 11 | S 11 | SSW 19 | SW 18 | NW 12 | WNW 11 | S 9 | SSW 8 | WSW 16 | WSW 15 | NW 9 | WNW 11 | WSW 12 | SW 14 | SW 19 | SSW 13 | SW 17 | SW 13 | SW 12 |
| kJ | 118 | 154 | 112 | 455 | 312 | 137 | 101 | 85 | 22 | 85 | 71 | 65 | 101 | 29 | 186 | 58 | 116 | 107 | 83 | 39 |
Swell 3 Height (m) Direction Period (s) | SW 18 | SSW 13 | SW 16 | S 10 | NW 12 | S 10 | SSW 11 | WSW 19 | WSW 16 | NW 13 | NW 12 | WNW 11 | WSW 13 | SW 21 | WSW 11 | SW 16 | SW 19 | WSW 9 | WNW 15 | WNW 14 |
| kJ | 111 | 102 | 132 | 98 | 149 | 45 | 73 | 34 | 53 | 44 | 37 | 76 | 34 | 67 | 23 | 41 | 127 | 8 | 84 | 20 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | NW 7 | NW 8 | NW 8 | NW 8 | NW 8 | NW 7 | NW 6 | NW 9 | NW 10 | — | NW 8 | — | NW 8 | NW 8 | NW 8 |
| kJ | — | — | — | — | — | 194 | 270 | 589 | 678 | 774 | 423 | 132 | 257 | 557 | — | 316 | — | 725 | 1057 | 667 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 30 | 0 | 98 | 13 | 0 | 147 | 72 | 13 | 290 | 291 | 42 | 147 | 220 | 0 | 98 | 36 | 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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