
Surf Forecasts:
Navarro Rivermouth surf forecast from 10 Sep 2026:
- Best quality surf: Thursday 10 Sep, 8AM (local time) - 3ft (0.9m), 17s period, SW swell with glassy winds.
- Most powerful swell: Monday 14 Sep, 5PM (local time) - 11ft (3.5m), 8s period, NW swell with 1,398 kJ wave energy.
- Next surfable swell (1★+): Thursday 10 Sep, 2AM (local time) - 2.5ft (0.7m), 12s 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 Thursday (Sep 10) at 2AM. The primary swell is predicted to be 0.7m and 12s period with a secondary swell of 0.9m and 8s. 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 3.5m 8s and forecast to arrive on Monday (Sep 14) at 5PM. 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 16s period and expected on Friday (Sep 11) at 8AM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Thu 10th Sep) | 2.5ft (0.7m) 12s |
| Best Surf | 8AM (Thu 10th Sep) | 3ft (0.9m) 17s |
| Most Powerful | 5PM (Mon 14th Sep) | 11ft (3.5m) 8s |
Table - best surf conditions forecast for Navarro Rivermouth over the next 16 days.
The Lowdown
Alright, folks, Rusty here. Let's talk about the next stretch at the rivermouth. It's a bit of a grind, to be honest. We've got a lot of lumpy, cross-shore surf on the way that isn't going to do much for us. The first real window doesn't open until well into next week, so if you're itching for a wave, you might need to find something else to do for a while.
Water temps are sitting around 58°, which is pretty much average for this time of year. Nothing weird going on there.
The main issue is the wind. For the next seven days, it's mostly going to be blowing across the waves, not offshore. That's going to keep things messy. We'll see some bigger swell, like on the 13th and 14th, with waves hitting 7 feet, but it's that short-period, wind-blown stuff. We're talking 8-second intervals and a lot of chop. The energy readings are impressive – like 1069 and 1128 – but all that power is wasted when it's blown out. That combination of big, messy swell, and a river mouth means the kite surfers are going to be having a field day, while we'll be watching from the sand.
It's just poor surf for a solid stretch. The swell will peak around 8 feet on the 14th, but again, the wind angle will ruin it.
But don't give up. The light at the end of the tunnel starts to show on the 22nd. There's a push of long-period groundswell from the NW. And here's the kicker – the wind finally goes light, or even glassy. On Tuesday the 22nd, the afternoon looks prime. Swell is a solid 8 feet with an 11-second period, and the wind is calm. The energy is strong, reading 1831. That's an excellent call for experienced surfers only, though. This rivermouth is a beginner spot, but 8 feet of NW groundswell is way too much for anyone just starting out.
It stays interesting into the 23rd, too. The morning is a bit more manageable, but the Wednesday afternoon looks glassy and clean. The swell will ease a touch to around 7 feet with a 10-second period. The energy is still hefty at 1227. This is another window for those who know what they're doing. The NW direction is perfect, and with the wind completely gone, it should be proper. Remember, the long-period stuff is always better at a river mouth than a beach break; the wave will have more shape. It looks like a nice little window before things back off again.
Just remember, this is a long-range call. The near-term stuff is locked in, but the end of the period is promising, not a guarantee.
So hang tight, be patient, and keep an eye on the horizon for late next week.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Wed night, min 12°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 15°C on Sat night, min 11°C on Sun morning). Wind will be generally light. | ||||||||||||||||||
Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | ||||||||||||||
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 12 | WNW 12 | SW 17 | SW 16 | NW 8 | NW 8 | SW 15 | SW 14 | SW 14 | SW 14 | NW 9 | NW 7 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 |
Wave Graph | |||||||||||||||||||
149 | 171 | 553 | 489 | 328 | 464 | 418 | 412 | 301 | 238 | 266 | 552 | 559 | 808 | 1398 | 746 | 504 | 492 | 494 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross-off | cross-on | cross-on | cross | cross-on | cross-on | cross-off |
High Tide | 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 | 2:13PM1.72m | 3:59AM1.24m | ||||||
Low Tide | 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 | 8:04AM0.74m | 9:07PM0.17m | |||||||
— | 6:50 | — | — | 6:52 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — | |
— | — | 7:31 | — | — | 7:30 | — | — | 7:28 | — | — | 7:27 | — | — | 7:24 | — | — | 7:22 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 18 | 17 | 14 | 16 | 15 | 13 | 15 | 16 | 15 | 15 | 15 | 14 | 15 | 15 | 13 | 15 | 15 | 13 |
Feels °C | 21 | 18 | 16 | 13 | 14 | 12 | 11 | 12 | 13 | 12 | 12 | 10 | 12 | 12 | 11 | 10 | 13 | 13 | 11 |
Swell 1 Height (m) Direction Period (s) | NW 8 | SSW 17 | SW 17 | NW 8 | SW 16 | SW 15 | SW 15 | SW 14 | NW 11 | NW 10 | SW 14 | SW 13 | SSW 13 | SW 13 | SW 17 | SW 17 | NW 8 | SW 16 | NW 8 |
94 | 504 | 553 | 244 | 558 | 459 | 418 | 412 | 224 | 138 | 186 | 142 | 116 | 84 | 107 | 107 | 504 | 122 | 373 | |
Swell 2 Height (m) Direction Period (s) | SW 18 | WNW 12 | NW 11 | SW 16 | WNW 10 | SSW 8 | NW 12 | NW 11 | SW 14 | SW 14 | WSW 11 | SW 19 | SW 19 | SW 18 | SW 13 | SW 12 | SW 16 | NW 13 | SW 16 |
312 | 171 | 119 | 489 | 56 | 19 | 71 | 162 | 301 | 238 | 23 | 58 | 127 | 108 | 83 | 39 | 132 | 44 | 87 | |
Swell 3 Height (m) Direction Period (s) | NW 12 | S 10 | SSW 11 | SSW 9 | S 8 | WSW 16 | WSW 15 | WSW 13 | WSW 13 | WSW 12 | NNW 10 | SW 16 | WSW 10 | WSW 9 | W 9 | WNW 14 | WNW 13 | SW 12 | NW 12 |
149 | 65 | 98 | 113 | 34 | 85 | 72 | 59 | 34 | 29 | 10 | 41 | 10 | 8 | 2 | 21 | 69 | 37 | 37 | |
Wind waves Height (m) Direction Period (s) | — | NW 7 | NW 7 | — | NW 8 | NW 8 | NW 7 | NW 6 | NW 5 | NW 4 | NW 9 | NW 7 | NW 8 | NW 8 | NW 8 | NW 8 | — | NW 8 | NW 8 |
— | 107 | 102 | — | 328 | 464 | 247 | 79 | 46 | 29 | 266 | 552 | 559 | 808 | 1398 | 746 | — | 492 | 494 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 147 | 95 | 13 | 147 | 291 | 13 | 291 | 220 | 13 | 116 | 291 | 0 | 116 | 291 | 13 | 98 | 72 | 0 |
Best forecast wave conditions in Mendocino County | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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.










