
Surf Forecasts:
Navarro Rivermouth surf forecast from 4 Aug 2026:
- Best quality surf: Sunday 9 Aug, 8PM (local time) - 11ft (3.5m), 9s period, NW swell with cross-onshore winds.
- Most powerful swell: Monday 10 Aug, 8PM (local time) - 11ft (3.5m), 9s period, NW swell with 1,884 kJ wave energy.
- Next surfable swell (1★+): Tuesday 4 Aug, 5AM (local time) - 7ft (2.1m), 9s 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 (Aug 04) at 5AM. The primary swell is predicted to be 2.1m and 9s period with a secondary swell of 0.3m and 16s. 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 9s and forecast to arrive on Monday (Aug 10) 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 0.8m 16s period and expected on Sunday (Aug 09) at 5AM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Tue 4th Aug) | 7ft (2.1m) 9s |
| Best Surf | 8PM (Sun 9th Aug) | 11ft (3.5m) 9s |
| Most Powerful | 8PM (Mon 10th Aug) | 11ft (3.5m) 9s |
Table - best surf conditions forecast for Navarro Rivermouth over the next 16 days.
The Lowdown
Righto, let’s have a look at what’s cookin’ for the Navarro Rivermouth. Straight up, it’s a tough stretch ahead. This is a river mouth setup, inconsistent by nature, and honestly, there’s no day in the next 16 days that I’d call a proper standout. The wind is gonna be a problem – nearly every session has a cross-onshore breeze messin’ with the surface. It’s a shame, because the swell is there, but the conditions are just not playing ball.
We start off on Tuesday, August 4th with some small hope. Morning brings a 6 ft NW swell, period of 9 seconds, and the wave energy is moderate at 665. The wind is a light cross-onshore from the SW at 6 mph, which is doable but not clean. The afternoon drops to 6 ft, still cross-on, and the score is low. It’s marginal at best.
Wednesday the 5th is a write-off – 5 ft swell but the wind picks up to 9 mph, making it choppy and poor. Thursday the 6th sees a tiny 2 ft SW swell with a long 13-second period, but the wind is onshore in the morning and cross-on in the arvo. Not worth paddling out for.
Friday the 7th through to the end of the first week is a grind. The swell builds, but it’s all NW and the wind stays cross-onshore from the NW at 9 mph. Saturday the 8th has 7 ft, Sunday the 9th hits 8 ft, and by Sunday afternoon we’re at 10 ft with a moderate breeze at 12 mph making it choppy and ugly. That’s expert-size swell, 10 ft, but the wind is trashing it. The water temp is about average for the time of year, nothing weird.
The second week doesn’t get any better. Monday the 10th and Tuesday the 11th keep pumping 10 ft NW swell, but the wind is still cross-onshore, and the wave energy is strong (1443 and 1326). Honestly, with that much wind, this setup looks more interesting for kite surfing than paddle surfing. The swell is too big for beginners, and the chop is relentless.
By Wednesday the 12th, the swell drops to 8 ft, but the wind is still cross-on. Thursday the 13th has 8 ft with a 10-second period, and the energy is strong at 1293, but the wind is still light cross-onshore. It’s frustrating.
From the 15th onward, the swell backs off, and we get a long-period WNW groundswell (16-17 seconds) on the 16th and 17th, but it’s only 3 ft to 3 ft, and the wind is still problematic. A long period like that is better for a point or reef, but the river mouth isn’t ideal for that kind of wave, and the cross-onshore doesn’t help.
There’s a big gap of poor quality from the start, and the whole 16 days is a struggle. The only positive is that the swell keeps trying, and forecasts can change, but right now, it’s a blank run. I wouldn’t be waxing up for anything here.
Rusty.
Short Range ForecastMostly dry. Very mild (max 15°C on Tue morning, min 12°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 15°C on Fri morning, min 11°C on Fri night). Wind will be generally light. | ||||||||||||||||||
Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | ||||||||||||||
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 9 | NW 9 | NW 9 | NW 8 | NW 9 | NW 8 | NW 8 | SW 13 | SW 13 | NW 8 | NW 6 | NW 7 | NW 7 | NW 7 | NW 7 | NW 8 | NW 8 | NW 9 | NW 8 |
Wave Graph | |||||||||||||||||||
872 | 580 | 427 | 306 | 304 | 277 | 169 | 88 | 84 | 71 | 100 | 184 | 365 | 285 | 423 | 699 | 878 | 1407 | 1033 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | glassy | cross-on | cross-on | glassy | on | cross-on | glassy | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross |
High Tide | 3:27AM1.28m | 3:55PM1.75m | 4:48AM1.14m | 4:38PM1.81m | 6:32AM1.09m | 5:30PM1.86m | 8:16AM1.14m | 6:29PM1.91m | 9:31AM1.24m | 7:33PM1.98m | 10:24AM1.35m | 8:36PM2.04m | |||||||
Low Tide | 9:34PM0.50m | 9:14AM0.46m | 10:38PM0.37m | 9:58AM0.65m | 11:48PM0.24m | 10:54AM0.82m | 1:00AM0.09m | 12:07PM0.95m | 2:07AM-0.06m | 1:25PM1.00m | 3:07AM-0.20m | 2:35PM0.97m | 4:00AM-0.29m | ||||||
— | 6:16 | — | — | 6:18 | — | — | 6:18 | — | — | 6:20 | — | — | 6:20 | — | — | 6:22 | — | — | |
8:24 | — | 8:22 | — | — | 8:22 | — | — | 8:21 | — | — | 8:20 | — | — | 8:19 | — | — | 8:17 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 15 | 15 | 13 | 15 | 15 | 13 | 14 | 14 | 12 | 15 | 15 | 12 | 15 | 15 | 13 | 15 | 15 | 13 |
Feels °C | 13 | 13 | 13 | 12 | 13 | 13 | 13 | 14 | 12 | 10 | 13 | 12 | 11 | 12 | 12 | 11 | 12 | 12 | 11 |
Swell 1 Height (m) Direction Period (s) | NW 9 | NW 9 | NW 9 | NW 8 | NW 9 | NW 8 | NW 8 | NW 8 | NNW 8 | NW 8 | NW 6 | SSW 19 | SSW 13 | SSW 18 | SSW 18 | SSW 16 | SSW 16 | SSW 16 | SSW 15 |
872 | 580 | 427 | 306 | 304 | 277 | 169 | 59 | 52 | 71 | 100 | 203 | 111 | 240 | 240 | 226 | 263 | 188 | 167 | |
Swell 2 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | WNW 8 | SW 13 | SSW 13 | SSW 18 | SW 13 | SW 16 | SW 12 | SW 12 | SSW 12 | SW 12 | SSW 12 | SSW 11 |
65 | 85 | 78 | 56 | 73 | 99 | 93 | 40 | 84 | 113 | 126 | 79 | 130 | 37 | 35 | 56 | 37 | 27 | 12 | |
Swell 3 Height (m) Direction Period (s) | SW 12 | SW 12 | SW 12 | SSW 14 | SSW 11 | SSW 11 | S 13 | SW 13 | WNW 8 | SW 18 | SW 13 | S 11 | SSW 19 | NW 12 | NW 12 | W 13 | SW 23 | SW 21 | SW 21 |
38 | 37 | 36 | 39 | 24 | 12 | 30 | 88 | 40 | 81 | 57 | 10 | 74 | 35 | 21 | 13 | 21 | 18 | 72 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | NW 7 | NW 7 | NW 7 | NW 7 | NW 8 | NW 8 | NW 9 | NW 8 |
— | — | — | — | — | — | — | — | — | — | — | 184 | 365 | 285 | 423 | 699 | 878 | 1407 | 1033 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 13 | 44 | 13 | 0 | 23 | 23 | 0 | 44 | 13 | 0 | 290 | 52 | 13 | 147 | 636 | 42 | 116 | 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.











