Surf Forecasts:
Navarro Rivermouth surf forecast from 20 Aug 2026:
- Best quality surf: Saturday 22 Aug, 11PM (local time) - 5ft (1.6m), 6s period, NW swell with glassy winds.
- Most powerful swell: Wednesday 26 Aug, 8PM (local time) - 8ft (2.5m), 8s period, NW swell with 799 kJ wave energy.
- Next surfable swell (1★+): Friday 21 Aug, 11PM (local time) - 2ft (0.6m), 10s period with WNW 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 Friday (Aug 21) at 11PM. The primary swell is predicted to be 0.6m and 10s period with a secondary swell of 0.6m and 8s. 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 2.5m 8s and forecast to arrive on Wednesday (Aug 26) 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 0.8m 14s period and expected on Thursday (Aug 20) at 11AM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Fri 21st Aug) | 2ft (0.6m) 10s |
| Best Surf | 11PM (Sat 22nd Aug) | 5ft (1.6m) 6s |
| Most Powerful | 8PM (Wed 26th Aug) | 8ft (2.5m) 8s |
Table - best surf conditions forecast for Navarro Rivermouth over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at the Navarro Rivermouth forecast for the next couple of weeks, and I’ll be straight with you – it’s a tough stretch for paddle surfing.
We don’t have any proper surf options for a good long while. The whole 16-day window is pretty much a write-off for the Rivermouth. This spot is an inconsistent river break, and as you’ll see, the conditions just don't line up. There’s a long, dry gap from now all the way through the end of the period.
The first few days, from Thursday the 20th through to Saturday the 22nd of August, are flat and messy. There’s a tiny cross-onshore breeze blowing from the WNW, and the swell is under 3 ft with weak combined energy. This is just not worth paddling out for.
On Sunday the 23rd of August, the swell bumps up a bit. In the morning we see 6 ft from the NW (559 energy), but the wind is cross-on and the period is a short 8 seconds. It’s a poor, choppy mess. The afternoon is the same story – 6 ft NW swell (500 energy) but it’s only rated as marginal at best. This pattern just keeps repeating itself. Monday the 24th brings a 5 ft NW swell (639 energy), but again, it’s cross-on and choppy.
The swell sticks around through the following week, with the biggest pulse coming on Friday the 28th of August. We get a 8 ft NW swell (1455 energy) – that’s strong, powerful stuff. But with the wind howling cross-on from the WNW at 9 mph, and the period staying short at 8 seconds, it’s just going to be lumpy and ugly. This is the only day that even sniffs a marginal rating, but for surfing? Nah, this setup looks more interesting for kite surfing than paddle surfing. It’s all too short-period and wind-affected.
After that, the swell fades out. By Tuesday the 1st of September, the energy drops to just 87 and the height is only 2 ft from the W.
In short, there’s nothing here for the dedicated surfer over the next 16 days. The break is inconsistent, the wind never cooperates, and even when the swell size gets up (over 8 ft on the 26th, 27th, and 29th of August, which is expert-only stuff), the wind ruins it. For the area, a blank run like this is pretty normal.
Rusty.
Short Range ForecastMostly dry. Very mild (max 16°C on Sat afternoon, min 11°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 16°C on Sun morning, min 11°C on Mon night). Wind will be generally light. | ||||||||||||||||||
Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | ||||||||||||||
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) | WNW 12 | WNW 12 | WNW 11 | WNW 11 | WNW 11 | WNW 10 | WNW 10 | WNW 10 | SW 17 | NW 7 | NW 8 | NW 8 | NW 8 | NW 9 | NW 8 | NW 8 | SW 16 | SW 16 | NW 7 |
Wave Graph | |||||||||||||||||||
196 | 237 | 173 | 167 | 128 | 112 | 80 | 77 | 107 | 301 | 328 | 383 | 380 | 384 | 299 | 205 | 267 | 214 | 355 | |
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-off | cross-on | cross-on | glassy | on | cross-on | glassy | cross-on | cross-on | glassy | cross-on | cross-on | cross |
High Tide | 7:21AM1.13m | 5:28PM1.65m | 8:50AM1.20m | 6:27PM1.65m | 9:45AM1.27m | 7:27PM1.67m | 10:24AM1.34m | 8:22PM1.72m | 10:55AM1.38m | 9:11PM1.77m | 11:21AM1.42m | 9:55PM1.81m | |||||||
Low Tide | 00:03AM0.29m | 11:25AM0.99m | 1:12AM0.24m | 12:44PM1.05m | 2:13AM0.18m | 1:54PM1.05m | 3:04AM0.11m | 2:49PM1.01m | 3:47AM0.05m | 3:34PM0.95m | 4:23AM0.01m | 4:13PM0.87m | 4:55AM-0.01m | ||||||
— | 6:31 | — | — | 6:33 | — | — | 6:33 | — | — | 6:35 | — | — | 6:35 | — | — | 6:35 | — | — | |
8:05 | — | 8:02 | — | — | 8:01 | — | — | 8:00 | — | — | 7:59 | — | — | 7:58 | — | — | 7:55 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 12 | 14 | 13 | 12 | 13 | 14 | 13 | 15 | 16 | 14 | 16 | 15 | 13 | 14 | 14 | 12 | 13 | 13 | 11 |
Feels °C | 10 | 12 | 11 | 11 | 11 | 12 | 11 | 12 | 13 | 13 | 14 | 13 | 13 | 11 | 12 | 12 | 11 | 12 | 9 |
Swell 1 Height (m) Direction Period (s) | NW 7 | WNW 12 | WNW 11 | WNW 11 | WNW 11 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | NW 7 | NW 8 | NW 8 | NW 8 | NW 9 | NW 8 | NW 8 | NW 8 | NW 7 | NW 7 |
164 | 237 | 173 | 167 | 128 | 112 | 80 | 77 | 54 | 219 | 328 | 383 | 380 | 384 | 299 | 205 | 200 | 189 | 247 | |
Swell 2 Height (m) Direction Period (s) | WNW 12 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | NNW 8 | NNW 8 | SSW 13 | SSW 12 | SW 19 | SW 18 | S 16 | SW 18 | S 14 | SW 17 | SW 16 | SW 16 | SW 16 |
196 | 220 | 226 | 236 | 154 | 101 | 41 | 40 | 67 | 59 | 231 | 117 | 122 | 255 | 153 | 181 | 267 | 214 | 161 | |
Swell 3 Height (m) Direction Period (s) | SSW 15 | SW 19 | SW 19 | WNW 14 | NW 7 | NW 7 | SSW 13 | SSW 13 | SW 17 | SSW 16 | SSW 12 | SSW 16 | SW 18 | S 14 | SW 18 | S 14 | S 13 | S 13 | S 13 |
314 | 55 | 58 | 21 | 37 | 29 | 99 | 99 | 107 | 82 | 29 | 83 | 199 | 153 | 192 | 144 | 126 | 126 | 86 | |
Wind waves Height (m) Direction Period (s) | — | NW 6 | NW 6 | NW 6 | — | — | — | — | NW 4 | NW 7 | — | — | — | — | — | — | — | — | NW 7 |
— | 74 | 53 | 47 | — | — | — | — | 41 | 301 | — | — | — | — | — | — | — | — | 355 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 116 | 13 | 13 | 290 | 211 | 0 | 13 | 293 | 0 | 73 | 32 | 0 | 44 | 44 | 0 | 73 | 290 | 13 |
Best forecast wave conditions in Mendocino County | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.











