Surf Forecasts:
Navarro Rivermouth surf forecast from 15 Aug 2026:
- Best quality surf: Tuesday 18 Aug, 8PM (local time) - 5ft (1.6m), 7s period, NW swell with glassy winds.
- Most powerful swell: Saturday 22 Aug, 2AM (local time) - 6ft (1.9m), 8s period, NW swell with 447 kJ wave energy.
- Next surfable swell (1★+): Saturday 15 Aug, 5AM (local time) - 3.5ft (1.0m), 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 Saturday (Aug 15) at 5AM. The primary swell is predicted to be 1.0m and 7s period. 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 1.9m 8s and forecast to arrive on Saturday (Aug 22) at 2AM. 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 Sunday (Aug 16) at 2AM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Sat 15th Aug) | 3.5ft (1.0m) 7s |
| Best Surf | 8PM (Tue 18th Aug) | 5ft (1.6m) 7s |
| Most Powerful | 2AM (Sat 22nd Aug) | 6ft (1.9m) 8s |
Table - best surf conditions forecast for Navarro Rivermouth over the next 16 days.
The Lowdown
Alright, surfers, Rusty here. Let’s be straight with you: the next couple of weeks are looking pretty grim for pulling into anything decent at Navarro Rivermouth. We’ve got a lot of onshore wind and messy, lumpy conditions to wade through before we see any real potential, and even then, it’s going to be a tough call for most of us.
Right off the bat, from Saturday the 15th through to the 23rd, it’s a write-off for the most part. We’re looking at small, weak surf in the 3 ft to 4 ft range, with the energy barely getting going. The wind is sitting cross-onshore, and the wave quality is just poor – lumpy and uninviting. There’s nothing here worth paddling out for. Honestly, you’re better off finding something else to do.
Things start to pick up in size around Wednesday the 19th, with waves pushing to 6 ft, but the energy is still getting chopped by that moderate cross-onshore breeze. That trend continues into the weekend of the 23rd and 24th, with swell climbing to 8 ft, but it’s still coming with that cross-onshore wind and poor quality. The only slight glimmer in the whole stretch is on Monday morning the 24th, when a 7 ft NW swell shows up with lighter winds, earning a marginal call. But with a period of only 8 seconds, it’s still going to be a grovel, and not what I’d call a standout.
The bigger stuff starts to roll in during the last few days of the month. On the 25th and 26th, we’re seeing solid 8 ft to 8 ft surf. Morning sessions on the 25th and 26th hold a little more promise as the winds are lighter, but that cross-onshore angle is still going to put a wrinkle on things. This is when it starts to get serious, size-wise. By the afternoon of the 27th, we’ve got an 12 ft NW swell, and the table says the wind and tide are favorable, but it’s predicted to be too big for this break. That’s a session for experts only, and even then, it’s a gamble. The 28th brings a huge 13 ft NW swell, but it’s coming with a 20 km/h cross-onshore wind and the comment is just “poor surf conditions.” Too big, too messy, and not safe for most.
So, the long and short of it: the standout window, if you can call it that, is the 27th of August. It’s the one day where conditions align, but you’d better be a seasoned charger because that 12 ft swell is no joke. That’s the one to circle on the calendar if you have the skills and the nerve. It’s a week and a half out, so we’ll have to see how it shapes up, but it’s promising. The rest of the period is a lot of close-outs and blown-out waves. A spot like this, a rivermouth that’s already inconsistent, is going to be especially fickle with all this cross-onshore energy. Keep your expectations low and your patience high.
This is Rusty, signing off. Stay safe out there.
Short Range ForecastMostly dry. Very mild (max 14°C on Sat morning, min 11°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 14°C on Tue morning, min 11°C on Mon night). Wind will be generally light. | ||||||||||||||||||
Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | ||||||||||||||
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 6 | NW 6 | NW 6 | NW 6 | NW 7 | NW 7 | NW 7 | NW 7 | NW 6 | NW 6 | NW 7 | NW 7 | NW 7 | NW 7 | WNW 12 | WNW 11 | WNW 11 |
Wave Graph | |||||||||||||||||||
97 | 63 | 46 | 93 | 58 | 54 | 124 | 116 | 116 | 155 | 122 | 172 | 284 | 392 | 336 | 277 | 242 | 189 | 179 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | cross-on | glassy | on | cross-on | glassy | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross |
High Tide | 1:05AM1.78m | 2:06PM1.74m | 1:57AM1.60m | 2:40PM1.75m | 2:55AM1.41m | 3:15PM1.74m | 4:03AM1.25m | 3:52PM1.71m | 5:32AM1.14m | 4:36PM1.68m | 7:21AM1.13m | 5:28PM1.65m | |||||||
Low Tide | 7:29AM0.06m | 7:59PM0.43m | 8:06AM0.26m | 8:54PM0.38m | 8:44AM0.47m | 9:52PM0.35m | 9:27AM0.67m | 10:55PM0.32m | 10:17AM0.85m | 00:03AM0.29m | 11:25AM0.99m | 1:12AM0.24m | |||||||
— | 6:26 | — | — | 6:28 | — | — | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:31 | — | — | |
8:10 | — | 8:09 | — | — | 8:08 | — | — | 8:07 | — | — | 8:06 | — | — | 8:05 | — | — | 8:02 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 14 | 14 | 13 | 14 | 14 | 13 | 14 | 13 | 11 | 14 | 13 | 12 | 14 | 14 | 12 | 14 | 13 | 11 |
Feels °C | 12 | 14 | 12 | 13 | 13 | 12 | 13 | 12 | 10 | 8 | 12 | 10 | 12 | 12 | 10 | 11 | 12 | 10 | 8 |
Swell 1 Height (m) Direction Period (s) | NW 7 | SSW 17 | SSW 16 | NW 6 | SSW 16 | SSW 16 | NW 7 | NW 7 | SSW 15 | SSW 14 | SSW 14 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | WNW 12 | WNW 12 | WNW 11 | WNW 11 |
97 | 615 | 499 | 93 | 519 | 463 | 124 | 116 | 334 | 268 | 239 | 357 | 291 | 242 | 309 | 242 | 242 | 173 | 167 | |
Swell 2 Height (m) Direction Period (s) | SSW 18 | NW 7 | WNW 11 | SSW 16 | NW 6 | NW 6 | SSW 15 | SSW 15 | WNW 9 | W 8 | WNW 8 | WNW 15 | WNW 13 | WNW 12 | WNW 12 | SSW 15 | SSW 14 | SSW 14 | SSW 14 |
360 | 63 | 37 | 627 | 58 | 54 | 405 | 334 | 43 | 33 | 19 | 84 | 102 | 172 | 213 | 318 | 220 | 226 | 236 | |
Swell 3 Height (m) Direction Period (s) | SW 14 | WNW 10 | SSE 12 | WNW 10 | WNW 10 | WNW 9 | W 8 | W 9 | S 11 | SSW 18 | SSW 18 | NW 11 | SSW 13 | SW 20 | SW 21 | W 21 | SW 19 | SW 19 | SW 20 |
214 | 35 | 28 | 34 | 32 | 29 | 37 | 40 | 9 | 62 | 62 | 5 | 65 | 16 | 18 | 9 | 55 | 58 | 15 | |
Wind waves Height (m) Direction Period (s) | — | — | NW 6 | — | — | — | — | — | NW 7 | NW 7 | NW 6 | NW 6 | NW 7 | NW 7 | NW 7 | NW 7 | NW 7 | NW 7 | NW 7 |
— | — | 46 | — | — | — | — | — | 116 | 155 | 122 | 172 | 284 | 392 | 336 | 277 | 123 | 189 | 179 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 147 | 72 | 0 | 73 | 42 | 0 | 190 | 291 | 13 | 171 | 72 | 13 | 116 | 291 | 13 | 171 | 95 | 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.











