
Surf Forecasts:
Navarro Rivermouth surf forecast from 3 Aug 2026:
- Best quality surf: Saturday 8 Aug, 8PM (local time) - 11ft (3.5m), 9s period, NW swell with cross-onshore winds.
- Most powerful swell: Sunday 9 Aug, 8PM (local time) - 13ft (4.0m), 10s period, NW swell with 2,872 kJ wave energy.
- Next surfable swell (1★+): Monday 3 Aug, 8AM (local time) - 10ft (3.0m), 10s 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 Monday (Aug 03) at 8AM. The primary swell is predicted to be 3.0m and 10s 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 4.0m 10s and forecast to arrive on Sunday (Aug 09) 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 0.7m 17s period and expected on Saturday (Aug 08) at 8AM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Mon 3rd Aug) | 10ft (3.0m) 10s |
| Best Surf | 8PM (Sat 8th Aug) | 11ft (3.5m) 9s |
| Most Powerful | 8PM (Sun 9th Aug) | 13ft (4.0m) 10s |
Table - best surf conditions forecast for Navarro Rivermouth over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s see what we’ve got coming up on the calendar. It’s a bit of a mixed bag, but I’ll break it down for you straight.
We’re focusing on the Navarro Rivermouth, a river mouth setup that’s fairly exposed to the swell but inconsistent. It’s a beginner-friendly spot, but don’t expect it to be firing all the time. The opening days of the period are right off the bat, starting Monday, August 3rd, with some size but not much quality.
Monday morning, August 3rd, we’ve got a solid 8 ft NW swell rolling in with a 10-second period, and the combined energy is pumping at (1307). The wind is onshore from the WNW though, so it’s going to be a bit messy. Not the best for a paddle. The afternoon drops to 8 ft, wind lightens to a 3 mph westerly, but still onshore. It’s marginal.
Tuesday, August 4th, is a bit of a tease. The morning is crossed off with a 9 mph SW wind and 6 ft NW swell – poor. But then Tuesday afternoon hits a sweet spot. The wind goes glassy, flat calm, with 6 ft of NW swell and a 9-second period. The energy is moderate (543). That’s your cleanest window in the early part of the week. The water temp is about average for this time of year, so you won’t be freezing.
After that, it gets rough. Wednesday through the end of the first week is mostly cross-onshore winds with dropping swell, and the conditions are poor. Thursday morning, August 6th, the swell drops to 2 ft with a long 13-second period from the SW, but it’s onshore and weak – not worth it.
The real story here is the massive swell that arrives the second weekend. Sunday, August 9th afternoon is a standout, but it’s for experts only. We’re looking at a 13 ft NW swell with a 10-second period, and the combined energy is a huge (2686). The wind is a gentle cross-onshore, but the report says the swell is predicted to be too big for this break. That’s a heavy, powerful, and dangerous day. If you’re not a seasoned pro, stay on the beach.
Monday, August 10th, stays big at 10 ft, but the wind is onshore, keeping it messy. The following week sees the swell drop back to the 5 to 7 ft range, but the wind is consistently cross-onshore or onshore. There’s a clean window on Wednesday, August 12th afternoon with a 6 ft NW swell, a 9-second period, and variable light wind, but it’s only marginal.
The last few days of the forecast, from August 16th, the swell fades to tiny 2 ft to 2 ft with very long periods (15-16 seconds), but the wind is messy. That’s a lake, not a surf.
So, the best on offer is Tuesday afternoon, August 4th for the glassy conditions with 6 ft surf, and the Sunday, August 9th afternoon for the big, challenging heavy stuff if you’ve got the skills. There’s a big gap of poor-to-marginal conditions from Wednesday, August 5th through Saturday, August 8th.
Stay safe out there.
Rusty.
Short Range ForecastMostly dry. Very mild (max 16°C on Mon morning, min 11°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 15°C on Thu afternoon, min 11°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | ||||||||||||||
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 10 | NW 10 | NW 10 | NW 9 | NW 9 | NW 9 | NW 8 | NW 9 | NW 8 | NW 8 | SW 13 | NW 8 | NW 7 | NW 7 | NW 8 | NW 8 | NW 8 | NW 9 | NW 9 |
Wave Graph | |||||||||||||||||||
2238 | 1264 | 1048 | 891 | 580 | 465 | 343 | 343 | 283 | 196 | 88 | 104 | 189 | 237 | 395 | 594 | 813 | 1448 | 1443 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | on | on | cross | cross-on | glassy | glassy | cross-on | cross-on | glassy | on | cross-on | glassy | cross-on | cross-on | cross | cross-on | cross-on | cross |
High Tide | 2:25AM1.44m | 3:19PM1.69m | 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 | |||||||
Low Tide | 8:37PM0.60m | 8:36AM0.27m | 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 | ||||||
— | 6:16 | — | — | 6:16 | — | — | 6:18 | — | — | 6:18 | — | — | 6:20 | — | — | 6:20 | — | — | |
8:25 | — | 8:24 | — | — | 8:22 | — | — | 8:22 | — | — | 8:21 | — | — | 8:20 | — | — | 8:19 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 16 | 16 | 14 | 15 | 15 | 13 | 14 | 14 | 13 | 13 | 15 | 13 | 15 | 15 | 13 | 15 | 15 | 13 |
Feels °C | 11 | 14 | 14 | 14 | 12 | 13 | 13 | 11 | 12 | 13 | 11 | 13 | 12 | 13 | 12 | 13 | 12 | 11 | 11 |
Swell 1 Height (m) Direction Period (s) | NW 10 | NW 10 | NW 10 | NW 9 | NW 9 | NW 9 | NW 8 | NW 9 | NW 8 | NW 8 | NNW 8 | NW 8 | NW 7 | SSW 18 | SSW 19 | SW 13 | SSW 18 | SSW 18 | SSW 16 |
1869 | 1264 | 1048 | 891 | 580 | 465 | 343 | 343 | 283 | 196 | 76 | 104 | 189 | 126 | 203 | 82 | 240 | 240 | 201 | |
Swell 2 Height (m) Direction Period (s) | SW 13 | SW 13 | SW 13 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | WNW 8 | SW 13 | SW 13 | SW 13 | SW 13 | SW 16 | SW 12 | SW 12 | SSW 12 |
44 | 44 | 43 | 65 | 85 | 78 | 34 | 73 | 99 | 95 | 64 | 85 | 83 | 57 | 79 | 130 | 37 | 22 | 56 | |
Swell 3 Height (m) Direction Period (s) | SW 18 | SW 16 | SW 16 | SW 12 | SW 12 | SW 12 | SSW 14 | SSW 11 | SSW 11 | S 13 | SW 13 | NW 8 | SW 18 | S 12 | S 11 | SSW 19 | SSW 13 | S 11 | SW 23 |
49 | 43 | 41 | 38 | 37 | 36 | 39 | 24 | 12 | 30 | 88 | 18 | 81 | 11 | 10 | 74 | 18 | 9 | 21 | |
Wind waves Height (m) Direction Period (s) | NW 10 | — | — | — | — | — | — | — | — | — | — | — | — | NW 7 | NW 8 | NW 8 | NW 8 | NW 9 | NW 9 |
2238 | — | — | — | — | — | — | — | — | — | — | — | — | 237 | 395 | 594 | 813 | 1448 | 1443 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 13 | 73 | 20 | 13 | 23 | 0 | 0 | 44 | 20 | 0 | 190 | 95 | 0 | 147 | 42 | 13 | 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.











