Surf Forecasts:
Navarro Rivermouth surf forecast from 1 Sep 2026:
- Best quality surf: Thursday 3 Sep, 8PM (local time) - 7.5ft (2.3m), 12s period, NW swell with glassy winds.
- Most powerful swell: Friday 4 Sep, 2AM (local time) - 8ft (2.5m), 12s period, NW swell with 1,805 kJ wave energy.
- Next surfable swell (1★+): Tuesday 1 Sep, 11PM (local time) - 3.5ft (1.0m), 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 Tuesday (Sep 01) at 11PM. The primary swell is predicted to be 1.0m and 10s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Navarro Rivermouth in the next 16 days are 2.5m 12s and forecast to arrive on Friday (Sep 04) at 2AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 16s period and expected on Saturday (Sep 05) at 5AM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Tue 1st Sep) | 3.5ft (1.0m) 10s |
| Best Surf | 8PM (Thu 3rd Sep) | 7.5ft (2.3m) 12s |
| Most Powerful | 2AM (Fri 4th Sep) | 8ft (2.5m) 12s |
Table - best surf conditions forecast for Navarro Rivermouth over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s talk about what’s on the table for the next couple of weeks at Navarro Rivermouth.
We’re looking at a pretty frustrating start. The first few days are a write-off. Tuesday the 1st and Wednesday the 2nd are all poor surf conditions with cross-shore or cross-onshore winds and weak, messy energy. The combined swell energy is in the low hundreds (109 to 397) – not enough to get excited about, and the wind is just ruining what little shape there is.
Thursday the 3rd sees a jump in size, with swell hitting 6 ft to 7 ft from the WNW/NW, and the wave energy climbs into the 500s and over 1000 (528 to 1084). But the wind is still cross-on, and the forecast calls it marginal. It’s not gonna be pretty. Friday the 4th is similar, with 7 ft from the NW dropping to 6 ft, but those cross-onshore winds are still there making it choppy. Saturday the 5th and Sunday the 6th are small, below 4 ft, and messy.
We’ve got a real gap here. It’s not until Monday the 8th that we start to see something worth looking at. Monday morning the 8th has 8 ft from the NW, and 8 ft in the afternoon. The wind is light cross-on, but the swell period is only 9 seconds, so it’s a bit short and won’t hold shape well. The energy is strong (974 and 816), but with the wind and short period, it’s only marginal.
Now, here’s the standout. On Thursday the 10th, we get a moment of glass. The afternoon shows 5 ft of NW swell with a 12-second period, and the wind goes glassy with a slight air. The combined energy is 593 – moderate. The wind is glassy, so the surface will be clean. This is the best wave of the first week. The swell direction is NW, which is the optimum for this river-mouth break. The water is running about 53°F, which is much colder than normal for the time of year – a solid 5°F cooler, so you’ll want a thick wetsuit.
The following week is a mixed bag. Friday the 11th has a 16-second period swell from the SW, but it’s only 3 ft and cross-on wind pushes it to marginal. Saturday the 12th is small and poor. The next real blip is the final day of the forecast. Wednesday the 16th. The morning sees 10 ft from the NW with an 8-second period and light cross-on wind – that’s a lot of water and a short period, making it pretty chaotic. The afternoon though, that’s a heavy warning. We’re looking at 15 ft of NW swell, glassy wind, and a massive combined energy of 3246. The wind is perfect, but it’s predicted to be too big for this break. Only for experts, and even then, it’s on the edge.
For a novice, this is a tough run. The break is inconsistent and often crowded. The best bet for a clean, workable wave is the Thursday afternoon the 10th – that glassy 5 ft NW swell. It’s the only time in the period where the stars align for a decent, clean session.
Rusty.
Short Range ForecastModerate rain (total 12mm), heaviest on Wed night. Very mild (max 16°C on Tue morning, min 12°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 15°C on Fri morning, min 11°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | |||||||||||||||
AM | PM | 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 11 | NW 10 | NW 10 | SW 18 | WNW 9 | W 8 | WNW 10 | NW 11 | NW 12 | NW 11 | NW 10 | NW 10 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | NW 8 | NW 8 | NW 6 | NW 8 |
Wave Graph | |||||||||||||||||||||
71 | 167 | 154 | 246 | 135 | 301 | 528 | 1084 | 1805 | 972 | 634 | 373 | 206 | 206 | 220 | 109 | 107 | 69 | 42 | 203 | 690 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | off | cross | cross | cross-off | cross | cross-on | cross-off | cross-on | cross-on | cross-off | on | cross-on | glassy | on | cross-on | cross-off | cross-on | cross-on | cross-off |
High Tide | 2:26PM1.80m | 3:40AM1.27m | 3:08PM1.82m | 5:08AM1.18m | 4:00PM1.83m | 6:50AM1.19m | 5:03PM1.83m | 8:14AM1.27m | 6:14PM1.84m | 9:11AM1.37m | 7:27PM1.87m | 9:55AM1.47m | 8:34PM1.91m | ||||||||
Low Tide | 8:02AM0.55m | 9:07PM0.20m | 8:43AM0.72m | 10:10PM0.14m | 9:34AM0.88m | 11:23PM0.09m | 10:47AM1.00m | 00:40AM0.02m | 12:15PM1.04m | 1:50AM-0.05m | 1:36PM0.98m | 2:50AM-0.12m | 2:42PM0.86m | 3:40AM-0.14m | |||||||
6:43 | — | — | 6:43 | — | — | 6:45 | — | — | 6:46 | — | — | 6:46 | — | — | 6:47 | — | — | 6:48 | — | — | |
— | 7:45 | — | — | 7:44 | — | — | 7:43 | — | — | 7:40 | — | — | 7:38 | — | — | 7:37 | — | — | 7:36 | — | |
mm | — | — | 1 | — | — | 8 | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 16 | 15 | 16 | 16 | 15 | 15 | 15 | 13 | 15 | 15 | 13 | 14 | 15 | 12 | 14 | 14 | 12 | 15 | 15 | 17 |
Feels °C | 15 | 13 | 13 | 13 | 12 | 13 | 15 | 14 | 14 | 13 | 13 | 12 | 12 | 12 | 11 | 13 | 12 | 11 | 13 | 12 | 14 |
Swell 1 Height (m) Direction Period (s) | SSW 13 | NW 10 | NW 10 | WNW 9 | WNW 9 | W 8 | WNW 10 | NW 11 | NW 12 | NW 11 | NW 10 | NW 10 | NW 9 | NW 9 | NW 9 | SSW 15 | SSW 14 | SSW 14 | SSE 16 | SSE 16 | SSE 14 |
198 | 167 | 150 | 145 | 135 | 301 | 528 | 1084 | 1805 | 972 | 634 | 373 | 206 | 206 | 220 | 405 | 330 | 325 | 348 | 348 | 213 | |
Swell 2 Height (m) Direction Period (s) | NW 7 | SSW 13 | SSW 13 | SW 18 | SSW 12 | SW 16 | SSW 19 | S 12 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | NW 9 | NW 9 | SSE 16 | SSW 14 | SSW 14 | SSW 13 |
38 | 198 | 151 | 246 | 87 | 216 | 455 | 141 | 553 | 651 | 563 | 651 | 620 | 546 | 519 | 109 | 107 | 291 | 229 | 217 | 158 | |
Swell 3 Height (m) Direction Period (s) | NW 11 | S 12 | SW 18 | SSW 12 | SW 16 | SSW 13 | S 13 | SSW 20 | S 11 | S 13 | SSW 12 | SSW 11 | S 11 | SSW 12 | SSW 11 | NW 5 | SSE 15 | NW 8 | NW 8 | NW 12 | SSW 19 |
71 | 73 | 154 | 89 | 130 | 60 | 117 | 253 | 121 | 119 | 160 | 135 | 86 | 109 | 66 | 35 | 169 | 69 | 42 | 37 | 37 | |
Wind waves Height (m) Direction Period (s) | — | — | SE 2 | S 3 | SSW 4 | SSE 10 | — | — | — | — | — | — | — | — | — | — | NW 5 | WNW 4 | NW 5 | NW 6 | NW 8 |
— | — | 1 | 6 | 15 | 170 | — | — | — | — | — | — | — | — | — | — | 28 | 13 | 17 | 203 | 690 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 23 | 42 | 0 | 73 | 44 | 23 | 23 | 23 | 0 | 147 | 290 | 0 | 33 | 116 | 0 | 116 | 13 | 0 | 98 | 95 | 0 |
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.











