
Surf Forecasts:
Navarro Rivermouth surf forecast from 8 Aug 2026:
- Best quality surf: Monday 10 Aug, 8AM (local time) - 8ft (2.5m), 9s period, NW swell with glassy winds.
- Most powerful swell: Sunday 9 Aug, 8PM (local time) - 10ft (3.0m), 9s period, NW swell with 1,473 kJ wave energy.
- Next surfable swell (1★+): Monday 10 Aug, 8AM (local time) - 8ft (2.5m), 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 Monday (Aug 10) at 8AM. The primary swell is predicted to be 2.5m and 9s 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 3.0m 9s 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 0.8m 16s period and expected on Sunday (Aug 09) at 5AM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Mon 10th Aug) | 8ft (2.5m) 9s |
| Best Surf | 8AM (Mon 10th Aug) | 8ft (2.5m) 9s |
| Most Powerful | 8PM (Sun 9th Aug) | 10ft (3.0m) 9s |
Table - best surf conditions forecast for Navarro Rivermouth over the next 16 days.
The Lowdown
Alright, let’s get into it. Looking at the next 16 days starting from August 7th, the pattern is grim. The water temp is sitting at 57°, which is about 0.5° cooler than usual for this time of year, so pretty average. But the surf? It’s a long, hard wait.
The first week is a write-off. For the first several days, from August 7th right through until the morning of the 12th, it’s a no-go. The swell is building, sure, but it’s all cross-onshore wind and short-period, weak energy. The wind is coming from the NW and WNW at 9 to 12 mph, just chopping everything up. The combined swell energy is weak to moderate (195 to 277), and the period is a paltry 6 to 7 seconds. The waves are junky and unsurfable. Even when the swell hits 8 ft to 10 ft on the 9th and 10th, it’s junk. That’s too big for beginners anyway, and with the wind ruining it, it’s just a mess. Honestly, this setup looks more interesting for kite surfing than paddle surfing.
Then, from the 12th to the 14th, things get slightly less bad, but still not good. The wind shifts to light breezes, sometimes coming onshore, sometimes cross-onshore, and the swell drops slightly. The combined energy gets into the moderate range (654 to 1238), but the period is still short at 8 to 9 seconds. The forecast calls it “marginal,” and I’m feeling generous calling it that. The tide is likely a factor, making it a frustrating gamble. The only real standout in this run is the Tuesday morning, the 12th, when the wind is light and onshore and the swell is 8 ft from the NW with a 9-second period. The energy is solid (1089), but the break is inconsistent and with that wind, it's still a grinder.
The second week is a total washout. From the 15th onward, the swell drops off a cliff. The combined energy falls to weak levels (22 to 119), and the period is a short 6 to 7 seconds. The waves are tiny, all 2 ft to 3 ft, and the wind is cross-onshore and choppy. It’s flat. There is a blip on the 19th, Wednesday morning, when a long-period groundswell (13 seconds) from the WNW shows up. The energy spikes to 1128, but the swell is only 4 ft to 5 ft, and it’s cross-onshore. This is a long-period swell, which at a river mouth can be a bit too straight, and the wind will still mess it up. It’s a tease, but not a day worth paddling out for.
So, the bottom line: there are no good surf options in this 16-day window. The whole period is a struggle. The only thing that even registers as a "maybe" is the Tuesday morning on August 12th, but even that’s a stretch. For a spot that’s inconsistent and rarely breaks well, this dry run is pretty normal. We’ll have to wait for the forecast to change.
Stay patient, Rusty.
Short Range ForecastMostly dry. Very mild (max 16°C on Sat morning, min 11°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 16°C on Wed afternoon, min 12°C on Mon night). Wind will be generally light. | ||||||||||||||||||
Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | ||||||||||||||
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 8 | NW 8 | NW 8 | NW 9 | NW 8 | NW 9 | NW 9 | NW 8 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | NW 10 | NW 10 | NW 9 | NW 9 |
Wave Graph | |||||||||||||||||||
255 | 277 | 559 | 865 | 899 | 1104 | 1084 | 1019 | 901 | 854 | 798 | 958 | 1108 | 1094 | 1055 | 1162 | 913 | 668 | 328 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross | on | cross-on | glassy | on | on | cross | cross-on | cross-on | glassy |
High Tide | 9:31AM1.24m | 7:33PM1.98m | 10:24AM1.35m | 8:36PM2.04m | 11:07AM1.45m | 9:36PM2.09m | 11:46AM1.53m | 10:31PM2.09m | 12:23PM1.60m | 11:23PM2.05m | 12:59PM1.66m | 00:14AM1.94m | |||||||
Low Tide | 2:07AM-0.06m | 1:25PM1.00m | 3:07AM-0.20m | 2:35PM0.97m | 4:00AM-0.29m | 3:37PM0.89m | 4:48AM-0.34m | 4:32PM0.79m | 5:31AM-0.32m | 5:25PM0.68m | 6:12AM-0.24m | 6:16PM0.58m | |||||||
— | 6:20 | — | — | 6:22 | — | — | 6:22 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | |
8:20 | — | 8:19 | — | — | 8:17 | — | — | 8:16 | — | — | 8:15 | — | — | 8:14 | — | — | 8:13 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 16 | 16 | 14 | 16 | 15 | 14 | 16 | 15 | 13 | 14 | 15 | 13 | 15 | 16 | 13 | 15 | 15 | 14 |
Feels °C | 12 | 14 | 13 | 12 | 13 | 11 | 12 | 14 | 13 | 12 | 12 | 13 | 11 | 14 | 15 | 13 | 14 | 13 | 15 |
Swell 1 Height (m) Direction Period (s) | SSW 13 | NW 7 | SSW 18 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | NW 9 | NW 9 | SSW 13 | NW 9 | SSW 14 | SSW 18 | NW 9 | NW 9 | NW 10 | NW 10 | NW 9 | NW 9 |
111 | 277 | 240 | 226 | 263 | 191 | 167 | 828 | 901 | 102 | 798 | 116 | 209 | 1094 | 1055 | 1162 | 913 | 668 | 328 | |
Swell 2 Height (m) Direction Period (s) | SW 16 | SSW 18 | SW 12 | SSW 12 | SW 12 | SSW 12 | SW 21 | SSW 14 | SSW 14 | SW 20 | SSW 13 | SW 18 | SW 14 | SW 18 | SSW 16 | SSW 16 | SW 16 | SW 16 | SW 16 |
130 | 240 | 35 | 56 | 37 | 28 | 72 | 165 | 156 | 134 | 102 | 50 | 52 | 152 | 179 | 173 | 203 | 251 | 245 | |
Swell 3 Height (m) Direction Period (s) | SSW 19 | SW 12 | W 13 | SW 23 | SW 23 | SW 21 | SSW 11 | SW 20 | SW 20 | SSW 16 | SSW 19 | SSW 19 | S 12 | SSW 13 | SSW 13 | SSW 14 | S 11 | S 11 | S 11 |
74 | 37 | 14 | 21 | 21 | 18 | 12 | 65 | 98 | 25 | 145 | 72 | 26 | 66 | 67 | 104 | 9 | 21 | 20 | |
Wind waves Height (m) Direction Period (s) | NW 7 | — | NW 8 | NW 8 | NW 8 | NW 9 | NW 8 | NW 9 | — | NW 8 | — | NW 9 | NW 9 | — | — | — | — | — | — |
255 | — | 559 | 865 | 899 | 1104 | 1084 | 1019 | — | 854 | — | 958 | 1108 | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 95 | 13 | 290 | 636 | 42 | 116 | 291 | 13 | 415 | 95 | 13 | 190 | 52 | 0 | 44 | 33 | 23 | 23 | 20 |
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.











