Navarro Rivermouth Surf Break

Lat Long: 39.19° N 123.76° W

Navarro Rivermouth Surf Forecast and Surf Report

Issued: 10 pm 21 Aug 2026 (local time)

Forecast update in  hr  min

Today's Navarro Rivermouth sea temperature is
13.6°C
1.0° 

Navarro Rivermouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Navarro Rivermouth surf forecast from 22 Aug 2026:

  • Best quality surf: Sunday 23 Aug, 8AM (local time) - 6ft (1.9m), 7s period, NW swell with glassy winds.
  • Most powerful swell: Sunday 23 Aug, 8PM (local time) - 6.5ft (2.0m), 8s period, NW swell with 458 kJ wave energy.
  • Next surfable swell (1★+): Saturday 22 Aug, 5AM (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 Saturday (Aug 22) at 5AM. 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 2.0m 8s and forecast to arrive on Sunday (Aug 23) at 8PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 16s period and expected on Thursday (Aug 27) at 2PM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Sat 22nd Aug)2ft (0.6m) 10s
Best Surf 8AM (Sun 23rd Aug)6ft (1.9m) 7s
Most Powerful 8PM (Sun 23rd Aug)6.5ft (2.0m) 8s

Table - best surf conditions forecast for Navarro Rivermouth over the next 16 days.


The Lowdown

G’day, Rusty here, and I’ve gotta level with you about what’s coming up in the 16-day outlook. This is a tough stretch for our region. The only spot on the cards is Navarro Rivermouth, and frankly, it’s a river-mouth setup that’s inconsistent and rarely breaks properly. The pattern makes it feel like a bit of a waiting game.

The window kicks off on Saturday, 22 August. That morning there’s a tiny 2ft swell from the WNW, with a period of 10 seconds. The combined energy is weak (102), and it’s poor—cross-onshore wind has it choppy and messy. Saturday afternoon, the swell drops to 1ft from the SW, longer period (17 seconds), energy picks up just a little (202), but still poor with a moderate breeze. It’s barely surfable.

Sunday, 23 August, sees a jump in size: 5ft in the morning, NW direction, but that short period of 7 seconds kills the shape, and energy is moderate (508). It remains cross-onshore and poor. Sunday afternoon gets to 6ft from the NW, still 8 seconds on the period, energy at 530, but the wind doesn’t let up. Monday the 24th and Tuesday the 25th are marginal at best—swells up to 3ft, long periods (16-18 seconds), but with light cross-onshore or onshore winds, and the energy sits around the 300-400 range. Not great.

The middle of the week, Wednesday 26th through Friday 28th, stays in a rut: poor conditions, cross-onshore winds around 9-12 mph, swell heights from 2ft up to 6ft, and short periods (6-7 seconds). The energy fluctuates but never gets good. Saturday 29th and Sunday 30th offer the biggest swells yet—7ft on Saturday afternoon from the NW, with an 8-second period and strong energy (553)—but again, cross-onshore wind and poor quality.

Monday 31st through to Wednesday 2nd September, the trend continues with waves up to 10ft from the NW, now with longer periods (8 seconds) and moderate to strong energy (up to 1294). Still, the wind is cross-onshore and the reports are poor to marginal. The river mouth setup is choppy and tricky.

Now, the one true standout I can see—and I’m being honest here—is Friday morning, 4 September. Navarro Rivermouth sees a solid 12ft swell from the NW, period bumping to 10 seconds. The combined energy is very strong at 2078. However, that’s way too big for a beginner spot, and with a moderate cross-onshore breeze, it’s really only for the experts. The wind and tide are said to be favourable, but the swell is predicted to be too big for this break. So if you’re a seasoned charger and you know this rivermouth, it might be your moment.

Saturday 5th September and Sunday 6th September taper off, with 8ft down to 6ft swells, period holding at 10 seconds, and light onshore winds giving marginal conditions.

This first recommendation came on Saturday, 22 August, and there are no gaps of several days with no recommendations—just a continuous run of poor to marginal surf.

Crowds are listed as “often” here, so even when it’s poor, expect company. Water temperature is about average for the time of year, nothing unusual.

So to wrap it up: the best on offer is the morning of 4 September for experts only, but the whole stretch is a battle against wind and choppy conditions. For everyone else, it might be worth waiting for a change in forecasts.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 16°C on Sat afternoon, min 12°C on Fri night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Very mild (max 16°C on Thu afternoon, min 11°C on Tue night). Wind will be generally light.

Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
0
0
2
0
0
2
0
1
2
1
0
0
0
0
2
0
0
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.6
WNW
10
0.6
WNW
10
0.4
SW
17
1.6
NW
7
0.6
SW
19
1.9
NW
8
1.7
NW
8
0.6
SW
18
0.6
SW
18
0.6
SW
17
0.8
SW
16
0.6
SW
16
0.6
SW
16
0.6
SW
16
0.6
SW
16
1.6
NW
6
1.4
NW
6
1.8
NW
6
1.6
NW
6
Wave Graph
Metric surfscale
Energy kJ
80
77
77
240
277
413
326
255
192
235
326
214
161
203
201
194
152
251
220
Wind (km/h)
10
NE
15
NW
20
NNW
5
N
15
WNW
15
NW
5
NNE
15
SW
10
SW
0
S
10
W
15
NW
10
NNW
15
WNW
20
NW
5
NNE
15
NW
20
NNW
5
NNE
Wind State
cross-off
cross-on
cross-on
glassy
cross-on
cross-on
glassy
cross-on
cross-on
glassy
on
cross-on
cross
cross-on
cross-on
cross-off
cross-on
cross-on
cross-off
High Tide
9:45AM1.27m
7:27PM1.67m
10:24AM1.34m
8:22PM1.72m
10:55AM1.38m
9:11PM1.77m
11:21AM1.42m
9:55PM1.81m
11:45AM1.47m
10:37PM1.82m
12:08PM1.52m
11:18PM1.80m
Low Tide
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
4:50PM0.79m
5:25AM-0.01m
5:25PM0.69m
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:33
6:35
6:35
6:35
6:37
6:37
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:01
8:00
7:59
7:58
7:55
7:54
7:52
 mm
Temp °C
13
15
16
14
16
16
13
15
15
14
14
14
12
14
14
13
15
16
14
Feels °C
12
12
13
13
14
14
14
13
13
15
13
12
10
12
11
12
13
13
13
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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.

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