Navarro Rivermouth Surf Break

Lat Long: 39.19° N 123.76° W

Navarro Rivermouth Surf Forecast and Surf Report

Issued: 10 pm 18 Aug 2026 (local time)

Forecast update in  hr  min

Today's Navarro Rivermouth sea temperature is
13.8° C
0.7° 

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 19 Aug 2026:

  • Best quality surf: Thursday 20 Aug, 5AM (local time) - 3ft (0.9m), 12s period, WNW swell with glassy winds.
  • Most powerful swell: Wednesday 19 Aug, 5PM (local time) - 6.5ft (2.0m), 8s period, NW swell with 435 kJ wave energy.
  • Next surfable swell (1★+): Thursday 20 Aug, 5AM (local time) - 3ft (0.9m), 12s 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 Thursday (Aug 20) at 5AM. The primary swell is predicted to be 0.9m and 12s period with a secondary swell of 1.5m and 7s. 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 2.0m 8s and forecast to arrive on Wednesday (Aug 19) at 5PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 14s period and expected on Wednesday (Aug 19) at 11AM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Thu 20th Aug)3ft (0.9m) 12s
Best Surf 5AM (Thu 20th Aug)3ft (0.9m) 12s
Most Powerful 5PM (Wed 19th 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 be straight with you – the next two weeks at Navarro Rivermouth are looking pretty grim. This is a river-mouth break that's fairly exposed to the swell, but the problem is the wind. We've got a constant cross-onshore breeze that's just chopping everything up. Most days are scoring a big fat zero, so we're looking at a long stretch of poor surf. There's a bit of a gap at the start with nothing worth paddling out for, and honestly, it's not until the very end of the forecast that we get a glimmer of something.

For the first week, from Wednesday the 19th of August through to the end of the month, it's all poor surf conditions. The wind is a persistent cross-onshore from the NW or WNW, and the swell is a mix of small, weak windswell and short-period NW groundswell. The combined wave energy is mostly in the moderate range, like 591 on Wednesday morning, but it's just messy. The water temperature anomaly is about average for the time of year, nothing special there.

Now, the standout – and I use that term loosely – is the afternoon of Wednesday the 2nd of September. We've got a 12 ft NW swell rolling in, with a 9-second period, and the combined energy is a massive 1734, which is strong to very strong. The wind is a light cross-onshore from the SW, which is about as good as it gets here. But here's the catch: this swell is too big for this break, and it's only recommended for experts. The forecast says it's too big for the break, so only the most experienced and heaviest of souls should even consider it. It's a long way off, so treat this as a promising but less certain possibility.

For the rest of the second week, from the 27th of August to the 3rd of September, it's more of the same – poor to marginal surf with that relentless cross-onshore wind. The swell sizes bounce around from 2 ft to 8 ft, but the wind never lets up. The few spots that get a 'marginal' rating are still not worth getting excited about.

So, in short, it's a tough run. Navarro Rivermouth is an inconsistent spot, and this stretch proves it. If you're desperate, keep an eye on that 2nd of September, but don't hold your breath. This blank run is pretty normal for the area, so don't be too surprised. Keep praying for a change in the wind.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 14°C on Wed morning, min 11°C on Tue night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Very mild (max 15°C on Sat morning, min 11°C on Fri night). Wind will be generally light.

Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
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
1
0
0
2
0
0
0
0
0
1
0
1
1
0
1
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.7
NW
7
1.9
NW
8
2
NW
8
1.7
NW
7
0.9
WNW
12
0.9
WNW
11
0.8
WNW
11
0.7
WNW
11
0.4
SW
18
0.6
WNW
10
0.6
WNW
10
1.6
NW
7
1.6
NW
7
1.6
NW
8
1.6
NW
8
0.6
SW
18
0.6
SW
18
0.6
SW
18
0.6
SW
17
Wave Graph
Metric surfscale
Energy kJ
277
403
435
271
237
173
161
117
115
80
75
213
277
327
335
250
255
192
183
Wind (km/h)
10
NNW
15
WNW
15
NW
10
NW
15
NW
15
NW
5
WNW
10
WNW
20
NW
5
NNW
15
NW
15
NW
5
NNW
10
WSW
10
SW
5
S
15
SW
10
WSW
5
ESE
Wind State
cross
cross-on
cross-on
cross-on
cross-on
cross-on
glassy
cross-on
cross-on
cross
cross-on
cross-on
cross
cross-on
cross-on
cross
cross-on
cross-on
glassy
High Tide
5:32AM1.14m
4:36PM1.68m
7:21AM1.13m
5:28PM1.65m
8:50AM1.20m
6:27PM1.65m
9:45AM1.27m
7:27PM1.67m
10:24AM1.34m
8:22PM1.72m
10:55AM1.38m
9:11PM1.77m
Low Tide
10:55PM0.32m
10:17AM0.85m
00:03AM0.29m
11:25AM0.99m
1:12AM0.24m
12:44PM1.05m
2:13AM0.18m
1:54PM1.05m
3:04AM0.11m
2:49PM1.01m
3:47AM0.05m
3:34PM0.95m
4:23AM0.01m
clear
clear
part cloud
clear
part cloud
part cloud
cloud
cloud
part cloud
part cloud
clear
part cloud
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:31
6:31
6:33
6:33
6:35
6:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:06
8:05
8:02
8:01
8:00
7:59
7:58
 mm
Temp °C
13
14
14
13
14
14
12
14
14
12
15
15
13
15
15
13
14
14
12
Feels °C
13
12
11
12
12
11
10
13
11
10
13
13
13
13
13
13
12
12
12
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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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