Third Reef Surf Break

Lat Long: 40.03° N 124.08° W

Third Reef Surf Forecast and Surf Report

Issued: 10 pm 09 Aug 2026 (local time)

Forecast update in  hr  min

Today's Third Reef sea temperature is
14.0° C
0.1° 

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


Third Reef surf forecast from 10 Aug 2026:

  • Best quality surf: Tuesday 11 Aug, 2AM (local time) - 7ft (2.1m), 9s period, NW swell with cross-offshore winds.
  • Most powerful swell: Thursday 13 Aug, 2AM (local time) - 7.5ft (2.3m), 9s period, NW swell with 815 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 11 Aug, 2AM (local time) - 7ft (2.1m), 9s period with NW swell.

Best Forecast Surf Conditions for Third Reef this week:

The surf forecast for Third Reef over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 11) at 2AM. The primary swell is predicted to be 2.1m and 9s period with a secondary swell of 1.6m and 9s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Third Reef in the next 16 days are 2.3m 9s and forecast to arrive on Thursday (Aug 13) 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 0.5m 13s period and expected on Monday (Aug 10) at 11PM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Tue 11th Aug)7ft (2.1m) 9s
Best Surf 2AM (Tue 11th Aug)7ft (2.1m) 9s
Most Powerful 2AM (Thu 13th Aug)7.5ft (2.3m) 9s

Table - best surf conditions forecast for Third Reef over the next 16 days.


The Lowdown

Alright, let’s get real about the next couple of weeks at Third Reef. It’s a mixed bag, and honestly, for the first stretch, you’re going to be scratching for anything decent. The opening days are pretty average, but there’s a light at the end of the tunnel if you’re willing to wait it out.

The early part of the week is looking messy. Monday the 10th has some cross-onshore wind and a bit of chop, with a 7ft NW swell but short 8-second period. It’s not going to be pretty. Tuesday is similar, with conditions actually rating as poor. The wind stays up and the swell drops slightly to 5ft. Wednesday looks worse with moderate cross-onshore winds making it choppy. Thursday and Friday bring smaller surf, but the wind lightens up, which helps. It’s still marginal, but at least it’s not a washing machine.

The first real standout comes on Saturday the 15th in the afternoon. The swell drops to a clean 3ft, but the period jumps up to 16 seconds and the wind goes glassy. That’s the kind of change that makes you sit up. The wave energy is moderate at 630, but it's clean. This is the best of the first week and it’s not even close. It’s a real window of opportunity, but it’s short-lived.

Sunday the 16th holds similar swell but the glass is gone, with light cross-onshore winds, making it just okay. Then from Monday the 17th through Wednesday the 19th, it’s a poor run. The wind is up, the surf is small and messy, and honestly, you might be better off doing something else. The swell energy is weak during this period.

Now, here’s the thing. The back half of the forecast has a more promising push, but it’s far out, so don't book your flights yet. Around Thursday the 20th, a new WNW swell starts to show, and while the morning is still cross-onshore, the afternoon turns glassy again with a 5ft swell. That’s a good sign. The following morning, Friday the 21st, looks like the pick of the bunch. We’ve got a 4ft WNW swell, a 10-second period, and light cross-offshore winds. That’s your cleanest, most lined-up window of the whole period. This is a reef break, and it’s exposed to that WNW direction, so it should handle it well. *Third Reef* is fairly consistent, but the real quality is going to be in that Friday morning session. It’s a long way out, though, so treat it as promising, not guaranteed.

After that, it fades. Saturday the 22nd has a small glassy morning with 4ft, but it’s weak. From Sunday the 23rd onward, it’s all downhill. Small, weak, mostly poor surf with light winds. The combined energy drops to weak levels, like 131-331. There’s nothing that will get your heart racing in that final week.

So, here’s the bottom line: the first week is a grind, with that Saturday afternoon looking the best of a bad bunch. The second week has a real window of opportunity around Thursday the 20th and Friday the 21st, but it’s a long-range call. Keep your expectations in check, but don’t write it off entirely.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 20°C on Tue night, min 13°C on Sun night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Very mild (max 19°C on Wed night, min 12°C on Thu night). Wind will be generally light.

Monday
10
Tuesday
11
Wednesday
12
Thursday
13
Friday
14
Saturday
15
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
1
2
4
0
1
2
0
1
4
2
2
3
1
1
3
1
3
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.6
NW
9
2.2
NW
8
1.8
NW
8
2.1
NW
9
1.6
NW
9
1.7
NW
8
1.4
NW
8
1.7
NW
8
1.8
NW
8
2.3
NW
9
1.6
NW
9
1.5
NW
8
1.6
NW
8
1.2
NW
8
0.5
SSW
19
0.7
SSW
18
1
SSW
17
1
SSW
16
1
SSW
16
Wave Graph
Metric surfscale
Energy kJ
412
687
433
695
367
373
260
371
403
815
402
291
333
169
210
280
576
505
493
Wind (km/h)
15
N
15
NW
10
NW
10
N
15
NW
15
NW
15
N
20
NW
15
NNW
10
NNE
10
W
5
NW
10
NNE
10
WSW
5
WNW
10
NNE
15
WNW
5
WNW
10
NNE
Wind State
cross-off
cross-on
cross-on
cross-off
cross-on
cross-on
cross
cross-on
cross-on
cross-off
on
cross-on
cross-off
cross-on
cross-on
cross-off
cross-on
glassy
cross-off
High Tide
8:38PM2.14m
11:04AM1.42m
9:40PM2.20m
11:46AM1.52m
10:37PM2.21m
12:25PM1.62m
11:32PM2.16m
1:02PM1.70m
00:26AM2.05m
1:38PM1.77m
1:18AM1.90m
2:13PM1.81m
2:11AM1.71m
Low Tide
4:13AM-0.33m
3:32PM0.93m
5:03AM-0.38m
4:37PM0.81m
5:48AM-0.37m
5:34PM0.68m
6:30AM-0.30m
6:27PM0.56m
7:09AM-0.16m
7:20PM0.47m
7:46AM0.03m
8:12PM0.41m
clear
clear
part cloud
clear
clear
part cloud
clear
clear
part cloud
clear
part cloud
part cloud
clear
part cloud
part cloud
clear
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:22
6:22
6:24
6:24
6:26
6:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:21
8:19
8:17
8:16
8:15
8:14
8:13
 mm
Temp °C
18
17
16
17
16
17
20
18
17
19
14
14
13
14
14
14
15
15
14
Feels °C
16
15
15
14
13
15
17
15
15
17
13
13
13
13
13
14
13
14
14
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 
submit an eyeball surf report

Quick surf report for Third Reef:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Third Reef surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


Information about the Third Reef Surf forecast

The above surf forecast table for Third Reef provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Third Reef can be found by selecting the local surf guide option on the grey menu. Our Third Reef 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 (Third Reef) 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 Third Reef 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.

Third Reef is 85 km (53 miles) from Eureka. If you plan a vacation in Humboldt County, look for hotels and other accommodation in Eureka. Eureka has rooms for a wide range of budgets as well as car hire and transport links.

Nearest locationNearest