Third Reef Surf Break

Lat Long: 40.03° N 124.08° W

Third Reef Surf Forecast and Surf Report

Issued: 10 am 03 Aug 2026 (local time)

Forecast update in  hr  min

Today's Third Reef sea temperature is
13.1° C
0.7° 

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 3 Aug 2026:

  • Best quality surf: Monday 3 Aug, 5PM (local time) - 6ft (1.9m), 10s period, NW swell with glassy winds.
  • Most powerful swell: Monday 3 Aug, 5PM (local time) - 6ft (1.9m), 10s period, NW swell with 646 kJ wave energy.
  • Next surfable swell (1★+): Monday 3 Aug, 5PM (local time) - 6ft (1.9m), 10s 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 Monday (Aug 03) at 5PM. The primary swell is predicted to be 1.9m and 10s period with a secondary swell of 0.4m and 13s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Third Reef in the next 16 days are 1.9m 10s and forecast to arrive on Monday (Aug 03) at 5PM. Winds are predicted to be glassy at the time the swell arrives.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 5PM (Mon 3rd Aug)6ft (1.9m) 10s
Best Surf 5PM (Mon 3rd Aug)6ft (1.9m) 10s
Most Powerful 5PM (Mon 3rd Aug)6ft (1.9m) 10s

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


The Lowdown

Alright, Rusty here. Let’s get into it.

We’ve got a bit of a mixed bag coming up for Third Reef. The opening days look pretty average, but there are a couple of windows where it could clean up nicely.

The week kicks off Monday, August 3rd, with a lumpy 6 ft NW swell pushing through. The morning is a write-off with that cross-onshore breeze messing things up. But Monday afternoon the wind drops to glassy, and that same 6 ft NW swell (10-second period) will turn on. The water temp is sitting at 56°, which is about normal for this time of year. The wave energy is moderate (748). This afternoon session is your first real stand-out.

Tuesday the 4th sees the swell drop to 5 ft from the NW, period down to 9 seconds. The morning has a clean cross-off breeze, but the afternoon goes glassy. Both sessions are clean and surfable, though the energy drops to 411 and then 355. Decent, not epic.

Wednesday the 5th is smaller again at 4 ft NW, period down to 8 seconds. Morning is clean, afternoon is glassy. Surfable but on the small side. Energy is weak (280-271).

Thursday the 6th drops right off to 2 ft from the SW with a long 13-second period. The morning is pretty poor, and the afternoon is just ordinary. This is a real gap in the quality.

Friday the 7th shows a bit of a rebound to 3 ft-4 ft NW, but the morning is choppy with a cross-on breeze. The afternoon goes glassy though, and the energy picks up to 366. That afternoon window is worth a look.

From Saturday the 8th all the way through to Friday the 14th, it’s a long stretch of poor surf. The swell bumps up and down between 5 ft and 7 ft from the NW, but the wind is relentless cross-onshore, making it choppy and lumpy. The energy is moderate to strong (500-900 range), but the conditions are just not good for a clean wave. This is a big gap with no real recommendations.

Saturday the 15th brings a change. A new, very long-period SSW swell (18 seconds) arrives at 2 ft in the morning, but it’s small. The afternoon sees it rise to 3 ft with the period at 16 seconds, and the wind goes glassy. The energy is strong at 790. This is your second real stand-out – a clean, glassy afternoon with a long period groundswell. Because the period is so long (over 15 seconds), this swell will be best for the reef, as it can break a bit straight on a beach.

Sunday the 16th through Tuesday the 18th stays small with SSW to W swells around 2 ft to 3 ft. The periods are long (13-16 seconds). Winds are light and mostly cross or cross-on, so the quality is marginal, but Tuesday the 18th afternoon glass-off offers one more clean shot at 3 ft from the W with moderate energy (604).

Best on offer: Monday afternoon, August 3rd, for that solid 6 ft NW swell in glassy conditions. And Saturday afternoon, August 15th, for a clean, long-period SSW swell that will really suit the reef.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 19°C on Mon afternoon, min 13°C on Wed night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 22°C on Sat afternoon, min 11°C on Sat night). Wind will be generally light.

Monday
3
Tuesday
4
Wednesday
5
Thursday
6
Friday
7
Saturday
8
Sunday
9
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
3
2
2
2
2
2
2
2
0
1
2
0
2
2
0
0
0
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)
1.9
NW
10
1.9
NW
10
1.6
NW
10
1.4
NW
9
1.3
NW
9
1.2
NW
9
1.1
NW
8
1.1
NW
8
0.5
SW
14
0.5
SW
13
0.5
SW
13
0.6
SSW
13
1
NW
8
1.1
NW
8
1.7
NW
8
1.3
NW
8
1.9
NW
7
1.3
NW
8
1.7
NW
8
2.1
NW
8
1.6
NW
8
Wave Graph
Metric surfscale
Energy kJ
660
646
469
311
262
230
173
160
95
87
85
120
111
153
337
235
365
211
380
581
358
Wind (km/h)
15
WNW
0
WSW
10
N
5
SSE
5
W
0
ESE
10
S
5
SSW
0
NE
5
W
5
WNW
10
NNE
15
WNW
5
NW
10
N
15
NW
25
NNW
15
N
20
NW
20
NW
15
N
Wind State
cross-on
glassy
cross
cross-off
glassy
glassy
cross-off
glassy
glassy
on
glassy
cross-off
cross-on
glassy
cross
cross-on
cross-on
cross
cross-on
cross-on
cross
High Tide
3:21PM1.74m
3:29AM1.40m
3:54PM1.81m
4:39AM1.25m
4:34PM1.87m
6:09AM1.15m
5:24PM1.94m
7:52AM1.15m
6:25PM2.00m
9:17AM1.22m
7:32PM2.07m
10:17AM1.32m
8:38PM2.14m
Low Tide
8:47AM0.30m
9:41PM0.49m
9:20AM0.47m
10:44PM0.37m
9:57AM0.64m
11:53PM0.24m
10:43AM0.80m
1:04AM0.09m
11:43AM0.93m
2:13AM-0.06m
12:59PM1.00m
3:17AM-0.21m
2:19PM1.00m
4:13AM-0.33m
clear
clear
clear
clear
part cloud
clear
clear
part cloud
clear
part cloud
part cloud
clear
clear
part cloud
clear
clear
clear
clear
clear
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:16
6:16
6:18
6:18
6:18
6:20
6:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:28
8:27
8:24
8:23
8:22
8:22
8:21
 mm
Temp °C
18
19
19
17
17
16
16
16
14
14
15
16
17
16
17
18
22
20
17
19
19
Feels °C
16
19
17
16
16
15
15
15
15
13
14
15
15
15
15
16
18
16
14
16
15
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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 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.

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