Third Reef Surf Break

Lat Long: 40.03° N 124.08° W

Third Reef Surf Forecast and Surf Report

Issued: 10 am 01 Sep 2026 (local time)

Forecast update in  hr  min

Today's Third Reef sea temperature is
13.9°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 1 Sep 2026:

  • Best quality surf: Thursday 3 Sep, 11PM (local time) - 6ft (1.8m), 12s period, NW swell with glassy winds.
  • Most powerful swell: Friday 4 Sep, 2AM (local time) - 6ft (1.9m), 12s period, NW swell with 945 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 1 Sep, 5PM (local time) - 2.5ft (0.7m), 13s period with SSW 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 (Sep 01) at 5PM. The primary swell is predicted to be 0.7m and 13s period with a secondary swell of 0.7m and 10s. Another secondary swell of 0.3m and 4s is also forecast. 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 1.9m 12s and forecast to arrive on Friday (Sep 04) at 2AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 15s period and expected on Monday (Sep 07) at 11PM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 5PM (Tue 1st Sep)2.5ft (0.7m) 13s
Best Surf11PM (Thu 3rd Sep)6ft (1.8m) 12s
Most Powerful 2AM (Fri 4th Sep)6ft (1.9m) 12s

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


The Lowdown

Alright, Rusty here. Let’s talk about what’s shaping up for Third Reef.

The next couple of days are a bit of a tease, with small, clean waves but nothing really pushing. The real action starts to build towards the end of the week and into the second week. The standouts are Thursday 10th and Friday 11th, where the conditions just line up perfectly for some proper fun.

Kicking off today, Tuesday the 1st, we’ve got small swell from the SSW around 3ft with a decent 13-second period. The morning is a bit crossed-up with a light southerly breeze, but by the afternoon it cleans right up, turning cross-off. It’s very weak energy (322) though, so it’s small and pretty gutless.

Wednesday the 2nd sees a drop in height to 2ft in the morning, but the period jumps to 18 seconds and energy hits 443 – that’s long-period groundswell trying to push in. The wind is moderate though, and by the afternoon it gets a bit choppy and messy with rain. Hard to get excited.

Thursday the 3rd is better. Morning has 3ft at 19 seconds, with a massive energy spike (915) – that’s moderate-to-strong energy, and the long period means proper shape. Light wind keeps it clean. The afternoon pushes to 5ft from the WNW (11s), wind is light, but it’s still a bit crossing. That long period makes this spot work best on the reef; it might break a little straight at the beach.

Friday the 4th gets bigger – 6ft from the NW in the morning with 1315 energy, but the wind is onshore from the WNW. That’s clean-ish but not ideal. The afternoon stays lumpy with cross-on wind. That’s a lot of water moving but the wind doesn’t do it any favours.

Saturday the 5th and Sunday the 6th bring clean, small SSW swell back – around 3ft with 15–16 seconds. Light onshore winds from the west keep it rideable but not glassy. Energy stays moderate (572–769). It’s okay, but nothing to write home about.

Monday the 7th is poor – small, messy, cross-on wind. Tuesday the 8th has 5ft but with a horrible 7-second windswell period and strong NNW winds – pure chop. Pass.

Now here’s where it gets good. Thursday the 10th: the afternoon turns absolutely glassy – zero wind, with 3ft of beautiful 17-second SW groundswell. Energy is strong at 757. That’s the kind of evening you’ll want to be in the water. The reef will handle that long period beautifully.

Friday the 11th is another cracker: afternoon again, glassy, 3ft at 16 seconds from the SW, energy at 611. Clean, lined up, and easy paddling.

Saturday the 12th afternoon gets interesting too – glassy conditions with 6ft from the NW, but the period drops to 8 seconds, so it’s a bit more of a windswell pulse. Still, with no wind, it’ll be fun.

Monday the 14th afternoon pushes 6ft from the NW at 12 seconds, energy over 1100 – that’s proper groundswell. The wind is light cross-on, so not perfect, but there will be some solid waves.

Tuesday the 15th afternoon: glassy again, 6ft NW at 8 seconds. Again, punchy but short period.

Overall, the best on offer is Thursday 10th and Friday 11th – both afternoons with glassy conditions and long-period SSW groundswell in the 3ft range. It’s not huge, but it’ll be clean, well-shaped, and with that energy (600–750), there’s enough grunt. The water temp is about 57°F, which is a touch below the norm for this time – nothing crazy, just a little cooler.

Third Reef is a reef setup, fairly consistent, and it can get crowded sometimes. The optimum swell direction is WNW, so those NW pulses on the 4th and 14th are also worth watching, but the wind isn’t as kind.

Stay sharp, and get out there on those glassy afternoons.
Rusty.

Short Range Forecast

Heavy rain (total 33mm), heaviest during Wed night. Very mild (max 16°C on Tue morning, min 13°C on Thu night). Winds decreasing (fresh winds from the SE on Wed night, calm by Thu night).

Days 4-6 Weather Summary

Mostly dry. Very mild (max 16°C on Fri morning, min 11°C on Sun night). Wind will be generally light.

Tuesday
1
Wednesday
2
Thursday
3
Friday
4
Saturday
5
Sunday
6
Monday
7
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
2
2
1
0
1
2
2
4
3
1
3
2
2
3
2
1
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)
0.8
SSW
13
0.7
SSW
13
0.7
SSW
13
0.6
SW
18
0.5
SW
16
1.3
WNW
8
0.9
SW
19
1.6
WNW
11
1.9
NW
12
1.7
NW
11
1.6
NW
10
1
SSW
16
1
SSW
16
1
SSW
16
1.1
SSW
15
1
SSW
15
1
SSW
14
0.8
SSW
14
0.8
SSW
14
0.8
SSW
14
0.7
SSW
13
Wave Graph
Metric surfscale
Energy kJ
198
154
154
252
130
214
513
586
945
664
490
559
487
469
519
411
400
236
233
223
156
Wind (km/h)
10
S
10
SSE
10
ESE
25
SSE
25
SE
20
SSE
10
S
5
S
5
ENE
10
WNW
15
WNW
10
NE
10
W
10
WNW
10
NNE
10
W
15
WNW
5
NE
10
WNW
25
NW
15
NNE
Wind State
cross
cross-off
off
cross-off
cross-off
cross-off
cross
cross
glassy
on
cross-on
cross-off
on
on
cross-off
on
on
cross-off
cross-on
cross-on
cross-off
High Tide
2:28PM1.89m
3:33AM1.39m
3:05PM1.92m
4:47AM1.26m
3:51PM1.93m
6:22AM1.19m
4:51PM1.92m
8:01AM1.23m
6:05PM1.91m
9:09AM1.32m
7:25PM1.94m
9:55AM1.43m
8:38PM1.98m
Low Tide
8:09AM0.54m
9:17PM0.17m
8:43AM0.71m
10:19PM0.12m
9:24AM0.86m
11:29PM0.07m
10:20AM0.98m
00:44AM0.02m
11:41AM1.05m
1:56AM-0.06m
1:13PM1.04m
3:00AM-0.12m
2:35PM0.93m
3:53AM-0.16m
light rain
cloud
part cloud
cloud
light rain
heavy rain
light rain
rain showers
clear
clear
part cloud
clear
clear
part cloud
clear
clear
part cloud
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:43
6:43
6:45
6:46
6:47
6:48
6:48
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:47
7:45
7:45
7:43
7:40
7:39
7:37
 mm
1
3
25
3
1
Temp °C
16
16
15
15
15
15
15
16
15
16
15
15
15
15
16
14
15
13
16
18
17
Feels °C
16
14
15
13
12
11
14
16
16
15
13
14
14
14
15
12
13
12
14
14
14
  • Map Icons:
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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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