Third Reef Surf Break

Lat Long: 40.03° N 124.08° W

Third Reef Surf Forecast and Surf Report

Issued: 10 am 10 Jul 2026 (local time)

Forecast update in  hr  min

Today's Third Reef sea temperature is
12.5° C
0.6° 

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 Jul 2026:

  • Best quality surf: Saturday 11 Jul, 2AM (local time) - 3ft (0.9m), 15s period, SSW swell with cross-offshore winds.
  • Most powerful swell: Thursday 16 Jul, 8AM (local time) - 8ft (2.5m), 9s period, NW swell with 895 kJ wave energy.
  • Next surfable swell (1★+): Friday 10 Jul, 11PM (local time) - 3ft (0.9m), 15s 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 Friday (Jul 10) at 11PM. The primary swell is predicted to be 0.9m and 15s period with a secondary swell of 0.7m and 9s. Another secondary swell of 0.8m and 5s 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 2.5m 9s and forecast to arrive on Thursday (Jul 16) at 8AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 18s period and expected on Sunday (Jul 12) at 5PM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+)11PM (Fri 10th Jul)3ft (0.9m) 15s
Best Surf 2AM (Sat 11th Jul)3ft (0.9m) 15s
Most Powerful 8AM (Thu 16th Jul)8ft (2.5m) 9s

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


G’day, I’m Rusty. Let’s get into it.

First off, I’ll be straight with you – this 16-day window at Third Reef starts out pretty grim. We’ve got a long stretch of poor surf, thanks to a persistent cross-onshore wind from the NW that’s just chopping everything up. For the first four days, Friday the 10th through Monday the 13th, the swell is small – around 2ft to 5ft from the SSW or NW – and the energy is weak to moderate (around 414-875), but the wind is ruining any chance of a clean wave. It’s a write-off. Tuesday the 14th afternoon shows a slight lift to 5ft, but still cross-on and only marginal. Wednesday the 15th and Thursday the 16th see the swell pick up to 6ft-7ft, and the energy climbs into the strong range (698-979), but again, the wind is cross-onshore, so it’s just messy and poor for paddling. This setup is more interesting for kite surfing than paddle surfing.

Then, Friday the 17th morning brings a glimmer – the wind finally swings to WNW at 6 mph, going onshore, with a 3ft swell from the WNW at a long 17-second period. The energy is strong (919). It’s only marginal, but that long period groundswell could offer some shape at a reef break like this, and the light breeze means it won’t be too choppy. Still, it’s not a standout.

We hit a proper gap in quality from the 18th to the 20th – just small, messy waves with light cross-onshore winds. Nothing to get excited about.

Now, here’s the one true standout in this whole outlook. On Tuesday the 21st of July, in the afternoon, the wind drops to glassy – absolutely dead calm – with a 3ft swell from the SSW at a period of 15 seconds. The energy is moderate (487). For a reef break like Third Reef, that long-period groundswell with glassy conditions will produce clean, playful waves. The crowds are listed as “sometimes,” so you might have a few others out, but it’ll be worth it. This is the best on offer.

Into the final week, Wednesday the 22nd and Thursday the 23rd morning stay marginal with cross-on wind, but Thursday the 23rd afternoon hits another highlight: glassy conditions again, with a 7ft swell from the NW at 9 seconds. That’s a solid size – over 8ft, so it’s for experts only – and the energy is strong (852). The wind is glassy, so those waves will be clean and powerful. It’s a proper reef slab with that NW swell, but the period is short, so it might be a bit walled-up. Still, a standout for experienced surfers.

Friday the 24th and Saturday the 25th, the wind swings back to a moderate cross-onshore, ruining the 6ft-7ft swell. Back to poor conditions.

So, to sum it up: the first week is a dud. The one standout you want to circle is Tuesday the 21st afternoon for clean, small waves. The second standout is Thursday the 23rd afternoon for bigger, glassy but expert-only surf. Everything else is marginal or poor.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 23°C on Sun afternoon, min 11°C on Fri night). Wind will be generally light.

Days 4-6 Weather Summary

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

Friday
10
Saturday
11
Sunday
12
Monday
13
Tuesday
14
Wednesday
15
Thursday
16
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
3
0
0
1
0
0
3
0
0
3
0
1
1
0
0
1
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)
0.9
SSW
16
0.9
SSW
15
0.9
SSW
15
0.9
SSW
14
0.8
SSW
15
0.8
SSW
15
0.7
SSW
14
1.8
NW
7
0.8
SSW
14
1.3
NW
8
1.4
NW
8
1.6
NW
7
1.1
NW
7
1.6
NW
7
0.6
SW
18
1.4
NW
8
1.9
NW
8
1.5
NW
8
1.7
NW
9
2
NW
8
1.9
NW
8
Wave Graph
Metric surfscale
Energy kJ
377
372
339
330
272
252
168
275
229
216
247
253
118
213
194
223
403
299
427
530
470
Wind (km/h)
25
NW
20
NW
15
NNE
20
NW
25
NNW
20
N
20
NW
25
NW
15
NNE
20
NW
10
NW
10
NNE
15
NW
10
NW
15
N
20
NW
15
NW
15
N
25
NW
20
NW
10
N
Wind State
cross-on
cross-on
cross-off
cross-on
cross-on
cross
cross-on
cross-on
cross-off
cross-on
cross-on
cross-off
cross-on
cross-on
cross
cross-on
cross-on
cross
cross-on
cross-on
cross
High Tide
9:12AM1.17m
7:53PM2.08m
10:22AM1.25m
8:48PM2.18m
11:19AM1.34m
9:44PM2.26m
12:11PM1.42m
10:39PM2.29m
12:57PM1.50m
11:34PM2.26m
1:41PM1.57m
00:29AM2.16m
2:22PM1.63m
1:24AM2.00m
Low Tide
1:17PM0.85m
3:30AM-0.27m
2:23PM0.92m
4:26AM-0.45m
3:31PM0.93m
5:18AM-0.56m
4:34PM0.90m
6:07AM-0.60m
5:35PM0.84m
6:53AM-0.56m
6:33PM0.77m
7:38AM-0.45m
7:31PM0.71m
clear
clear
clear
part cloud
part cloud
part cloud
clear
clear
part cloud
cloud
part cloud
clear
clear
part cloud
clear
clear
part cloud
clear
clear
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:56
5:56
5:56
5:58
5:58
5:58
6:00
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:45
8:45
8:45
8:45
8:44
8:44
8:43
 mm
Temp °C
15
17
18
18
22
20
20
23
21
18
16
15
18
16
18
16
18
19
16
16
16
Feels °C
11
13
15
15
18
16
16
18
18
15
13
14
15
14
16
13
15
15
12
12
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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