Third Reef Surf Break

Lat Long: 40.03° N 124.08° W

Third Reef Surf Forecast and Surf Report

Issued: 4 am 09 Jul 2026 (local time)

Forecast update in  hr  min

Today's Third Reef sea temperature is
12.4° 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 9 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 9 Jul, 11AM (local time) - 3.5ft (1.1m), 16s period, SSW swell with 643 kJ wave energy.
  • Next surfable swell (1★+): Saturday 11 Jul, 2AM (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 Saturday (Jul 11) at 2AM. The primary swell is predicted to be 0.9m and 15s period with a secondary swell of 1.0m and 9s. Another secondary swell of 1.3m and 6s 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 1.1m 16s and forecast to arrive on Thursday (Jul 09) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 18s period and expected on Thursday (Jul 09) at 2PM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Sat 11th Jul)3ft (0.9m) 15s
Best Surf 2AM (Sat 11th Jul)3ft (0.9m) 15s
Most Powerful11AM (Thu 9th Jul)3.5ft (1.1m) 16s

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


G’day, Rusty here. Let’s have a look at what’s coming up for Third Reef.

Right off the bat, the next week and a half is a bit of a grind. There’s some decent sized swell but the wind is almost always onshore or cross-on, making it choppy and messy. The water is sitting at 54° today, which is pretty much bang on average for this time of year, so no surprises there in terms of temp.

The first real standout doesn’t show up until Thursday, July 16th. That afternoon, we’ve got a 6ft swell from the NW with a period of 9 seconds, and the wind goes glassy. That’s the kind of clean, smooth surface you dream about. The combined energy is pushing 1038, so there’s plenty of grunt behind it. This is a reef setup, so it’ll handle that size well, but at 6ft, it’s getting into the territory where it’s more for experienced surfers. The swell direction is NW, and the optimum direction for this spot is WNW, so it’s a solid match.

Friday, July 17th afternoon also looks clean with a 3ft swell from the WNW at a very long 17 seconds, and a light cross-off breeze. The energy is still strong at 822, and that long period will make for some well-shaped, powerful lines. Again, it’s a reef break, so that long period groundswell is going to focus nicely.

Then on Saturday, July 18th afternoon, we’ve got glassy conditions again, with a 3ft swell from the SW at 18 seconds. That’s classic clean, lined-up surf, and the energy is 870. Light winds, long period, tidy waves.

The best of the lot is probably Thursday, July 16th afternoon, combining the biggest swell of the period with glassy conditions. That’s the one to circle on the calendar. Sunday, July 19th afternoon also looks promising with a 5ft NW swell and glassy, calm wind, though the period is a shorter 9 seconds.

Crowds here are listed as “sometimes,” so you might have company, but it’s not a circus.

The first week and a half is mostly a write-off, with a lot of poor conditions and moderate energy. But from the 16th onward, there’s a run of clean, glassy windows that should fire, especially for the reef.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 24°C on Sat afternoon, min 10°C on Thu night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 21°C on Mon morning, min 12°C on Tue night). Wind will be generally light.

Thursday
9
Friday
10
Saturday
11
Sunday
12
Monday
13
Tuesday
14
Wednesday
15
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
0
1
0
0
3
0
0
1
0
2
3
0
1
2
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)
1.1
SSW
16
2.1
NW
7
0.9
SSW
16
0.9
SSW
16
0.9
SSW
15
0.9
SSW
15
0.8
SSW
14
0.8
SSW
15
0.8
SSW
15
0.7
SSW
14
1.7
NW
7
1.3
NW
9
0.6
SSW
14
1.5
NW
6
0.6
SSW
13
0.4
WNW
14
0.4
SW
18
0.6
SW
18
1.3
NW
10
1.7
NW
6
2.3
NW
8
Wave Graph
Metric surfscale
Energy kJ
643
452
377
377
372
339
268
272
252
170
287
255
135
141
139
69
113
194
341
205
598
Wind (km/h)
20
NW
25
NW
15
N
25
NW
25
NW
15
NNE
15
NW
25
NNW
15
N
20
NW
10
NW
10
NNE
10
NW
10
NW
10
NNE
20
NW
20
NW
15
NNE
20
NW
30
NNW
20
N
Wind State
cross-on
cross-on
cross
cross-on
cross-on
cross-off
cross-on
cross-on
cross-off
cross-on
cross-on
cross-off
cross-on
cross-on
cross-off
cross-on
cross-on
cross-off
cross-on
cross-on
cross
High Tide
7:00PM1.96m
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
Low Tide
12:18PM0.73m
2:31AM-0.06m
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
part cloud
part cloud
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
part cloud
part cloud
cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:54
5:56
5:56
5:56
5:58
5:58
5:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:46
8:45
8:45
8:45
8:45
8:44
8:44
 mm
Temp °C
15
17
18
16
19
19
19
24
20
19
17
17
21
16
15
19
20
21
20
21
17
Feels °C
12
13
14
12
14
16
16
18
16
15
16
15
19
14
15
14
16
18
16
16
13
  • 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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