Third Reef Surf Break

Lat Long: 40.03° N 124.08° W

Third Reef Surf Forecast and Surf Report

Issued: 4 pm 14 Jul 2026 (local time)

Forecast update in  hr  min

Today's Third Reef sea temperature is
12.3° C
0.8° 

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 15 Jul 2026:

  • Best quality surf: Friday 17 Jul, 11PM (local time) - 3ft (0.9m), 16s period, WNW swell with cross-offshore winds.
  • Most powerful swell: Sunday 19 Jul, 8PM (local time) - 3ft (0.9m), 17s period, SW swell with 505 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 14 Jul, 11PM (local time) - 1.5ft (0.5m), 18s period with SW 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 (Jul 14) at 11PM. The primary swell is predicted to be 0.5m and 18s 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 0.9m 17s and forecast to arrive on Sunday (Jul 19) at 8PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 11s period and expected on Tuesday (Jul 21) at 11AM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+)11PM (Tue 14th Jul)1.5ft (0.5m) 18s
Best Surf11PM (Fri 17th Jul)3ft (0.9m) 16s
Most Powerful 8PM (Sun 19th Jul)3ft (0.9m) 17s

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


The Lowdown

Alright, Rusty here. Let’s have a look at what’s on the table for Third Reef over the next couple of weeks.

Right off the bat, we’ve got a bit of a slow start, but if you’re patient, there’s a couple of real gems hiding in the second half of the outlook. The water temperature is sitting at 54°, which is about 1° cooler than usual for this time of year – nothing to write home about, just a touch on the chilly side.

The first real window of opportunity kicks off on Tuesday afternoon, July 14th. It’s tiny, with a 1ft swell from the southwest, but the period is a very long 18 seconds, meaning there’s real groundswell energy in the water despite the size. The combined energy is moderate (386), and the wind is glassy – dead calm. For a reef break, that’s a recipe for clean, lined-up little waves. It’s a subtle start, but it’s surfable.

Then we hit a dry spell. From Wednesday the 15th all the way through to Saturday the 19th, the wind is a mess – mostly cross-onshore from the northwest, gusting up to 18 mph at times. The swell gets a bit bigger, up to 6ft, but with a short period of 6 seconds and choppy conditions, it’s a write-off. The combined energy climbs into the 800s and 900s, but with that wind, it’s just a washing machine. Not worth paddling out.

Sunday morning, July 19th, things start to ease. Glassy conditions return with a 3ft swell from the west-northwest, period 15 seconds. The energy is still strong (613), but the wave comment is a solid “expect very good surf conditions.” It’s a small but clean window.

The next standout is Tuesday afternoon, July 21st. Again, glassy conditions, 3ft from the south-southwest, 14-second period. Moderate energy (324), but with that glassy wind and a reef break, you’ll be surfing silky lines.

Now, the real highlight of the whole forecast lands on Saturday afternoon, July 25th. The wind goes dead calm – 0 mph from the south-southwest, glassy. The swell is 4ft from the southwest, with a very long period of 21 seconds. The combined energy is a massive 1222 – that’s strong wave energy. The comment says “excellent surf conditions for experienced surfers,” and I’d agree. That’s a day for the crew who know the reef. The direction is a near-perfect match for the optimum (WNW), so it’s going to wrap in nicely.

Sunday afternoon, July 26th also looks promising: glassy winds, 3ft from the south-southwest, 19-second period, strong energy (797), and “expect very good surf conditions.” A solid backup.

If I had to pick the one true standout, it’s Saturday afternoon, July 25th – that’s your best bet. Long period groundswell, glassy, and enough size to get your blood pumping. The 24th of July also has a late-afternoon window with a 24-second period, which is very long, but it’s a smaller 2ft, so it’s more of a longboarder’s dream.

The second week is a bit of a mixed bag – lots of cross-onshore wind and marginal conditions, but those two glassy windows in the last weekend of July are worth circling on the calendar. Crowds at Third Reef can be “sometimes” busy, so on those good days, don’t expect to have it to yourself.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 21°C on Thu afternoon, min 11°C on Thu night). Winds increasing (calm on Tue afternoon, fresh winds from the NW by Thu afternoon).

Days 5-7 Weather Summary

Mostly dry. Very mild (max 15°C on Fri afternoon, min 11°C on Fri night). Wind will be generally light.

Tue
14
Wednesday
15
Thursday
16
Friday
17
Saturday
18
Sunday
19
Monday
20
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
Rating
(10 max)
2
2
0
0
2
0
0
1
0
1
3
2
2
3
3
2
2
1
2
2
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.3
NW
6
0.6
SW
18
0.6
SW
18
1.7
NW
6
0.5
WNW
20
1.2
NW
9
1.6
NW
6
0.7
WNW
18
0.8
WNW
17
0.9
WNW
17
0.9
WNW
16
0.9
WNW
16
0.8
SW
18
0.8
WNW
16
0.8
WNW
15
0.9
SW
17
0.9
SW
17
0.7
SW
16
0.9
SW
16
0.9
SW
16
0.8
SSW
16
Wave Graph
Metric surfscale
Energy kJ
113
194
246
185
218
225
203
318
344
394
371
362
375
277
263
439
419
261
362
367
310
Wind (km/h)
0
NNE
15
NNE
20
NW
20
NW
15
NNE
25
NW
30
NNW
15
N
20
WNW
10
NW
10
NNE
10
WNW
10
NW
0
NW
5
W
10
WNW
5
NW
5
WNW
5
NW
5
NNW
10
WNW
Wind State
glassy
cross-off
cross-on
cross-on
cross-off
cross-on
cross-on
cross
cross-on
cross-on
cross-off
on
cross-on
glassy
glassy
on
cross-on
cross-on
cross-on
glassy
cross-on
High Tide
11:34PM2.26m
1:41PM1.57m
00:29AM2.16m
2:22PM1.63m
1:24AM2.00m
3:03PM1.69m
2:20AM1.80m
3:42PM1.73m
3:18AM1.57m
4:22PM1.76m
4:22AM1.36m
5:02PM1.77m
5:40AM1.19m
Low Tide
5:35PM0.84m
6:53AM-0.56m
6:33PM0.77m
7:38AM-0.45m
7:31PM0.71m
8:20AM-0.27m
8:32PM0.64m
9:02AM-0.06m
9:37PM0.58m
9:42AM0.17m
10:44PM0.51m
10:22AM0.40m
11:52PM0.42m
11:03AM0.61m
cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
part cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:58
6:00
6:01
6:01
6:01
6:03
6:03
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:44
8:44
8:43
8:43
8:42
8:40
8:40
8:39
 mm
Temp °C
18
16
18
19
20
19
21
18
15
15
13
13
14
12
13
14
13
15
15
15
16
Feels °C
15
16
14
15
17
15
16
14
12
12
13
13
13
12
13
13
12
14
15
15
15
  • 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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