Third Reef Surf Break

Lat Long: 40.03° N 124.08° W

Third Reef Surf Forecast and Surf Report

Issued: 4 am 29 Jul 2026 (local time)

Forecast update in  hr  min

Today's Third Reef sea temperature is
15.3° C
1.8° 

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 29 Jul 2026:

  • Best quality surf: Tuesday 4 Aug, 2AM (local time) - 10ft (3.0m), 10s period, NW swell with cross-offshore winds.
  • Most powerful swell: Tuesday 4 Aug, 2AM (local time) - 10ft (3.0m), 10s period, NW swell with 1,696 kJ wave energy.
  • Next surfable swell (1★+): Thursday 30 Jul, 8AM (local time) - 3.5ft (1.0m), 16s 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 Thursday (Jul 30) at 8AM. The primary swell is predicted to be 1.0m and 16s period with a secondary swell of 1.1m and 6s. Another secondary swell of 1.6m and 7s 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 3.0m 10s and forecast to arrive on Tuesday (Aug 04) at 2AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 18s period and expected on Wednesday (Jul 29) at 11PM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Thu 30th Jul)3.5ft (1.0m) 16s
Best Surf 2AM (Tue 4th Aug)10ft (3.0m) 10s
Most Powerful 2AM (Tue 4th Aug)10ft (3.0m) 10s

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


The Lowdown

Alright folks, Rusty here. Let’s get into it. We’ve got a long stretch ahead, but the honest truth is this run looks pretty grim for the paddle crew. The whole 16-day window is basically a write-off for decent surf. Gonna be a long, quiet period.

The first real chance of anything worth getting wet for doesn’t pop up until Monday, 3rd of August, and even then it’s only just scraping into the "maybe" category. From now until then? Mostly poor surf with cross-onshore winds and choppy conditions. Not worth the wax.

Let’s start with the only spot on the cards, Third Reef. This is a reef break, fairly consistent, and it’s best with a swell from the WNW. The water temp is sitting at 60°F, which is a touch warmer than normal for this time of year.

From Monday, 3rd August, things shift from terrible to merely marginal. The mornings are still a bit lumpy, but by Monday afternoon we’re seeing a 8ft swell from the NW with a period of 9 seconds (moderate energy, around 920). The wind drops to a light breeze, so it’s just light cross-onshore with small ripples. It’s still not clean, but it’s the best of a bad lot. Tuesday the 4th is similar: 6ft NW swell, period 10 seconds, winds are light, and the energy is moderate (736-661). Conditions are still only marginal, but the wind is very light, almost glassy at times. That’s about as good as it gets.

The swell builds a bit more towards the end of the first week and into the second. Sunday, 9th August afternoon shows a 7ft NW swell with an 8-second period, and with just a slight air, it’s looking light and clean. Combined energy is strong at 807. This is the closest we get to a stand-out, but it’s still only a marginal call.

Then on Monday, 10th August morning, we get the biggest energy reading of the whole forecast: a 7ft NW swell, period 8 seconds, and the combined energy is a solid 1215. Winds are light from the WNW. That’s the peak of the window in terms of power, but it’s still a short-period swell, so it’s going to be fat and a bit closed out at a reef. Not a classic.

After that, the swell drops off and the wind flirts with an offshore direction on Tuesday, 11th August morning, coming from the WSW. Swell is 5ft from the NW, period 9 seconds. That’s the only time we see actual offshore wind in the whole outlook, but it’s still a marginal situation.

The final week flips back to longer-period south-southwest swells, like on Wednesday, 12th August with a 2ft, 18-second groundswell – that’s a very long period, but it’s tiny. That kind of long period is better for a point or river, but here it’s just a whisper.

Bottom line: If you’re desperate, the best windows are Monday, 3rd August afternoon through Tuesday, 4th August, and again Sunday, 9th August afternoon through Monday, 10th August morning. The winds are lightest then, and the swell has some size. But don’t expect perfection. Crowds are a possibility at Third Reef, so if the wind looks good, it’ll have a few bodies out.

Forget the rest of the days – it’s all cross-onshore chop. If you’ve got a kite, this whole stretch might look more interesting than for a paddle board.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 24°C on Thu afternoon, min 11°C on Wed night). Mainly fresh winds.

Days 4-6 Weather Summary

Mostly dry. Warm (max 24°C on Sat afternoon, min 11°C on Sat night). Winds decreasing (fresh winds from the NNW on Sat afternoon, light winds from the NNE by Mon night).

Wednesday
29
Thursday
30
Friday
31
Saturday
1
Sunday
2
Monday
3
Tuesday
4
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
2
0
0
1
0
0
1
0
0
1
0
0
2
0
2
4
2
2
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
1
SSW
16
0.9
SSW
16
0.9
SSW
16
1.1
SSW
16
0.6
SW
15
0.9
SSW
14
0.8
SSW
14
0.7
SSW
14
1.5
NW
6
1.9
NW
7
1.9
NW
8
2.1
NW
8
2.4
NW
8
2.3
NW
9
2.1
NW
9
2.3
NW
9
3
NW
10
1.8
NW
10
1.8
NW
10
1.6
NW
10
Wave Graph
Metric surfscale
Energy kJ
635
539
441
419
568
171
301
239
183
177
312
470
596
822
872
684
835
1696
636
554
479
Wind (km/h)
20
NW
30
NW
15
NNE
20
NW
25
NNW
15
NNE
20
NW
25
NW
20
NNE
25
NNW
30
NNW
20
N
25
NW
30
NNW
20
N
20
NW
10
NNW
15
N
10
NW
5
NW
15
N
Wind State
cross-on
cross-on
cross-off
cross-on
cross-on
cross-off
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-off
High Tide
1:05PM1.45m
11:40PM1.93m
1:33PM1.50m
00:19AM1.88m
2:00PM1.55m
1:00AM1.80m
2:26PM1.61m
1:44AM1.69m
2:52PM1.67m
2:32AM1.55m
3:21PM1.74m
3:29AM1.40m
3:54PM1.81m
4:39AM1.25m
Low Tide
5:49PM0.89m
6:50AM-0.15m
6:30PM0.83m
7:19AM-0.09m
7:12PM0.77m
7:48AM0.00m
7:57PM0.69m
8:17AM0.14m
8:45PM0.60m
8:47AM0.30m
9:41PM0.49m
9:20AM0.47m
10:44PM0.37m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:11
6:11
6:13
6:13
6:15
6:16
6:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:32
8:31
8:30
8:30
8:29
8:28
8:27
 mm
Temp °C
18
22
20
19
24
21
18
24
21
23
24
16
20
23
18
20
20
20
19
17
18
Feels °C
15
17
17
15
18
16
15
19
16
19
19
12
16
17
14
17
18
18
18
16
17
  • 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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