
Surf Forecasts:
Third Reef surf forecast from 6 Aug 2026:
- Best quality surf: Monday 10 Aug, 5AM (local time) - 6ft (1.9m), 9s period, NW swell with cross-offshore winds.
- Most powerful swell: Monday 10 Aug, 8AM (local time) - 8ft (2.5m), 9s period, NW swell with 1,107 kJ wave energy.
- Next surfable swell (1★+): Thursday 6 Aug, 2AM (local time) - 1.5ft (0.5m), 14s 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 Thursday (Aug 06) at 2AM. The primary swell is predicted to be 0.5m and 14s period with a secondary swell of 0.7m and 9s. Another secondary swell of 0.6m and 8s is also forecast. The wind is predicted to be glassy 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 Monday (Aug 10) 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 0.5m 13s period and expected on Monday (Aug 10) at 11PM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Thu 6th Aug) | 1.5ft (0.5m) 14s |
| Best Surf | 5AM (Mon 10th Aug) | 6ft (1.9m) 9s |
| Most Powerful | 8AM (Mon 10th Aug) | 8ft (2.5m) 9s |
Table - best surf conditions forecast for Third Reef over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s talk about Third Reef.
Looking at the next 16 days, we’ve got a whole lot of swell but the wind is mostly coming from the side and onshore, which is gonna chop things up. There’s a big dead patch with no real good surf, so don’t plan on anything great for the first week. The second half of the window is where it gets interesting.
The big swells hit around the weekend of August 7th through the 9th, but the wind is bad. Expect a lot of poor conditions with cross-onshore winds and moderate breezes. The swell gets up to 7ft on Sunday afternoon, but with that wind, it’s a battle. The combined energy is strong, hitting 889 (strong wave energy) on Sunday, but it’s not for paddle surfing.
The one that catches my eye is the afternoon of Wednesday, August 19th. The wind goes glassy, and that’s a huge win. We’ll have a 6ft swell from the NW with a 6-second period. That’s a short period wind swell, but with glassy conditions, it’s going to be a whole lot more fun than anything else. The combined energy is 622 (moderate wave energy), but the clean surface will make it rideable. This spot is fairly consistent, so expect a few friends out there.
Then, Thursday afternoon, August 20th, is the real standout. Again, glassy conditions with a 6ft swell from the NW, and the combined energy is a bit higher at 655 (moderate wave energy). The water temperature is 54°F, which is a bit colder than normal, so you’ll need a thick suit.
The rest of the run is just so-so. The swell direction is mostly from the NW, which is the best direction for this reef break, but the wind is usually cross-onshore. There are a few mornings with a light cross-shore or offshore wind, but the swell is smaller then. The swell period is often around 9 seconds, which is fine, but nothing special.
If you’ve got the patience, wait for the 19th and 20th. The early stuff is just not worth the paddle.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Sat morning, min 13°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Sat afternoon, min 13°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Wed 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | ||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | ||||||||||||||||||||
Wave Height (m) Direction Period (s) | NW 9 | SW 14 | SW 13 | SW 13 | SSW 13 | SW 18 | SSW 18 | SW 16 | SSW 17 | NW 7 | NW 8 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 |
Wave Graph | ||||||||||||||||||||
115 | 95 | 87 | 85 | 113 | 88 | 133 | 133 | 237 | 375 | 250 | 437 | 639 | 564 | 497 | 702 | 599 | 626 | 753 | 721 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | glassy | glassy | cross-on | glassy | cross-on | glassy | cross | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross-off |
High Tide | 4:34PM1.87m | 6:09AM1.15m | 5:24PM1.94m | 7:52AM1.15m | 6:25PM2.00m | 9:17AM1.22m | 7:32PM2.07m | 10:17AM1.32m | 8:38PM2.14m | 11:04AM1.42m | 9:40PM2.20m | 11:46AM1.52m | 10:37PM2.21m | |||||||
Low Tide | 11:53PM0.24m | 10:43AM0.80m | 1:04AM0.09m | 11:43AM0.93m | 2:13AM-0.06m | 12:59PM1.00m | 3:17AM-0.21m | 2:19PM1.00m | 4:13AM-0.33m | 3:32PM0.93m | 5:03AM-0.38m | 4:37PM0.81m | ||||||||
— | — | 6:18 | — | — | 6:18 | — | — | 6:20 | — | — | 6:20 | — | — | 6:22 | — | — | 6:22 | — | — | |
8:24 | — | — | 8:23 | — | — | 8:22 | — | — | 8:22 | — | — | 8:21 | — | — | 8:19 | — | — | 8:17 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 14 | 14 | 15 | 15 | 18 | 16 | 17 | 21 | 27 | 22 | 18 | 18 | 20 | 18 | 18 | 19 | 17 | 17 | 19 |
Feels °C | 16 | 14 | 14 | 14 | 15 | 16 | 15 | 16 | 17 | 22 | 18 | 15 | 16 | 16 | 16 | 16 | 16 | 15 | 16 | 16 |
Swell 1 Height (m) Direction Period (s) | NW 9 | WNW 9 | WNW 9 | SW 13 | SSW 13 | NW 6 | SW 13 | SW 13 | SSW 17 | SSW 18 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 18 |
115 | 70 | 43 | 85 | 113 | 24 | 79 | 80 | 237 | 240 | 146 | 263 | 196 | 167 | 165 | 163 | 60 | 70 | 58 | 209 | |
Swell 2 Height (m) Direction Period (s) | SW 14 | NNW 8 | SW 13 | WNW 8 | NW 5 | SW 13 | SSW 18 | SW 16 | SSW 13 | SW 12 | NW 10 | SW 12 | SSW 12 | SW 21 | SW 21 | SW 20 | SW 20 | SW 19 | SW 18 | SW 14 |
99 | 43 | 87 | 28 | 11 | 57 | 133 | 133 | 65 | 21 | 52 | 37 | 28 | 72 | 67 | 98 | 97 | 95 | 82 | 54 | |
Swell 3 Height (m) Direction Period (s) | NNW 8 | SW 14 | NNW 8 | NNW 8 | NNW 8 | SW 18 | S 12 | SSW 19 | NW 12 | W 13 | SSW 12 | SW 23 | W 12 | SSW 11 | S 10 | S 10 | SW 16 | SW 19 | SW 14 | S 12 |
26 | 95 | 24 | 23 | 22 | 80 | 11 | 74 | 21 | 31 | 56 | 21 | 26 | 25 | 2 | 2 | 39 | 95 | 33 | 27 | |
Wind waves Height (m) Direction Period (s) | S 3 | — | — | — | — | NW 6 | NW 6 | NW 7 | NW 7 | NW 7 | NW 8 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 |
1 | — | — | — | — | 88 | 103 | 105 | 156 | 375 | 250 | 437 | 639 | 564 | 497 | 702 | 599 | 626 | 753 | 721 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 124 | 0 | 0 | 243 | 0 | 195 | 0 | 3 | 195 | 729 | 3 | 211 | 3 | 3 | 169 | 29 | 3 | 169 | 3 | 0 |
Best forecast wave conditions in Humboldt County | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
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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.











