Surf Forecasts:
Third Reef surf forecast from 15 Aug 2026:
- Best quality surf: Saturday 15 Aug, 8AM (local time) - 2.5ft (0.8m), 18s period, SSW swell with glassy winds.
- Most powerful swell: Saturday 15 Aug, 11AM (local time) - 3.5ft (1.0m), 17s period, SSW swell with 629 kJ wave energy.
- Next surfable swell (1★+): Saturday 15 Aug, 8AM (local time) - 2.5ft (0.8m), 18s 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 (Aug 15) at 8AM. The primary swell is predicted to be 0.8m and 18s period with a secondary swell of 0.7m and 14s. 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 1.0m 17s and forecast to arrive on Saturday (Aug 15) at 11AM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Sat 15th Aug) | 2.5ft (0.8m) 18s |
| Best Surf | 8AM (Sat 15th Aug) | 2.5ft (0.8m) 18s |
| Most Powerful | 11AM (Sat 15th Aug) | 3.5ft (1.0m) 17s |
Table - best surf conditions forecast for Third Reef over the next 16 days.
The Lowdown
Alright, this is Rusty. Let’s have a look at what’s coming up for Third Reef.
The next sixteen days start off slow with a few little windows of clean glass, but honestly, it’s a bit of a mixed bag for a while. The standout moment here is the Saturday afternoon session on the 15th of August. That’s the best we’ve got on offer. The swell is small at 3 ft out of the SSW with a very long period of 17 seconds, running off a solid 679 (moderate wave energy). But the real story is the wind: it’s going glassy, dead calm from the NW at 5 km/h. That’s going to make the lineup smooth as silk. It’s a reef break exposed to the WNW, which isn’t exactly the optimum direction for a SSW swell, but the quality of the conditions should make up for it. The water temp is about average for the time of year.
Sunday the 16th looks nearly as good, also with a 3 ft SSW swell and glassy conditions in the afternoon. Again, it’s a light air situation with NW winds at 5 km/h, giving you those same clean, smooth faces.
The following week gets a bit messy. The swell picks up on the 22nd of August (Saturday) with a 5 ft NW swell hitting that afternoon, and it’s glassy again, but the period drops to 8 seconds – that’s a short-period, weak windswell, not a proper groundswell. It’s going to be on the choppier side and pretty inconsistent quality-wise. The combined energy reading (487) is moderate but the short period makes it less appealing for a reef. For the rest of that week into the end of the month, the wind is mostly cross-onshore and the surf quality is poor, with a lot of chop. There’s a bigger spike on the 26th (Wednesday) afternoon with a 7 ft NW swell, but the wind is still cross-onshore, so the shape will be messy. By the 27th and into the 28th, waves get up to 7 ft and 6 ft, but the wind stays cross-onshore with a moderate breeze, making it rough. That’s expert-only territory due to size, but the conditions don't cooperate.
The last few days of the window show a bit of a switch back to a longer period SSW groundswell on the 28th afternoon (3 ft, 18 seconds, 1158 strong energy) and again on the 30th (3 ft, 13 seconds), but the wind remains cross-onshore or cross-shore, so it’s still marginal at best.
If you’re not fussy, the clean windows on Saturday and Sunday the 15th and 16th are your only real bet. Beyond that, it’s mostly cross-onshore chop and short-period windswell, not worth getting excited about.
Stay stoked.
- Rusty
Short Range ForecastMostly dry. Very mild (max 16°C on Sun morning, min 12°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 18°C on Tue night, min 12°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | ||||||||||||||
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) | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 15 | SSW 15 | SSW 14 | SSW 15 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 |
Wave Graph | |||||||||||||||||||
360 | 629 | 505 | 539 | 525 | 512 | 334 | 330 | 334 | 334 | 178 | 252 | 291 | 273 | 309 | 314 | 233 | 223 | 236 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | glassy | cross-off | on | glassy | cross | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross-off | cross-on | cross-on | cross-off |
High Tide | 1:18AM1.90m | 2:13PM1.81m | 2:11AM1.71m | 2:47PM1.83m | 3:06AM1.52m | 3:22PM1.81m | 4:06AM1.35m | 3:58PM1.78m | 5:19AM1.21m | 4:39PM1.74m | 6:54AM1.14m | 5:29PM1.71m | |||||||
Low Tide | 7:46AM0.03m | 8:12PM0.41m | 8:22AM0.24m | 9:06PM0.37m | 8:57AM0.45m | 10:03PM0.35m | 9:32AM0.66m | 11:05PM0.34m | 10:11AM0.83m | 00:11AM0.32m | 10:57AM0.96m | 1:18AM0.28m | |||||||
— | 6:26 | — | — | 6:28 | — | — | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:31 | — | — | |
8:14 | — | 8:13 | — | — | 8:12 | — | — | 8:09 | — | — | 8:08 | — | — | 8:07 | — | — | 8:06 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 15 | 15 | 14 | 16 | 16 | 15 | 15 | 15 | 14 | 16 | 17 | 18 | 17 | 16 | 16 | 15 | 15 | 14 |
Feels °C | 13 | 14 | 14 | 15 | 15 | 16 | 15 | 14 | 14 | 14 | 14 | 16 | 16 | 14 | 13 | 15 | 13 | 13 | 13 |
Swell 1 Height (m) Direction Period (s) | NW 7 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 15 | SSW 15 | SSW 14 | SSW 15 | SSW 16 | SSW 16 | SSW 15 | NW 7 | NW 7 | WNW 11 | WNW 11 |
50 | 629 | 505 | 539 | 525 | 512 | 334 | 330 | 334 | 334 | 178 | 252 | 291 | 273 | 309 | 77 | 89 | 170 | 133 | |
Swell 2 Height (m) Direction Period (s) | SSW 18 | NNW 7 | WNW 10 | NW 5 | NW 5 | WNW 9 | NW 6 | NW 7 | W 9 | NW 6 | SSW 17 | WNW 15 | WNW 13 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | SSW 14 | SSW 14 |
360 | 20 | 21 | 10 | 14 | 29 | 49 | 67 | 39 | 49 | 100 | 84 | 101 | 157 | 158 | 199 | 193 | 223 | 236 | |
Swell 3 Height (m) Direction Period (s) | SW 14 | WNW 10 | WNW 8 | W 10 | WNW 10 | S 12 | WNW 9 | WNW 9 | S 11 | WNW 8 | WNW 8 | NW 11 | SSW 13 | SW 20 | SW 21 | SSW 15 | SSW 14 | SW 19 | SW 20 |
214 | 21 | 13 | 51 | 31 | 11 | 26 | 26 | 9 | 22 | 19 | 5 | 98 | 16 | 18 | 314 | 233 | 58 | 15 | |
Wind waves Height (m) Direction Period (s) | — | WNW 5 | NW 5 | NW 5 | — | NW 6 | NW 6 | — | NW 7 | NW 6 | NW 6 | NW 6 | NW 6 | NW 7 | NW 7 | NW 7 | NW 7 | NW 7 | NW 8 |
— | 9 | 33 | 45 | — | 49 | 113 | — | 97 | 120 | 42 | 112 | 81 | 169 | 174 | 206 | 152 | 102 | 67 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 195 | 0 | 0 | 169 | 0 | 3 | 188 | 386 | 3 | 195 | 3 | 3 | 195 | 385 | 0 | 195 | 3 | 0 |
Best forecast wave conditions in Humboldt County | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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.











