Surf Forecasts:
Third Reef surf forecast from 24 Aug 2026:
- Best quality surf: Friday 28 Aug, 8AM (local time) - 4.5ft (1.3m), 8s period, NW swell with cross-offshore winds.
- Most powerful swell: Saturday 29 Aug, 2PM (local time) - 4ft (1.2m), 18s period, SSW swell with 877 kJ wave energy.
- Next surfable swell (1★+): Monday 24 Aug, 8AM (local time) - 2ft (0.6m), 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 Monday (Aug 24) at 8AM. The primary swell is predicted to be 0.6m and 18s period with a secondary swell of 1.1m and 8s. 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 1.2m 18s and forecast to arrive on Saturday (Aug 29) at 2PM. 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 14s period and expected on Monday (Aug 24) at 5PM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Mon 24th Aug) | 2ft (0.6m) 18s |
| Best Surf | 8AM (Fri 28th Aug) | 4.5ft (1.3m) 8s |
| Most Powerful | 2PM (Sat 29th Aug) | 4ft (1.2m) 18s |
Table - best surf conditions forecast for Third Reef over the next 16 days.
The Lowdown
Alright, let’s get into it. Rusty here.
Alright, folks, it’s a pretty quiet start for this region. The first real window of interest doesn’t show up until later in the period, but when it does, it comes with some promise.
The standout session for the whole outlook is on Tuesday afternoon, 1st of September at Third Reef. We’re looking at solid 5 ft of swell from the northwest, and the wind goes dead glass with the WSW dropping to zero mph. That’s a major positive. The combined energy of all swells is sitting at a healthy 697 (moderate wave energy) and the period is 11 seconds. This is going to be clean, good-quality surf. It’s a reef break, but it’s only rated for intermediate ability. Because the swell direction (NW) lines up with the optimum direction for the spot, expect well-shaped lines. This spot can draw a crowd at times, so be ready to share.
There’s another glassy window on Thursday afternoon, 3rd of September. Once again, Third Reef shows glassy conditions with 3 ft of SSW swell at a very long 19-second period. That’s classic groundswell energy, and with the combined energy at 829 (moderate to strong), this will have real push. But with a long period like that on a reef break, it could be a bit more straight, though it should still offer nice, lined-up waves. The water temp is about average for this time of year, so no dramas there.
Monday afternoon, 7th of September, also looks promising with glassy conditions and 2 ft of SSW swell at 16 seconds. The combined energy is 328 (moderate). This is a smaller, cleaner option for the start of the second week.
Be aware there are long stretches of poor conditions before those highlights, with mostly cross-onshore winds and marginal surf. The first week is pretty bleak, honestly. From Tuesday the 24th through to the end of August, the forecast is littered with scores of zero and poor surf conditions. There’s a jump in swell around the 29th of August to 4 ft, but the wind is onshore and messy, so it’s not a recommendable window. We also see a big spike in swell on the 4th and 5th of September, with heights up to 8 ft, but those come with strong winds making it messy – that’s for the experts only, if anyone.
Stick to those two glassy afternoons (1st and 3rd September) for the best chance of a clean wave.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Wed afternoon, min 13°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 21°C on Fri afternoon, min 11°C on Thu night). Mainly fresh winds. | ||||||||||||||||||||
Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | |||||||||||||||
AM | 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) | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 14 | SSW 16 | SW 16 | SSW 19 | SSW 18 | SSW 18 | SSW 16 | SSW 16 | SSW 16 | SSW 15 |
Wave Graph | |||||||||||||||||||||
255 | 192 | 183 | 326 | 214 | 206 | 203 | 201 | 186 | 134 | 171 | 164 | 339 | 214 | 411 | 759 | 751 | 532 | 627 | 457 | 334 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | glassy | 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-off |
High Tide | 10:51AM1.35m | 9:19PM1.84m | 11:19AM1.42m | 10:05PM1.88m | 11:46AM1.49m | 10:47PM1.90m | 12:12PM1.57m | 11:29PM1.89m | 12:37PM1.64m | 00:11AM1.84m | 1:02PM1.71m | 00:55AM1.76m | 1:28PM1.78m | 1:42AM1.66m | |||||||
Low Tide | 3:22PM0.98m | 4:38AM0.01m | 4:11PM0.89m | 5:12AM-0.02m | 4:54PM0.79m | 5:43AM-0.02m | 5:34PM0.67m | 6:13AM0.02m | 6:14PM0.55m | 6:41AM0.11m | 6:54PM0.44m | 7:10AM0.23m | 7:37PM0.33m | ||||||||
6:35 | — | — | 6:37 | — | — | 6:37 | — | — | 6:39 | — | — | 6:39 | — | — | 6:39 | — | — | 6:41 | — | — | |
— | 8:00 | — | — | 7:59 | — | — | 7:57 | — | — | 7:55 | — | — | 7:53 | — | — | 7:52 | — | — | 7:51 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 16 | 13 | 15 | 16 | 15 | 19 | 21 | 21 | 18 | 18 | 18 | 18 | 21 | 17 | 18 | 19 | 17 | 16 | 18 | 17 |
Feels °C | 14 | 15 | 14 | 14 | 15 | 15 | 16 | 17 | 19 | 15 | 14 | 16 | 14 | 16 | 13 | 15 | 13 | 13 | 13 | 14 | 14 |
Swell 1 Height (m) Direction Period (s) | NW 7 | NW 7 | NW 7 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | WNW 8 | SSW 16 | SW 16 | SSW 19 | SSW 18 | SSW 18 | SSW 16 | SSW 16 | SSW 16 | SSW 15 |
107 | 77 | 38 | 326 | 214 | 206 | 203 | 201 | 186 | 134 | 171 | 46 | 339 | 214 | 411 | 759 | 751 | 532 | 627 | 457 | 334 | |
Swell 2 Height (m) Direction Period (s) | SW 18 | S 14 | S 14 | S 13 | S 13 | S 13 | W 13 | W 12 | WNW 7 | S 13 | S 12 | SW 14 | NW 9 | SW 13 | SW 13 | W 11 | W 10 | W 10 | W 11 | W 11 | W 10 |
255 | 153 | 148 | 126 | 126 | 125 | 89 | 46 | 26 | 89 | 80 | 164 | 61 | 88 | 84 | 20 | 18 | 17 | 21 | 10 | 18 | |
Swell 3 Height (m) Direction Period (s) | S 14 | SW 18 | SW 17 | NW 6 | W 15 | W 14 | S 12 | SSW 12 | W 12 | WNW 8 | W 12 | S 12 | S 12 | S 19 | SSE 11 | S 10 | S 10 | S 10 | S 10 | S 9 | S 9 |
106 | 192 | 183 | 13 | 72 | 102 | 75 | 48 | 69 | 28 | 43 | 71 | 69 | 190 | 39 | 18 | 17 | 8 | 8 | 7 | 2 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | NW 4 | NW 5 | NW 4 | NW 4 | NW 4 | WNW 4 | WNW 5 | NW 5 | NW 5 | NW 5 | NW 7 | NW 7 | NW 6 | NW 6 | NW 7 | NW 7 | NW 7 |
— | — | — | — | 12 | 21 | 3 | 42 | 13 | 16 | 83 | 21 | 28 | 129 | 99 | 114 | 141 | 74 | 139 | 306 | 89 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 126 | 211 | 0 | 196 | 195 | 0 | 211 | 84 | 0 | 257 | 385 | 0 | 195 | 385 | 0 | 195 | 749 | 29 | 195 | 386 | 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.











