Surf Forecasts:
Terra Mar surf forecast from 31 Aug 2026:
- Best quality surf: Monday 7 Sep, 5AM (local time) - 8ft (2.5m), 15s period, S swell with offshore winds.
- Most powerful swell: Monday 7 Sep, 8AM (local time) - 10ft (3.0m), 15s period, S swell with 3,294 kJ wave energy.
- Next surfable swell (1★+): Monday 31 Aug, 11PM (local time) - 2.5ft (0.7m), 13s period with SSW swell.
Best Forecast Surf Conditions for Terra Mar this week:
The surf forecast for Terra Mar over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 31) at 11PM. The primary swell is predicted to be 0.7m and 13s period with a secondary swell of 0.7m and 11s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Terra Mar in the next 16 days are 3.0m 15s and forecast to arrive on Monday (Sep 07) at 8AM. Winds are predicted to be offshore at the time the swell arrives.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Mon 31st Aug) | 2.5ft (0.7m) 13s |
| Best Surf | 5AM (Mon 7th Sep) | 8ft (2.5m) 15s |
| Most Powerful | 8AM (Mon 7th Sep) | 10ft (3.0m) 15s |
Table - best surf conditions forecast for Terra Mar over the next 16 days.
The Lowdown
Alright, surfers, Rusty here. Let’s be straight with you: this 16-day window for Terra Mar is a tough one. We’re looking at a long stretch of small, weak, and mostly messy conditions for the better part of the next two weeks. There’s a glimmer of hope for the experienced crew right at the end of the first week, but for everyone else, it’s going to be a waiting game.
The water is sitting at a very warm 78°, which is a massive 10° above normal for this time of year. You’re not going to need a thick wetsuit, that’s for sure.
From now through to the end of the first week, it’s pretty grim. The swell is tiny, mostly under 3 ft, with weak energy readings. The wind is a persistent problem, coming from the WSW or W, keeping it cross-onshore and choppy. The period is variable, but the quality is just poor. Monday afternoon the 31st of August sees a tiny 3 ft S swell but with a cross-on breeze, it’s not worth paddling out for.
The first real standout arrives on Sunday, September 6th in the afternoon. The wind swings around to a moderate offshore from the NNE at 12 mph, cleaning things up nicely. The swell jumps to 7 ft from the south with a 15-second period. That’s a powerful groundswell and will be a proper challenge. This is for advanced surfers only. The long period will make for some excellent, powerful walls at this point break, but the sets will be a bit wider apart.
Monday, September 7th morning is another highlight for the experienced. The swell peaks at 10 ft from the south with a 14-second period. The wind is a light cross-offshore from the east, keeping it clean. This is a big, powerful swell, and at that size, Terra Mar will be a wave for experts only. The afternoon goes downhill fast with a stormy cross-on wind, so get your session in early.
After that, the surf drops off quickly. The second week is a write-off. From September 8th onwards, the swell is all over the place, the wind is mostly onshore or cross-onshore, and the energy levels crash back down. There are a few small windows of clean-ish conditions, but the swell is consistently under 3 ft, and the quality is poor. It’s a long stretch of flat to small, sloppy surf.
In short, if you’re an expert, you have a window from Sunday afternoon, September 6th through Monday morning, September 7th for some serious, powerful waves. For everyone else, the next 16 days are a washout. Keep an eye on the charts, but it’s a tough one.
Rusty.
Short Range ForecastMostly dry. Warm (max 24°C on Mon morning, min 19°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 23°C on Fri morning, min 19°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | |||||||||||||||
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) | SSW 14 | S 12 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SW 16 | SSW 13 | SW 17 | SW 15 | SW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | S 15 | S 14 | S 14 | S 15 | S 15 |
Wave Graph | |||||||||||||||||||||
253 | 184 | 156 | 116 | 114 | 93 | 216 | 149 | 291 | 149 | 455 | 651 | 594 | 726 | 620 | 512 | 711 | 1030 | 1447 | 2027 | 2445 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | glassy | cross-on | cross-on | cross-off | cross-on | cross-on | glassy | on | on | glassy | cross-on | on | glassy | cross-on | cross-on | cross | cross-on | off | off |
High Tide | 11:32AM2.02m | 11:57PM1.60m | 12:06PM2.03m | 00:58AM1.39m | 12:48PM2.03m | 2:40AM1.23m | 1:48PM2.00m | 6:05AM1.25m | 3:13PM1.98m | 7:12AM1.38m | 4:46PM2.04m | 7:41AM1.51m | 6:01PM2.14m | ||||||||
Low Tide | 6:02PM0.64m | 5:34AM0.79m | 7:03PM0.65m | 5:58AM0.95m | 8:23PM0.65m | 6:24AM1.10m | 10:07PM0.59m | 7:01AM1.25m | 11:37PM0.45m | 10:01AM1.32m | 00:40AM0.30m | 11:49AM1.23m | 1:27AM0.18m | ||||||||
6:22 | — | — | 6:22 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:26 | — | — | 6:26 | — | — | |
— | 7:15 | — | — | 7:15 | — | — | 7:13 | — | — | 7:12 | — | — | 7:10 | — | — | 7:08 | — | — | 7:07 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 10 | 10 |
Temp °C | 24 | 23 | 21 | 23 | 23 | 21 | 22 | 23 | 21 | 22 | 22 | 21 | 23 | 23 | 22 | 23 | 23 | 23 | 24 | 22 | 23 |
Feels °C | 24 | 22 | 21 | 22 | 20 | 20 | 21 | 21 | 20 | 21 | 20 | 23 | 21 | 22 | 24 | 23 | 23 | 23 | 23 | 22 | 24 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | S 12 | S 11 | S 11 | S 10 | W 5 | SSW 12 | SSW 13 | W 6 | W 6 | SW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | S 15 | S 14 | S 14 | S 15 | S 15 |
253 | 184 | 119 | 112 | 78 | 21 | 107 | 149 | 50 | 51 | 455 | 651 | 594 | 726 | 620 | 512 | 711 | 1030 | 1447 | 2027 | 2445 | |
Swell 2 Height (m) Direction Period (s) | S 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | S 10 | SW 16 | S 11 | SSW 12 | SSW 11 | W 7 | W 6 | W 7 | W 6 | SSE 14 | S 14 | SSW 16 | SSW 15 | SW 14 | WSW 10 | W 10 |
206 | 158 | 156 | 116 | 114 | 46 | 216 | 82 | 203 | 140 | 55 | 33 | 58 | 33 | 269 | 293 | 506 | 451 | 206 | 32 | 17 | |
Swell 3 Height (m) Direction Period (s) | W 6 | SSW 19 | W 5 | W 6 | SW 18 | SSW 13 | W 6 | SW 16 | SW 17 | SW 15 | SSW 10 | SSW 10 | SW 10 | S 15 | W 5 | W 5 | SW 10 | WSW 10 | — | — | — |
39 | 35 | 12 | 15 | 80 | 93 | 24 | 129 | 291 | 149 | 92 | 36 | 50 | 116 | 11 | 8 | 39 | 40 | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | W 6 | — | — | W 6 | — | — | W 6 | — | — | — | — | — | — | — | — | W 5 | — | — | — | — |
— | 25 | — | — | 23 | — | — | 23 | — | — | — | — | — | — | — | — | 8 | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 61 | 61 | 0 | 60 | 61 | 0 | 60 | 61 | 0 | 60 | 263 | 0 | 103 | 61 | 0 | 60 | 60 | 5 | 44 | 0 | 0 |
Best forecast wave conditions in San Diego County | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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Information about the Terra Mar Surf forecast
The above surf forecast table for Terra Mar provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Terra Mar can be found by selecting the local surf guide option on the grey menu. Our Terra Mar 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 (Terra Mar) 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 Terra Mar 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.
Terra Mar is 1 km (1 miles) from the city of Oceanside. If you plan a vacation in San Diego County, look for hotels and other accommodation in Oceanside. Oceanside has rooms for a wide range of budgets as well as car hire and transport links.











