Surf Forecasts:
Terra Mar surf forecast from 15 Aug 2026:
- Best quality surf: Saturday 15 Aug, 11PM (local time) - 4ft (1.2m), 16s period, SSW swell with cross-offshore winds.
- Most powerful swell: Saturday 15 Aug, 2PM (local time) - 4ft (1.2m), 16s period, SSW swell with 691 kJ wave energy.
- Next surfable swell (1★+): Saturday 15 Aug, 11PM (local time) - 4ft (1.2m), 16s 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 Saturday (Aug 15) at 11PM. The primary swell is predicted to be 1.2m and 16s period with a secondary swell of 0.5m and 4s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Terra Mar in the next 16 days are 1.2m 16s and forecast to arrive on Saturday (Aug 15) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Sat 15th Aug) | 4ft (1.2m) 16s |
| Best Surf | 11PM (Sat 15th Aug) | 4ft (1.2m) 16s |
| Most Powerful | 2PM (Sat 15th Aug) | 4ft (1.2m) 16s |
Table - best surf conditions forecast for Terra Mar over the next 16 days.
The Lowdown
Alright, surfers, Rusty here. We’ve got a bit of a flat spell opening things up at Terra Mar, so don’t be in a rush to grab your board just yet. The sea’s not doing much for the next week and a half, so you’d be better off waxing up a different stick or just watching the horizon.
The start of the window is looking pretty sad. We've got small, weak SSW energy rolling in, but it’s not coming together at all. The winds – mostly out of the W and WSW – are cross-onshore, turning what little there is into a messy, choppy closeout. The water temp is sitting at 73.8°, which is a massive 5.9° warmer than usual for this time of year, so it feels like a bath out there, but that’s about the only thing going for it. This stretch is a write-off.
From the 17th through to the 24th of August, the trend remains poor. The swell stays small, the period is mediocre, and the energy is weak, with values mostly in the low hundreds (374-427). A best-case scenario here just isn't worth paddling out for. There’s a small window on the 25th where things start to shift.
Now, let’s talk about the one true standout in this whole 16-day outlook. Things finally get interesting on Tuesday, August 25th. A new S swell pushes through, and the energy jumps dramatically to a strong 1384 in the morning and hits a solid 2003 by the afternoon. The swell size is a fun 4.6ft, but the period is a bit short, so we’re looking at a wind swell, not a clean groundswell. The direction is S, which is a bit different from the preferred WSW. The wind is light though, and the morning has almost no breeze which is a huge plus. It’s going to be the most surfable it’s been all week, even if it’s a bit lumpy. Let's call it a fun, high-energy option despite the short period.
Wednesday the 26th continues this trend with the swell picking up to 6.2ft, but the period drops to 14 seconds and the winds turn cross-on in the afternoon, so it gets messier. By the 27th, it’s up to 6.6ft, which is getting big for beginners, and the period is dropping. The energy is still strong (around 1417) but the wind is making it rough.
After the 28th, things start to taper off again. The energy drops, and while the period gets longer on Friday the 28th (19 seconds) and Saturday the 29th (18 seconds), the waves stay small. Friday morning has a promising 19-second SW groundswell, but only 3ft of surf, so it's not going to be breaking with any real power. It’s a tease of what could be.
So, in a nutshell... there’s a long stretch of nothing, and then a punchy but short-lived window on the 25th through the 27th that’s your best bet. Don't expect perfection, but it's the only thing worth getting in the water for.
Stay salty.
Short Range ForecastMostly dry. Warm (max 24°C on Mon morning, min 19°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Thu morning, min 22°C on Tue morning). Wind will be generally light. | ||||||||||||||||||||
Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | |||||||||||||||
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 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 16 | SSW 16 | SSW 15 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 |
Wave Graph | |||||||||||||||||||||
417 | 683 | 666 | 499 | 443 | 367 | 330 | 264 | 257 | 232 | 240 | 272 | 377 | 387 | 249 | 236 | 236 | 175 | 156 | 99 | 98 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | glassy | on | cross-on | glassy | cross-on | on | glassy | cross-on | cross-on | glassy | cross-on | cross-on | glassy |
High Tide | 11:52AM1.96m | 11:45PM1.85m | 12:26PM1.96m | 00:34AM1.60m | 1:01PM1.93m | 1:36AM1.37m | 1:41PM1.88m | 3:24AM1.21m | 2:34PM1.82m | 3:47PM1.80m | 8:25AM1.36m | 5:06PM1.83m | |||||||||
Low Tide | 5:51PM0.72m | 5:58AM0.56m | 6:46PM0.75m | 6:24AM0.77m | 7:51PM0.79m | 6:47AM0.96m | 9:16PM0.81m | 7:02AM1.12m | 10:59PM0.76m | 00:19AM0.65m | 10:09AM1.35m | 1:10AM0.54m | |||||||||
6:11 | — | — | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:15 | — | — | 6:16 | — | — | |
— | 7:35 | — | — | 7:34 | — | — | 7:32 | — | — | 7:31 | — | — | 7:30 | — | — | 7:29 | — | — | 7:28 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 21 | 20 | 22 | 23 | 21 | 24 | 24 | 22 | 24 | 24 | 22 | 25 | 25 | 23 | 26 | 26 | 24 | 27 | 27 | 25 |
Feels °C | 20 | 19 | 21 | 22 | 22 | 21 | 24 | 23 | 23 | 25 | 24 | 24 | 26 | 25 | 25 | 27 | 26 | 26 | 27 | 26 | 27 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | W 7 | W 7 | W 6 | SSW 15 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 |
417 | 683 | 666 | 499 | 443 | 367 | 330 | 264 | 69 | 61 | 39 | 272 | 377 | 387 | 249 | 236 | 236 | 175 | 156 | 99 | 98 | |
Swell 2 Height (m) Direction Period (s) | SW 14 | W 11 | W 5 | W 5 | S 10 | W 6 | W 6 | SSW 18 | SSW 14 | SSW 16 | SSW 16 | W 9 | W 8 | W 6 | W 6 | W 6 | W 6 | W 6 | W 7 | SSW 16 | W 4 |
191 | 2 | 11 | 8 | 8 | 39 | 36 | 65 | 257 | 232 | 240 | 37 | 34 | 18 | 11 | 12 | 11 | 12 | 15 | 51 | 6 | |
Swell 3 Height (m) Direction Period (s) | W 11 | W 11 | S 11 | S 10 | W 10 | S 10 | S 10 | S 10 | S 10 | SSW 13 | SSW 13 | SW 19 | SW 20 | W 14 | SW 18 | SW 19 | WSW 19 | WNW 12 | SW 18 | SW 18 | SSW 16 |
2 | 10 | 20 | 19 | 2 | 8 | 8 | 8 | 2 | 114 | 98 | 15 | 16 | 4 | 13 | 57 | 35 | 13 | 81 | 49 | 51 | |
Wind waves Height (m) Direction Period (s) | SW 11 | WSW 11 | — | W 5 | W 5 | — | — | W 6 | — | — | — | — | — | — | — | — | — | — | — | W 6 | — |
58 | 79 | — | 14 | 20 | — | — | 37 | — | — | — | — | — | — | — | — | — | — | — | 20 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 61 | 61 | 60 | 61 | 61 | 38 | 60 | 61 | 0 | 61 | 61 | 0 | 61 | 61 | 0 | 61 | 60 | 0 | 60 | 60 | 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.











