Surf Forecasts:
Terra Mar surf forecast from 14 Sep 2026:
- Best quality surf: Thursday 17 Sep, 5AM (local time) - 3ft (0.9m), 16s period, SSW swell with glassy winds.
- Most powerful swell: Sunday 20 Sep, 2PM (local time) - 3ft (0.9m), 18s period, SW swell with 528 kJ wave energy.
- Next surfable swell (1★+): Tuesday 15 Sep, 8PM (local time) - 1.5ft (0.4m), 20s 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 Tuesday (Sep 15) at 8PM. The primary swell is predicted to be 0.4m and 20s period with a secondary swell of 0.5m and 9s. Another secondary swell of 0.5m and 16s is also forecast. 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 0.9m 18s and forecast to arrive on Sunday (Sep 20) at 2PM. 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+) | 8PM (Tue 15th Sep) | 1.5ft (0.4m) 20s |
| Best Surf | 5AM (Thu 17th Sep) | 3ft (0.9m) 16s |
| Most Powerful | 2PM (Sun 20th Sep) | 3ft (0.9m) 18s |
Table - best surf conditions forecast for Terra Mar over the next 16 days.
The Lowdown
Alright, Rusty here. Let's have a look at what we've got.
Honestly, it's a tough run ahead. The forecast for Terra Mar is pretty flat and sad for the next 16 days. The swell is small, the wind is mostly a pain, and the scores tell the real story. Gonna be a long wait for anything decent.
Looking at Monday the 14th and Tuesday the 15th, it’s pretty much a write-off. Swell is tiny, bumpy, and cross-onshore—not worth paddling out for. The sea just looks messy.
We see a flicker of hope from Wednesday morning the 16th through the weekend of the 20th. Swell bumps up a touch to around 3 ft to 3 ft from the SW, with some long-period energy pushing the combined swell energy into the moderate range (around 417 to 639). But here’s the catch: the wind is mostly onshore or cross-onshore, coming from the SW, WSW, or W, between 6 and 9 mph. That kills the quality, leaving the waves crumbly and choppy. The best mornings might be just about ridable for a beginner, but it’s marginal and the tide could mess it up. Not a standout, just a glimmer.
The following week, from Monday the 23rd right through to the end of the forecast on Tuesday the 29th, we slide back into poor conditions. Swell drops off, gets short period, and the wind stays stubbornly cross-onshore. The energy levels weaken (down around 224 to 347), confirming it’s just not happening. This is a big gap with no real recommendations.
So, what’s the call? The only period that has any pulse is from the morning of the 16th through the 20th. Even then, the onshore wind stops it from being clean. There’s no true standout here, no day where everything lines up. If you’re desperate and just need to sit on a board, those mornings with the light breeze and waist-high lumps might be your only option, but keep the expectations real low.
Keep an eye on the forecast, though. A run like this usually doesn't last forever.
- Rusty
Short Range ForecastMostly dry. Warm (max 23°C on Mon afternoon, min 19°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 22°C on Fri morning, min 18°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | ||||||||||||||
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) | W 10 | W 8 | SW 18 | SW 17 | SW 16 | SSW 20 | SSW 18 | SSW 18 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SW 19 | SW 19 | SW 19 | SW 18 | SW 18 | SW 18 |
Wave Graph  | |||||||||||||||||||
 kJ | 149 | 113 | 150 | 190 | 161 | 127 | 114 | 390 | 347 | 366 | 288 | 246 | 242 | 303 | 303 | 234 | 379 | 375 | 375 |
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 | on | glassy | on | cross-on | glassy | cross-on | cross-on | glassy | on | cross-on | glassy | on | on | glassy |
High Tide | 11:30PM1.68m | 11:24AM2.06m | 00:18AM1.49m | 11:53AM1.99m | 1:22AM1.32m | 12:27PM1.90m | 3:52AM1.22m | 1:13PM1.80m | 2:35PM1.72m | 8:13AM1.44m | 4:22PM1.72m | ||||||||
Low Tide | 5:04AM0.79m | 6:14PM0.56m | 5:24AM0.96m | 7:08PM0.64m | 5:37AM1.11m | 8:22PM0.72m | 5:04AM1.22m | 10:05PM0.73m | 11:35PM0.67m | 10:11AM1.43m | 00:29AM0.57m | ||||||||
 |  | | | | | | | | | | | | | | | | | | |
 | — | 6:31 | — | — | 6:31 | — | — | 6:33 | — | — | 6:33 | — | — | 6:33 | — | — | 6:35 | — | — |
 | — | — | 6:57 | — | — | 6:55 | — | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — | — | 6:50 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 22 | 23 | 21 | 22 | 22 | 20 | 21 | 22 | 20 | 21 | 21 | 20 | 22 | 22 | 21 | 22 | 22 | 21 |
Feels °C | 23 | 21 | 22 | 22 | 22 | 21 | 22 | 21 | 21 | 21 | 21 | 20 | 21 | 22 | 21 | 21 | 22 | 21 | 23 |
Swell 1 Height (m) Direction Period (s) | W 10 | W 8 | W 10 | W 9 | W 9 | W 9 | SW 16 | SSW 18 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SW 19 | SSW 13 | SW 18 | SW 18 | SW 18 |
| kJ | 149 | 113 | 121 | 59 | 57 | 56 | 88 | 390 | 347 | 366 | 288 | 246 | 242 | 183 | 303 | 184 | 379 | 375 | 375 |
Swell 2 Height (m) Direction Period (s) | SW 13 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | W 8 | W 6 | W 6 | SSW 13 | S 12 | SSW 12 | SSW 11 | SW 19 | SSW 13 | W 6 | W 6 | W 6 | W 6 |
| kJ | 85 | 108 | 150 | 190 | 161 | 122 | 32 | 12 | 10 | 65 | 73 | 94 | 68 | 303 | 141 | 31 | 24 | 23 | 16 |
Swell 3 Height (m) Direction Period (s) | SW 19 | SW 13 | SW 13 | SW 12 | SW 12 | SSW 20 | SSW 18 | S 9 | S 9 | SSW 9 | SW 21 | SW 21 | SW 21 | W 6 | W 6 | SW 19 | SSW 13 | SSW 13 | SSW 12 |
| kJ | 129 | 44 | 40 | 38 | 37 | 127 | 114 | 15 | 14 | 28 | 160 | 162 | 156 | 16 | 16 | 234 | 99 | 96 | 85 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | WNW 3 | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 39 | 39 | 39 | 1 | 39 | 115 | 0 | 61 | 61 | 0 | 60 | 61 | 0 | 61 | 61 | 0 | 61 | 61 | 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.
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