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 cross-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, let’s keep it simple—this is a slow stretch. The surf is small, the winds are mostly onshore or cross-onshore, and we’ve got a lot of knee-high mush ahead. Water temp is 73°, which is well above normal for this time of year, so you’ll be comfortable in a spring suit.
Sunday the 13th kicks things off with a tiny 0.4m of SW swell, but the period is a long 19 seconds. That’s clean energy, but there’s no size. Light W winds are cross-on, so it’s not glassy, but it’s not blown out either. Bring the longboard.
Monday the 14th is worse. 1.0m in the morning, but the period is a short, choppy 8 seconds, and SSW winds at 15 km/h mess it up. Afternoon drops to 0.5m. Not worth it.
Tuesday the 15th through Thursday the 17th: still tiny—0.4m to 0.8m—with periods from 15 to 20 seconds. The energy is building (we see it climbing from 255 up to 520 by Thursday morning), but there’s just no size. Winds stay light, but on or cross-on. Small, weak, and tide-dependent.
Friday the 18th through Monday the 21st: the swell stays small (0.6m to 1.0m) but the period holds in the 17-19 second range, and the energy is solidly moderate (471 to 637). That’s real groundswell, but it’s long-period and small, so it’ll be fat and slow, maybe a bit too straight for the beach. Winds are light but not offshore. This is longboard surf—a few soft walls if you can find them.
Tuesday the 22nd through Sunday the 28th: more of the same. Swell stays 0.7m to 0.9m, periods drop from 16 seconds down to 12 seconds by Saturday. Energy stays moderate (249 to 606), but the quality is consistently poor to marginal. Winds are W or SW, light, but on or cross-on.
Honestly, there’s no standout in this whole window. The best bet is probably Monday the 21st afternoon—1.0m of SW swell at 17 seconds, light SW winds, and the energy is up there (637). It’s still onshore, but it might be the cleanest of the bunch.
Otherwise, it’s a waiting game. The energy is there, but it never turns into real waves. The winds never go offshore, and the tide is always a factor.
Beginners might catch a few on the 13th and 14th, but after that, it’s more trouble than it’s worth. Kitesurfers might find some fun on the choppier days, but for pure surfing, it’s a dry spell.
Hang in there. The energy is around, so it won’t stay flat forever. But for now, keep expectations low and the board ready.
Rusty
Short Range ForecastMostly dry. Warm (max 23°C on Sun 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. | |||||||||||||||||||
Sun 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | ||||||||||||||
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 19 | 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 | 131 | 153 | 116 | 150 | 190 | 161 | 127 | 114 | 390 | 347 | 366 | 288 | 275 | 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 | on | glassy | on | cross-on | glassy | cross-on | cross-on | glassy | cross-on | cross-on | glassy | on | cross-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 | 5:27PM0.50m | 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 | — | — |
 | 6:59 | — | — | 6:57 | — | — | 6:55 | — | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — | — | 6:50 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 21 | 22 | 23 | 21 | 22 | 22 | 20 | 21 | 21 | 20 | 21 | 21 | 19 | 22 | 22 | 20 | 22 | 22 | 20 |
Feels °C | 24 | 23 | 21 | 22 | 22 | 22 | 22 | 22 | 21 | 20 | 21 | 21 | 20 | 20 | 22 | 21 | 20 | 22 | 22 | 21 |
Swell 1 Height (m) Direction Period (s) | W 7 | 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 | W 6 | SW 18 | SW 18 | W 6 |
| kJ | 42 | 153 | 116 | 122 | 79 | 57 | 57 | 87 | 390 | 347 | 366 | 288 | 275 | 242 | 183 | 303 | 32 | 379 | 375 | 48 |
Swell 2 Height (m) Direction Period (s) | SW 13 | SW 13 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | W 8 | W 6 | W 6 | SSW 13 | S 12 | SSW 10 | SSW 10 | SW 19 | SSW 13 | SSW 13 | W 6 | W 6 | SW 18 |
| kJ | 87 | 85 | 108 | 150 | 190 | 161 | 122 | 32 | 12 | 10 | 64 | 72 | 59 | 60 | 303 | 141 | 139 | 37 | 37 | 375 |
Swell 3 Height (m) Direction Period (s) | SW 19 | 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 | S 9 | S 8 | SW 19 | SSW 13 | SSW 13 | SSW 12 |
| kJ | 131 | 129 | 44 | 40 | 38 | 37 | 127 | 114 | 15 | 25 | 28 | 160 | 162 | 156 | 24 | 13 | 234 | 99 | 96 | 85 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | WNW 5 | — | — | W 5 | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 9 | — | — | 14 | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 61 | 39 | 103 | 39 | 39 | 39 | 61 | 0 | 61 | 61 | 0 | 60 | 60 | 0 | 60 | 61 | 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.
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