
Surf Forecasts:
Cardiff Reef surf forecast from 16 Sep 2026:
- Best quality surf: Thursday 17 Sep, 5AM (local time) - 3ft (0.9m), 16s period, SSW swell with glassy winds.
- Most powerful swell: Monday 21 Sep, 11AM (local time) - 3.5ft (1.1m), 17s period, SW swell with 625 kJ wave energy.
- Next surfable swell (1★+): Tuesday 15 Sep, 11PM (local time) - 1.5ft (0.4m), 19s period with SSW swell.
Best Forecast Surf Conditions for Cardiff Reef this week:
The surf forecast for Cardiff Reef over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Sep 15) at 11PM. The primary swell is predicted to be 0.4m and 19s period with a secondary swell of 0.6m and 9s. Another secondary swell of 0.4m and 16s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Cardiff Reef in the next 16 days are 1.1m 17s and forecast to arrive on Monday (Sep 21) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 12s period and expected on Sunday (Sep 20) at 5PM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Tue 15th Sep) | 1.5ft (0.4m) 19s |
| Best Surf | 5AM (Thu 17th Sep) | 3ft (0.9m) 16s |
| Most Powerful | 11AM (Mon 21st Sep) | 3.5ft (1.1m) 17s |
Table - best surf conditions forecast for Cardiff Reef over the next 16 days.
The Lowdown
Right now, the surf is pretty underwhelming out at Cardiff Reef. We’ve got a clean-looking ocean, but there’s just not a lot of push. The water’s sitting at 23°, which is a solid 3° warmer than usual for this time of year—that’s a big deal, you won’t need much more than a springy.
For the next few days, through the 17th, we're looking at small, weak swell. Tuesday afternoon has a cross-on wind with a 0.6m southwest swell at 16 seconds, but the energy is a weak 360. It’s got that long period, but the size just isn't there—it's going to be gutless. The wind will have it a bit lumpy and choppy, so don't expect much.
Wednesday and Thursday stay in that poor to marginal range. The swell bumps up slightly to 0.8-0.9m, but the period drops a notch and the onshore wind is going to keep things messy. While the swell is from the SSW, that's not quite the ideal WNW direction for this reef, so it’ll be a bit soft and without any real bite. The combined energy is in the moderate range, hitting a peak around 488 on Thursday afternoon, but it’s not translating to anything you’d get out of bed for.
Over the weekend (the 18th and 19th), the swell stays small, around 0.6-0.9m, but the period gets back up to 18-19 seconds. That long period gives it a bit more push, but the straight-on W wind is going to be your enemy. It’s a classic case of “looks good on paper, feels flat in the water.” Energy gets into the mid-500s on Saturday morning, but the onshore wind keeps the surface bumpy.
The best of the run looks like Monday, the 21st. We finally see the swell nudge up to a consistent 1.1m from the southwest with a 17-second period. The combined energy jumps up to a strong 750, which is the most oomph we’ve seen all week. But even then, wind is still cross-onshore from the SSW, so it’s going to be a bit lumpy. It’s the most surfable it’s been, but it's still not what I'd call a standout—more like a “if you’re desperate” kind of day. The crowd can be a bit of a factor out here, so with waves this small, everyone will be on top of each other.
After that, it fades back out. From the 22nd through the 30th, we're mostly looking at 0.6-0.9m of SW swell with the period slowly dropping from 16 seconds down to 12-13 seconds by the end of the run. The wind is consistently onshore, either from the W or WNW, which is the wrong direction for keeping it clean. The energy stays in the moderate range, mid-300s to low-400s, but it’s all surface chop and no real power. This reef needs that west-northwest groundswell to really light up, and we just aren't getting it.
Honestly, the standout of the entire 16-day window is that Monday the 21st. It's got the biggest swell, the most energy, and the longest period. But it's still not a classic. It’s the only day I'd even bother checking, and even then, you might want to wax up a log and take the whitewash if it gets too lumpy.
The rest of the run is a write-off. There’s no point staring at the forecast hoping for a change—it’s just not coming. If you’re not a beginner, this is a good time to take a break and work on the fins.
Rusty
Short Range ForecastMostly dry. Warm (max 22°C on Tue afternoon, min 18°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 22°C on Fri afternoon, min 19°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Tue 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | ||||||||||||||
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 16 | SW 16 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SW 19 | SW 19 | SW 19 | SW 18 | SW 18 | SW 18 | SW 18 | SW 18 | SW 17 | SW 17 | SW 17 | SW 16 |
Wave Graph | ||||||||||||||||||||
157 | 157 | 475 | 339 | 366 | 284 | 272 | 376 | 303 | 303 | 299 | 379 | 375 | 375 | 522 | 522 | 499 | 625 | 618 | 521 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | glassy | cross-on | on | glassy | on | on | cross-on | on | on | cross-on | on | on | glassy | cross-on | on | glassy | cross-on | cross-on | glassy |
High Tide | 1:21AM1.32m | 12:26PM1.89m | 3:50AM1.22m | 1:12PM1.79m | 2:34PM1.72m | 8:13AM1.44m | 4:22PM1.72m | 7:53AM1.50m | 5:36PM1.79m | 8:00AM1.57m | 6:27PM1.89m | |||||||||
Low Tide | 7:07PM0.64m | 5:35AM1.11m | 8:21PM0.72m | 5:02AM1.22m | 10:05PM0.74m | 11:35PM0.67m | 10:10AM1.43m | 00:29AM0.57m | 11:54AM1.34m | 1:05AM0.49m | 12:40PM1.21m | 1:34AM0.42m | ||||||||
— | — | 6:33 | — | — | 6:33 | — | — | 6:33 | — | — | 6:35 | — | — | 6:35 | — | — | 6:35 | — | — | |
6:54 | — | — | 6:53 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:49 | — | — | 6:46 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 20 | 21 | 21 | 20 | 21 | 21 | 19 | 21 | 22 | 21 | 22 | 22 | 21 | 22 | 22 | 20 | 21 | 21 | 20 |
Feels °C | 21 | 21 | 20 | 20 | 20 | 21 | 20 | 19 | 21 | 21 | 21 | 22 | 21 | 22 | 22 | 21 | 21 | 20 | 19 | 21 |
Swell 1 Height (m) Direction Period (s) | W 9 | W 8 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SW 19 | SW 19 | SSW 13 | SW 18 | SW 18 | SW 18 | SW 18 | SW 18 | W 6 | SW 17 | SW 17 | SW 16 |
76 | 35 | 475 | 339 | 366 | 284 | 272 | 376 | 303 | 303 | 139 | 379 | 375 | 375 | 522 | 522 | 68 | 625 | 618 | 521 | |
Swell 2 Height (m) Direction Period (s) | SW 16 | SW 16 | W 8 | W 6 | SW 13 | SW 21 | SW 21 | SW 21 | SSW 14 | SSW 13 | SW 19 | SSW 13 | W 6 | W 6 | W 6 | S 12 | SW 17 | W 7 | W 7 | W 6 |
157 | 157 | 18 | 9 | 85 | 160 | 160 | 212 | 180 | 158 | 299 | 137 | 24 | 30 | 36 | 76 | 499 | 77 | 77 | 41 | |
Swell 3 Height (m) Direction Period (s) | SSW 20 | SSW 18 | S 9 | S 9 | SSW 9 | S 8 | SSW 12 | W 4 | W 5 | S 11 | W 5 | W 6 | SSW 13 | SSW 12 | SSW 12 | SW 12 | S 12 | SSW 12 | SSW 12 | SSW 12 |
127 | 110 | 25 | 25 | 28 | 13 | 28 | 6 | 15 | 20 | 18 | 24 | 95 | 85 | 56 | 6 | 77 | 48 | 46 | 44 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | SSW 8 | — | — | W 6 | — | — | — | — | — | W 6 | — | — | — | — |
— | — | — | — | — | — | 28 | — | — | 15 | — | — | — | — | — | 38 | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 91 | 0 | 44 | 44 | 0 | 44 | 43 | 3 | 43 | 43 | 7 | 43 | 44 | 0 | 44 | 172 | 0 | 44 | 44 | 0 |
Best forecast wave conditions in San Diego County | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
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Information about the Cardiff Reef Surf forecast
The above surf forecast table for Cardiff Reef provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Cardiff Reef can be found by selecting the local surf guide option on the grey menu. Our Cardiff 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 (Cardiff 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 Cardiff 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.
Cardiff Reef is 3 km (2 miles) from the city of Encinitas. If you plan a vacation in San Diego County, look for hotels and other accommodation in Encinitas. Encinitas has rooms for a wide range of budgets as well as car hire and transport links.










