Surf Forecasts:
Seaside Reef surf forecast from 14 Aug 2026:
- Best quality surf: Tuesday 18 Aug, 5AM (local time) - 3ft (0.9m), 16s period, SSW swell with glassy winds.
- Most powerful swell: Saturday 15 Aug, 2AM (local time) - 4.5ft (1.3m), 17s period, SSW swell with 921 kJ wave energy.
- Next surfable swell (1★+): Tuesday 18 Aug, 2AM (local time) - 3ft (0.9m), 14s period with SSW swell.
Best Forecast Surf Conditions for Seaside Reef this week:
The surf forecast for Seaside Reef over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 18) at 2AM. The primary swell is predicted to be 0.9m and 14s period with a secondary swell of 1.0m and 7s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Seaside Reef in the next 16 days are 1.3m 17s and forecast to arrive on Saturday (Aug 15) at 2AM. 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+) | 2AM (Tue 18th Aug) | 3ft (0.9m) 14s |
| Best Surf | 5AM (Tue 18th Aug) | 3ft (0.9m) 16s |
| Most Powerful | 2AM (Sat 15th Aug) | 4.5ft (1.3m) 17s |
Table - best surf conditions forecast for Seaside Reef over the next 16 days.
The Lowdown
G’day, it’s Rusty here. Let’s be straight with you—this stretch is a test of patience. We’ve got a prolonged flat spell ahead, and I mean a proper one. From now until around the 26th, you’re looking at a whole lot of nothing. There are no good waves on the table, and the odd bump in the water is going to be weak, short-period slop that’s more frustration than fun. The combined energy is just pitiful, mostly hovering in the 300 to 500 range, and the odd push to 700 is still not pulling the trigger on anything ridable. It’s a real dry run, and if you’re not used to this, it might feel bleak. But hold on, because there’s a light at the end of this tunnel.
First up, we’ve got Seaside Reef (San Diego). This is a reef break, exposed to the west, and it’s an advanced, inconsistent wave. The good news is the swell direction out of the southwest is in its sweet spot, so when it does come alive, it’s got the right idea. But for the next week and a half, it’s just not happening. The water temp is about average for this time of year, so no real surprises there.
Going through the days: Friday the 14th, we’ve got a 2ft SSW swell with an 18-second period—that long period is a positive for shape, but the size just isn’t there, and the energy is weak at 583. The wind is a gentle westerly, but the wave comment is "marginal" at best. Same story for the rest of the weekend and into next week. The swell hangs around 2ft to 4ft, period drops to the 13-16 second range, and the energy stays weak. The wind stays light, sometimes cross-onshore, but it’s all just pushing around whitewater. This is a proper blank run.
We’re looking at a gap of over a week with zero worthwhile surf. The 23rd sees a 2ft SW with an 19-second period, but again, it’s too small and weak. The 26th starts to show a slight pulse, with an S swell pushing up to 4ft by the afternoon, and the energy climbing to 767, but it’s still only rated as “marginal.”
Then, things finally change. Thursday the 27th kicks off the real action. We’re seeing that S swell jump to 6ft, with a 14-second period. The combined energy is now strong, hitting 1514 in the morning and 1585 in the afternoon. This is the first time we’re talking real, rideable surf. The wind is light and onshore early, but it’s clean. This is the standout in the whole window, the one you set your alarm for. It’s a bit much for beginners at this size, but for the crew that knows their way around a reef, this is going to be a proper session.
Friday the 28th is the bigger day, size-wise. The swell builds to 8ft, still from the SSW, with a 14-second period. The energy is pumping at 2294 in the morning and 1930 in the afternoon. This is big, powerful surf. It’s expert territory, no doubt. If it’s too gnarly for you on the reef, this kind of swell and wind is going to make the beachies look more like a kite-surfing playground than a paddle zone. The wind is light, but the power is serious.
Saturday the 29th sees the swell easing back to 6ft, with a period of 11 seconds, and the energy dropping to 921. Still rideable and cleaner, but it’s the tail end of the pulse.
So, here’s the plan: suffer through the flat spell, and get ready for the 27th and 28th. That’s your window. Thursday the 27th is probably the pick for quality, with Friday the 28th being the heavy hitter for size. Long-range calls are promising but less certain, so keep an eye on it. Stay patient.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Fri morning, min 19°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 25°C on Tue afternoon, min 21°C on Mon morning). Wind will be generally light. | ||||||||||||||||||||
Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | |||||||||||||||
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 18 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 16 | SSW 17 | SSW 15 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 |
Wave Graph | |||||||||||||||||||||
292 | 404 | 921 | 417 | 683 | 666 | 493 | 443 | 367 | 330 | 264 | 321 | 232 | 243 | 339 | 382 | 387 | 242 | 236 | 236 | 170 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | on | on | cross-on | on | on | cross | on | on | glassy | on | on | glassy | cross-on | cross-on | glassy | cross-on | cross-on | cross-on |
High Tide | 11:18AM1.93m | 10:59PM2.09m | 11:51AM1.96m | 11:44PM1.85m | 12:25PM1.96m | 00:33AM1.60m | 1:00PM1.93m | 1:34AM1.37m | 1:40PM1.88m | 3:22AM1.21m | 2:32PM1.82m | 3:46PM1.79m | |||||||||
Low Tide | 4:59PM0.72m | 5:28AM0.35m | 5:50PM0.72m | 5:57AM0.56m | 6:45PM0.75m | 6:23AM0.77m | 7:50PM0.79m | 6:46AM0.96m | 9:14PM0.81m | 7:00AM1.12m | 10:58PM0.76m | 00:18AM0.65m | |||||||||
6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:15 | — | — | |
— | 7:36 | — | — | 7:34 | — | — | 7:32 | — | — | 7:31 | — | — | 7:30 | — | — | 7:30 | — | — | 7:29 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 22 | 20 | 22 | 22 | 20 | 22 | 23 | 21 | 24 | 24 | 22 | 24 | 25 | 23 | 25 | 25 | 22 | 25 | 25 | 23 |
Feels °C | 23 | 22 | 20 | 22 | 22 | 20 | 22 | 23 | 21 | 24 | 23 | 23 | 25 | 25 | 25 | 26 | 25 | 24 | 26 | 25 | 25 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | W 6 | W 7 | W 8 | WNW 8 | SSW 15 | W 7 | SSW 16 | SSW 15 | W 7 | W 7 | W 7 |
255 | 404 | 921 | 417 | 683 | 666 | 493 | 443 | 367 | 330 | 66 | 89 | 121 | 118 | 339 | 86 | 387 | 242 | 83 | 66 | 52 | |
Swell 2 Height (m) Direction Period (s) | SSW 18 | SW 14 | S 12 | SW 14 | S 11 | W 5 | W 6 | S 10 | W 6 | W 6 | SSW 14 | SSW 14 | SSW 16 | SSW 17 | W 9 | SSW 16 | W 7 | W 7 | SSW 14 | SSW 14 | SSW 14 |
292 | 251 | 43 | 191 | 37 | 19 | 23 | 18 | 40 | 47 | 264 | 321 | 232 | 243 | 96 | 382 | 61 | 43 | 236 | 236 | 170 | |
Swell 3 Height (m) Direction Period (s) | S 11 | S 11 | WSW 8 | S 11 | W 11 | S 11 | S 11 | W 11 | S 10 | S 10 | SSW 18 | S 9 | SSW 13 | SSW 13 | SW 19 | SW 20 | W 14 | SW 18 | SW 19 | WNW 13 | WNW 12 |
36 | 61 | 12 | 38 | 10 | 20 | 20 | 9 | 8 | 8 | 32 | 7 | 114 | 98 | 15 | 16 | 4 | 50 | 56 | 17 | 27 | |
Wind waves Height (m) Direction Period (s) | — | W 7 | — | WNW 4 | W 5 | — | — | W 5 | WNW 6 | — | — | — | — | — | — | — | — | — | — | — | — |
— | 9 | — | 6 | 11 | — | — | 29 | 55 | — | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 42 | 42 | 12 | 42 | 42 | 41 | 42 | 42 | 12 | 41 | 42 | 0 | 41 | 42 | 0 | 42 | 42 | 0 | 42 | 42 | 15 |
Best forecast wave conditions in San Diego County | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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Information about the Seaside Reef Surf forecast
The above surf forecast table for Seaside Reef provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Seaside Reef can be found by selecting the local surf guide option on the grey menu. Our Seaside 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 (Seaside 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 Seaside 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.
Seaside Reef is 1 km (1 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.











