
Surf Forecasts:
Jaco Beach surf forecast from 15 Sep 2026:
- Best quality surf: Tuesday 15 Sep, 6PM (local time) - 2.5ft (0.8m), 17s period, SW swell with offshore winds.
- Most powerful swell: Monday 21 Sep, 9AM (local time) - 3ft (0.9m), 18s period, SW swell with 516 kJ wave energy.
- Next surfable swell (1★+): Tuesday 15 Sep, 12AM (local time) - 2ft (0.6m), 18s period with SW swell.
Best Forecast Surf Conditions for Jaco Beach this week:
The surf forecast for Jaco Beach over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Sep 15) at 12AM. The primary swell is predicted to be 0.6m and 18s period with a secondary swell of 0.8m and 8s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Jaco Beach in the next 16 days are 0.9m 18s and forecast to arrive on Monday (Sep 21) at 9AM. Winds are predicted to be offshore at the time the swell arrives.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Tue 15th Sep) | 2ft (0.6m) 18s |
| Best Surf | 6PM (Tue 15th Sep) | 2.5ft (0.8m) 17s |
| Most Powerful | 9AM (Mon 21st Sep) | 3ft (0.9m) 18s |
Table - best surf conditions forecast for Jaco Beach over the next 16 days.
The Lowdown
Alright, this is Rusty. Let’s talk about what’s coming up for Jaco Beach over the next couple of weeks.
First off, the water is sitting at about 86°, which is a touch warmer than normal for this time of year – you can feel that tropical bathwater when you paddle out.
We’ve got a bit of a slow start, but don’t write it off. The real quality kicks off on the morning of Tuesday the 15th. We’re looking at a clean 2 ft SW groundswell with that sweet, glassy NNE breeze. Only 3 mph – basically no wind. The combined energy is moderate at 410, but the conditions will be pretty as a picture. That’s a great session for a longboard or a funboard, just you and the ocean.
The standout morning of the whole run, though, is Wednesday the 16th. It’s a cracker. The wind is dead calm, glassy as a mirror. The swell bumps up just a touch to 3 ft, still from the SW, with a nice long period of 16 seconds and combined energy at 512 (moderate). This is the morning to call in sick. The break will be working with clean, orderly lines. It’s a very consistent spot, so you won’t be waiting around.
As we move into the weekend of the 20th and 21st, the mornings stay promising. The Sunday morning the 20th has glassy conditions again with 2-3 ft SW swell and energy climbing to 582. Then Monday morning the 21st gives us a 3 ft swell with an offshore ESE breeze at 3 mph, making for clean faces and a combined energy of 619. These are all good, solid options.
Now, looking way ahead – and this is a long-range heads up, so treat it with a pinch of salt – on Friday the 25th of September, the swell is forecast to jump to a powerful 11-12 ft from the SW. The combined energy here is a massive 1971 to 2110, which is strong to very strong wave energy. However, and this is a big *however*, that’s too big for this beach break. The period is short at 9 seconds, and while the wind is offshore, the size will make it a washing machine. This is experts-only territory, and honestly, it looks more interesting for the kite crowd than a standard paddle session. The hangover from that on Saturday the 26th is still 8 ft with glassy conditions – solid for experienced surfers only, with energy at 1805.
After that, the swell drops back to a more manageable 3-5 ft through the 27th and 28th, with clean conditions in the mornings. A nice way to finish the window.
So, the pick of the lot is clear: Wednesday morning the 16th with that glassy, waist-high SW groundswell. The second best is that Monday morning the 21st with the offshore breeze. Get out there.
Stay stoked.
Rusty
Short Range ForecastHeavy rain (total 22mm), heaviest during Tue afternoon. Warm (max 29°C on Tue morning, min 26°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 27mm), heaviest during Sat night. Warm (max 29°C on Thu afternoon, min 26°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Mon 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | ||||||||||||||
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 18 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 14 | SW 14 | SW 14 | SW 14 | SW 20 | SW 20 | SW 19 | SW 19 | SW 21 | SW 18 | SW 19 | SW 19 | SW 18 |
Wave Graph | ||||||||||||||||||||
192 | 252 | 192 | 358 | 310 | 371 | 291 | 251 | 248 | 297 | 238 | 145 | 138 | 184 | 181 | 220 | 269 | 446 | 441 | 370 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | glassy | glassy | cross | off | glassy | cross-on | on | glassy | cross-on | glassy | glassy | cross-on | on | glassy | cross | cross-off | glassy | cross | off |
High Tide | 4:56PM2.65m | 5:12AM2.79m | 5:35PM2.52m | 5:50AM2.64m | 6:15PM2.37m | 6:29AM2.47m | 6:56PM2.20m | 7:12AM2.31m | 7:44PM2.04m | 8:02AM2.15m | 8:44PM1.92m | 9:04AM2.05m | 9:57PM1.87m | |||||||
Low Tide | 11:00PM0.26m | 11:29AM0.24m | 11:38PM0.39m | 12:08PM0.37m | 00:17AM0.54m | 12:50PM0.52m | 00:58AM0.70m | 1:36PM0.68m | 1:46AM0.86m | 2:32PM0.81m | 2:46AM0.98m | 3:40PM0.88m | ||||||||
— | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:26 | — | — | 5:26 | — | — | |
5:38 | — | — | 5:38 | — | — | 5:37 | — | — | 5:37 | — | — | 5:37 | — | — | 5:36 | — | — | 5:35 | — | |
mm | 6 | 1 | — | 9 | 1 | — | 3 | 2 | — | 3 | 5 | — | 1 | 2 | — | 3 | 13 | — | 5 | 14 |
Temp °C | 28 | 28 | 29 | 29 | 27 | 29 | 29 | 28 | 29 | 29 | 27 | 29 | 29 | 28 | 29 | 29 | 28 | 28 | 28 | 26 |
Feels °C | 31 | 33 | 33 | 33 | 30 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 33 | 32 | 33 | 33 | 31 | 29 |
Swell 1 Height (m) Direction Period (s) | S 8 | S 8 | S 8 | S 8 | S 8 | SW 16 | SW 16 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SSW 9 | S 9 | S 9 | SW 18 | SW 19 | SW 19 | SW 18 |
92 | 90 | 90 | 108 | 88 | 371 | 291 | 251 | 248 | 297 | 238 | 138 | 138 | 82 | 56 | 55 | 269 | 446 | 441 | 370 | |
Swell 2 Height (m) Direction Period (s) | SW 18 | SW 18 | SW 18 | SW 17 | SW 16 | S 8 | S 8 | S 8 | S 9 | S 9 | S 8 | S 8 | S 9 | SW 13 | SW 13 | SW 13 | S 6 | S 6 | SSW 6 | S 6 |
192 | 252 | 192 | 358 | 310 | 90 | 88 | 68 | 87 | 78 | 71 | 51 | 56 | 138 | 136 | 134 | 30 | 40 | 40 | 38 | |
Swell 3 Height (m) Direction Period (s) | SW 12 | SW 12 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 | SW 11 | SW 22 | SW 22 | SW 21 | SW 20 | SW 20 | SW 19 | SW 19 | SW 21 | SW 12 | SSW 12 | SW 12 | SW 12 |
52 | 50 | 128 | 109 | 79 | 51 | 50 | 19 | 78 | 118 | 160 | 145 | 136 | 184 | 181 | 220 | 72 | 96 | 69 | 68 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | WSW 6 | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | 3 | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 151 | 0 | 0 | 20 | 0 | 0 | 151 | 16 | 0 | 151 | 0 | 0 | 145 | 14 | 0 | 145 | 0 | 0 | 90 | 0 |
Best forecast wave conditions in Golfo de Nicoya | ||||||||||||||||||||
Best forecast wave conditions in Costa Rica | ||||||||||||||||||||
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Information about the Jaco Beach Surf forecast
The above surf forecast table for Jaco Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Jaco Beach can be found by selecting the local surf guide option on the grey menu. Our Jaco Beach 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 (Jaco Beach) 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 Jaco Beach 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.
Are you planning a holiday in Golfo de Nicoya? If you are looking for accommodation near Jaco Beach, camping, hotels and holiday cottages in Golfo de Nicoya, consider staying in Esparza which is 43 km (27 miles) away. Other places in and around Golfo de Nicoya where you can find information about places to rent, and car hire include San Rafael Abajo which is 45 km (28 miles) away, Tejar, Chacarita and Puntarenas.










