
Surf Forecasts:
Jaco Beach surf forecast from 5 Sep 2026:
- Best quality surf: Saturday 5 Sep, 6AM (local time) - 5ft (1.6m), 16s period, SW swell with glassy winds.
- Most powerful swell: Saturday 5 Sep, 9AM (local time) - 5ft (1.6m), 16s period, SW swell with 1,317 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 6AM (local time) - 5ft (1.6m), 16s 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 Saturday (Sep 05) at 6AM. The primary swell is predicted to be 1.6m and 16s period with a secondary swell of 0.3m and 9s. 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 1.6m 16s and forecast to arrive on Saturday (Sep 05) at 9AM. Winds are predicted to be glassy at the time the swell arrives.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Sat 5th Sep) | 5ft (1.6m) 16s |
| Best Surf | 6AM (Sat 5th Sep) | 5ft (1.6m) 16s |
| Most Powerful | 9AM (Sat 5th Sep) | 5ft (1.6m) 16s |
Table - best surf conditions forecast for Jaco Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s shaping up for us. We’ve got a solid run of surf ahead, with the best conditions lining up early on before things settle back into a more mellow pattern.
The pick of the 16-day window is without a doubt Saturday morning, September 5th. Jaco Beach is showing a solid 5 ft SW swell with a 16-second period, and that’s pumping out strong wave energy (1342). The wind is dead calm and glassy, which is as good as it gets. This is excellent surf for experienced surfers – it’s got the power and the clean face, so if you’re comfortable on a bigger wave, be there at dawn. The water temp is about average for the time of year, nothing unusual there.
Following that, Sunday morning September 6th is another strong option. The swell drops a touch to 4 ft from the SW (732), but it’s still a good size and the period stays at 14s. The wind is glassy again, light from the NNW, so expect clean, well-shaped waves. This is a very good morning for surfers of intermediate skill and above.
Monday morning September 7th offers a smaller 3 ft SW swell (410), but the wind is glassy from the S, making for clean, fun waves. Not a standout, but a solid session if you’re chasing a longboard or a small-wave board.
From there, the surf drops off noticeably through the middle of the week. By Tuesday and Wednesday, we’re looking at waves around 2 ft to 3 ft. The mornings are glassy or clean, but afternoons turn into a cross-onshore mess with storm risks. The energy drops into the low hundreds. It’s a bit of a lull for a few days.
On Thursday morning September 10th, things perk back up. We get a 4 ft SW swell, 17-second period, with glassy conditions – that’s a return to very good surf, with moderate wave energy (911). Friday morning September 11th is similar, with a 4 ft SW swell (588) and glassy wind. Both are worth a paddle out.
After that, the pattern fades. From September 12th through the 17th, the swell drops to 1 ft–3 ft. The mornings are mostly glassy, but the afternoons are consistently ruined by onshore wind and showers. The energy is low, mostly in the 200–400 range. It’s a long, mellow stretch.
Then, Sunday morning September 20th is the real sleeper at the end of the window. We see a 3 ft SW swell with a 19-second period, glassy wind, and a nice jump in energy to 708. This is very good quality for a smaller wave, so if you’re patient, that’s a morning to mark on your calendar.
Right, I’m signing off. Keep an eye on the glassy mornings and don’t sleep on that Saturday. Rusty out.
Short Range ForecastHeavy rain (total 52mm), heaviest during Sun night. Warm (max 29°C on Sat morning, min 26°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 22mm), heaviest during Thu afternoon. Warm (max 29°C on Tue morning, min 26°C on Mon night). Wind will be generally light. | ||||||||||||||||||
Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | ||||||||||||||
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 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 18 | SSW 17 | SW 16 | SW 16 | SW 16 | SW 18 | SW 17 | SW 16 | SW 16 |
Wave Graph | |||||||||||||||||||
1225 | 1317 | 1193 | 788 | 676 | 453 | 447 | 363 | 299 | 245 | 249 | 193 | 306 | 371 | 310 | 679 | 861 | 737 | 635 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | cross-on | glassy | glassy | cross-on | cross-off | glassy | on | cross-on | cross-off | cross | glassy | glassy | cross-on | glassy | glassy | cross | glassy |
High Tide | 8:27AM2.45m | 9:10PM2.14m | 9:39AM2.37m | 10:31PM2.15m | 10:58AM2.38m | 11:47PM2.27m | 12:10PM2.45m | 00:52AM2.46m | 1:12PM2.57m | 1:46AM2.65m | 2:05PM2.68m | 2:33AM2.81m | |||||||
Low Tide | 2:04AM0.62m | 2:58PM0.57m | 3:16AM0.72m | 4:13PM0.60m | 4:37AM0.73m | 5:28PM0.54m | 5:54AM0.64m | 6:33PM0.42m | 7:00AM0.49m | 7:28PM0.29m | 7:55AM0.33m | 8:17PM0.18m | |||||||
— | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | |
— | — | 5:45 | — | — | 5:44 | — | — | 5:44 | — | — | 5:43 | — | — | 5:42 | — | — | 5:42 | — | |
mm | 6 | — | 4 | 13 | — | 3 | 26 | — | — | — | — | 4 | 1 | — | 6 | 2 | — | 9 | 1 |
Temp °C | 28 | 29 | 29 | 28 | 29 | 29 | 27 | 27 | 27 | 27 | 29 | 29 | 28 | 29 | 29 | 28 | 28 | 28 | 28 |
Feels °C | 33 | 33 | 33 | 33 | 32 | 33 | 31 | 32 | 31 | 31 | 33 | 33 | 33 | 32 | 33 | 33 | 33 | 31 | 33 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 16 | SW 16 | SW 16 | SW 18 | SW 17 | SW 16 | SW 16 |
1225 | 1317 | 1193 | 788 | 676 | 453 | 447 | 363 | 299 | 245 | 202 | 172 | 306 | 371 | 310 | 679 | 861 | 737 | 635 | |
Swell 2 Height (m) Direction Period (s) | S 11 | W 9 | W 9 | S 6 | SSW 6 | SSW 6 | SSW 7 | S 7 | S 6 | WSW 6 | SW 18 | SSW 17 | SW 11 | SW 12 | SW 13 | S 11 | S 10 | S 10 | S 10 |
22 | 14 | 14 | 21 | 44 | 60 | 77 | 31 | 20 | 22 | 249 | 193 | 64 | 68 | 80 | 37 | 32 | 50 | 70 | |
Swell 3 Height (m) Direction Period (s) | W 8 | S 12 | SW 21 | S 10 | W 8 | SSW 15 | W 10 | WSW 6 | SW 6 | S 6 | WSW 6 | WSW 7 | W 7 | W 10 | SW 19 | W 7 | W 10 | W 10 | W 10 |
12 | 11 | 18 | 18 | 12 | 85 | 8 | 16 | 19 | 19 | 31 | 26 | 23 | 52 | 133 | 8 | 18 | 8 | 8 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | WSW 7 | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | 17 | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 151 | 0 | 0 | 145 | 36 | 0 | 9 | 1 | 0 | 36 | 0 | 0 | 144 | 0 | 0 | 176 | 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.










