
Surf Forecasts:
Jaco Beach surf forecast from 6 Sep 2026:
- Best quality surf: Sunday 6 Sep, 9AM (local time) - 4.5ft (1.3m), 14s period, SW swell with glassy winds.
- Most powerful swell: Thursday 10 Sep, 3AM (local time) - 4ft (1.2m), 18s period, SW swell with 871 kJ wave energy.
- Next surfable swell (1★+): Sunday 6 Sep, 9AM (local time) - 4.5ft (1.3m), 14s 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 Sunday (Sep 06) at 9AM. The primary swell is predicted to be 1.3m and 14s period with a secondary swell of 0.7m and 6s. 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 1.2m 18s and forecast to arrive on Thursday (Sep 10) at 3AM. 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+) | 9AM (Sun 6th Sep) | 4.5ft (1.3m) 14s |
| Best Surf | 9AM (Sun 6th Sep) | 4.5ft (1.3m) 14s |
| Most Powerful | 3AM (Thu 10th Sep) | 4ft (1.2m) 18s |
Table - best surf conditions forecast for Jaco Beach over the next 16 days.
The Lowdown
Alright, let’s talk about what’s happening at Jaco Beach. This place is super consistent, so even when it’s small there’s usually something to ride.
We’ve got a good run starting right now, Sunday morning the 6th of September. Water temp is about normal for the time of year. There’s a SW groundswell running at 4ft with a long 14-second period, giving the waves plenty of punch (728). The wind is glassy out of the WNW at just 3 mph, so it’s gonna be clean. This is a standout session – a great way to kick things off.
Sunday afternoon gets a bit tricky with cross-onshore wind and a chance of thunderstorms. Monday morning the 7th is another glassy one with the wind light from the east. Swell drops to 3ft, but that long period from the SW keeps it fun (574). Monday afternoon brings a bigger 6ft swell, but the period drops to 8 seconds, so it’ll be a bit lumpy. Still, the wind goes glassy, so there might be a few for the keen.
Tuesday morning the 8th is small and clean with a 2ft, 18-second groundswell (488). That’s a very long period, so those waves will have plenty of energy and longer lulls between sets – great for a relaxing session. Being a beach break, that long period might make it wall up a bit, but the offshore glassy conditions will help. Wednesday morning the 9th is another clean, glassy morning with 3ft of SW groundswell (573). Thursday morning the 10th looks like the next real standout: 4ft of SW swell at 17 seconds (921) and glassy ENE wind. That’s going to be clean, powerful, and fun.
Friday morning the 11th is similar, with 4ft and 16-second period (709) under glassy easterly wind. The weekend mornings the 12th and 13th are both clean but smaller, with 3ft and 2ft respectively. The afternoons get a bit messy, but the mornings are your best bet. The following week sees the swell dropping off, but there are still plenty of glassy mornings with small, long-period SW swells. Monday morning the 14th is tiny at 1ft but with a 19-second period (300) – more of a longboard session. Wednesday morning the 16th is worth a look: 3ft of SW swell at 16 seconds (548) under calm, glassy conditions – that’s a good one.
From Thursday the 17th onwards, the energy fades further. The combined energy values drop into the 200–400 range, meaning the waves are weak. Friday morning the 18th has a 1ft, 21-second period (350) – that’s a very long period groundswell, but with such tiny height it’ll be more like a ripple. The afternoons from the 18th are mostly poor with cross-onshore wind and thunderstorms. The weekend of the 19th and 20th is flat and choppy, nothing worth paddling out for. Monday morning the 21st sees a bit of a rebound with 3ft of SW groundswell at 18 seconds (518) and glassy conditions – that’s a nice surprise to close out the forecast.
Overall, the best surf is definitely on the mornings. The standouts are Sunday the 6th and Thursday the 10th – both have clean, glassy conditions, solid SW groundswell, and good energy. If you can get out on those mornings, you’ll be stoked.
Rusty.
Short Range ForecastHeavy rain (total 56mm), heaviest during Sun night. Warm (max 28°C on Sun morning, min 25°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 25mm), heaviest during Wed afternoon. Warm (max 29°C on Wed morning, min 26°C on Tue night). Wind will be generally light. | ||||||||||||||||||
Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | ||||||||||||||
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 15 | SW 14 | SW 14 | SW 14 | SW 14 | S 8 | SW 13 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 |
Wave Graph | |||||||||||||||||||
788 | 676 | 453 | 447 | 363 | 418 | 249 | 249 | 232 | 306 | 371 | 310 | 781 | 861 | 737 | 635 | 619 | 492 | 346 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | glassy | cross-on | cross-off | glassy | glassy | cross | glassy | cross | glassy | glassy | cross-on | glassy | glassy | cross-on | cross-off | glassy | cross | off |
High Tide | 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 | 2:52PM2.75m | ||||||||
Low Tide | 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 | 8:44AM0.21m | 9:01PM0.12m | |||||||
— | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | |
— | — | 5:44 | — | — | 5:44 | — | — | 5:43 | — | — | 5:42 | — | — | 5:42 | — | — | 5:40 | — | |
mm | 12 | — | 3 | 35 | 1 | 2 | — | — | 3 | 3 | — | 6 | 3 | — | 7 | 1 | — | 5 | 4 |
Temp °C | 27 | 28 | 28 | 27 | 28 | 27 | 26 | 28 | 28 | 28 | 29 | 29 | 27 | 29 | 29 | 28 | 29 | 29 | 28 |
Feels °C | 32 | 31 | 31 | 31 | 32 | 31 | 30 | 32 | 32 | 34 | 32 | 32 | 31 | 32 | 32 | 33 | 32 | 32 | 32 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 14 | SW 14 | SW 14 | SSW 6 | S 8 | SSW 7 | SSW 6 | SW 13 | SW 16 | SW 16 | SW 16 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 |
788 | 676 | 453 | 447 | 114 | 418 | 141 | 37 | 172 | 306 | 371 | 310 | 781 | 861 | 737 | 635 | 619 | 492 | 346 | |
Swell 2 Height (m) Direction Period (s) | S 6 | SW 6 | SSW 7 | SSW 7 | SW 14 | SW 13 | SW 13 | SW 13 | SW 17 | SW 11 | SW 12 | SW 13 | WSW 6 | S 10 | S 10 | S 10 | S 11 | S 9 | SSW 6 |
30 | 35 | 93 | 113 | 363 | 299 | 249 | 202 | 232 | 64 | 68 | 80 | 6 | 52 | 49 | 47 | 82 | 62 | 30 | |
Swell 3 Height (m) Direction Period (s) | S 10 | S 7 | SSW 15 | W 10 | SW 20 | SSW 19 | SSW 18 | SW 18 | S 6 | WSW 6 | SW 20 | SW 19 | WNW 10 | W 10 | W 10 | W 10 | W 10 | SW 7 | S 10 |
18 | 17 | 85 | 8 | 97 | 146 | 126 | 249 | 18 | 6 | 134 | 133 | 10 | 8 | 8 | 8 | 8 | 7 | 17 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | WSW 6 | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | 8 | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 20 | 0 | 145 | 0 | 0 | 0 | 1 | 0 | 75 | 0 | 0 | 151 | 0 | 0 | 132 | 0 | 0 | 57 | 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.










