
Surf Forecasts:
Guiones surf forecast from 30 Jul 2026:
- Best quality surf: Thursday 30 Jul, 9PM (local time) - 4ft (1.2m), 14s period, SW swell with offshore winds.
- Most powerful swell: Thursday 30 Jul, 3PM (local time) - 4ft (1.2m), 14s period, SW swell with 589 kJ wave energy.
- Next surfable swell (1★+): Thursday 30 Jul, 9PM (local time) - 4ft (1.2m), 14s period with SW swell.
Best Forecast Surf Conditions for Guiones this week:
The surf forecast for Guiones over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Jul 30) at 9PM. The primary swell is predicted to be 1.2m and 14s period with a secondary swell of 0.2m and 11s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Guiones in the next 16 days are 1.2m 14s and forecast to arrive on Thursday (Jul 30) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 5s period and expected on Sunday (Aug 02) at 12AM.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Thu 30th Jul) | 4ft (1.2m) 14s |
| Best Surf | 9PM (Thu 30th Jul) | 4ft (1.2m) 14s |
| Most Powerful | 3PM (Thu 30th Jul) | 4ft (1.2m) 14s |
Table - best surf conditions forecast for Guiones over the next 16 days.
The Lowdown
Alright, folks, let’s talk about Guiones. The water’s a balmy 86°, a touch warmer than usual for this time of year – feels like a tropical bath.
The surf starts proper on Thursday morning, July 30th. It’s clear, with a light offshore breeze from the NE and a 4ft SW swell rolling in at a long 14 seconds. That’s a quality groundswell with a solid moderate energy level (694). It’s a standout for the week. The wind is offshore and it’s clean, so you’ll be looking at lined-up waves peeling off the bank. This is the best wave of the near-term, no question. The afternoon sees the wind swing around to the south, getting cross-on, and the quality drops off fast.
Friday morning, July 31st, is another clean start with a lighter 3ft SW swell, still that long 14-second period. The offshore breeze is lighter, but the surf is still good. It’s a good session for a beginner board, but the real power is missing. The afternoons remain a write-off with cross-on wind.
Saturday and Sunday mornings, August 1st and 2nd, are clean and glassy – the Sunday morning is absolutely glassy, with a tiny 2ft SW swell but a very long 15-second period. That’s a proper groundswell, and it’ll be clean as a whistle, but the size is small. It’s a longboard special.
The real standout for the entire outlook is shaping up for the second week. Look at Saturday morning, August 8th – a 3ft SSW swell, period of 16 seconds, and a clean offshore wind from the NE. The energy is strong (633). That’s a pure, clean line-up. Then, Wednesday morning, August 12th, is a cracker: 3ft SW swell, 18-second period, and a light offshore breeze. The energy is high (580). That’s a long-period groundswell that will wrap beautifully into the point. It’s the pick of the whole run.
There’s a long gap of very ordinary afternoons and some smaller days in between, but don’t let that fool you. The mornings are where it’s at. The 12th and 13th August mornings are both very good, with the 13th showing a 3ft SW swell, 16-second period, and clean conditions. The 14th August morning is also very good with a 3ft SW swell and 15-second period.
Crowds are listed as “often” at Guiones, so expect company, especially on those clean morning windows. It’s a consistent, exposed beginner-to-intermediate spot, so it’s a popular choice. The wave quality will be worth the line-up.
There’s a big gap in the middle of the second week where the wind turns onshore and the quality plummets, but the mornings are the clear winners. This is a classic case of the morning being the only show in town.
Alright, that’s the story. Get on it, but get up early.
Rusty.
Short Range ForecastLight rain (total 9mm), mostly falling on Fri night. Warm (max 31°C on Thu morning, min 26°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 22mm), heaviest during Sun night. Warm (max 29°C on Mon morning, min 26°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | |||||||||||||||
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) | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SSW 13 | SW 13 | SW 13 | SW 12 | SW 15 | SW 15 | SW 14 | SW 13 | SW 13 | SSW 13 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | S 8 | SW 14 |
Wave Graph | |||||||||||||||||||||
667 | 589 | 485 | 357 | 342 | 290 | 238 | 234 | 147 | 137 | 209 | 167 | 299 | 208 | 111 | 112 | 94 | 87 | 85 | 63 | 73 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-on | off | off | cross-on | cross-off | off | cross | off | glassy | cross | glassy | glassy | on | glassy | cross | on | glassy | off | on | cross-off |
High Tide | 3:20PM2.07m | 3:51AM2.03m | 3:57PM2.09m | 4:26AM2.10m | 4:34PM2.08m | 5:01AM2.14m | 5:11PM2.05m | 5:36AM2.16m | 5:49PM2.00m | 6:13AM2.16m | 6:30PM1.93m | 6:55AM2.14m | 7:16PM1.85m | ||||||||
Low Tide | 9:13AM0.47m | 9:37PM0.28m | 9:52AM0.43m | 10:11PM0.26m | 10:30AM0.40m | 10:45PM0.26m | 11:08AM0.38m | 11:19PM0.28m | 11:47AM0.38m | 11:54PM0.32m | 12:29PM0.39m | 00:34AM0.37m | 1:15PM0.41m | 1:19AM0.42m | |||||||
5:31 | — | — | 5:31 | — | — | 5:31 | — | — | 5:31 | — | — | 5:31 | — | — | 5:31 | — | — | 5:31 | — | — | |
— | 6:06 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:04 | — | — | 6:04 | — | |
mm | — | — | — | — | — | 5 | — | 2 | 2 | — | 1 | 4 | — | 2 | 3 | 2 | 3 | 7 | — | 4 | 2 |
Temp °C | 31 | 31 | 28 | 30 | 30 | 28 | 31 | 29 | 27 | 28 | 28 | 27 | 29 | 29 | 27 | 29 | 29 | 28 | 29 | 29 | 27 |
Feels °C | 33 | 33 | 31 | 32 | 33 | 32 | 34 | 33 | 30 | 32 | 31 | 31 | 33 | 32 | 32 | 33 | 33 | 32 | 31 | 33 | 31 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SSW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 15 | S 7 | SW 13 | SW 13 | SSW 7 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | S 8 | S 8 |
667 | 589 | 485 | 357 | 342 | 290 | 238 | 234 | 147 | 110 | 209 | 64 | 299 | 208 | 73 | 112 | 94 | 87 | 85 | 63 | 65 | |
Swell 2 Height (m) Direction Period (s) | S 7 | WNW 10 | S 6 | S 7 | SSW 7 | S 7 | S 12 | SW 16 | SW 16 | S 7 | S 7 | SW 12 | S 7 | SSW 7 | SSW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 6 |
23 | 9 | 12 | 16 | 18 | 17 | 72 | 91 | 124 | 35 | 48 | 118 | 47 | 49 | 111 | 38 | 74 | 73 | 50 | 49 | 14 | |
Swell 3 Height (m) Direction Period (s) | NW 10 | W 12 | WNW 11 | WNW 11 | WNW 12 | WNW 11 | NW 12 | S 7 | S 7 | SW 15 | SSW 11 | SW 14 | WNW 10 | SW 16 | SW 13 | SW 13 | SW 16 | SW 12 | SW 15 | SW 15 | SW 14 |
4 | 3 | 12 | 25 | 27 | 24 | 35 | 15 | 14 | 137 | 85 | 167 | 19 | 68 | 84 | 44 | 85 | 22 | 54 | 34 | 73 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | N 5 | — | — | — | — | — | — | — | — | — | — | SW 6 | — |
— | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — | 15 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 19 | 0 | 0 | 39 | 0 | 0 | 29 | 0 | 0 | 104 | 0 | 0 | 39 | 0 | 7 | 31 | 0 | 0 | 31 | 0 |
Best forecast wave conditions in Guanacaste | |||||||||||||||||||||
Best forecast wave conditions in Costa Rica | |||||||||||||||||||||
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Information about the Guiones Surf forecast
The above surf forecast table for Guiones provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Guiones can be found by selecting the local surf guide option on the grey menu. Our Guiones 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 (Guiones) 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 Guiones 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.
Guiones is 34 km (21 miles) from Nicoya. If you plan a holiday in Guanacaste, look for hotels and other accommodation in Nicoya. Nicoya has rooms for a wide range of budgets as well as car hire and transport links.











