- Forecast
- Maps
- Live
- Weather State
- Spot Information
Guana Bay Surf Forecast
/ Saint Martin (9 surf breaks) /
Surf Forecasts:
Guana Bay surfForecast / Saint Martin / Netherlands Antilles
16 Day Weather and Surf, issued 1 pm Friday 20 Mar 2026 ASTForecast update in hr min s Forecast update imminent
Guana Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Guana Bay sea temperature is
26.3° C
(Which is normal for this time of year)Best Forecast Surf Conditions for Guana Bay this week:
The surf forecast for Guana Bay over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Mar 22) at 2AM. The primary swell is predicted to be 1.5m and 9s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Guana Bay in the next 16 days are 1.7m 10s and forecast to arrive on Saturday (Mar 21) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 10s period and expected on Friday (Mar 27) at 11AM.
| Wave Type | Time (AST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Sun 22nd Mar) | 5ft (1.5m) 9s |
| Best Surf | 2AM (Sun 22nd Mar) | 5ft (1.5m) 9s |
| Most Powerful | 2AM (Sat 21st Mar) | 5.5ft (1.7m) 10s |
Table - best surf conditions forecast for Guana Bay over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Some drizzle, heaviest during Mon morning. Warm (max 25°C on Fri afternoon, min 24°C on Sat night). Wind will be generally light. | Days 3-6 Weather Summary Moderate rain (total 11mm), heaviest on Mon night. Warm (max 25°C on Mon afternoon, min 24°C on Mon night). Winds increasing (light winds from the ENE on Mon afternoon, fresh winds from the E by Wed night). | ||||||||||||||||||||||
Fri 20 | Saturday 21 | Sunday 22 | Monday 23 | Tuesday 24 | Wednesday 25 | Thursday 26 | |||||||||||||||||
| PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |||
Rating (10 max) | |||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||||
| Period(s) (?) | 9 | 10 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 13 | 12 | 12 | 11 | 11 | 11 | 11 | 6 | 6 | 7 | 7 | ||
Wave (?)Graph  | |||||||||||||||||||||||
 kJ (?) | 521 | 497 | 415 | 337 | 315 | 277 | 228 | 161 | 69 | 70 | 144 | 151 | 240 | 205 | 168 | 194 | 92 | 146 | 132 | 222 | 233 | ||
Wind (km/h) | |||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | cross- on | glass | cross- on | cross | cross- on | on | cross- on | on | on | on | on | on | on | on | on | on | on | on | ||
High Tide / height (m) | 9:44PM 0.36 | 8:38AM 0.24 | 10:46PM 0.37 | 8:52AM 0.22 | 11:47PM 0.38 | 8:49AM 0.21 | 12:48AM 0.38 | 1:49AM 0.37 | 2:49AM 0.36 | 3:47AM 0.35 | 1:24PM 0.22 | ||||||||||||
Low Tide / height (m) | 2:23PM 0.10 | 3:59AM 0.19 | 3:00PM 0.06 | 5:15AM 0.20 | 3:41PM 0.03 | 6:58AM 0.21 | 4:28PM 0.01 | 5:19PM 0.01 | 6:17PM 0.01 | 7:23PM 0.03 | 11:28AM 0.22 | ||||||||||||
Fri 20 | Saturday 21 | Sunday 22 | Monday 23 | Tuesday 24 | Wednesday 25 | Thursday 26 | |||||||||||||||||
| Sunrise | - | - | 6:15 | - | - | 6:13 | - | - | 6:13 | - | - | 6:13 | - | - | 6:11 | - | - | 6:11 | - | - | 6:09 | ||
| Sunset | 6:22 | - | - | 6:22 | - | - | 6:22 | - | - | 6:22 | - | - | 6:22 | - | - | 6:23 | - | - | 6:23 | - | - | ||
 |  | | | | | | |  | |  |  | | | | | | | | |  | |||
Rain (mm) | - | - | - | - | - | - | - | - | 1 | 2 | 4 | 1 | 1 | 2 | - | - | - | 1 | - | - | - | ||
| Temp. °C | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | ||
| Feels °C (?) | 23 | 24 | 25 | 25 | 27 | 28 | 28 | 27 | 27 | 27 | 26 | 25 | 26 | 24 | 23 | 24 | 24 | 23 | 23 | 23 | 22 | ||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Guana Bay surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Guana Bay Surf forecast
The above surf forecast table for Guana Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Guana Bay can be found by selecting the local surf guide option on the grey menu. Our Guana Bay 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 (Guana Bay) 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 Guana Bay 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 Netherlands-Antilles - Saint Martin? If you are looking for accommodation near Guana Bay, camping, hotels and holiday cottages in Netherlands-Antilles - Saint Martin, consider staying in Marigot which is 7 km (4 miles) away. Other places in and around Netherlands-Antilles - Saint Martin where you can find information about places to rent, and car hire include Philipsburg which is 9 km (6 miles) away, The Valley, Gustavia and Basseterre.
Nearest