Surf Forecasts:
Boston Bay surf forecast from 12 Sep 2026:
- Most powerful swell: Thursday 17 Sep, 1PM (local time) - 6ft (1.8m), 8s period, ESE swell with 412 kJ wave energy.
Best Forecast Surf Conditions for Boston Bay this week:
The most powerful waves expected at Boston Bay in the next 16 days are 1.8m 8s and forecast to arrive on Thursday (Sep 17) at 1PM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (EST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1PM (Thu 17th Sep) | 6ft (1.8m) 8s |
Table - best surf conditions forecast for Boston Bay over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s ahead for Boston Bay.
Right off the bat, I gotta be straight with you – this is a rough patch to be a surfer. We’re looking at a solid 16-day stretch, but there’s nothing here that’s going to get the heart pumping. The whole window is a run of small, onshore-affected waves with the occasional bit of rain or lightning to make it worse. The real kicker is that the wind is almost always coming from the east or southeast, straight into the bay. That’s killing any chance of a clean face. We start with Saturday the 12th with a 5ft swell from the ESE at 8 seconds, but the wind is onshore at 12 mph, and the wave energy is only moderate at best (278). It’s messy out there.
Honestly, the best we get is barely surfable. Thursday the 17th morning might be the only time worth even looking at the ocean. The swell bumps up a bit to 5ft from the ESE at 8 seconds, and the energy jumps to a moderate-to-strong 452. The wind is cross-onshore but only a light breeze at 6 mph, so there’ll be some texture on the surface but it won’t be a complete washing machine. Still, that’s the biggest swell of the whole run. It’s not great, but it’s the best of a bad lot. That afternoon the wind shifts to onshore again and drops back to 4ft with conditions that suggest only marginal possibility.
After that, it’s back to small, weak, and choppy. By the 20th of September the swell drops to 3ft with wind over 16 mph cross-onshore, and the energy is way down to 98. We’re talking barely a ripple. The pattern stays the same through the rest of the month. There is a small, brief moment on the 24th of September with a 3ft ESE groundswell at 8 seconds and a lighter cross-onshore breeze from the ENE, but it’s still on the tiny side. The 27th of September morning offers 4ft from the ESE with a light onshore breeze from the E, but again, the wind is blowing right onto it.
The water temperature is about average for this time of year here at Boston Bay. Nothing weird going on there. It’s just the surf that’s the problem. This is a beginner-friendly reef break, and with no waves over five feet, it’s safe enough for anyone to paddle out, but you’ll be bobbing around more than riding.
So, the long and short of it is: there’s no standout session here. No day where the stars align. For the next two weeks, save your wax and wait for a better forecast. Don’t force it.
– Rusty
Short Range ForecastLight rain (total 7mm), mostly falling on Sat night. Warm (max 30°C on Sat morning, min 27°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 13mm), heaviest on Tue night. Warm (max 29°C on Tue morning, min 26°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | |||||||||||||||
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) | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 7 | ESE 7 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 237 | 237 | 179 | 161 | 179 | 179 | 169 | 165 | 157 | 157 | 153 | 130 | 151 | 99 | 111 | 145 | 242 | 207 | 130 | 101 | 98 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | cross-on | on | on | on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | cross-on | cross-on | cross-on |
High Tide | 9:41PM0.28m | 10:34AM0.32m | 10:09PM0.24m | 11:20AM0.30m | 10:33PM0.20m | 12:12PM0.28m | 10:52PM0.17m | 1:20PM0.26m | 10:42PM0.14m | 2:47PM0.25m | 4:07PM0.26m | ||||||||||
Low Tide | 3:59PM0.11m | 3:53AM0.06m | 4:51PM0.13m | 4:20AM0.07m | 5:52PM0.14m | 4:49AM0.07m | 7:17PM0.15m | 5:21AM0.08m | 10:11PM0.14m | 6:07AM0.08m | 7:29AM0.09m | 00:16AM0.11m | |||||||||
 | |  | | | |  | |  | | | | | |  |  | |  | | | | |
 | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — |
 | — | 6:09 | — | — | 6:08 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:06 | — | — | 6:05 | — |
mm | — | — | 2 | — | — | 2 | 1 | — | 2 | 2 | — | 5 | 4 | 2 | — | — | — | — | 1 | 1 | — |
Temp °C | 30 | 29 | 28 | 30 | 29 | 28 | 30 | 29 | 27 | 29 | 29 | 27 | 28 | 28 | 27 | 29 | 28 | 28 | 29 | 28 | 28 |
Feels °C | 32 | 32 | 32 | 33 | 31 | 32 | 33 | 31 | 30 | 32 | 29 | 29 | 29 | 30 | 28 | 31 | 31 | 31 | 32 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | ENE 7 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | E 13 | ESE 7 | ESE 7 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 |
| kJ | 4 | 237 | 179 | 161 | 179 | 179 | 169 | 165 | 157 | 157 | 153 | 130 | 3 | 99 | 111 | 145 | 242 | 207 | 130 | 101 | 98 |
Swell 2 Height (m) Direction Period (s) | — | ENE 7 | NE 7 | NE 6 | NE 6 | NE 6 | NE 6 | NE 6 | NE 6 | NE 5 | NE 6 | NE 5 | — | NE 6 | NE 6 | NE 6 | NE 7 | NE 7 | NE 7 | NE 6 | NE 6 |
| kJ | — | 4 | 11 | 17 | 54 | 23 | 64 | 43 | 15 | 18 | 20 | 9 | — | 9 | 10 | 6 | 23 | 23 | 22 | 30 | 19 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | E 13 | E 13 | — | — | E 12 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 3 | — | — | 3 | — | — | — |
Wind waves Height (m) Direction Period (s) | ESE 8 | — | — | — | — | — | — | — | — | — | — | — | ESE 8 | — | NE 5 | — | — | — | — | — | — |
| kJ | 237 | — | — | — | — | — | — | — | — | — | — | — | 151 | — | 4 | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 847 | 954 | 34 | 665 | 804 | 34 | 793 | 804 | 34 | 803 | 1072 | 34 | 617 | 401 | 40 | 803 | 807 | 40 | 803 | 801 | 34 |
Best forecast wave conditions in Jamaica | |||||||||||||||||||||
Best forecast wave conditions in Jamaica | |||||||||||||||||||||
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Information about the Boston Bay Surf forecast
The above surf forecast table for Boston Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Boston Bay can be found by selecting the local surf guide option on the grey menu. Our Boston 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 (Boston 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 Boston 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 Jamaica? If you are looking for accommodation near Boston Bay, camping, hotels and holiday cottages in Jamaica, consider staying in Port Antonio which is 5 km (3 miles) away. Other places in and around Jamaica where you can find information about places to rent, and car hire include Rocky Point which is 29 km (18 miles) away, New Kingston, Kingston and Half Way Tree.
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