Grand Mere Surf Break

Lat Long: 17.89° N 62.81° W

Grand Mere Surf Forecast and Surf Report

Issued: 1 am 19 Sep 2026 (local time)

Forecast update in  hr  min

Today's Grand Mere sea temperature is
29.3°C
0.7° 

Grand Mere surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Grand Mere surf forecast from 19 Sep 2026:

  • Most powerful swell: Friday 25 Sep, 8AM (local time) - 2.5ft (0.8m), 8s period, ESE swell with 87 kJ wave energy.

Best Forecast Surf Conditions for Grand Mere this week:

The most powerful waves expected at Grand Mere in the next 16 days are 0.8m 8s and forecast to arrive on Friday (Sep 25) at 8AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Wednesday (Sep 23) at 2AM.

Wave TypeTime (AST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 8AM (Fri 25th Sep)2.5ft (0.8m) 8s

Table - best surf conditions forecast for Grand Mere over the next 16 days.


Short Range Forecast

Mostly dry. Warm (max 28°C on Sat morning, min 27°C on Sat morning). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 9mm), mostly falling on Wed night. Warm (max 28°C on Tue morning, min 28°C on Tue morning). Mainly fresh winds.

Saturday
19
Sunday
20
Monday
21
Tuesday
22
Wednesday
23
Thursday
24
Friday
25
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.5
ESE
7
0.4
ESE
8
0.4
ENE
8
0.4
ENE
8
0.4
ENE
8
0.4
ENE
8
0.4
ENE
8
0.4
SE
8
0.3
ESE
8
0.7
ESE
4
0.7
E
5
0.2
ESE
8
0.9
E
6
0.8
E
6
0.4
SE
9
0.4
SE
8
0.4
SE
8
0.4
ESE
8
0.7
ESE
8
0.7
ESE
8
0.6
ESE
7
Wave Graph
Metric surfscale
Energy kJ
30
25
26
24
23
22
22
21
13
16
21
6
63
50
19
18
17
26
56
63
41
Wind (km/h)
15
ESE
10
ESE
10
E
15
ESE
15
SE
20
ESE
20
ESE
20
ESE
25
E
20
E
25
E
30
E
25
E
20
E
25
E
25
E
20
E
20
E
20
ESE
20
E
25
E
Wind State
cross
cross
cross
cross-on
cross-on
cross-on
cross
cross
cross
cross
cross-off
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
High Tide
5:23PM0.53m
5:13PM0.52m
5:05PM0.51m
1:24AM0.46m
5:06PM0.50m
2:45AM0.47m
5:13PM0.49m
3:51AM0.48m
5:21PM0.48m
4:54AM0.50m
5:29PM0.48m
Low Tide
8:39AM0.11m
9:27AM0.11m
11:41PM0.45m
10:05AM0.12m
11:10PM0.42m
10:39AM0.14m
11:13PM0.37m
11:13AM0.18m
11:33PM0.30m
11:48AM0.23m
00:01AM0.23m
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
light rain
thunderstorm
thunderstorm
clear
rain showers
thunderstorm
part cloud
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:58
5:58
5:58
6:00
6:00
6:00
6:00
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:09
6:08
6:07
6:07
6:06
6:06
6:05
 mm
1
5
1
2
1
1
Temp °C
28
28
28
27
28
28
28
28
28
28
28
28
28
28
28
28
28
28
28
28
28
Feels °C
31
30
32
29
30
29
30
29
29
29
29
28
28
29
29
29
30
28
29
30
29
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
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Information about the Grand Mere Surf forecast

The above surf forecast table for Grand Mere provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Grand Mere can be found by selecting the local surf guide option on the grey menu. Our Grand Mere 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 (Grand Mere) 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 Grand Mere 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 Saint Barthélemy? If you are looking for accommodation near Grand Mere, camping, hotels and holiday cottages in Saint Barthélemy, consider staying in Gustavia which is 4 km (2 miles) away. Other places in and around Saint Barthélemy where you can find information about places to rent, and car hire include Philipsburg which is 33 km (20 miles) away, Marigot, The Valley and Basseterre.

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