Backdoor Surf Break

Lat Long: 23.93° S 35.53° E

Backdoor Surf Forecast and Surf Report

Issued: 7 pm 17 Sep 2026 (local time)

Forecast update in  hr  min

Today's Backdoor sea temperature is
24.5°C
1.2° 

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


Backdoor surf forecast from 18 Sep 2026:

  • Best quality surf: Thursday 24 Sep, 5AM (local time) - 3.5ft (1.1m), 8s period, ESE swell with cross-offshore winds.
  • Most powerful swell: Saturday 19 Sep, 5PM (local time) - 5.5ft (1.7m), 10s period, S swell with 563 kJ wave energy.
  • Next surfable swell (1★+): Thursday 24 Sep, 5AM (local time) - 3.5ft (1.1m), 8s period with ESE swell.

Best Forecast Surf Conditions for Backdoor this week:

The surf forecast for Backdoor over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 24) at 5AM. The primary swell is predicted to be 1.1m and 8s period with a secondary swell of 0.4m and 16s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Backdoor in the next 16 days are 1.7m 10s and forecast to arrive on Saturday (Sep 19) at 5PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 6s period and expected on Friday (Sep 18) at 5AM.

Wave TypeTime (CAT) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Thu 24th Sep)3.5ft (1.1m) 8s
Best Surf 5AM (Thu 24th Sep)3.5ft (1.1m) 8s
Most Powerful 5PM (Sat 19th Sep)5.5ft (1.7m) 10s

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


Short Range Forecast

Mostly dry. Warm (max 23°C on Thu night, min 22°C on Fri night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Warm (max 23°C on Wed morning, min 21°C on Tue night). Wind will be generally light.

Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
Wednesday
23
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
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
ESE
9
0.9
ESE
9
0.9
ESE
8
1.5
SSW
10
1.6
S
10
1.7
S
10
1.4
SSE
9
1.4
SSE
9
1.5
SSE
9
1.8
SE
8
1.6
SE
8
1.5
ESE
8
1.5
ESE
8
1.6
ESE
8
1.6
ESE
8
1.4
ESE
8
1.2
ESE
8
1.1
ESE
8
1.2
ESE
8
Wave Graph
Metric surfscale
Energy kJ
116
108
108
407
520
563
340
295
354
449
346
322
302
347
323
257
165
138
179
Wind (km/h)
10
SE
15
ESE
20
SSE
10
SSE
20
ESE
20
ESE
20
SE
20
ESE
20
SE
15
SE
15
ESE
20
ESE
20
ESE
20
ESE
20
ESE
20
E
15
ENE
20
ENE
20
NNE
Wind State
on
on
on
cross-on
on
on
on
on
on
on
on
on
cross-on
cross-on
on
cross-on
cross-on
cross
cross-off
High Tide
6:53AM2.03m
7:09PM1.87m
7:26AM1.77m
7:51PM1.61m
9:07AM1.53m
00:48AM1.54m
1:21PM1.70m
1:43AM1.80m
1:57PM1.98m
2:11AM2.06m
2:24PM2.25m
2:36AM2.31m
Low Tide
00:46AM0.74m
1:03PM0.86m
1:13AM0.99m
1:38PM1.12m
2:02AM1.25m
5:56PM1.30m
7:03AM1.21m
7:35PM1.06m
7:47AM0.94m
8:06PM0.81m
8:15AM0.69m
8:33PM0.57m
clear
clear
clear
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:31
5:31
5:30
5:28
5:28
5:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:31
5:31
5:31
5:32
5:32
5:32
5:34
 mm
Temp °C
23
23
23
23
22
22
22
23
22
22
22
22
22
22
22
22
23
23
22
Feels °C
23
24
23
24
22
21
21
22
21
22
21
21
21
21
21
21
24
23
21
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Information about the Backdoor Surf forecast

The above surf forecast table for Backdoor provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Backdoor can be found by selecting the local surf guide option on the grey menu. Our Backdoor 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 (Backdoor) 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 Backdoor 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.

Backdoor is 15 km (9 miles) from the city of Inhambane. If you plan a holiday in Inhambane, look for hotels and other accommodation in Inhambane. Inhambane has rooms for a wide range of budgets as well as car hire and transport links.

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