Backdoor Surf Break

Lat Long: 23.93° S 35.53° E

Backdoor Surf Forecast and Surf Report

Issued: 7 pm 17 Aug 2026 (local time)

Forecast update in  hr  min

Today's Backdoor sea temperature is
22.9° C
0.2° 

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


Backdoor surf forecast from 17 Aug 2026:

  • Best quality surf: Saturday 22 Aug, 2AM (local time) - 5ft (1.5m), 14s period, SSW swell with cross-offshore winds.
  • Most powerful swell: Monday 24 Aug, 11AM (local time) - 10ft (3.0m), 16s period, S swell with 4,314 kJ wave energy.
  • Next surfable swell (1★+): Thursday 20 Aug, 2AM (local time) - 3ft (0.9m), 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 (Aug 20) at 2AM. The primary swell is predicted to be 0.9m and 8s period with a secondary swell of 0.2m 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 3.0m 16s and forecast to arrive on Monday (Aug 24) at 11AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Saturday (Aug 22) at 11PM.

Wave TypeTime (CAT) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Thu 20th Aug)3ft (0.9m) 8s
Best Surf 2AM (Sat 22nd Aug)5ft (1.5m) 14s
Most Powerful11AM (Mon 24th Aug)10ft (3.0m) 16s

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


Short Range Forecast

Mostly dry. Warm (max 24°C on Thu afternoon, min 20°C on Mon night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Warm (max 23°C on Fri morning, min 19°C on Thu night). Winds increasing (light winds from the NNW on Fri night, fresh winds from the S by Sun afternoon).

Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
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
0
0
0
1
1
0
1
0
0
3
2
0
1
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)
1.4
SE
9
1.2
SE
8
1.1
SE
8
1.1
SE
8
1.1
SE
8
0.9
ESE
8
0.9
ESE
8
0.4
SSW
15
0.5
SSW
14
0.5
SSW
14
1.3
SSW
9
0.8
SSW
16
1.5
SSW
14
1.2
SSW
13
1
S
12
0.7
S
11
1.2
S
14
2.3
SSE
7
2.1
S
12
Wave Graph
Metric surfscale
Energy kJ
307
206
180
171
136
101
83
85
105
120
254
346
792
499
290
121
590
547
1290
Wind (km/h)
10
S
15
SE
20
SSE
20
SSE
10
ESE
10
E
15
NNE
15
NNE
10
SE
15
WSW
15
S
20
SSE
10
N
15
NNE
25
NNE
15
NW
25
S
35
SSE
25
SSE
Wind State
cross-on
on
on
on
on
cross-on
cross-off
cross-off
on
cross-off
cross-on
on
cross-off
cross-off
cross-off
off
cross-on
on
on
High Tide
6:40AM2.46m
6:58PM2.36m
7:09AM2.24m
7:28PM2.11m
7:40AM2.00m
8:03PM1.85m
8:23AM1.75m
9:09PM1.61m
10:38AM1.56m
00:58AM1.59m
1:37PM1.71m
2:07AM1.82m
Low Tide
00:37AM0.37m
12:51PM0.40m
1:05AM0.57m
1:20PM0.63m
1:34AM0.80m
1:53PM0.88m
2:10AM1.04m
2:46PM1.13m
3:43AM1.25m
6:13PM1.23m
7:19AM1.17m
7:54PM1.02m
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
part cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:01
6:01
6:00
5:58
5:58
5:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:21
5:21
5:22
5:22
5:22
5:22
5:22
 mm
Temp °C
21
21
21
21
22
22
21
22
24
21
23
23
21
22
23
22
23
22
21
Feels °C
20
22
21
21
23
22
22
22
23
21
23
21
21
21
22
21
22
19
18
  • 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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