Mandiri Surf Break

Lat Long: 5.25° S 103.97° E

Mandiri Surf Forecast and Surf Report

Issued: 6 pm 21 Aug 2026 (local time)

Forecast update in  hr  min

Today's Mandiri sea temperature is
29.1° C
1.2° 

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


Mandiri surf forecast from 21 Aug 2026:

  • Best quality surf: Friday 21 Aug, 10PM (local time) - 8ft (2.5m), 16s period, SSW swell with cross-offshore winds.
  • Most powerful swell: Friday 21 Aug, 10PM (local time) - 8ft (2.5m), 16s period, SSW swell with 3,639 kJ wave energy.
  • Next surfable swell (1★+): Friday 21 Aug, 10PM (local time) - 8ft (2.5m), 16s period with SSW swell.

Best Forecast Surf Conditions for Mandiri this week:

The surf forecast for Mandiri over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 21) at 10PM. The primary swell is predicted to be 2.5m and 16s period with a secondary swell of 1.1m and 5s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Mandiri in the next 16 days are 2.5m 16s and forecast to arrive on Friday (Aug 21) at 10PM. Winds are predicted to be cross-offshore at the time the swell arrives.

Wave TypeTime (WIB) & Date Wave Height & Period
Next good surf (1 star+)10PM (Fri 21st Aug)8ft (2.5m) 16s
Best Surf10PM (Fri 21st Aug)8ft (2.5m) 16s
Most Powerful10PM (Fri 21st Aug)8ft (2.5m) 16s

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


Short Range Forecast

Moderate rain (total 14mm), heaviest on Sat night. Warm (max 30°C on Sat morning, min 24°C on Fri night). Wind will be generally light.

Days 5-7 Weather Summary

Heavy rain (total 20mm), heaviest during Tue night. Warm (max 29°C on Tue morning, min 25°C on Mon night). Wind will be generally light.

Fri
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
5
3
1
4
4
1
5
2
2
4
2
2
4
1
1
4
2
3
4
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.5
SSW
17
2.5
SSW
16
2.3
SSW
15
2.1
SSW
15
1.9
SSW
14
1.9
SSW
14
2.1
SSW
14
2.3
SSW
17
1.9
SSW
16
1.8
SSW
16
1.7
SSW
15
1.6
SSW
15
1.6
SSW
14
1.4
SSW
14
1.3
SSW
13
1.3
SSW
15
1.1
SW
16
1.4
SW
15
2.1
SSW
18
2.2
SSW
16
Wave Graph
Metric surfscale
Energy kJ
3996
3222
2451
1847
1455
1432
1680
3164
1750
1586
1292
1117
1072
700
590
770
565
881
2765
2450
Wind (km/h)
15
S
10
E
15
SSE
20
SSE
15
ESE
15
SSE
15
SSE
15
ESE
20
SE
20
SSE
15
ESE
20
SE
20
SSE
10
ESE
15
SE
15
SE
10
ESE
15
SE
15
SSE
10
ESE
Wind State
cross-on
cross-off
cross
cross-on
cross-off
cross
cross-on
cross-off
cross
cross
cross-off
cross
cross
cross-off
cross
cross
cross-off
cross
cross
cross-off
High Tide
1:01AM0.89m
1:21PM0.45m
2:20AM0.86m
4:10PM0.45m
3:46AM0.88m
5:37PM0.51m
4:51AM0.93m
6:12PM0.60m
5:39AM0.99m
6:40PM0.69m
6:18AM1.04m
7:07PM0.79m
Low Tide
5:11PM0.31m
9:13AM0.40m
5:42PM0.37m
11:13AM0.35m
6:53PM0.43m
11:56AM0.29m
9:27PM0.45m
12:22PM0.24m
10:54PM0.41m
12:44PM0.19m
11:49PM0.36m
1:06PM0.15m
00:32AM0.30m
clear
clear
clear
clear
thunderstorm
clear
part cloud
thunderstorm
thunderstorm
thunderstorm
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
rain showers
thunderstorm
thunderstorm
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:07
6:07
6:07
6:07
6:05
6:05
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:06
6:06
6:05
6:05
6:05
6:05
6:05
 mm
5
8
1
1
1
1
5
1
4
4
3
7
10
Temp °C
29
26
30
29
25
30
29
26
29
28
26
29
28
26
28
27
25
28
27
25
Feels °C
31
29
31
30
27
32
31
28
30
29
28
29
30
29
29
29
28
30
30
28
  • 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 Mandiri Surf forecast

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

Mandiri is 113 km (70 miles) from the city of Kotabumi. If you plan a holiday in Indonesia - Sumatra - Mainland, look for hotels and other accommodation in Kotabumi. Kotabumi has rooms for a wide range of budgets as well as car hire and transport links.

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