Mahia Reef Surf Break

Lat Long: 39.09° S 177.87° E

Mahia Reef Surf Forecast and Surf Report

Issued: 11 am 13 Aug 2026 (local time)

Forecast update in  hr  min

Today's Mahia Reef sea temperature is
12.2° C
1.6° 

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


Mahia Reef surf forecast from 13 Aug 2026:

  • Best quality surf: Saturday 15 Aug, 6AM (local time) - 7ft (2.2m), 9s period, E swell with cross-offshore winds.
  • Most powerful swell: Wednesday 19 Aug, 9PM (local time) - 13ft (4.0m), 15s period, S swell with 7,445 kJ wave energy.
  • Next surfable swell (1★+): Saturday 15 Aug, 6AM (local time) - 7ft (2.2m), 9s period with E swell.

Best Forecast Surf Conditions for Mahia Reef this week:

The surf forecast for Mahia Reef over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Aug 15) at 6AM. The primary swell is predicted to be 2.2m and 9s period with a secondary swell of 0.1m and 16s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Mahia Reef in the next 16 days are 4.0m 15s and forecast to arrive on Wednesday (Aug 19) at 9PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 9s period and expected on Saturday (Aug 15) at 3AM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Sat 15th Aug)7ft (2.2m) 9s
Best Surf 6AM (Sat 15th Aug)7ft (2.2m) 9s
Most Powerful 9PM (Wed 19th Aug)13ft (4.0m) 15s

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


Short Range Forecast

Heavy rain (total 60mm), heaviest during Thu morning. Very mild (max 13°C on Thu afternoon, min 11°C on Thu morning). Winds increasing (light winds from the E on Sat morning, strong winds from the SSW by Sat night).

Days 4-6 Weather Summary

Heavy rain (total 33mm), heaviest during Sun afternoon. Very mild (max 11°C on Tue afternoon, min 8°C on Sun afternoon). Mainly near gales.

Thursday
13
Friday
14
Saturday
15
Sunday
16
Monday
17
Tuesday
18
Wednesday
19
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
2
2
2
1
0
0
1
1
0
0
0
0
0
0
0
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1
SE
9
0.8
SE
8
0.7
SE
8
0.4
SE
8
0.2
S
16
2.5
E
9
2.1
E
9
2.1
E
8
1.9
E
8
2.5
SSW
6
4
SSW
10
3.5
S
10
3
S
9
3.5
S
8
3.5
S
9
3.5
S
9
2.5
SSW
10
3
S
9
4.5
S
12
4
S
12
3.5
S
15
Wave Graph
Metric surfscale
Energy kJ
155
82
69
20
20
977
654
612
524
601
3251
2393
1628
1952
1813
2323
1219
1752
5816
4836
5726
Wind (km/h)
15
NNE
25
NE
30
NE
25
NE
30
ENE
20
NE
10
E
25
SE
20
S
55
SSW
50
SSW
45
S
45
S
40
SSW
45
SW
45
SW
40
SSW
45
SW
40
SSW
35
SSW
25
SW
Wind State
cross
cross-off
cross-off
cross-off
cross-off
cross-off
off
off
cross-off
cross
cross
cross-off
cross-off
cross
cross
cross
cross
cross
cross
cross
cross
High Tide
5:54PM1.87m
6:24AM1.72m
6:49PM1.87m
7:19AM1.73m
7:41PM1.84m
8:11AM1.75m
8:31PM1.81m
9:00AM1.76m
9:21PM1.76m
9:46AM1.75m
10:10PM1.71m
10:33AM1.72m
10:59PM1.67m
Low Tide
11:39AM0.06m
00:16AM0.09m
12:32PM0.05m
1:11AM0.09m
1:24PM0.08m
2:02AM0.11m
2:17PM0.13m
2:51AM0.16m
3:09PM0.20m
3:39AM0.22m
4:01PM0.28m
4:27AM0.30m
4:51PM0.34m
mod rain
heavy rain
light rain
light rain
light rain
mod rain
mod rain
light rain
mod rain
mod rain
mod rain
rain showers
light rain
rain showers
light rain
rain showers
clear
rain showers
light rain
light rain
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:58
6:56
6:56
6:54
6:52
6:52
6:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:28
5:29
5:30
5:30
5:31
5:32
5:34
 mm
9
11
3
5
5
8
7
4
8
7
9
5
3
2
4
2
1
2
1
Temp °C
11
13
13
13
13
13
13
13
13
10
9
9
9
9
9
10
11
11
11
11
11
Feels °C
8
8
8
9
8
7
12
9
10
-1
-2
-2
-2
0
0
1
2
1
3
3
5
  • 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 Mahia Reef Surf forecast

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

Mahia Reef is 49 km (30 miles) from the city of Gisborne. If you plan a holiday in Gisborne and Mahia, look for hotels and other accommodation in Gisborne. Gisborne has rooms for a wide range of budgets as well as car hire and transport links.

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