Mahia Reef Surf Break

Lat Long: 39.09° S 177.87° E

Mahia Reef Surf Forecast and Surf Report

Issued: 11 pm 15 Aug 2026 (local time)

Forecast update in  hr  min

Today's Mahia Reef sea temperature is
12.0° C
1.8° 

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 15 Aug 2026:

  • Best quality surf: Friday 21 Aug, 6PM (local time) - 6.5ft (2.0m), 16s period, S swell with cross-offshore winds.
  • Most powerful swell: Wednesday 19 Aug, 12AM (local time) - 20ft (6.0m), 12s period, S swell with 9,761 kJ wave energy.
  • Next surfable swell (1★+): Thursday 20 Aug, 6PM (local time) - 6.5ft (2.0m), 9s period with S 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 Thursday (Aug 20) at 6PM. The primary swell is predicted to be 2.0m and 9s period with a secondary swell of 0.9m and 8s. 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 6.0m 12s and forecast to arrive on Wednesday (Aug 19) at 12AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 8s period and expected on Sunday (Aug 16) at 6AM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 6PM (Thu 20th Aug)6.5ft (2.0m) 9s
Best Surf 6PM (Fri 21st Aug)6.5ft (2.0m) 16s
Most Powerful12AM (Wed 19th Aug)20ft (6.0m) 12s

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


Short Range Forecast

Heavy rain (total 37mm), heaviest during Sun afternoon. Very mild (max 13°C on Sat night, min 8°C on Mon night). Winds increasing (light winds from the S on Sat night, near gales from the SW by Tue afternoon).

Days 5-7 Weather Summary

Moderate rain (total 11mm), heaviest on Tue night. Very mild (max 13°C on Fri afternoon, min 9°C on Tue night). Winds decreasing (near gales from the SW on Tue night, calm by Fri morning).

Sunday
16
Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
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
1
1
0
0
0
0
0
2
1
2
1
1
1
3
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2
E
9
1.6
ESE
8
3.5
SSW
9
4
S
10
4
S
10
3.5
SSE
10
3
S
9
3
S
9
4
S
10
6
S
12
5
S
12
4.5
S
12
3.5
S
14
2.5
S
13
2.1
S
9
1.8
S
9
1.6
S
11
1.8
S
17
2
S
16
Wave Graph
Metric surfscale
Energy kJ
617
341
2097
3407
3105
2177
1487
1318
3144
9761
7845
5558
4981
2253
780
577
599
1858
1913
Wind (km/h)
20
SSW
40
SW
45
SSW
45
S
40
S
35
S
35
SW
40
SW
50
SW
55
SW
45
SSW
35
SSW
30
SSW
25
SW
20
SSW
10
WNW
5
NNW
10
ESE
10
NNW
Wind State
cross
cross-on
cross
cross-off
cross-off
cross-off
cross
cross-on
cross
cross
cross
cross
cross
cross
cross
on
cross-on
off
cross-on
High Tide
8:11AM1.75m
8:31PM1.81m
9:00AM1.76m
9:21PM1.76m
9:46AM1.75m
10:10PM1.71m
10:33AM1.72m
10:59PM1.67m
11:22AM1.67m
11:48PM1.62m
12:14PM1.62m
00:35AM1.57m
Low Tide
2:02AM0.11m
2:17PM0.13m
2:51AM0.16m
3:09PM0.20m
3:39AM0.22m
4:01PM0.28m
4:27AM0.30m
4:51PM0.34m
5:15AM0.36m
5:41PM0.40m
6:03AM0.41m
6:30PM0.44m
mod rain
light rain
heavy rain
mod rain
light rain
light rain
cloud
cloud
light rain
light rain
light rain
light rain
rain showers
part cloud
clear
part cloud
clear
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:54
6:52
6:52
6:50
6:48
6:48
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:30
5:31
5:32
5:34
5:35
5:36
 mm
7
2
12
10
2
2
2
5
1
3
2
Temp °C
13
11
10
10
9
9
9
9
10
9
10
10
11
12
11
10
12
13
11
Feels °C
10
3
1
1
-1
0
1
-2
-1
-3
0
3
4
7
6
8
11
10
7
  • 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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