Mahia Reef Surf Break

Lat Long: 39.09° S 177.87° E

Mahia Reef Surf Forecast and Surf Report

Issued: 11 pm 09 Aug 2026 (local time)

Forecast update in  hr  min

Today's Mahia Reef sea temperature is
12.1° 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 9 Aug 2026:

  • Best quality surf: Saturday 15 Aug, 3PM (local time) - 10ft (3.0m), 8s period, SE swell with glassy winds.
  • Most powerful swell: Monday 17 Aug, 6AM (local time) - 18ft (5.5m), 11s period, S swell with 7,522 kJ wave energy.
  • Next surfable swell (1★+): Monday 10 Aug, 3PM (local time) - 2.5ft (0.8m), 10s period with SSE 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 Monday (Aug 10) at 3PM. The primary swell is predicted to be 0.8m and 10s period. 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 5.5m 11s and forecast to arrive on Monday (Aug 17) at 6AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Sunday (Aug 16) at 12AM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 3PM (Mon 10th Aug)2.5ft (0.8m) 10s
Best Surf 3PM (Sat 15th Aug)10ft (3.0m) 8s
Most Powerful 6AM (Mon 17th Aug)18ft (5.5m) 11s

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


Short Range Forecast

Some drizzle, heaviest during Sun night. Very mild (max 14°C on Sun night, min 10°C on Mon night). Wind will be generally light.

Days 5-7 Weather Summary

Heavy rain (total 26mm), heaviest during Fri afternoon. Very mild (max 14°C on Thu afternoon, min 9°C on Wed night). Winds decreasing (strong winds from the E on Fri afternoon, calm by Sat afternoon).

Monday
10
Tuesday
11
Wednesday
12
Thursday
13
Friday
14
Saturday
15
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
1
0
0
0
1
0
1
0
0
0
0
0
0
0
1
3
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.1
S
12
0.9
SSE
10
0.8
SSE
10
0.7
SSE
12
1.6
S
9
1.5
S
8
1.3
S
9
1.3
SSE
8
1.4
SE
10
1.4
SE
10
1.1
SE
9
0.8
SE
8
0.9
SE
8
0.8
SE
8
1.6
ESE
7
1.9
E
7
2
ESE
8
3
SE
8
2.1
ESE
9
Wave Graph
Metric surfscale
Energy kJ
341
173
131
131
395
317
275
209
450
392
172
95
109
84
240
378
462
1195
677
Wind (km/h)
20
NNW
15
WNW
10
SSE
15
WSW
25
SW
15
SW
0
E
15
NNE
25
NE
20
NNE
20
NNE
30
NE
25
NNE
30
NE
35
E
30
NE
20
NE
0
SE
10
WNW
Wind State
cross-on
on
cross-off
cross-on
cross-on
cross
glassy
cross
cross-off
cross
cross
cross-off
cross
cross-off
cross-off
cross-off
cross-off
glassy
on
High Tide
2:29AM1.68m
2:59PM1.81m
3:29AM1.69m
3:57PM1.84m
4:28AM1.70m
4:56PM1.86m
5:26AM1.71m
5:54PM1.87m
6:24AM1.72m
6:49PM1.87m
7:19AM1.73m
7:41PM1.84m
Low Tide
8:41AM0.22m
9:21PM0.19m
9:43AM0.16m
10:20PM0.15m
10:43AM0.10m
11:18PM0.11m
11:39AM0.06m
00:16AM0.09m
12:32PM0.05m
1:11AM0.09m
1:24PM0.08m
2:02AM0.11m
rain showers
clear
part cloud
clear
part cloud
cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
cloud
light rain
heavy rain
heavy rain
cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:01
7:00
6:58
6:58
6:56
6:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:25
5:27
5:27
5:28
5:29
5:30
 mm
1
2
12
12
Temp °C
14
14
14
13
11
11
11
11
12
11
13
14
13
13
13
14
14
14
12
Feels °C
11
12
11
11
6
7
9
7
7
6
8
8
8
8
7
8
11
14
9
  • 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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