Mahia Reef Surf Break

Lat Long: 39.09° S 177.87° E

Mahia Reef Surf Forecast and Surf Report

Issued: 5 pm 20 Sep 2026 (local time)

Forecast update in  hr  min

Today's Mahia Reef sea temperature is
13.2°C
0.8° 

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 20 Sep 2026:

  • Best quality surf: Monday 21 Sep, 9AM (local time) - 10ft (3.0m), 13s period, S swell with glassy winds.
  • Most powerful swell: Monday 21 Sep, 3AM (local time) - 15ft (4.5m), 12s period, S swell with 5,583 kJ wave energy.
  • Next surfable swell (1★+): Monday 21 Sep, 9AM (local time) - 10ft (3.0m), 13s 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 Monday (Sep 21) at 9AM. The primary swell is predicted to be 3.0m and 13s period. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Mahia Reef in the next 16 days are 4.5m 12s and forecast to arrive on Monday (Sep 21) at 3AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Monday (Sep 21) at 6PM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Mon 21st Sep)10ft (3.0m) 13s
Best Surf 9AM (Mon 21st Sep)10ft (3.0m) 13s
Most Powerful 3AM (Mon 21st Sep)15ft (4.5m) 12s

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


Short Range Forecast

Light rain (total 7mm), mostly falling on Tue afternoon. Very mild (max 16°C on Tue morning, min 7°C on Sun night). Winds decreasing (strong winds from the SSW on Sun afternoon, calm by Tue morning).

Days 5-7 Weather Summary

Light rain (total 3mm), mostly falling on Wed night. Very mild (max 12°C on Fri morning, min 8°C on Wed night). Winds decreasing (fresh winds from the S on Wed afternoon, calm by Fri night).

Sun
20
Monday
21
Tuesday
22
Wednesday
23
Thursday
24
Friday
25
Saturday
26
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
4
2
0
2
0
0
0
0
0
0
0
0
1
2
1
2
1
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
3.5
SSW
9
4
S
11
3
S
13
2.2
S
11
1.5
S
10
1.2
S
12
1.2
S
9
2.2
SSW
8
1.3
S
8
2.1
S
7
2
S
8
1.9
S
8
1.7
S
8
1.5
S
8
1.2
S
10
1.1
S
10
1.4
S
13
1.3
S
12
1.2
S
12
1.2
S
11
Wave Graph
Metric surfscale
Energy kJ
2112
4141
2621
1151
434
389
246
556
224
478
453
500
373
311
282
237
633
480
393
338
Wind (km/h)
45
SSW
40
SW
5
W
20
ENE
10
W
5
WNW
35
SSW
20
WSW
35
SW
30
SSW
30
SSW
30
SW
15
SSW
10
NW
10
WNW
15
SSE
10
WNW
5
NNE
20
NE
15
NNW
Wind State
cross
cross
glassy
cross-off
on
glassy
cross
cross-on
cross
cross
cross
cross-on
cross
cross-on
on
cross-off
on
glassy
cross-off
cross-on
High Tide
00:41AM1.44m
1:14PM1.49m
1:29AM1.38m
2:00PM1.46m
2:18AM1.35m
2:46PM1.45m
3:08AM1.35m
3:33PM1.46m
3:58AM1.39m
4:21PM1.50m
4:47AM1.45m
5:11PM1.55m
Low Tide
6:41PM0.45m
6:53AM0.45m
7:29PM0.44m
7:39AM0.44m
8:15PM0.41m
8:29AM0.42m
9:01PM0.38m
9:20AM0.39m
9:48PM0.34m
10:11AM0.34m
10:36PM0.31m
10:59AM0.30m
11:26PM0.28m
rain showers
clear
clear
clear
clear
clear
light rain
rain showers
light rain
part cloud
rain showers
rain showers
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:00
5:58
5:56
5:54
5:54
5:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:01
6:02
6:04
6:05
6:06
6:07
6:07
 mm
1
2
1
3
2
1
Temp °C
12
11
12
13
12
16
13
10
10
10
10
9
10
9
12
12
10
12
12
14
Feels °C
2
1
8
8
9
14
6
4
2
2
1
2
5
6
9
8
9
8
7
9
  • Map Icons:
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  • 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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