Mahia Reef Surf Break

Lat Long: 39.09° S 177.87° E

Mahia Reef Surf Forecast and Surf Report

Issued: 11 pm 17 Sep 2026 (local time)

Forecast update in  hr  min

Today's Mahia Reef sea temperature is
13.1°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 17 Sep 2026:

  • Best quality surf: Monday 21 Sep, 12PM (local time) - 10ft (3.0m), 12s period, S swell with glassy winds.
  • Most powerful swell: Monday 21 Sep, 6AM (local time) - 15ft (4.5m), 12s period, SSW swell with 5,886 kJ wave energy.
  • Next surfable swell (1★+): Friday 18 Sep, 12PM (local time) - 3.5ft (1.1m), 12s period with SE 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 Friday (Sep 18) at 12PM. The primary swell is predicted to be 1.1m and 12s period with a secondary swell of 0.3m and 17s. 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 4.5m 12s and forecast to arrive on Monday (Sep 21) at 6AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 6s period and expected on Friday (Sep 18) at 6PM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+)12PM (Fri 18th Sep)3.5ft (1.1m) 12s
Best Surf12PM (Mon 21st Sep)10ft (3.0m) 12s
Most Powerful 6AM (Mon 21st Sep)15ft (4.5m) 12s

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


Short Range Forecast

Some drizzle, heaviest during Sun morning. Very mild (max 15°C on Sat night, min 10°C on Sun morning). Winds increasing (calm on Fri afternoon, near gales from the SW by Sun morning).

Days 5-7 Weather Summary

Moderate rain (total 10mm), heaviest on Tue afternoon. Very mild (max 18°C on Tue afternoon, min 8°C on Sun night). Winds increasing (calm on Mon morning, strong winds from the SSW by Wed afternoon).

Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
Wednesday
23
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
0
0
0
0
3
2
1
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.6
SE
14
1.1
SE
12
1
SE
12
0.9
SE
12
0.8
S
19
1.2
S
16
0.9
SSW
14
2.3
SW
6
3
SSW
9
4
S
11
3.5
S
12
2.5
S
12
1.9
S
10
1.3
S
10
0.8
S
9
2.1
S
7
1.6
S
8
0.7
S
18
2.5
S
8
Wave Graph
Metric surfscale
Energy kJ
125
324
254
224
450
743
336
316
1265
3952
3512
1880
780
320
110
461
321
318
815
Wind (km/h)
15
N
10
NNE
5
N
15
WSW
20
WSW
10
SSE
30
WNW
55
SW
30
SW
30
SW
10
W
15
ENE
10
WNW
5
NNW
10
NNE
35
SW
15
WSW
40
SSW
40
SW
Wind State
cross
cross
cross-on
cross-on
cross-on
cross-off
on
cross-on
cross
cross-on
cross-on
cross-off
on
cross-on
cross
cross-on
cross-on
cross
cross
High Tide
10:25PM1.64m
10:45AM1.66m
11:11PM1.59m
11:34AM1.60m
11:55PM1.52m
12:25PM1.54m
00:41AM1.44m
1:14PM1.49m
1:29AM1.38m
2:00PM1.46m
2:18AM1.35m
2:46PM1.45m
Low Tide
4:38AM0.42m
5:05PM0.42m
5:24AM0.45m
5:53PM0.44m
6:09AM0.46m
6:41PM0.45m
6:53AM0.45m
7:29PM0.44m
7:39AM0.44m
8:15PM0.41m
8:29AM0.42m
9:01PM0.38m
part cloud
cloud
clear
part cloud
part cloud
clear
part cloud
rain showers
part cloud
clear
clear
clear
clear
clear
rain showers
rain showers
part cloud
light rain
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:05
6:03
6:01
6:00
5:58
5:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:00
6:00
6:01
6:02
6:04
6:05
 mm
1
4
2
4
3
Temp °C
14
14
14
13
14
14
15
11
13
10
11
12
11
16
18
11
10
9
10
Feels °C
11
12
13
12
11
12
11
2
5
1
9
7
7
14
16
3
6
0
0
  • 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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