Mahia Reef surfForecast / Gisborne and Mahia / New Zealand

information circle12 Day Weather and Surf, issued 12 am Saturday 27 Dec 2025 NZDT
Forecast update in hr  min  s Forecast update imminent
Mahia Reef surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Mahia Reef sea temperature is
19.0° C
(Which is 1.2°C warmer than normal for this time of year)


Best Forecast Surf Conditions for Mahia Reef this week:

The surf forecast for Mahia Reef over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Dec 30) at 4AM. The primary swell is predicted to be 2.5m and 8s period with a secondary swell of 2.3m and 8s. Another secondary swell of 0.4m and 8s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Mahia Reef in the next 12 days are 3.5m 8s and forecast to arrive on Monday (Dec 29) at 10PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.3m 7s period and expected on Tuesday (Dec 30) at 7AM.

Wave TypeTime (NZDT) & Date Wave Height & Period
Next good surf (1 star+) 4AM (Tue 30th Dec)8ft (2.5m) 8s
Best Surf 4AM (Tue 30th Dec)8ft (2.5m) 8s
Most Powerful10PM (Mon 29th Dec)11ft (3.5m) 8s

Table - best surf conditions forecast for Mahia Reef over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Heavy rain (total 23mm), heaviest during Mon afternoon. Warm (max 21°C on Fri night, min 15°C on Mon morning). Winds increasing (light winds from the SSE on Sat night, fresh winds from the ESE by Mon afternoon).

Days 3-6 Weather Summary Moderate rain (total 19mm), heaviest on Mon night. Warm (max 23°C on Wed afternoon, min 16°C on Mon night). Winds decreasing (fresh winds from the SE on Mon night, calm by Tue night).

Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
01
Fri
02
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
2
2
1
0
1
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.3
SE
0.3
SSW
0.5
S
0.1
S
0.2
E
0.3
SSW
0.1
SW
0.1
S
2.1
E
3
E
1.9
E
1
S
0.8
SSE
1.1
E
0.6
S
0.4
SSE
0.4
SSE
0.4
SSE
0.3
SSE
0.3
SSE
0.2
SSE
Period(s) (?)106613956137879988111010999
Wave
Graph
(?)Metric surfscale
Energy kJ (?)156164641339211143971581011425146393816167
Wind
(km/h)
20
NNE
15
WNW
20
ENE
20
W
10
ESE
25
E
15
ESE
30
E
35
ESE
25
SE
15
E
5
N
10
NW
5
NE
25
NNE
20
NNE
20
NW
15
W
15
NW
5
SW
20
E
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crossoncross-
off
onoffoffoffcross-
off
offcross-
off
offglassoncross-
off
crosscrosscross-
on
ononglassoff
High Tide
/ height (m)
11:26PM
1.50
11:53AM
1.59
12:12AM
1.54
12:42PM
1.62
1:01AM
1.58
1:32PM
1.66
1:57AM
1.65
2:25PM
1.70
2:54AM
1.73
3:21PM
1.73
3:52AM
1.81
4:19PM
1.76
4:48AM
1.89
5:19PM
1.79
Low Tide
/ height (m)
5:36AM
0.31
6:10PM
0.26
6:25AM
0.30
6:58PM
0.26
7:16AM
0.31
7:46PM
0.26
8:12AM
0.31
8:38PM
0.26
9:11AM
0.30
9:33PM
0.26
10:12AM
0.27
10:32PM
0.25
11:11AM
0.23
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
01
Fri
02
Sunrise-5:41--5:41--5:43--5:43--5:43--5:45--5:46-
Sunset--8:36--8:36--8:36--8:37--8:37--8:37--8:37
part cloud
cloud
rain showers
clear
part cloud
part cloud
rain showers
mod rain
heavy rain
heavy rain
mod rain
rain showers
clear
clear
clear
part cloud
part cloud
part cloud
clear
clear
part cloud
Rain (mm)
--2---27121171---------
Temp. °C212019191818171616181919182123202323211919
Feels °C (?)181817171614151111192021191820182021191716
  • 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 12 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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