Mahia Reef surfForecast / Gisborne and Mahia / New Zealand

information circle16 Day Weather and Surf, issued 11 am Tuesday 14 Apr 2026 NZST
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
18.3° C
(Which is normal for this time of year)

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 Tuesday (Apr 21) at 3AM. The primary swell is predicted to be 1.3m and 9s period with a secondary swell of 0.8m and 7s. 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 2.1m 13s and forecast to arrive on Friday (Apr 17) at 9AM. Winds are predicted to be 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 Saturday (Apr 18) at 9PM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Tue 21st Apr)4.5ft (1.3m) 9s
Best Surf 3AM (Tue 21st Apr)4.5ft (1.3m) 9s
Most Powerful 9AM (Fri 17th Apr)7ft (2.1m) 13s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast Some drizzle, heaviest during Tue afternoon. Warm (max 21°C on Tue afternoon, min 13°C on Thu night). Winds increasing (light winds from the SW on Wed afternoon, strong winds from the SW by Thu afternoon).

Days 3-6 Weather Summary Light rain (total 2mm), mostly falling on Sat night. Warm (max 20°C on Sun afternoon, min 14°C on Sun night). Winds increasing (light winds from the NNE on Fri morning, fresh winds from the NNE by Sat night).

Tuesday
14
Wednesday
15
Thursday
16
Friday
17
Saturday
18
Sunday
19
Monday
20
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
1.2
E
1.1
E
1
E
0.8
ESE
0.7
ESE
0.5
ESE
0.4
ESE
1.1
SW
1.4
SSW
2.1
S
1.6
S
1
S
0.7
S
0.4
SE
0.3
S
0.2
ESE
0.2
S
0.2
S
0.2
S
0.2
S
0.9
E
Period(s) (?)1313121212111157131110912101199986
Wave
Graph
(?)Metric surfscale
Energy kJ (?)521421314189145694761196146865218376351711766656
Wind
(km/h)
20
NW
15
NW
20
WNW
25
W
10
SW
35
WNW
25
W
40
SW
20
W
10
NW
15
NE
20
NNW
30
N
25
N
20
N
15
NNW
10
W
15
SW
35
S
35
S
25
SSE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
oncross-
on
ononcross-
on
ononcross-
on
ononcross-
off
cross-
on
cross-
on
crosscross-
on
cross-
on
oncrosscross-
off
cross-
off
cross-
off
High Tide
/ height (m)
2:49PM
1.42
3:14AM
1.53
3:41PM
1.50
4:06AM
1.60
4:33PM
1.59
4:59AM
1.68
5:26PM
1.69
5:52AM
1.75
6:19PM
1.79
6:46AM
1.79
7:13PM
1.88
7:41AM
1.81
8:06PM
1.93
Low Tide
/ height (m)
9:01PM
0.33
9:28AM
0.28
9:55PM
0.28
10:21AM
0.25
10:47PM
0.24
11:14AM
0.22
11:39PM
0.20
12:07PM
0.19
12:32AM
0.17
1:00PM
0.16
1:29AM
0.15
1:52PM
0.14
2:26AM
0.13
Tuesday
14
Wednesday
15
Thursday
16
Friday
17
Saturday
18
Sunday
19
Monday
20
Sunrise6:35--6:35--6:35--6:37--6:37--6:39--6:39--
Sunset-5:42--5:39--5:38--5:37--5:36--5:35--5:32-
clear
light rain
part cloud
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
part cloud
cloud
cloud
light rain
part cloud
part cloud
rain showers
light rain
light rain
heavy rain
Rain (mm)
-1------------1--12545
Temp. °C202116171817171714181917191917192015141415
Feels °C (?)17181212161212991615131414121617128711
  • 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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