Mahia Reef surfForecast / Gisborne and Mahia / New Zealand

information circle12 Day Weather and Surf, issued 6 pm Sunday 14 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
19.2° C
(Which is 2.1°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 Thursday (Dec 18) at 4PM. The primary swell is predicted to be 1.2m and 8s period with a secondary swell of 0.2m and 18s. 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 1.9m 7s and forecast to arrive on Wednesday (Dec 17) at 10PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 6s period and expected on Monday (Dec 15) at 4PM.

Wave TypeTime (NZDT) & Date Wave Height & Period
Next good surf (1 star+) 4PM (Thu 18th Dec)4ft (1.2m) 8s
Best Surf 4PM (Thu 18th Dec)4ft (1.2m) 8s
Most Powerful10PM (Wed 17th Dec)6ft (1.9m) 7s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Some drizzle, heaviest during Tue night. Warm (max 25°C on Tue afternoon, min 14°C on Sun night). Winds decreasing (fresh winds from the NE on Mon morning, light winds from the SW by Tue night).

Days 3-6 Weather Summary Light rain (total 8mm), mostly falling on Wed afternoon. Warm (max 22°C on Fri afternoon, min 12°C on Wed night). Winds decreasing (fresh winds from the SW on Wed night, light winds from the S by Fri morning).

Sun
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
Swell
Height Map
Wave Height (m) & direction (?)
0.6
S
0.4
SSW
0.4
SSE
0.3
SSE
0.2
SSE
0.4
SE
0.4
SSE
0.4
SE
1
SSW
0.2
SSW
1.6
SSW
1.1
S
1.2
S
1
S
0.8
S
0.6
S
0.3
SSW
0.2
SSE
0.2
S
1.1
S
1
S
Period(s) (?)787881111116167887771291299
Wave
Graph
(?)Metric surfscale
Energy kJ (?)4019171372944307226240146185107673928811203151
Wind
(km/h)
25
ENE
20
N
20
NE
35
NE
15
NNW
20
NNE
30
N
15
N
20
SW
30
SSW
30
SW
15
SW
15
SSE
15
N
10
W
15
ENE
25
NW
20
SW
20
ESE
10
S
20
WSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
crosscross-
off
cross-
off
cross-
on
crosscross-
on
cross-
on
crosscross-
off
crosscross-
on
cross-
off
cross-
on
oncross-
off
oncrossoffcross-
off
cross-
on
High Tide
/ height (m)
2:53AM
1.53
3:10PM
1.52
3:44AM
1.54
4:00PM
1.51
4:32AM
1.57
4:48PM
1.51
5:17AM
1.59
5:33PM
1.52
6:01AM
1.61
6:16PM
1.52
6:45AM
1.62
6:59PM
1.51
7:28AM
1.62
Low Tide
/ height (m)
8:36PM
0.33
9:04AM
0.42
9:23PM
0.40
9:57AM
0.46
10:11PM
0.47
10:46AM
0.50
11:00PM
0.51
11:32AM
0.52
11:48PM
0.52
12:15PM
0.52
12:32AM
0.51
12:58PM
0.51
1:13AM
0.48
Sun
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunrise--5:35--5:35--5:37--5:37--5:37--5:37--5:37
Sunset8:29--8:29--8:30--8:30--8:30--8:31--8:32--
clear
clear
clear
clear
part cloud
part cloud
clear
rain showers
part cloud
rain showers
rain showers
part cloud
part cloud
part cloud
part cloud
part cloud
rain showers
part cloud
part cloud
rain showers
clear
Rain (mm)
-------1-61-----1--4-
Temp. °C161519231923252017141415161520221917171417
Feels °C (?)1110121815192016139910131219201513131311
  • 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 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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