Mahia Spit Surf Break

Lat Long: 39.09° S 177.93° E

Mahia Spit 48 hour detailed Surf Forecast

Issued: 11 am 18 Aug 2026 (local time)

Forecast update in  hr  min

Today's Mahia Spit sea temperature is
12.4° C
1.4° 

Mahia Spit surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Mahia Spit today (18 Aug):

  • Morning surf: Morning surf (18 Aug, local time) - 2ft (0.6m), 9s period with E swell.
  • Afternoon surf: Afternoon surf (18 Aug, local time) - 0.5ft (0.2m), 11s period with E swell.
  • Evening surf: Evening surf (18 Aug, local time) - 0.5ft (0.1m), 16s period with SE swell.

The current surf forecast for Mahia Spit at 7PM is: 0.3m 10s primary swell from a East direction and 0.1m 16s secondary swell from a Southeast direction (forecast issued at 11:00am August 18). An open ocean swell of 4.5m 10s is not directed at the surf break. The wind direction is predicted to be offshore.

Time (NZST) & DateWave HeightWave Period
Morning (18 Aug)2ft (0.6m)9s
Afternoon (18 Aug)0.5ft (0.2m)11s
Evening (18 Aug)0.5ft (0.1m)16s

Table - waves today at Mahia Spit. (Swell directed towards the surf break)


Short Range Forecast

Moderate rain (total 10mm), heaviest on Tue night. Very mild (max 11°C on Wed night, min 8°C on Tue night). Winds decreasing (gales from the SW on Tue afternoon, light winds from the WSW by Thu night).

Tue
18
Wednesday
19
Thursday
20
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
1
2
2
2
2
0
1
1
0
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.6
E
9
0.3
E
10
0.2
E
11
0.3
E
10
0.1
SE
16
5
S
12
0.2
ESE
15
5
SSE
12
0.4
SE
14
1.8
SE
9
1.8
ESE
9
1.9
ESE
9
2
ESE
9
1.8
ESE
9
1.8
SE
9
1.5
ESE
9
1.4
ESE
9
0.9
ESE
9
0.9
ESE
9
0.9
ESE
8
0.9
ESE
8
Wave Graph
Metric surfscale
Energy kJ
60
18
9
18
10
0
21
0
46
516
508
614
660
535
505
338
280
137
131
125
103
Wind (km/h)
50
SW
55
SW
60
SW
60
SW
60
SSW
60
SSW
60
S
55
S
45
S
40
SSW
40
SSW
35
SSW
35
SSW
25
SW
30
WSW
40
SSW
30
SW
25
SW
25
SSW
20
SSW
10
SW
Wind State
off
off
off
off
off
off
cross-off
cross-off
cross-off
cross-off
off
off
off
off
off
off
off
off
cross-off
cross-off
off
High Tide
9:58AM1.49m
10:19PM1.49m
10:47AM1.45m
11:07PM1.43m
11:35AM1.41m
Low Tide
4:12PM0.15m
4:37AM0.14m
5:00PM0.21m
5:24AM0.20m
5:48PM0.27m
cloud
rain showers
part cloud
rain showers
light rain
light rain
light rain
light rain
cloud
cloud
part cloud
cloud
cloud
light rain
cloud
light rain
cloud
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:50
6:50
6:48
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:32
5:32
5:34
 mm
1
1
2
2
1
1
1
1
Temp °C
9
10
9
9
8
8
8
10
10
10
10
9
9
9
9
11
11
11
11
11
11
Feels °C
-2
-2
-4
-5
-6
-6
-6
-3
-1
0
1
0
1
3
3
3
4
5
5
7
8
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 

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