Sponge bay Surf Break

Lat Long: 38.70° S 178.06° E

Issued: 5 pm 05 Jul 2026 (local time)

Forecast update in  hr  min

Today's Sponge bay sea temperature is
13.5° C

1.2°C colder than average for this time of year

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


Sponge bay surf forecast from 5 Jul 2026:

  • Best quality surf: Monday 13 Jul, 12AM (local time) - 10ft (3.0m), 11s period, SE swell with cross-onshore winds.
  • Most powerful swell: Saturday 11 Jul, 12PM (local time) - 13ft (4.0m), 10s period, SSE swell with 3,696 kJ wave energy.
  • Next surfable swell (1★+): Sunday 5 Jul, 9PM (local time) - 3.5ft (1.0m), 10s period with E swell.

Best Forecast Surf Conditions for Sponge bay this week:

The surf forecast for Sponge bay over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Jul 05) at 9PM. The primary swell is predicted to be 1.0m and 10s period with a secondary swell of 0.1m and 17s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Sponge bay in the next 16 days are 4.0m 10s and forecast to arrive on Saturday (Jul 11) at 12PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.2m 8s period and expected on Monday (Jul 06) at 12PM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Sun 5th Jul)3.5ft (1.0m) 10s
Best Surf12AM (Mon 13th Jul)10ft (3.0m) 11s
Most Powerful12PM (Sat 11th Jul)13ft (4.0m) 10s

Table - best surf conditions forecast for Sponge bay over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Alright, Rusty here. Let’s have a look at what’s coming down the line for Sponge Bay.

Right off the bat, I gotta be straight with you – the next week and a half looks rough. We’ve got a solid gap of poor conditions starting now and stretching all the way through to the 15th of July. There’s a run of days where the wind is just howling onshore, mostly from the south and southwest, and when you combine that with building swell, it’s going to be a washing machine out there. The energy in the water climbs through the roof, especially by the 10th and 11th, with combined swell energy hitting over 1400 (moderate) and then skyrocketing to 5968 (strong) on the 11th, but it’s all blown out. For a beach-and-reef setup like Sponge Bay, this pattern looks more interesting for kite surfing than paddle surfing. The water temp is sitting at 56°, which is a bit colder than normal for this time of year.

Now, the first real glimmer of hope comes on Wednesday the 15th of July. The morning shows a 15ft swell from the SSE, but the wind is light and offshore from the NW. That’s a juicy combination – clean face, big juice. But here’s the catch: at 15ft, this is strictly for experts only. The energy is massive at 7437 (very strong), and the period is 11 seconds. It’s a powerful groundswell that will be offering up some serious freight trains. The afternoon cleans up further with a 10ft swell from the SE and light offshore winds from the NNE. Still too big for anyone but the very experienced. Because crowds are listed as “sometimes,” don’t be surprised if you see a few other brave souls out there.

After that, things settle down a bit. Thursday the 16th sees a drop to 7ft from the ESE, but the wind goes cross-shore and the forecast is marginal. Friday the 17th afternoon is where it gets interesting for the rest of us. The swell drops to 4ft from the ESE, with a 11-second period, and you’ve got a clean cross-off breeze from the ENE. The combined energy is 581 (moderate). This is a solid, surfable day with decent shape. Good for a wide range of surfers.

The final weekend, Saturday the 18th, offers clean, offshore winds again, but the swell is backing right off – 3ft from the SSE in the morning and 3ft in the afternoon. The energy drops to 529 and 340 (weak to moderate). It’s a nice end to the run, small and clean, best for logs or a fun cruiser.

So, the standout is absolutely Wednesday the 15th for the big-wave crew, and Friday the 17th afternoon is the pick for the average surfer looking for clean, fun waves.

Rusty.

Short Range Forecast

Moderate rain (total 16mm), heaviest on Mon afternoon. Very mild (max 14°C on Sun afternoon, min 8°C on Sun night). Wind will be generally light.

Days 5-7 Weather Summary

Heavy rain (total 30mm), heaviest during Fri afternoon. Very mild (max 13°C on Thu morning, min 10°C on Sat morning). Winds increasing (light winds from the W on Thu night, strong winds from the S by Fri night).

Sun
5
Monday
6
Tuesday
7
Wednesday
8
Thursday
9
Friday
10
Saturday
11
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
Rating
(10 max)
0
1
1
0
2
2
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
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)
0.1
S
16
1
E
10
1
E
8
0.1
S
21
1.3
E
9
1.2
E
9
1.4
E
10
1.7
E
10
1.8
ESE
11
1.8
ESE
10
1.6
ESE
10
1.2
E
10
1.3
ESE
10
3
S
10
3.5
SE
10
3
SE
11
3
SE
11
3
SE
11
4
SSE
10
3
SSE
10
3
SSE
10
Wave Graph
Metric surfscale
Energy kJ
5
196
142
8
288
251
371
596
692
628
480
290
356
1555
2415
2285
2320
2232
3042
2039
1802
Wind (km/h)
20
N
10
NW
10
N
5
E
10
NW
5
WNW
10
S
10
W
20
SSW
25
SSW
15
SW
20
SW
25
SW
25
S
40
S
45
SSW
50
S
40
SSW
40
SSW
30
SSW
25
SSW
Wind State
off
cross-off
off
cross
cross-off
cross-off
on
cross
cross-on
on
cross-on
cross-on
cross-on
on
on
cross-on
on
on
on
on
on
High Tide
10:18PM1.91m
10:29AM1.82m
10:59PM1.93m
11:12AM1.84m
11:39PM1.94m
11:56AM1.85m
00:18AM1.93m
12:42PM1.87m
00:59AM1.91m
1:30PM1.89m
1:45AM1.89m
2:19PM1.90m
2:38AM1.86m
Low Tide
3:55PM0.62m
4:35AM0.64m
4:37PM0.59m
5:17AM0.59m
5:18PM0.57m
5:59AM0.54m
6:00PM0.55m
6:40AM0.49m
6:45PM0.54m
7:24AM0.45m
7:35PM0.54m
8:10AM0.42m
8:29PM0.54m
9:01AM0.42m
clear
clear
rain showers
mod rain
rain showers
part cloud
clear
cloud
light rain
light rain
rain showers
cloud
rain showers
rain showers
light rain
mod rain
mod rain
light rain
rain showers
light rain
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:24
7:24
7:24
7:24
7:24
7:24
7:24
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
4:58
4:59
4:59
5:00
5:00
5:00
5:01
5:01
 mm
1
7
4
4
2
1
1
5
3
9
7
2
2
1
2
Temp °C
14
11
13
12
11
11
12
11
11
12
12
13
13
13
13
12
12
10
11
10
11
Feels °C
10
8
9
8
8
10
10
9
6
7
8
9
8
9
5
3
2
1
3
2
5
Swell 1
Height (m)
Direction
Period (s)
1.1
E
10
1
E
10
1
E
8
1.4
E
9
1.3
E
9
1.2
E
9
1.4
E
10
1.7
E
10
1.8
ESE
11
1.8
ESE
10
1.6
ESE
10
1.2
SSE
6
1.3
ESE
10
1.9
SSE
10
0.3
S
18
0.7
E
10
0.9
E
10
3
SE
11
3
SE
10
2.4
SE
10
2.3
SE
10
Energy kJ
250
196
142
347
288
251
371
596
692
628
480
115
356
734
59
96
161
2232
1632
1160
1111
Swell 2
Height (m)
Direction
Period (s)
0.1
S
16
0.1
S
16
0.1
S
15
0.1
S
21
0.3
SSE
19
0.3
SSE
17
0.3
SSE
10
0.3
SSE
10
0.3
SSE
14
0.3
SSE
14
0.3
SSE
13
1.2
E
10
0.3
SSE
16
1.6
ESE
10
0.2
SSE
20
0.3
SSE
18
0.4
SSE
16
Energy kJ
5
5
4
8
68
58
20
18
41
37
32
290
50
461
39
63
86
Swell 3
Height (m)
Direction
Period (s)
0.1
S
10
0.1
NE
9
0.1
S
22
0.1
S
13
0.3
SSW
19
0.3
S
11
0.3
SSE
16
0.3
SSE
16
0.4
SSW
14
0.4
SSW
14
0.1
S
19
0.2
S
17
0.4
SSW
16
0.2
S
20
0.2
S
14
Energy kJ
2
3
9
4
69
21
51
48
69
62
7
23
100
30
16
Wind waves
Height (m)
Direction
Period (s)
1.5
NE
7
2
NE
9
0.8
SSW
9
0.5
S
7
1.7
S
6
1.3
SSE
9
3
S
10
3.5
SE
10
3
SE
11
3
SE
11
0.1
S
21
4
SSE
10
3
SSE
10
3
SSE
10
Energy kJ
198
571
92
28
225
266
1555
2415
2285
2320
9
3042
2039
1802
Nearest Offshore or Glassy
Rating
(10 max)
2
1
1
2
2
2
3
3
3
3
3
3
3
4
1
3
1
2
2
4
5
Distance (km)
1
0
0
1
0
0
36
3
10
43
10
42
53
36
121
125
121
121
121
68
53
Best forecast wave conditions in Gisborne and Mahia
Rating
(10 max)
2
2
1
2
4
3
3
4
4
3
3
Best forecast wave conditions in New Zealand
Rating
(10 max)
2
5
5
5
5
5
4
4
4
4
4
4
5
4
4
5
4
4
4
4
5
Header Global
Rating
(10 max)
9
7
5
6
8
7
5
5
9
8
9
9
5
6
6
5
8
7
4
9
9
  • 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 Sponge bay Surf forecast

The above surf forecast table for Sponge bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Sponge bay can be found by selecting the local surf guide option on the grey menu. Our Sponge bay 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 (Sponge bay) 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 Sponge bay 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.

Are you planning a holiday in Gisborne and Mahia? If you are looking for accommodation near Sponge bay, camping, hotels and holiday cottages in Gisborne and Mahia, consider staying in Gisborne which is 8 km (5 miles) away.

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