Sponge bay Surf Break

Lat Long: 38.70° S 178.06° E

Sponge bay Surf Forecast and Surf Report

Issued: 11 am 09 Sep 2026 (local time)

Forecast update in  hr  min

Today's Sponge bay sea temperature is
13.1°C
0.8° 

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 9 Sep 2026:

  • Best quality surf: Sunday 13 Sep, 3AM (local time) - 6ft (1.8m), 16s period, SSE swell with cross-offshore winds.
  • Most powerful swell: Sunday 13 Sep, 3AM (local time) - 6ft (1.8m), 16s period, SSE swell with 1,592 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 9 Sep, 6PM (local time) - 3.5ft (1.1m), 8s period with SE 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 Wednesday (Sep 09) at 6PM. The primary swell is predicted to be 1.1m and 8s period. 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 1.8m 16s and forecast to arrive on Sunday (Sep 13) at 3AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Monday (Sep 14) at 9PM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 6PM (Wed 9th Sep)3.5ft (1.1m) 8s
Best Surf 3AM (Sun 13th Sep)6ft (1.8m) 16s
Most Powerful 3AM (Sun 13th Sep)6ft (1.8m) 16s

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


The Lowdown

Alright, surf’s up... or at least, it’s gonna be. Let’s get real about the next couple of weeks at Sponge Bay.

Honestly, for the next few days, it’s pretty gutless. We’ve got a stretch from now through Saturday morning that’s looking weak and messy. The swell’s tiny, mostly under 3 feet, and the wind’s all over the shop. Thursday and Friday are just going to be a battle with onshores and chop, nothing worth getting wet for. You’d be better off sorting your gear or watching the cams. This is a real flat spell, a solid few days of nothing on offer.

Then, hold onto your boardies. Sunday morning (the 13th) is the standout. That’s the one to circle. We’ve got chest-high plus surf at 6 feet from the SSE, and the energy is pumping with a strong 1474 combined swell energy. The wind is light and cross-offshore, WNW at 6 mph, which is going to leave it glassy and clean. This is proper Sponge Bay (Bay) firing. The period is a long 15 seconds, so it’s got some serious push. That’s a morning for the experienced crew, as it’s over 5 feet, and it’ll be a bit much for the beginners. Get on it early, because the wind swings onshore in the afternoon and wrecks it.

After that, the surf settles back down. Monday (the 14th) has some clean, fun options with about 4 feet of swell and offshore or cross-offshore winds. It’s not as powerful as Sunday, but it’ll be clean and more manageable. A good chance for a few more people to get among it.

Then we drop back into another flat, ordinary run for a long time. Through the 15th, 16th, 17th, and 18th, we’re back to tiny, weak surf. There are some clean mornings, but there’s just no real swell to push through. It’s frustrating, but that’s the way it goes sometimes.

Further out, there’s a glimmer for Saturday the 19th. The long-range models are hinting at a pulse of swell, around 4 feet, with a fresh offshore wind. It’s a promising call, but it’s a week and a half away, so treat it as a possibility, not a promise.

Then it’s more of the same through the 20th, 21st, and 22nd. Small, wind-affected, and poor. A couple of these days have some longer period swell, but it’s getting chopped up by onshore winds, especially that Wednesday the 23rd when we see a bigger 7 feet push but with a strong onshore wind. That’s going to be a raw, messy close-out. With that kind of wind and size, and it being a beach/reef setup, that day looks more interesting for a kite surfer than anyone on a paddleboard.

Water temp is sitting at 56°, which is a touch cooler than average for the time of year. Not a shock, but you’ll want the thicker suit.

So, to sum it up: this week is dead, get your chores done. Next Sunday morning (13th) is the big one, a proper clean, powerful session. The following Saturday (19th) is a long-shot backup. The rest is a waiting game.

Rusty.

Short Range Forecast

Light rain (total 3mm), mostly falling on Fri morning. Very mild (max 16°C on Thu morning, min 9°C on Wed night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Very mild (max 16°C on Mon afternoon, min 8°C on Sat night). Wind will be generally light.

Wednesday
9
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
1
0
0
0
0
0
0
1
0
0
3
4
0
2
2
2
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.3
SE
8
1.1
SE
8
1
SE
8
0.7
SE
7
0.6
SE
7
0.3
SSE
16
0.3
SSE
19
0.5
S
18
0.4
SSE
18
1.2
SSW
6
0.7
SSE
16
1.6
SSE
15
1.8
SSE
15
1.5
SSE
14
1.3
SSE
13
1.1
SSE
12
1.1
SSE
13
0.9
SSE
12
0.8
SSE
12
0.7
SSE
11
0.5
SSE
10
Wave Graph
Metric surfscale
Energy kJ
206
151
110
56
44
48
72
171
102
97
269
1103
1471
943
560
377
384
213
158
107
59
Wind (km/h)
5
WNW
15
ENE
15
NW
20
NW
5
W
10
W
20
SSW
10
SE
10
WNW
15
SW
20
SSE
10
N
10
WNW
25
S
10
WNW
10
N
15
NE
20
NW
20
NW
5
ESE
25
NW
Wind State
glassy
cross-off
cross-off
cross-off
cross
cross
cross-on
cross-on
cross-off
cross-on
on
off
cross-off
on
cross-off
off
cross-off
cross-off
cross-off
cross
cross-off
High Tide
4:11PM1.86m
4:48AM1.81m
5:18PM1.94m
5:44AM1.88m
6:09PM2.01m
6:33AM1.95m
6:53PM2.05m
7:17AM1.99m
7:34PM2.05m
8:00AM2.01m
8:14PM2.02m
8:43AM2.00m
8:56PM1.97m
Low Tide
9:47AM0.55m
10:31PM0.62m
10:55AM0.51m
11:34PM0.55m
11:50AM0.46m
00:26AM0.48m
12:37PM0.42m
1:10AM0.44m
1:23PM0.42m
1:52AM0.42m
2:08PM0.44m
2:32AM0.43m
2:52PM0.48m
part cloud
part cloud
clear
part cloud
cloud
part cloud
rain showers
clear
clear
clear
clear
part cloud
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:18
6:16
6:15
6:13
6:11
6:09
6:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:52
5:52
5:53
5:54
5:54
5:55
5:57
 mm
3
Temp °C
11
12
10
16
16
12
11
12
10
12
12
10
15
14
10
14
16
13
18
17
14
Feels °C
9
9
7
12
14
9
8
9
7
8
7
7
11
8
7
11
12
9
16
15
9
  • 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 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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