Sponge bay Surf Break

Lat Long: 38.70° S 178.06° E

Sponge bay Surf Forecast and Surf Report

Issued: 11 am 25 Jul 2026 (local time)

Forecast update in  hr  min

Today's Sponge bay sea temperature is
12.6° C
1.8° 

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 25 Jul 2026:

  • Best quality surf: Wednesday 29 Jul, 6PM (local time) - 5.5ft (1.7m), 12s period, ESE swell with cross-offshore winds.
  • Most powerful swell: Tuesday 28 Jul, 3AM (local time) - 10ft (3.0m), 12s period, SSE swell with 2,970 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 29 Jul, 6PM (local time) - 5.5ft (1.7m), 12s period with ESE 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 (Jul 29) at 6PM. The primary swell is predicted to be 1.7m and 12s period with a secondary swell of 0.2m and 10s. 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 3.0m 12s and forecast to arrive on Tuesday (Jul 28) at 3AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 6s period and expected on Friday (Jul 31) at 6PM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 6PM (Wed 29th Jul)5.5ft (1.7m) 12s
Best Surf 6PM (Wed 29th Jul)5.5ft (1.7m) 12s
Most Powerful 3AM (Tue 28th Jul)10ft (3.0m) 12s

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


The Lowdown

Right, gather ‘round, crew. Let’s talk about Sponge Bay. This is a bit of a tricky one, and to be honest, it’s a waiting game. The next two weeks are not setting up for a classic run, but there are a couple of windows that might just get your heart racing.

The first real sniff of decent surf kicks off on Saturday, 25th July. It’s nothing to shout about with a small 3ft easterly swell, but the morning has a cross-off breeze from the NW, keeping things clean. The water’s sitting at 55°, which is a bit colder than normal for this time of year, so you’ll be wanting the thick rubber. The combined energy is moderate (187), but it’s small and short period. Honestly, it’s a slow start.

We then hit a real rough patch from Sunday, 26th July through to the end of the month. The wind turns nasty, swinging cross-on and onshore, and the swell gets messy and jumbled. Even when the height picks up—like the 8ft to 10ft on Monday, 27th July—the wind is howling out of the SW and SSW, making it a complete write-off. That’s a lot of energy (1949 to 2803 on the combined scale) but it’s all blown out. Not worth paddling out for.

The first real glimmer of hope comes on Friday, 31st July. The morning is a beauty: light offshore breezes from the north, clean lines, with a small 4ft ESE swell. The combined energy is a moderate 397, and the period is a nice 11 seconds. It’s small, but it’s clean. You’ll have the place to yourself, too, as it’s a fairly consistent spot but crowds are only sometimes an issue.

Now, the standout. Mark your calendars for Monday, 3rd August. This is the one. The morning session is going to be *excellent* for experienced surfers. We’re looking at a solid 8ft swell from the east, with a period of 10 seconds and a combined energy of 1622. The wind is a whisper-light WNW, making it clean as a whistle. This is big, powerful stuff—over 8ft, so it’s not for the groms—but for the crew who know what they’re doing, it’ll be a session to remember. That’s the best on offer in this whole outlook.

After that, things get messy again. From Tuesday, 4th August, through to the end of the forecast on Sunday, 9th August, it’s a battle. The wind is almost constantly onshore or cross-on, and the swell is short and choppy. There’s a lot of energy in the water, but it’s all wind-slop. It’s honestly looking more interesting for kite-surfing than a proper paddle session, given the strong winds and lumpy conditions.

So, to sum it up: the first week is a bust, with a small, clean window on the 31st of July. The real prize is the morning of Monday, 3rd August. After that, it’s a long, frustrating gap of poor conditions. But hey, it’s Sponge Bay—it tends not to stay poor for long, and the forecasts can change. Keep an eye on the charts.

Rusty.

Short Range Forecast

Light rain (total 5mm), mostly falling on Sat night. Very mild (max 13°C on Sat morning, min 6°C on Sun night). Mainly fresh winds.

Days 4-6 Weather Summary

Some drizzle, heaviest during Tue morning. Very mild (max 14°C on Thu afternoon, min 7°C on Wed night). Winds decreasing (fresh winds from the S on Tue morning, light winds from the S by Wed morning).

Saturday
25
Sunday
26
Monday
27
Tuesday
28
Wednesday
29
Thursday
30
Friday
31
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
0
0
0
0
0
0
0
0
0
0
0
2
2
3
1
1
2
2
1
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.8
E
12
0.8
E
12
2.2
SSW
7
2.2
S
8
1.1
ESE
14
1.9
S
8
2.5
S
9
3
S
10
3
SSE
12
2.2
SE
12
2.1
ESE
12
1.9
ESE
13
1.8
ESE
13
1.7
ESE
12
1.6
ESE
12
1.4
ESE
12
1.3
ESE
11
1.2
ESE
11
1.1
ESE
11
0.9
ESE
11
0.7
ESE
11
Wave Graph
Metric surfscale
Energy kJ
174
169
421
659
415
489
1028
1594
2102
1462
1299
1245
1028
861
725
521
387
370
314
217
123
Wind (km/h)
15
NW
25
SW
35
SW
20
SW
30
SSW
20
WSW
30
SW
30
SSW
25
SSW
25
SSW
30
S
20
S
5
S
10
E
15
NW
15
NW
15
NNW
15
NW
10
N
10
N
15
N
Wind State
cross-off
cross-on
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross-on
on
on
on
on
cross
cross-off
cross-off
cross-off
cross-off
off
off
off
High Tide
2:25PM1.76m
2:39AM1.70m
3:12PM1.71m
3:34AM1.65m
4:09PM1.68m
4:36AM1.63m
5:20PM1.69m
5:36AM1.66m
6:18PM1.74m
6:27AM1.71m
7:03PM1.80m
7:13AM1.77m
7:44PM1.87m
Low Tide
8:41PM0.79m
9:00AM0.72m
9:33PM0.82m
9:52AM0.75m
10:32PM0.84m
10:51AM0.76m
11:34PM0.83m
11:47AM0.74m
00:30AM0.80m
12:36PM0.70m
1:18AM0.75m
1:20PM0.65m
2:00AM0.69m
part cloud
part cloud
rain showers
part cloud
part cloud
part cloud
part cloud
light rain
light rain
rain showers
cloud
cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:16
7:15
7:13
7:13
7:13
7:11
7:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:12
5:13
5:14
5:14
5:15
5:15
5:16
 mm
2
1
2
1
2
Temp °C
13
12
10
10
10
9
10
10
9
11
11
11
11
11
9
13
14
10
15
17
12
Feels °C
8
6
2
4
2
3
2
3
3
4
4
5
8
8
5
8
9
6
13
14
10
  • 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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