Sponge bay Surf Break

Lat Long: 38.70° S 178.06° E

Issued: 5 pm 06 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 6 Jul 2026:

  • Best quality surf: Tuesday 7 Jul, 3AM (local time) - 4ft (1.2m), 9s period, E swell with cross-offshore winds.
  • Most powerful swell: Saturday 11 Jul, 12AM (local time) - 11ft (3.5m), 10s period, SSE swell with 2,859 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 7 Jul, 3AM (local time) - 4ft (1.2m), 9s 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 Tuesday (Jul 07) at 3AM. The primary swell is predicted to be 1.2m and 9s period with a secondary swell of 0.3m and 18s. 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 3.5m 10s and forecast to arrive on Saturday (Jul 11) at 12AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Tuesday (Jul 14) at 12AM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Tue 7th Jul)4ft (1.2m) 9s
Best Surf 3AM (Tue 7th Jul)4ft (1.2m) 9s
Most Powerful12AM (Sat 11th Jul)11ft (3.5m) 10s

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


Updates in  hr  min  s Forecast update imminent

Alright, let’s break it down for Sponge Bay. Things start off quiet, so don’t rush to grab your board just yet.

The first decent window opens up on the morning of Tuesday, July 7th. We’re looking at 4ft swell from the east with a 9-second interval, and the wind is dead calm – glassy flat. That’s as clean as it gets for small waves. It’s not big, but it’ll be a blast on a log or a fish. Water temp is 56°, a bit cooler than average for the season, so grab a thicker suit.

The clean conditions stick around into the afternoon on the 7th, still glassy with waves holding at 4ft from the east. Then Wednesday, July 8th, brings a bit more size. Both sessions show 5ft waves from the east-southeast with a 10-second period and decent energy (541 combined). The wind stays light and clean – offshore in the morning and glassy in the afternoon. That Wednesday is your best bet for a good combo of size and quality, but keep your expectations in check – it’s still pretty modest.

After that, it falls apart. Thursday the 9th gets choppy with a cross-onshore breeze, and by Friday the 10th, we’ve got a gnarly 12ft swell from the south-east, but the wind is howling onshore at 25-28 mph. That’s a blown-out, ugly mess – way too big for anything but a full-on storm chase, and even then, it’s not gonna be pretty. That slop carries into Saturday with 10ft waves and more onshore wind.

Sunday the 12th eases back to 6ft, but the wind stays onshore or cross-onshore, keeping it choppy and uninviting. A little lull follows with a few clean-ish days around Monday and Tuesday, July 13th and 14th, but the swell drops to 4ft and then 3ft. Rideable, just nothing special.

Into the second week, the outlook gets smaller and patchier. A couple of mornings, like Wednesday the 15th, show 3ft waves with a long 13-second period from the east-southeast (249 combined energy), and light offshore winds. That’s got a bit of groundswell feel to it – longer period means more shape, but at a beach-and-reef setup like Sponge Bay, those long-interval east swells can run a bit straight. Worth a look if you want a clean, small session.

But after those first few days, the story is mostly poor conditions or small, messy surf. Thursday the 16th has a bit of clean 2ft-2ft, but it’s marginal. By the end of the 16-day run, we’re looking at onshore winds and tiny waves around 1ft. There’s a blip on Monday, July 20th, with a solid 4ft east swell and 12-second period, but the wind is cross-shore and conditions are only marginal. Probably not worth the drive unless you’re desperate.

The big takeaway: Wednesday, July 8th, is the standout with 5ft east-southeast swell, clean winds, and glassy conditions in the afternoon. Tuesday the 7th is a close second for pure fun on the small stuff. Everything else is either too small, too windy, or just not worth your time. A few clean days in the second week are promising for a longboard, but don’t expect any power behind them.

Rusty out.

Short Range Forecast

Light rain (total 9mm), mostly falling on Mon afternoon. Very mild (max 13°C on Thu morning, min 9°C on Mon night). Wind will be generally light.

Days 5-7 Weather Summary

Heavy rain (total 20mm), heaviest during Thu night. Very mild (max 13°C on Thu afternoon, min 9°C on Sun morning). Winds decreasing (strong winds from the S on Thu night, light winds from the SW by Sun morning).

Mon
6
Tuesday
7
Wednesday
8
Thursday
9
Friday
10
Saturday
11
Sunday
12
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
2
2
2
1
2
2
2
1
0
0
0
0
0
0
0
0
0
0
2
2
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
21
1.3
E
9
1.2
E
9
1.3
E
9
1.6
E
10
1.6
ESE
10
1.6
ESE
10
1.6
ESE
10
1.3
ESE
10
1.4
S
11
2.5
SSE
9
3.5
SE
11
3.5
SE
11
3.5
SSE
10
3
SSE
10
3
SE
10
1.9
SE
10
1.7
ESE
10
1.4
SE
9
1.3
ESE
9
1.2
ESE
10
Wave Graph
Metric surfscale
Energy kJ
8
274
235
288
509
482
482
522
349
464
1131
2591
2469
2859
1999
1572
739
522
360
261
275
Wind (km/h)
10
E
10
NW
0
WNW
0
SE
10
WSW
10
WNW
5
SSE
10
NW
15
SW
25
SSW
40
SSE
45
S
40
SSW
35
SSW
30
S
30
S
20
S
15
WSW
15
S
10
NW
10
NW
Wind State
cross
cross-off
glassy
glassy
cross
cross-off
glassy
cross-off
cross-on
cross-on
on
on
on
cross-on
on
on
on
cross-on
on
cross-off
cross-off
High Tide
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
3:12PM1.90m
3:39AM1.84m
Low Tide
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
9:28PM0.56m
10:01AM0.43m
mod rain
rain showers
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
rain showers
mod rain
light rain
rain showers
part cloud
part cloud
light rain
rain showers
part cloud
clear
clear
clear
<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
7:22
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
4:59
4:59
5:00
5:00
5:00
5:01
5:01
5:02
 mm
7
2
2
9
3
1
1
4
Temp °C
12
11
11
12
11
12
12
10
13
13
13
11
11
10
11
11
10
10
11
9
11
Feels °C
9
9
10
11
9
11
10
8
8
8
6
1
2
1
4
4
4
7
7
6
8
Swell 1
Height (m)
Direction
Period (s)
1.3
E
9
1.3
E
9
1.2
E
9
1.3
E
9
1.6
E
10
1.6
ESE
10
1.6
ESE
10
1.6
ESE
10
1.3
ESE
10
1.5
ESE
10
1.4
ESE
10
0.4
SSW
18
3.5
SE
11
2.5
SE
11
2.4
SE
10
2.3
SE
10
1.9
SE
10
1.7
ESE
10
1.4
SE
9
1.3
ESE
9
1.2
ESE
10
Energy kJ
281
274
235
288
509
482
482
522
349
464
418
124
2469
1608
1115
1020
739
522
360
261
275
Swell 2
Height (m)
Direction
Period (s)
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
0.7
SSE
10
0.8
SSE
11
0.4
SSE
15
0.3
SSE
15
0.2
S
14
0.4
SSE
18
0.4
SSE
16
0.4
SSE
15
0.4
SSE
14
0.4
SSE
13
Energy kJ
8
69
58
21
18
41
37
33
104
130
79
46
16
103
81
79
66
55
Swell 3
Height (m)
Direction
Period (s)
0.1
S
13
0.3
SSW
19
0.3
S
11
0.3
SSE
16
0.3
SSE
16
0.3
SSE
9
0.4
SSW
8
0.3
SSW
9
0.2
SSE
17
0.3
SSE
16
0.2
SSE
20
0.3
S
18
0.5
SSW
11
0.1
NE
12
Energy kJ
4
69
21
51
48
16
22
17
28
51
37
57
64
6
Wind waves
Height (m)
Direction
Period (s)
1.9
NE
8
0.4
SW
3
1.1
S
10
1.4
S
11
2.5
SSE
9
3.5
SE
11
0.3
SSE
17
3.5
SSE
10
3
SSE
10
3
SE
10
Energy kJ
481
2
234
434
1131
2591
57
2859
1999
1572
Nearest Offshore or Glassy
Rating
(10 max)
2
2
2
2
3
2
2
2
3
4
1
2
2
4
4
1
3
3
3
2
2
Distance (km)
1
0
0
0
3
0
0
0
3
53
118
118
121
68
68
121
10
3
36
0
0
Best forecast wave conditions in Gisborne and Mahia
Rating
(10 max)
2
3
2
3
4
3
3
3
3
3
3
3
2
2
Best forecast wave conditions in New Zealand
Rating
(10 max)
4
5
4
4
4
4
4
4
6
7
5
5
4
5
5
4
4
4
4
3
3
Header Global
Rating
(10 max)
7
8
7
5
5
9
8
9
8
7
5
6
5
8
5
5
5
5
5
9
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 
submit an eyeball surf report

Quick surf report for Sponge bay:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Sponge bay surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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.

Nearest locationNearest