Sponge bay Surf Break

Lat Long: 38.70° S 178.06° E

Sponge bay Surf Forecast and Surf Report

Issued: 11 pm 23 Jul 2026 (local time)

Forecast update in  hr  min

Today's Sponge bay sea temperature is
12.7° C
1.7° 

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 23 Jul 2026:

  • Best quality surf: Tuesday 28 Jul, 12AM (local time) - 5.5ft (1.7m), 13s period, ESE swell with cross-offshore winds.
  • Most powerful swell: Tuesday 28 Jul, 6AM (local time) - 5.5ft (1.7m), 13s period, ESE swell with 1,045 kJ wave energy.
  • Next surfable swell (1★+): Friday 24 Jul, 6PM (local time) - 1.5ft (0.5m), 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 Friday (Jul 24) at 6PM. The primary swell is predicted to be 0.5m and 10s period with a secondary swell of 0.2m and 9s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Sponge bay in the next 16 days are 1.7m 13s and forecast to arrive on Tuesday (Jul 28) at 6AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 7s period and expected on Saturday (Jul 25) at 3AM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 6PM (Fri 24th Jul)1.5ft (0.5m) 10s
Best Surf12AM (Tue 28th Jul)5.5ft (1.7m) 13s
Most Powerful 6AM (Tue 28th Jul)5.5ft (1.7m) 13s

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


The Lowdown

Righto, grab a coffee and settle in, let’s talk about the next couple of weeks at Sponge Bay. It’s a bit of a mixed bag, but there are a few windows that’ll get the blood pumping.

Straight up, we’re in a quiet spell. The first few days are small and messy, not really worth paddling out for. But by Tuesday morning, July 28th, things start to wake up. That’s where the first real stand-out sits.

Tuesday morning, July 28th is your pick. We’ve got a clean 6 ft swell rolling in from the ESE, with a solid 13-second period behind it. That’s proper groundswell energy, and it’s coming in with light cross-offshore winds. The combined energy is sitting at 1041, which is a solid, moderate push. The water temp is about average for this time of year. It’s clean, it’s got shape, and it’s a good, strong option for a surf.

Wednesday, July 29th is another good one. The morning is clean with a 5 ft ESE swell and a 12-second period, and the afternoon turns glassy with offshore winds from the N. The energy is solid (692-819), and the conditions are lovely. That afternoon session is the best of the two.

Then we hit a bit of a lull. The end of July and start of August drop off again, with weaker, smaller swell and onshore winds. Not worth the effort.

Saturday, August 1st is a real standout, but with a big caveat. The morning sees a 7 ft S swell (8 seconds, moderate energy at 1130) with clean cross-offshore winds. That’s a good, punchy wave. But the afternoon? That’s for experts only. The swell jumps to 10 ft from the S, with a 10-second period, and the combined energy rockets to 3080. That’s a huge, powerful swell. It’s too big for this spot for most, and the wind and tide are favorable, but it’s a beast. If you’re experienced and you know this break, it’s going to be a day to remember. For everyone else, give it a wide berth.

Sunday, August 2nd is a great follow-up. The morning is clean with a 8 ft S swell (10 seconds, 1530 energy) – that’s excellent for experienced surfers. The afternoon drops to 6 ft, still clean, and a solid session for anyone comfortable in the size.

After that, it fades again. A few days of small, clean conditions but nothing that’ll get you excited. Then Thursday, August 6th morning pops up with a clean 6 ft SSE swell and a very long 15-second period. That’s proper groundswell, lots of energy (1232), and it’ll be clean and lined up. The long period means it’ll be a bit more walled up at the beach, but it’s a good one for the point.

Overall, the best of the bunch is Tuesday morning, July 28th for a solid, all-round session, and Sunday, August 2nd for the experienced crew looking for a bit more power. The long-range stuff on August 6th is promising, but you know how it is – a week out, keep an eye on it.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Sat night. Very mild (max 15°C on Fri morning, min 8°C on Thu night). Winds increasing (light winds from the NNW on Fri morning, fresh winds from the SW by Sat night).

Days 5-7 Weather Summary

Mostly dry. Very mild (max 15°C on Wed afternoon, min 6°C on Sun night). Wind will be generally light.

Friday
24
Saturday
25
Sunday
26
Monday
27
Tuesday
28
Wednesday
29
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
1
0
0
0
1
0
1
1
0
3
3
2
3
3
3
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.3
SSE
11
0.3
SSE
10
0.4
E
8
0.6
E
11
0.8
E
12
0.8
E
12
2.5
SSW
7
2.1
S
8
1.7
S
8
0.9
ESE
13
1.2
ESE
13
1.6
SE
13
1.7
ESE
13
1.7
ESE
13
1.7
ESE
13
1.6
ESE
13
1.5
ESE
12
1.5
ESE
13
1.3
ESE
12
Wave Graph
Metric surfscale
Energy kJ
23
19
21
82
172
171
674
588
392
298
461
828
975
972
972
799
666
745
510
Wind (km/h)
20
NW
15
NNW
20
NNW
20
NNE
15
NW
30
W
35
SW
15
WSW
25
SSW
15
WSW
10
W
20
SSW
15
WNW
10
WNW
10
ESE
10
NW
15
NNW
15
N
20
NW
Wind State
cross-off
cross-off
cross-off
off
cross-off
cross
cross-on
cross-on
on
cross
cross
cross-on
cross-off
cross-off
cross
cross-off
cross-off
off
cross-off
High Tide
1:10AM1.87m
1:42PM1.82m
1:52AM1.78m
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
Low Tide
7:32AM0.62m
7:52PM0.75m
8:14AM0.67m
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
part cloud
part cloud
clear
part cloud
part cloud
part cloud
rain showers
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:16
7:16
7:15
7:13
7:13
7:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:10
5:12
5:13
5:14
5:14
5:15
 mm
1
Temp °C
9
15
15
13
13
13
10
10
10
8
10
11
7
10
10
8
12
15
10
Feels °C
5
10
10
9
7
6
2
4
4
3
5
5
3
8
7
5
8
11
5
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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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