Sponge bay Surf Break

Lat Long: 38.70° S 178.06° E

Sponge bay Surf Forecast and Surf Report

Issued: 11 pm 16 Jul 2026 (local time)

Forecast update in  hr  min

Today's Sponge bay sea temperature is
13.7° 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 16 Jul 2026:

  • Best quality surf: Friday 17 Jul, 6PM (local time) - 5ft (1.6m), 15s period, ESE swell with cross-offshore winds.
  • Most powerful swell: Sunday 19 Jul, 12AM (local time) - 5.5ft (1.7m), 21s period, SSE swell with 2,476 kJ wave energy.
  • Next surfable swell (1★+): Friday 17 Jul, 9AM (local time) - 4.5ft (1.4m), 16s 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 Friday (Jul 17) at 9AM. The primary swell is predicted to be 1.4m and 16s period with a secondary swell of 0.5m and 5s. 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 1.7m 21s and forecast to arrive on Sunday (Jul 19) at 12AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 4s period and expected on Wednesday (Jul 22) at 12AM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Fri 17th Jul)4.5ft (1.4m) 16s
Best Surf 6PM (Fri 17th Jul)5ft (1.6m) 15s
Most Powerful12AM (Sun 19th Jul)5.5ft (1.7m) 21s

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


The Lowdown

Alright crew, Rusty here, breakin' down Sponge Bay for ya.

First thing’s first, the water’s about normal for this time of year. The real action is in the first week, then it gets skinny for a stretch before some small clean windows show up late.

The best swell of the run kicks off Friday, July 17th and runs through Monday morning, July 20th. The morning sessions are the call. We’ve got a solid groundswell from the ESE at 5ft to 5ft with a long 16-second period, packing some serious energy (combined energy around 1060 to 1251). The wind is light and cross-offshore, so the surface is glassy and clean. This is Sponge Bay (beach and reef) doing its thing. The swell is over 5ft, so it’s a bit much for beginners, but for the rest of us, it’s a proper session. Crowds can show up sometimes, so expect company.

Sunday, July 19th morning has a big 5ft SSE swell with a very long 19-second period, but the conditions are a bit questionable. That long period can make the beach break a bit straight, so the reef might be the better call. The afternoon turns onshore, so morning is your only shot.

After Monday morning, it gets rough. Tuesday, July 21st afternoon gives you a glassy window with 5ft SSE swell, but the morning is a mess with strong cross-onshore winds. It’s a one-hit wonder.

Then we hit a dry spell from Wednesday, July 22nd through to Thursday, July 30th. The swell drops off, the period gets short, and the wind is mostly onshore or messy. There are a few clean mornings with tiny, weak swell (2ft to 4ft), but the energy is low (under 300) and the waves are ordinary. The weekend of the 25th and 26th has offshore winds, but the swell is tiny—barely worth paddling for. This stretch is more of a kite scene than a paddle surf scene.

We get a little life in the second week. Monday, July 28th morning and Wednesday, July 29th morning both have clean, cross-off conditions and 4ft swell, but the period is short (8-9 seconds), so the waves will be a bit sloppy. The energy is moderate (around 273-283). It’s surfable, but nothing special.

The long-range hope is Saturday, August 1st morning. That’s two weeks out, so take it with a grain of salt, but the forecast is pretty: a clean, glassy morning with 3ft of ESE swell, a 14-second period, and low energy (325). It’s small, but with that period and clean conditions, it’ll be a fun little wave.

Bottom line: the first weekend is the big winner. After that, you’re hunting for small, clean windows.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 13°C on Thu night, min 8°C on Fri night). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 7mm), mostly falling on Tue morning. Very mild (max 12°C on Mon morning, min 9°C on Tue night). Wind will be generally light.

Friday
17
Saturday
18
Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
3
3
3
3
2
4
3
1
3
3
1
3
0
3
2
2
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)
1.2
ESE
16
1.4
ESE
16
1.5
ESE
16
1.5
ESE
15
1.3
ESE
14
1.3
ESE
14
1.7
SSE
21
1.5
SSE
19
1.3
SSE
18
1.2
SSE
16
1.2
SSE
15
1.2
SSE
15
1.6
SSE
19
1.5
SSE
17
1.5
SSE
16
1.2
SSE
14
0.9
SSE
13
0.8
SSE
12
0.7
SSE
11
Wave Graph
Metric surfscale
Energy kJ
779
1029
1107
936
722
672
2476
1438
961
679
629
580
1867
1223
1040
545
261
169
115
Wind (km/h)
15
SW
5
WNW
10
ENE
10
NNW
10
WNW
10
SSE
10
WNW
5
W
15
S
10
NW
10
NW
10
SE
10
WSW
25
ESE
5
SW
10
NW
5
WNW
10
S
10
W
Wind State
cross-on
cross-off
cross-off
off
cross-off
cross-on
cross-off
cross
on
cross-off
cross-off
cross-on
cross-on
cross-on
glassy
cross-off
cross-off
on
cross
High Tide
7:58AM1.95m
8:28PM2.11m
8:53AM1.99m
9:21PM2.12m
9:45AM2.01m
10:13PM2.11m
10:36AM2.00m
11:02PM2.08m
11:25AM1.98m
11:47PM2.03m
12:13PM1.94m
00:29AM1.96m
Low Tide
1:58AM0.54m
2:07PM0.45m
2:51AM0.53m
3:01PM0.47m
3:41AM0.52m
3:54PM0.50m
4:31AM0.53m
4:45PM0.54m
5:19AM0.54m
5:32PM0.59m
6:06AM0.56m
6:19PM0.64m
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
part cloud
rain showers
light rain
light rain
part cloud
cloud
cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:20
7:20
7:20
7:18
7:18
7:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:06
5:07
5:07
5:07
5:08
5:09
 mm
2
3
2
Temp °C
13
12
12
10
11
11
10
11
12
11
12
12
11
11
11
10
11
12
11
Feels °C
10
11
10
8
9
8
8
9
9
9
10
9
10
6
10
8
10
10
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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