
Surf Forecasts:
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 Type | Time (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 Powerful | 12AM (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 ForecastLight 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 SummaryHeavy 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 | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | S 21 | E 9 | E 9 | E 9 | E 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | S 11 | SSE 9 | SE 11 | SE 11 | SSE 10 | SSE 10 | SE 10 | SE 10 | ESE 10 | SE 9 | ESE 9 | ESE 10 |
Wave Graph | |||||||||||||||||||||
8 | 274 | 235 | 288 | 509 | 482 | 482 | 522 | 349 | 464 | 1131 | 2591 | 2469 | 2859 | 1999 | 1572 | 739 | 522 | 360 | 261 | 275 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | 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 | |||||||
— | — | 7:24 | — | — | 7:24 | — | — | 7:24 | — | — | 7:24 | — | — | 7:24 | — | — | 7:24 | — | — | 7:22 | |
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) | E 9 | E 9 | E 9 | E 9 | E 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | SSW 18 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | ESE 10 | SE 9 | ESE 9 | ESE 10 |
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) | S 21 | SSE 19 | SSE 17 | SSE 10 | SSE 10 | SSE 14 | SSE 14 | SSE 13 | SSE 10 | SSE 11 | — | — | — | SSE 15 | SSE 15 | S 14 | SSE 18 | SSE 16 | SSE 15 | SSE 14 | SSE 13 |
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) | S 13 | SSW 19 | S 11 | SSE 16 | SSE 16 | SSE 9 | SSW 8 | SSW 9 | SSE 17 | SSE 16 | — | — | — | — | — | SSE 20 | S 18 | — | — | SSW 11 | NE 12 |
4 | 69 | 21 | 51 | 48 | 16 | 22 | 17 | 28 | 51 | — | — | — | — | — | 37 | 57 | — | — | 64 | 6 | |
Wind waves Height (m) Direction Period (s) | — | NE 8 | — | — | — | SW 3 | — | — | S 10 | S 11 | SSE 9 | SE 11 | SSE 17 | SSE 10 | SSE 10 | SE 10 | — | — | — | — | — |
— | 481 | — | — | — | 2 | — | — | 234 | 434 | 1131 | 2591 | 57 | 2859 | 1999 | 1572 | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
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 | |||||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||||
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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.











