
Surf Forecasts:
Sponge bay surf forecast from 27 Jul 2026:
- Best quality surf: Wednesday 29 Jul, 6AM (local time) - 5.5ft (1.7m), 13s period, ESE swell with cross-offshore winds.
- Most powerful swell: Sunday 2 Aug, 9AM (local time) - 11ft (3.5m), 12s period, S swell with 3,771 kJ wave energy.
- Next surfable swell (1★+): Wednesday 29 Jul, 6AM (local time) - 5.5ft (1.7m), 13s 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 6AM. The primary swell is predicted to be 1.7m and 13s period with a secondary swell of 0.3m 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 3.5m 12s and forecast to arrive on Sunday (Aug 02) at 9AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 6s period and expected on Friday (Jul 31) at 3AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Wed 29th Jul) | 5.5ft (1.7m) 13s |
| Best Surf | 6AM (Wed 29th Jul) | 5.5ft (1.7m) 13s |
| Most Powerful | 9AM (Sun 2nd Aug) | 11ft (3.5m) 12s |
Table - best surf conditions forecast for Sponge bay over the next 16 days.
The Lowdown
Righto, let’s have a look at what’s cookin’ at Sponge Bay over the next couple of weeks.
First up, we’ve got a bit of a slow start. There’s a bit of swell in the water on Tuesday the 28th of July, but it’s pretty average – a solid 7 ft SE swell pushing through with a 13-second period, so there’s some energy there (combined energy of 3135), but that cross-on wind from the SW is making it choppy and messy. Not one to get excited about. The water’s sitting at 55°, which is a bit colder than normal for this time of year, so you’ll want a good steamer.
Things look a lot better on Wednesday the 29th of July. The swell drops a touch to 6 ft, still out of the ESE with a nice 13-second period, and the wind swings to a light WNW cross-off. That’ll clean things right up nicely. This is the standout session of the first week – clean, fun waves at Sponge Bay, not too big, not too small. The combined energy (873) is moderate, but with those clean conditions, it’ll be a good morning. The crowd meter says “sometimes,” so you might have a few others out, but nothing too hectic.
Thursday the 30th is still rideable with clean conditions in the morning, dropping to 4 ft, but the energy is fading (514). It’s surfable, but it’s not gonna set the world on fire. After that, we go into a bit of a lull. Friday and Saturday are small and weak, with the swell dropping below 3 ft and the energy tanking. Sunday the 2nd of August sees a spike in size – 12 ft from the S with a massive 5860 combined energy – but the wind is howling onshore from the SSW, making it a total write-off for paddle surfing. That’s a kite day if I’ve ever seen one.
Monday the 3rd of August is another big, messy one with onshore winds, and the swell is still over 10 ft. Not for the faint-hearted, and definitely not for beginners. The period drops to 9 seconds, so it’s gonna be choppy and lumpy. The next few days are a mix of small, weak swell and poor wind, with a bit of a clean window on Wednesday the 5th of August morning – 2 ft of SSE swell with a very long 14-second period and light WNW cross-off winds. That’s a glassy, clean little wave, but it’s small. The combined energy is only 284, so it’s weak.
The real standout for the whole outlook is Friday the 7th of August afternoon. Now, I don’t usually get excited about a break that’s too big, but the forecast has a 16 ft S swell rolling in with a 14-second period, and the combined energy is a staggering 17523. The wind is a gentle cross-onshore from the SSE, which is okay, but the problem is that the swell is predicted to be too big for Sponge Bay. That’s expert territory only, and even then, it’s gonna be a wild, heavy beast. If you’re a seasoned charger, that’s your window. The break is a beach and reef setup, so with that much power, it’s not for the faint-hearted.
After that, the forecast gets messy with strong winds and rain, and the swell drops off again. The 16-day window has a few good moments, but the absolute best is Wednesday morning the 29th of July – clean, fun, and manageable. The big Friday the 7th of August is a serious, serious option if you’ve got the skills and the nerve.
Rusty.
Short Range ForecastMostly dry. Very mild (max 15°C on Thu morning, min 8°C on Tue morning). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 19mm), heaviest on Sun night. Very mild (max 16°C on Fri afternoon, min 6°C on Sun night). Mainly fresh winds. | ||||||||||||||||||||
Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | SE 13 | ESE 13 | ESE 13 | ESE 13 | ESE 12 | ESE 12 | ESE 12 | ESE 11 | E 11 | ESE 11 | ESE 11 | ESE 11 | SE 15 | SE 16 | SSW 10 | S 12 | S 11 | SE 9 | SSE 9 | SE 10 | SE 9 |
Wave Graph | |||||||||||||||||||||
1391 | 1359 | 1134 | 853 | 749 | 603 | 429 | 314 | 251 | 209 | 164 | 128 | 64 | 39 | 1778 | 3771 | 2118 | 711 | 1499 | 237 | 343 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-on | cross-on | cross-on | on | on | on | on | cross-on |
High Tide | 5:20PM1.69m | 5:36AM1.66m | 6:18PM1.74m | 6:27AM1.71m | 7:03PM1.80m | 7:13AM1.77m | 7:44PM1.87m | 7:57AM1.82m | 8:24PM1.93m | 8:38AM1.87m | 9:03PM1.97m | 9:19AM1.89m | 9:43PM1.98m | ||||||||
Low Tide | 10:51AM0.76m | 11:34PM0.83m | 11:47AM0.74m | 00:30AM0.80m | 12:36PM0.70m | 1:18AM0.75m | 1:20PM0.65m | 2:00AM0.69m | 2:02PM0.60m | 2:41AM0.63m | 2:43PM0.56m | 3:20AM0.58m | 3:24PM0.54m | ||||||||
7:13 | — | — | 7:13 | — | — | 7:11 | — | — | 7:11 | — | — | 7:09 | — | — | 7:09 | — | — | 7:07 | — | — | |
— | 5:14 | — | — | 5:15 | — | — | 5:15 | — | — | 5:16 | — | — | 5:17 | — | — | 5:19 | — | — | 5:20 | — | |
mm | — | — | — | — | — | — | — | — | — | 1 | — | — | — | 1 | 3 | 2 | 3 | 9 | 2 | 3 | — |
Temp °C | 10 | 11 | 10 | 12 | 14 | 10 | 15 | 15 | 13 | 15 | 16 | 12 | 15 | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 9 |
Feels °C | 5 | 6 | 6 | 9 | 10 | 5 | 11 | 10 | 9 | 10 | 11 | 7 | 10 | 1 | 2 | 2 | 1 | 3 | 4 | 5 | 5 |
Swell 1 Height (m) Direction Period (s) | SE 13 | ESE 13 | ESE 13 | ESE 13 | ESE 12 | ESE 12 | ESE 12 | ESE 11 | E 11 | ESE 11 | ESE 11 | ESE 11 | E 11 | ESE 10 | SSE 10 | SSE 12 | SSE 12 | SSE 11 | SE 7 | SE 7 | SE 9 |
1391 | 1359 | 1134 | 853 | 749 | 603 | 429 | 314 | 251 | 209 | 164 | 128 | 64 | 20 | 961 | 2081 | 1291 | 126 | 309 | 237 | 343 | |
Swell 2 Height (m) Direction Period (s) | ESE 13 | SSW 11 | SSW 10 | SSW 10 | S 10 | S 18 | SSE 16 | SSE 15 | SSE 14 | NE 6 | ENE 5 | SE 15 | SE 15 | SE 16 | E 16 | ENE 16 | E 15 | E 14 | SSE 10 | SE 10 | ESE 11 |
1269 | 24 | 22 | 20 | 2 | 25 | 85 | 71 | 37 | 5 | 3 | 9 | 55 | 39 | 5 | 24 | 4 | 4 | 278 | 230 | 70 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | S 16 | S 14 | — | NE 12 | — | SSE 14 | S 13 | S 12 | E 13 | ESE 12 | ENE 16 | E 10 | E 10 | — | S 22 | SSE 20 | SSE 18 |
— | — | — | — | 5 | 16 | — | 6 | — | 18 | 12 | 11 | 14 | 30 | 25 | 8 | 2 | — | 9 | 38 | 63 | |
Wind waves Height (m) Direction Period (s) | S 8 | S 8 | — | — | — | NNW 3 | N 3 | NNE 5 | NNE 6 | NE 7 | — | NW 3 | WNW 3 | SW 3 | SSW 10 | S 12 | S 11 | SE 9 | SSE 9 | — | — |
475 | 266 | — | — | — | 1 | 5 | 13 | 18 | 46 | — | 2 | 1 | 2 | 1778 | 3771 | 2118 | 711 | 1499 | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 3 | 44 | 3 | 0 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 0 | 97 | 53 | 53 | 122 | 10 | 68 | 118 | 3 |
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.










