
Surf Forecasts:
Sponge bay surf forecast from 27 Jul 2026:
- Best quality surf: Sunday 2 Aug, 3AM (local time) - 11ft (3.5m), 9s period, S swell with cross-shore winds.
- Most powerful swell: Sunday 2 Aug, 9PM (local time) - 13ft (4.0m), 10s period, S swell with 3,601 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 4.0m 10s and forecast to arrive on Sunday (Aug 02) at 9PM. Winds are predicted to be 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 12AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Wed 29th Jul) | 5.5ft (1.7m) 13s |
| Best Surf | 3AM (Sun 2nd Aug) | 11ft (3.5m) 9s |
| Most Powerful | 9PM (Sun 2nd Aug) | 13ft (4.0m) 10s |
Table - best surf conditions forecast for Sponge bay over the next 16 days.
The Lowdown
Right, mate. Rusty here. Let’s have a look at what’s coming down the pipe for Sponge Bay.
We’re in for a bit of a rough patch at the start. The next few days look pretty average, with onshore winds and a messy ocean. The water is a bit colder than normal for this time of year at 55°F. There’s a decent amount of energy in the water, but it’s all windblown and lumpy. Monday afternoon has 8ft swell from the S but with a fresh cross-onshore breeze, it’s just a choppy mess. Tuesday and the rest of the week don’t offer much for a paddle surfer.
Things start to clean up on Wednesday morning, the 29th of July. We get a nice 6ft ESE swell with a light offshore wind from the NW. The combined energy is moderate (877). The wave period is a long 13 seconds, so it’s a proper groundswell. This is a solid beach and reef setup, so the long period should push in nicely. That afternoon stays clean with 5ft waves and a gentle offshore breeze. It’s looking like the best of the early run, but it’s nothing to write home about.
Thursday the 30th has a drop in size to 4ft, but with a clean offshore wind from the NNW. It’s tidy, but the energy is getting weaker (512). The swell drops right off into Friday and the weekend, with onshore winds returning. Saturday the 1st of August is a write-off with rain showers and a fresh cross-onshore wind.
Then comes a big pulse. Sunday the 2nd of August gets hammered with a massive 15ft SSW swell, but it’s accompanied by a strong cross-onshore wind. The combined energy is huge (9670), but the wind is making it dangerous and unrideable. This continues into Monday the 3rd with even bigger swell (15ft) and onshore winds. This is not for paddle surfing; it’s more of a kite-surfing scene if the wind holds.
The next real standout window is Tuesday the 4th of August. We get a clean 6ft SE swell with a light offshore wind from the NNE. The combined energy is moderate (973) and the period is a nice 12 seconds. The morning will be uncrowded and glassy. That afternoon is even cleaner with a 5ft SE swell and a light offshore breeze. This is the best on offer in the whole forecast—clean, long-period groundswell with easy paddling. It’s not too big, so it’s good for all levels, but it’s a bit of a wait.
The swell drops again on Wednesday and Thursday the 5th and 6th of August, with onshore winds and poor conditions returning. Then, on Friday the 7th of August, we see another huge spike. A 13ft S swell rolls in, but the guidance says it’s too big for this break. The combined energy is very strong (4745). The wind is cross-shore, but the size is expert territory only. Saturday the 8th of August is dangerously big again (13ft) with a clean offshore wind in the morning, but it’s still too big for most. Sunday the 9th of August has a massive 16ft SSE swell with a slight cross-on breeze. The energy is through the roof (13198), but it’s overwhelming for this spot.
The last few days of the forecast, from the 10th to the 11th of August, drop back to smaller, cleaner waves (4ft to 7ft), but the wind is variable and the conditions are marginal.
So, to sum it up: the clear winner is Tuesday the 4th of August. It’s the only day everything comes together—clean, offshore wind, a solid 6ft SE groundswell, and uncrowded. The Wednesday morning of the 29th of July is a decent backup, but it’s not a standout. The rest of the period is either blown out, too big, or too small.
Stay salty, and keep an eye on the Monday the 10th for a potential sneaky session.
Rusty.
Short Range ForecastMostly dry. Very mild (max 16°C on Thu afternoon, min 8°C on Mon night). Winds decreasing (fresh winds from the SSW on Mon night, light winds from the WNW by Tue night). | Days 5-7 Weather SummaryLight rain (total 6mm), mostly falling on Sat afternoon. Very mild (max 15°C on Fri morning, min 6°C on Sat night). Winds increasing (light winds from the N on Thu night, strong winds from the SW by Sun afternoon). | ||||||||||||||||||
Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | ||||||||||||||
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 | SE 13 | ESE 13 | ESE 13 | ESE 13 | ESE 12 | ESE 12 | ESE 12 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | SE 15 | SE 16 | SSE 8 | S 9 | SSE 9 | S 10 |
Wave Graph | |||||||||||||||||||
1545 | 1391 | 1359 | 1134 | 853 | 749 | 603 | 429 | 314 | 263 | 213 | 164 | 130 | 64 | 62 | 737 | 1499 | 711 | 3226 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | 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 | cross-on | on |
High Tide | 4:36AM1.63m | 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 | |||||||
Low Tide | 10:32PM0.84m | 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 | |||||||
— | 7:13 | — | — | 7:13 | — | — | 7:11 | — | — | 7:11 | — | — | 7:09 | — | — | 7:09 | — | — | |
— | — | 5:14 | — | — | 5:15 | — | — | 5:15 | — | — | 5:16 | — | — | 5:17 | — | — | 5:19 | — | |
mm | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — | 2 | — | 1 | 1 | 10 |
Temp °C | 10 | 10 | 11 | 11 | 12 | 14 | 10 | 15 | 16 | 14 | 15 | 15 | 13 | 11 | 9 | 8 | 8 | 9 | 9 |
Feels °C | 3 | 5 | 6 | 7 | 9 | 10 | 6 | 10 | 12 | 9 | 10 | 10 | 7 | 6 | 0 | 1 | -1 | 0 | -3 |
Swell 1 Height (m) Direction Period (s) | SE 13 | SE 13 | ESE 13 | ESE 13 | ESE 13 | ESE 12 | ESE 12 | ESE 12 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | E 11 | ESE 12 | ESE 14 | SSE 9 | SSE 12 | SSE 10 |
1545 | 1391 | 1359 | 1134 | 853 | 749 | 603 | 429 | 314 | 263 | 213 | 164 | 130 | 64 | 47 | 78 | 747 | 294 | 1427 | |
Swell 2 Height (m) Direction Period (s) | S 13 | ESE 13 | SSW 11 | SSW 10 | SSW 10 | S 10 | SSE 18 | SSE 16 | SSE 15 | SSE 14 | S 16 | S 14 | SE 15 | SE 15 | SE 16 | E 16 | SSE 13 | NE 15 | S 19 |
14 | 1269 | 24 | 22 | 20 | 2 | 63 | 89 | 72 | 38 | 19 | 16 | 9 | 56 | 62 | 5 | 58 | 8 | 7 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | S 16 | S 18 | — | S 18 | ENE 6 | SE 16 | NE 5 | S 12 | S 7 | S 11 | NE 16 | SE 14 | — | — |
— | — | — | — | — | 5 | 25 | — | 25 | 3 | 10 | 1 | 11 | 4 | 9 | 10 | 47 | — | — | |
Wind waves Height (m) Direction Period (s) | S 10 | S 8 | S 8 | — | — | — | N 3 | N 3 | NE 4 | NNE 6 | NNE 5 | NW 2 | N 5 | — | SW 3 | SSE 8 | S 9 | SSE 9 | S 10 |
1150 | 535 | 259 | — | — | — | 5 | 7 | 3 | 29 | 3 | 2 | 2 | — | 2 | 737 | 1499 | 711 | 3226 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 53 | 3 | 10 | 3 | 0 | 0 | 1 | 1 | 1 | 0 | 5 | 3 | 3 | 3 | 68 | 42 | 68 | 68 | 294 |
Best forecast wave conditions in Gisborne and Mahia | |||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.










