
Surf Forecasts:
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 Type | Time (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 Powerful | 12AM (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 ForecastMostly dry. Very mild (max 13°C on Thu night, min 8°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryLight 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 | |
Swell Height Map | |||||||||||||||||||
Wave Height (m) Direction Period (s) | ESE 16 | ESE 16 | ESE 16 | ESE 15 | ESE 14 | ESE 14 | SSE 21 | SSE 19 | SSE 18 | SSE 16 | SSE 15 | SSE 15 | SSE 19 | SSE 17 | SSE 16 | SSE 14 | SSE 13 | SSE 12 | SSE 11 |
Wave Graph | |||||||||||||||||||
779 | 1029 | 1107 | 936 | 722 | 672 | 2476 | 1438 | 961 | 679 | 629 | 580 | 1867 | 1223 | 1040 | 545 | 261 | 169 | 115 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | 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 | |||||||
— | 7:20 | — | — | 7:20 | — | — | 7:20 | — | — | 7:18 | — | — | 7:18 | — | — | 7:18 | — | — | |
— | — | 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 |
Swell 1 Height (m) Direction Period (s) | ESE 16 | ESE 16 | ESE 16 | ESE 15 | ESE 14 | ESE 14 | SSE 21 | SSE 19 | SSE 18 | SSE 16 | SSE 15 | SSE 15 | SSE 19 | SSE 17 | SSE 16 | SSE 14 | SSE 13 | SSE 12 | SSE 11 |
779 | 1029 | 1107 | 936 | 722 | 672 | 2476 | 1438 | 961 | 679 | 629 | 580 | 1867 | 1223 | 1040 | 545 | 261 | 169 | 115 | |
Swell 2 Height (m) Direction Period (s) | S 5 | S 5 | SSE 10 | SSE 10 | SSE 14 | SSE 12 | ESE 13 | ESE 13 | ESE 13 | ESE 12 | ESE 12 | ESE 12 | ESE 11 | SE 5 | ESE 11 | ESE 11 | ESE 10 | ESE 11 | ESE 12 |
10 | 12 | 105 | 140 | 226 | 161 | 514 | 357 | 317 | 230 | 161 | 158 | 113 | 27 | 70 | 45 | 42 | 22 | 14 | |
Swell 3 Height (m) Direction Period (s) | SW 10 | S 15 | S 15 | S 15 | S 20 | S 24 | — | — | SSE 6 | — | — | S 20 | — | ESE 11 | — | — | NE 4 | NE 4 | ESE 10 |
4 | 19 | 39 | 113 | 8 | 428 | — | — | 12 | — | — | 268 | — | 70 | — | — | 2 | 1 | 9 | |
Wind waves Height (m) Direction Period (s) | SSW 5 | — | — | — | — | — | — | — | S 6 | — | — | — | SE 4 | — | — | NE 4 | N 3 | — | SW 3 |
22 | — | — | — | — | — | — | — | 25 | — | — | — | 28 | — | — | 4 | 2 | — | 2 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 3 | 0 | 0 | 0 | 0 | 38 | 0 | 1 | 36 | 0 | 0 | 36 | 3 | 36 | 0 | 0 | 0 | 36 | 1 |
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.










