Surf Forecasts:
Banks Peninsula - Raupo Bay surf forecast from 22 Aug 2026:
- Best quality surf: Monday 24 Aug, 12AM (local time) - 10ft (3.0m), 10s period, SSW swell with cross-offshore winds.
- Most powerful swell: Monday 24 Aug, 3AM (local time) - 10ft (3.0m), 13s period, SSW swell with 2,884 kJ wave energy.
- Next surfable swell (1★+): Sunday 23 Aug, 9PM (local time) - 1.5ft (0.4m), 16s period with SSW swell.
Best Forecast Surf Conditions for Banks Peninsula - Raupo Bay this week:
The surf forecast for Banks Peninsula - Raupo Bay over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Aug 23) at 9PM. The primary swell is predicted to be 0.4m and 16s period with a secondary swell of 0.4m and 7s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Banks Peninsula - Raupo Bay in the next 16 days are 3.0m 13s and forecast to arrive on Monday (Aug 24) at 3AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.2m 6s period and expected on Sunday (Aug 23) at 6AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Sun 23rd Aug) | 1.5ft (0.4m) 16s |
| Best Surf | 12AM (Mon 24th Aug) | 10ft (3.0m) 10s |
| Most Powerful | 3AM (Mon 24th Aug) | 10ft (3.0m) 13s |
Table - best surf conditions forecast for Banks Peninsula - Raupo Bay over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what’s cookin' for Banks Peninsula’s Raupo Bay over the next couple of weeks.
Right off the bat, we’ve got a bit of a rough start. The first few days are looking pretty ordinary, with fresh cross-shore winds and lumpy, choppy conditions. Nothing to get excited about for Saturday or Sunday, that’s for sure. The real action starts to build later in the week.
The standout period is shaping up around Monday the 24th of August. We’ve got a solid 8ft swell rolling in from the SSW, with a very long period of 14 seconds. That’s a proper groundswell, and the combined wave energy is strong (2065). The wind is a light cross-shore, which is fine, but the real treat is the morning session. It’s a bit marginal for tide, but for a beginner-friendly spot like Raupo Bay, this is about as good as it gets.
Then, we get a beauty of a window on Wednesday the 26th of August. The morning is looking glassy with a light northerly breeze and a 4ft SSW groundswell with a 14-second period. The wave energy is moderate (699), and the water temperature is sitting around 50°F, which is about average for this time of year. The banks will be holding that clean, lined-up swell, and it’s going to be a quiet session. This is your best bet for clean, fun waves.
After that, we get a few more promising windows. Friday the 28th of August morning has a clean 5ft S swell with a 12-second period, and offshore winds. Then, Saturday the 29th of August morning sees a 3ft S swell with offshore winds, clean and fun. The next week, Monday the 31st of August morning is another standout with a clean 6ft SSW swell and a 10-second period, and light winds. That’s a solid offering.
Looking further out, Wednesday the 2nd of September morning has a clean 5ft SSW groundswell with a 15-second period. This is a very long period swell, which will be best at the point and reef setups, but Raupo Bay can handle it. The energy is moderate (823).
Keep in mind, the last week of the forecast gets a bit windier and more onshore, so the windows of clean surf are tighter. The big 10ft swell on the 5th of September is for experts only, and with onshore winds, it’s a kite day more than a paddle day.
Stay tuned, the glassy mornings are the ones to circle.
Rusty.
Short Range ForecastMostly dry. Very mild (max 17°C on Tue morning, min 6°C on Sun night). Winds decreasing (strong winds from the NNW on Sat night, light winds from the NW by Sun night). | Days 5-7 Weather SummaryMostly dry. Very mild (max 17°C on Tue afternoon, min 8°C on Tue night). Winds increasing (calm on Wed morning, fresh winds from the N by Thu afternoon). | |||||||||||||||||||
Sat 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | ||||||||||||||
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) | NNW 5 | N 5 | NNW 5 | NNE 8 | SSW 10 | SSW 14 | SSW 13 | SSW 11 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 13 | SSW 15 | S 16 | S 16 | S 15 | S 12 | S 12 | S 11 |
Wave Graph  | ||||||||||||||||||||
 kJ | 168 | 166 | 165 | 106 | 1816 | 2019 | 1202 | 478 | 754 | 462 | 744 | 660 | 604 | 1265 | 1257 | 1289 | 997 | 593 | 538 | 335 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross | cross-off | cross-off | cross | cross-on | cross | cross | off | glassy | glassy | cross-on | cross-off | cross-on | cross-on | cross-off | cross-off | on | glassy |
High Tide | 00:41AM1.66m | 1:09PM1.78m | 1:27AM1.67m | 1:53PM1.81m | 2:10AM1.70m | 2:35PM1.83m | 2:51AM1.72m | 3:16PM1.86m | 3:32AM1.75m | 3:56PM1.88m | 4:13AM1.77m | 4:36PM1.89m | ||||||||
Low Tide | 6:28PM0.51m | 6:42AM0.46m | 7:15PM0.50m | 7:27AM0.44m | 8:01PM0.47m | 8:11AM0.40m | 8:44PM0.44m | 8:54AM0.36m | 9:26PM0.39m | 9:37AM0.32m | 10:08PM0.35m | 10:20AM0.29m | 10:50PM0.32m | |||||||
 |  |  | |  | | | | | | | |  | | | | | | |  | |
 | — | — | 7:11 | — | — | 7:09 | — | — | 7:07 | — | — | 7:05 | — | — | 7:03 | — | — | 7:01 | — | — |
 | 5:49 | — | — | 5:50 | — | — | 5:51 | — | — | 5:52 | — | — | 5:53 | — | — | 5:54 | — | — | 5:55 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 13 | 12 | 12 | 9 | 13 | 15 | 12 | 17 | 17 | 10 | 13 | 12 | 10 | 12 | 16 | 14 | 12 | 10 | 11 |
Feels °C | 5 | 7 | 3 | 4 | 4 | 9 | 11 | 7 | 12 | 15 | 7 | 11 | 10 | 8 | 8 | 10 | 11 | 11 | 8 | 10 |
Swell 1 Height (m) Direction Period (s) | S 10 | S 10 | NNE 6 | NNE 8 | ESE 14 | SSW 14 | SSW 13 | SSW 11 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 13 | SSW 15 | S 16 | S 16 | S 15 | S 12 | S 12 | S 11 |
| kJ | 125 | 48 | 71 | 106 | 36 | 2019 | 1202 | 478 | 754 | 462 | 744 | 660 | 604 | 1265 | 1257 | 1289 | 997 | 593 | 538 | 335 |
Swell 2 Height (m) Direction Period (s) | E 14 | ESE 14 | NE 9 | ESE 14 | N 6 | ESE 13 | ESE 14 | SSW 15 | ESE 14 | S 8 | N 5 | ESE 13 | ESE 13 | N 4 | ESE 12 | ESE 11 | SE 12 | NNE 5 | NNE 8 | SSE 13 |
| kJ | 4 | 18 | 68 | 36 | 6 | 35 | 39 | 243 | 18 | 51 | 4 | 34 | 17 | 25 | 15 | 13 | 5 | 28 | 40 | 18 |
Swell 3 Height (m) Direction Period (s) | E 10 | S 16 | S 9 | SSW 17 | NE 7 | NE 8 | NE 7 | ESE 14 | — | ESE 13 | ESE 13 | NE 11 | SE 11 | ESE 13 | ESE 12 | ESE 12 | SE 6 | NE 8 | SE 15 | ESE 14 |
| kJ | 2 | 5 | 15 | 29 | 2 | 3 | 2 | 40 | — | 18 | 18 | 5 | 5 | 16 | 15 | 13 | 2 | 29 | 8 | 18 |
Wind waves Height (m) Direction Period (s) | NNW 5 | N 5 | NNW 5 | WSW 5 | SSW 10 | N 4 | N 4 | N 5 | NNW 5 | NNW 5 | — | — | — | N 5 | N 5 | N 6 | N 6 | — | — | NE 6 |
| kJ | 168 | 166 | 165 | 63 | 1816 | 8 | 8 | 108 | 143 | 60 | — | — | — | 34 | 69 | 230 | 200 | — | — | 15 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 133 | 133 | 267 | 161 | 0 | 18 | 16 | 18 | 133 | 0 | 0 | 0 | 16 | 0 | 30 | 30 | 0 | 0 | 16 | 0 |
Best forecast wave conditions in Canterbury | ||||||||||||||||||||
Best forecast wave conditions in New Zealand | ||||||||||||||||||||
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Information about the Banks Peninsula - Raupo Bay Surf forecast
The above surf forecast table for Banks Peninsula - Raupo Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Banks Peninsula - Raupo Bay can be found by selecting the local surf guide option on the grey menu. Our Banks Peninsula - Raupo 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 (Banks Peninsula - Raupo 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 Banks Peninsula - Raupo 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.
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