Surf Forecasts:
Castlepoint - The Gap surf forecast from 22 Aug 2026:
- Best quality surf: Monday 24 Aug, 12PM (local time) - 8ft (2.4m), 14s period, SSW swell with offshore winds.
- Most powerful swell: Monday 24 Aug, 12PM (local time) - 8ft (2.4m), 14s period, SSW swell with 2,019 kJ wave energy.
- Next surfable swell (1★+): Monday 24 Aug, 3AM (local time) - 2.5ft (0.8m), 9s period with SSW swell.
Best Forecast Surf Conditions for Castlepoint - The Gap this week:
The surf forecast for Castlepoint - The Gap over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 24) at 3AM. The primary swell is predicted to be 0.8m and 9s period with a secondary swell of 0.3m and 13s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Castlepoint - The Gap in the next 16 days are 2.4m 14s and forecast to arrive on Monday (Aug 24) at 12PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 4s period and expected on Sunday (Aug 23) at 6PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Mon 24th Aug) | 2.5ft (0.8m) 9s |
| Best Surf | 12PM (Mon 24th Aug) | 8ft (2.4m) 14s |
| Most Powerful | 12PM (Mon 24th Aug) | 8ft (2.4m) 14s |
Table - best surf conditions forecast for Castlepoint - The Gap over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s coming down the line for our local patch.
The first notable surf appears on Monday the 24th of August. Before that, Sunday the 23rd is a total write-off with a near-gale howling offshore, making it nearly impossible to paddle into the tiny, poor quality waves. We’ve got a solid few days of action coming up, but there’s a bit of a lull later on.
The highlight of the whole run is going to be Monday the 24th of August at Castlepoint - The Gap. Monday morning kicks off with a clean 6ft swell from the SSW, and a gorgeous moderate offshore breeze from the WNW. The wave energy is seriously pumping – strong with a reading of 1261 and it only gets better in the afternoon. By then, the swell builds to 8ft from the same direction, the wind stays moderate and clean offshore, and the energy jumps to a very strong 1935. This is a sheltered spot, so that strong SSW groundswell with a 14-second period will wrap in nicely, offering some really well-shaped, powerful waves. It’s not one for the beginners at that size, but for the experienced crew, this is the pick of the week.
Tuesday the 25th is still good, but a step down. The morning sees a clean 4ft SSW swell with a gentle offshore breeze (moderate energy at 495). The period drops a touch, but it’s still a nice, long-period groundswell that will hold its shape. The afternoon gets smaller and a bit windier, so make the most of the morning.
We get a bit of a mixed bag after that. Wednesday the 26th is surfable but very ordinary, with clean but fading 3ft swell. Thursday the 27th has a bit more size at 5ft, and a very long 17-second period in the afternoon, but the wind is fresh and the conditions are only marginal. Friday the 28th turns sloppy with a cross-off shore wind ruining the 4ft swell.
The next real standout is on Monday the 31st of August. The afternoon session is the one to aim for. The swell is a solid 7ft from the SSW, with a 12-second period generating very strong energy (1102). The wind is a whisper-light cross-off, leaving the surface clean. That’s a serious session if you can get on it.
Then we get a big, powerful spell for the experts. Tuesday the 1st of September is a big day. The morning has a clean 8ft S swell with a very long 16-second period (very strong energy at 3891), but a fresh offshore breeze. The afternoon is the absolute peak for experienced surfers: a clean 8ft S swell, 15-second period, and a moderate offshore breeze. The energy is a massive 3297. This is a serious, powerful, long-period groundswell. At this size, it’s experts only. The point break setup at The Gap should handle it beautifully, but the period is so long the sets will be big and widely spaced.
After Tuesday the 1st, the wind turns nasty again on Wednesday the 2nd (near gale), and the surf drops right off. We get a brief window on Thursday the 3rd with a clean 3ft swell, but the period is a massive 21 seconds, which can make for a weird, straight wave at the beach. The real gem in the second week is Sunday the 6th of September. The morning and afternoon both offer a clean 6ft to 7ft SSW swell with a gentle offshore breeze. The energy is strong (1059-1221) and periods are a nice 12-13 seconds. That’s a fantastic, clean, powerful day for anyone with a bit of experience.
The water temperature is about average for this time of year, so nothing unusual to report there.
So, to sum it up: Monday the 24th of August is the undoubted standout for the quality of the surf and the clean conditions. For the biggest, most powerful waves for the experienced crew, circle Tuesday the 1st of September. Sunday the 6th of September is a solid, promising option in the second week, but always a bit less certain that far out.
Stay safe and I’ll see you in the water.
Rusty
Short Range ForecastLight rain (total 2mm), mostly falling on Sun morning. Very mild (max 15°C on Sun morning, min 9°C on Sun night). Winds decreasing (near gales from the WNW on Sun morning, light winds from the WNW by Tue morning). | Days 5-7 Weather SummaryMostly dry. Very mild (max 16°C on Thu afternoon, min 12°C on Tue night). Mainly fresh winds. | ||||||||||||||||||
Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | ||||||||||||||
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) | S 11 | S 10 | ESE 13 | ESE 13 | SSW 14 | SSW 14 | SSW 13 | SSW 12 | S 11 | SSW 15 | SSW 15 | SSW 15 | SSW 16 | SSW 15 | SSW 17 | S 16 | S 14 | S 13 | S 12 |
Wave Graph | |||||||||||||||||||
141 | 50 | 34 | 32 | 1224 | 1901 | 811 | 478 | 246 | 296 | 326 | 387 | 739 | 953 | 1189 | 1234 | 684 | 498 | 359 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | cross-off | cross-off | cross-off | cross-off |
High Tide | 00:54AM1.18m | 1:20PM1.26m | 1:39AM1.14m | 2:01PM1.24m | 2:24AM1.10m | 2:42PM1.22m | 3:09AM1.08m | 3:24PM1.20m | 3:54AM1.07m | 4:09PM1.18m | 4:41AM1.07m | 4:57PM1.18m | |||||||
Low Tide | 7:03AM0.24m | 7:40PM0.21m | 7:42AM0.24m | 8:20PM0.21m | 8:22AM0.24m | 9:01PM0.22m | 9:06AM0.23m | 9:45PM0.23m | 9:53AM0.22m | 10:35PM0.24m | 10:43AM0.21m | 11:30PM0.24m | |||||||
— | 6:54 | — | — | 6:52 | — | — | 6:50 | — | — | 6:48 | — | — | 6:48 | — | — | 6:46 | — | — | |
— | — | 5:42 | — | — | 5:42 | — | — | 5:43 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | |
mm | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 15 | 13 | 11 | 14 | 15 | 13 | 15 | 15 | 12 | 15 | 15 | 14 | 15 | 16 | 14 | 14 | 16 | 15 |
Feels °C | 7 | 4 | 2 | 3 | 9 | 10 | 8 | 10 | 9 | 4 | 12 | 11 | 9 | 11 | 11 | 8 | 9 | 9 | 11 |
Swell 1 Height (m) Direction Period (s) | S 11 | S 10 | NE 7 | ESE 13 | SSW 14 | SSW 14 | SSW 13 | SSW 12 | S 11 | SSW 15 | SSW 15 | SSW 15 | SSW 16 | SSW 15 | SSW 17 | S 16 | S 14 | S 13 | S 12 |
141 | 50 | 16 | 32 | 1224 | 1901 | 811 | 478 | 233 | 296 | 326 | 387 | 739 | 953 | 1189 | 1234 | 684 | 498 | 359 | |
Swell 2 Height (m) Direction Period (s) | ESE 13 | ESE 13 | ESE 13 | SSW 9 | ESE 13 | ESE 13 | ESE 14 | ESE 13 | SSW 15 | S 9 | S 8 | ESE 13 | ESE 12 | ESE 11 | ESE 11 | ESE 12 | NE 4 | NE 6 | NE 6 |
34 | 33 | 34 | 16 | 32 | 34 | 36 | 17 | 246 | 81 | 23 | 17 | 15 | 13 | 13 | 14 | 7 | 18 | 10 | |
Swell 3 Height (m) Direction Period (s) | SW 13 | S 19 | SSE 9 | NE 7 | NNE 7 | — | — | — | ESE 13 | ESE 12 | ESE 13 | E 10 | E 10 | ESE 11 | W 7 | E 16 | SE 12 | ESE 15 | ESE 14 |
6 | 7 | 9 | 2 | 5 | — | — | — | 17 | 14 | 17 | 2 | 2 | 12 | 4 | 5 | 5 | 21 | 18 | |
Wind waves Height (m) Direction Period (s) | NW 3 | NW 3 | W 4 | WSW 4 | — | NW 3 | NW 3 | NW 3 | WNW 3 | WNW 3 | NW 4 | NW 3 | NW 3 | W 4 | WNW 3 | NW 3 | NNW 3 | NW 3 | NW 4 |
3 | 6 | 27 | 38 | — | 4 | 1 | 4 | 9 | 7 | 8 | 4 | 2 | 4 | 2 | 2 | 4 | 6 | 15 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 55 | 192 | 143 | 88 | 0 | 0 | 0 | 0 | 16 | 16 | 0 | 0 | 74 | 16 | 16 | 28 | 28 | 74 | 28 |
Best forecast wave conditions in The Wairarapa | |||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||
Header Global | |||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
Information about the Castlepoint - The Gap Surf forecast
The above surf forecast table for Castlepoint - The Gap provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Castlepoint - The Gap can be found by selecting the local surf guide option on the grey menu. Our Castlepoint - The Gap 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 (Castlepoint - The Gap) 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 Castlepoint - The Gap 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 The Wairarapa? If you are looking for accommodation near Castlepoint - The Gap, camping, hotels and holiday cottages in The Wairarapa, consider staying in Masterton which is 48 km (30 miles) away. Other places in and around The Wairarapa where you can find information about places to rent, and car hire include Palmerston North which is 80 km (50 miles) away and Levin, 86 km (53 miles) away.











