Surf Forecasts:
Castlepoint - The Gap surf forecast from 10 Aug 2026:
- Best quality surf: Tuesday 11 Aug, 9AM (local time) - 6ft (1.9m), 8s period, SSW swell with cross-offshore winds.
- Most powerful swell: Saturday 15 Aug, 3PM (local time) - 10ft (3.0m), 9s period, E swell with 1,288 kJ wave energy.
- Next surfable swell (1★+): Tuesday 11 Aug, 9AM (local time) - 6ft (1.9m), 8s 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 Tuesday (Aug 11) at 9AM. The primary swell is predicted to be 1.9m and 8s period with a secondary swell of 1.7m and 8s. Another secondary swell of 0.9m and 11s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Castlepoint - The Gap in the next 16 days are 3.0m 9s and forecast to arrive on Saturday (Aug 15) at 3PM. 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 4s period and expected on Monday (Aug 10) at 6PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Tue 11th Aug) | 6ft (1.9m) 8s |
| Best Surf | 9AM (Tue 11th Aug) | 6ft (1.9m) 8s |
| Most Powerful | 3PM (Sat 15th Aug) | 10ft (3.0m) 9s |
Table - best surf conditions forecast for Castlepoint - The Gap over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get stuck into this one.
First up, we’ve got a bit of a mixed bag for Castlepoint - The Gap. The water temp is sitting at 53°F, which is a bit colder than normal for this time of year, so factor that in.
Monday morning (the 10th) kicks things off with clean 3ft waves out of the SSE, and a gentle offshore WNW breeze. It’s surfable but nothing to write home about, and the energy is weak (164). Not a standout, but it’s a start. By Monday afternoon the wind swings and it gets messy – forget it.
Tuesday the 11th morning brings a bit more hope. Swell jumps to 6ft from the SSW, with a WSW cross-off breeze keeping things clean. Wave energy is strong (1155), but the period is a short 8 seconds, so it’ll be a bit crumbly. It’s decent, but not the best. Afternoon goes cross and messy again.
From Wednesday the 12th through to the start of the following week, it’s pretty grim. Wind stays cross or onshore, swell direction is all over the place, and conditions are poor. We’ve got a long gap of nothing special.
The first real standout? That’s got to be Thursday the 20th morning. Clear skies, a light WNW offshore breeze, and a solid 7ft S groundswell with a 12-second period. Wave energy is strong (1169), and it’ll be clean. That’s the session to aim for – solid, clean, and lined up.
But the absolute best on offer is Friday the 21st morning. Glassy conditions – dead calm, NW breeze. Swell is 7ft from the S with a very long 17-second period. That’s serious groundswell energy (3463). This is a point break setup, so that long period will wrap in beautifully. This is for experienced surfers only though – it’s too big for beginners. This is the one.
The 22nd and 23rd drop off again, with smaller, weaker swell and less favourable wind. By the 25th, it’s back to poor, windy, and messy.
Rusty
Short Range ForecastMostly dry. Very mild (max 14°C on Mon morning, min 8°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 35mm), heaviest during Sat night. Very mild (max 13°C on Fri morning, min 10°C on Sat night). Mainly strong winds. | ||||||||||||||||||||
Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | |||||||||||||||
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) | SSE 10 | SSE 9 | SSW 8 | SSW 8 | S 9 | SE 8 | SE 7 | ENE 5 | ESE 10 | ESE 9 | ENE 6 | ENE 7 | E 7 | E 7 | E 8 | E 8 | E 9 | SE 8 | E 9 | E 9 | E 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 137 | 124 | 378 | 522 | 347 | 248 | 93 | 72 | 161 | 99 | 70 | 199 | 303 | 303 | 368 | 751 | 1288 | 475 | 498 | 481 | 492 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross | cross-off | cross-off | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross-on | on | on | cross-on | cross | cross | cross |
High Tide | 2:22PM1.51m | 2:56AM1.30m | 3:19PM1.51m | 3:56AM1.29m | 4:17PM1.50m | 4:54AM1.29m | 5:16PM1.47m | 5:52AM1.29m | 6:15PM1.43m | 6:49AM1.30m | 7:13PM1.39m | 7:45AM1.32m | 8:10PM1.35m | ||||||||
Low Tide | 8:39PM-0.03m | 9:00AM-0.05m | 9:37PM-0.03m | 10:00AM-0.07m | 10:39PM-0.01m | 11:01AM-0.09m | 11:43PM0.00m | 12:00PM-0.08m | 00:43AM0.02m | 12:59PM-0.06m | 1:39AM0.04m | 1:57PM-0.02m | 2:32AM0.06m | ||||||||
 |  |  |  | |  | | | | | | | | |  |  | |  | |  | | |
 | 7:11 | — | — | 7:09 | — | — | 7:09 | — | — | 7:07 | — | — | 7:07 | — | — | 7:05 | — | — | 7:03 | — | — |
 | — | 5:29 | — | — | 5:30 | — | — | 5:30 | — | — | 5:31 | — | — | 5:32 | — | — | 5:34 | — | — | 5:35 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 6 | 7 | 21 | 8 | 4 | 2 |
Temp °C | 14 | 12 | 9 | 11 | 11 | 11 | 11 | 12 | 10 | 12 | 12 | 11 | 13 | 13 | 12 | 12 | 12 | 13 | 10 | 7 | 8 |
Feels °C | 10 | 8 | 5 | 8 | 8 | 9 | 7 | 7 | 6 | 9 | 8 | 8 | 8 | 9 | 8 | 8 | 9 | 11 | 2 | -4 | -3 |
Swell 1 Height (m) Direction Period (s) | SSE 10 | SSE 9 | SSW 8 | S 8 | S 9 | SE 8 | SE 7 | SE 7 | ESE 10 | ESE 9 | ESE 8 | ESE 7 | SE 9 | ESE 14 | E 8 | ESE 13 | SSW 20 | ENE 9 | E 9 | E 9 | E 10 |
| kJ | 137 | 124 | 202 | 392 | 347 | 248 | 93 | 69 | 161 | 99 | 59 | 48 | 22 | 20 | 368 | 17 | 140 | 249 | 498 | 481 | 492 |
Swell 2 Height (m) Direction Period (s) | NE 7 | SE 12 | SE 12 | SSE 11 | S 16 | SSE 11 | SE 10 | SSE 10 | S 10 | SSE 9 | SSE 9 | SE 8 | SSW 16 | SSW 15 | ESE 14 | SSW 18 | E 13 | SSW 18 | SSW 17 | SSW 16 | SSW 15 |
| kJ | 15 | 75 | 212 | 223 | 19 | 47 | 25 | 41 | 70 | 32 | 31 | 35 | 24 | 22 | 19 | 30 | 3 | 246 | 160 | 208 | 179 |
Swell 3 Height (m) Direction Period (s) | E 12 | NE 6 | SSE 9 | SSW 14 | SW 13 | SW 12 | S 11 | S 10 | S 20 | S 9 | S 17 | SSW 16 | ESE 15 | SSE 9 | SSW 15 | SW 14 | — | — | SSW 20 | SE 16 | SE 16 |
| kJ | 12 | 6 | 50 | 18 | 7 | 6 | 22 | 32 | 7 | 6 | 23 | 26 | 21 | 8 | 22 | 8 | — | — | 78 | 11 | 10 |
Wind waves Height (m) Direction Period (s) | WNW 3 | SSW 2 | SSW 8 | SSW 8 | — | NE 7 | ENE 5 | ENE 5 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | E 7 | E 7 | — | E 8 | E 9 | SE 8 | S 6 | S 6 | S 6 |
| kJ | 1 | 1 | 378 | 522 | — | 2 | 46 | 72 | 57 | 61 | 70 | 199 | 303 | 303 | — | 751 | 1288 | 475 | 89 | 104 | 267 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 66 | 74 | 0 | 1 | 55 | 28 | 106 | 28 | 28 | 88 | 28 | 88 | 99 | 88 | 99 | 235 | 249 | 169 | 310 | 296 |
Best forecast wave conditions in The Wairarapa | |||||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||||
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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.
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