
Surf Forecasts:
Castlepoint - The Gap surf forecast from 4 Aug 2026:
- Best quality surf: Wednesday 5 Aug, 9AM (local time) - 15ft (4.5m), 12s period, S swell with cross-shore winds.
- Most powerful swell: Wednesday 5 Aug, 9AM (local time) - 15ft (4.5m), 12s period, S swell with 6,215 kJ wave energy.
- Next surfable swell (1★+): Wednesday 5 Aug, 9AM (local time) - 15ft (4.5m), 12s period with S 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 Wednesday (Aug 05) at 9AM. The primary swell is predicted to be 4.5m and 12s period with a secondary swell of 4.0m and 12s. The wind is predicted to be cross-shore as the swell arrives.
The most powerful waves expected at Castlepoint - The Gap in the next 16 days are 4.5m 12s and forecast to arrive on Wednesday (Aug 05) at 9AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Saturday (Aug 08) at 3AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Wed 5th Aug) | 15ft (4.5m) 12s |
| Best Surf | 9AM (Wed 5th Aug) | 15ft (4.5m) 12s |
| Most Powerful | 9AM (Wed 5th Aug) | 15ft (4.5m) 12s |
Table - best surf conditions forecast for Castlepoint - The Gap over the next 16 days.
The Lowdown
Alright, Rusty here, checkin’ in. Let’s get into it.
Alright, the next couple of weeks at Castlepoint - The Gap are a bit of a mixed bag, to be honest. We’ve got a real solid pulse of energy coming through, but the wind is gonna be the main character for a lot of it. The water temp is sitting at 54°, which is a touch cooler than usual for this time of year, so you’ll want a decent suit.
The first chance to get wet that’s worth talking about is Tuesday morning, August 4th. We’re looking at a solid 12 ft swell from the south, with a 13-second period. The combined energy is pumping at 3776 – that’s a lot of power. But, the wind is a cross-off from the southwest at 19 mph, which keeps it clean. The catch is, this spot is sheltered, so that size might be a bit much for the beginners, but for the experienced crew, it’s game on.
The real stand-out, the one you’ve gotta circle on the calendar, is Wednesday morning, August 5th. The swell is bumping up to 15 ft from the south-southwest, with a 12-second period. The energy is off the charts at 10510. The wind is a cross-shore from the southwest at 19 mph, and the forecast is calling it wind and tide favorable. This is big, powerful surf, and it’s really only for the experts. The crowd factor is "often" here, so expect a few chargers out if you’re one of them.
After that, things get a bit messy with the wind, but we get a nice little window on Friday morning, August 7th. The swell drops to a more manageable 4 ft from the south, but the period jumps to a very long 16 seconds. That’s a proper groundswell. Light wind from the northwest at 6 mph, with a cross-off texture, making it clean. The energy is still moderate at 1272. This is a great session for the experienced surfer who wants a long, clean ride.
Friday afternoon, August 7th is also a treat. The swell is 5 ft from the south, 14-second period, 1519 energy, and the wind goes offshore from the west-northwest at 9 mph. Glassy, clean, and lined up. That’s a beautiful afternoon session.
There’s a bit of a lull after that, with some smaller, wind-affected days. The next real window pops up over a week later, on Tuesday morning, August 18th. The swell comes back up to 7 ft from the south-southwest, 10-second period, 1442 energy, with a fresh offshore wind from the west at 6 mph. Clean conditions, and that’s a great size for a solid paddle.
Finally, for the big dogs, Wednesday morning, August 19th is looking like a serious highlight. We’ve got a 10 ft swell from the south, 11-second period, pumping 2455 energy. The wind is light from the west-southwest at 6 mph, making it clean. This is labelled as excellent for experienced surfers, and it is. The afternoon has a glassy 6 ft, but the wind goes cross-onshore, so that morning session is the one to chase.
So, to wrap it up: the clear standouts are Wednesday morning, August 5th for the big, heavy, expert-level power, and Friday morning, August 7th for a cleaner, longer-period groundswell. If you can handle the size, the 5th is the one. If you want a more refined, long-running wave, the 7th is your session.
Rusty.
Short Range ForecastLight rain (total 7mm), mostly falling on Tue morning. Mild temperatures (max 9°C on Thu afternoon, min 4°C on Thu night). Winds decreasing (strong winds from the SSW on Tue afternoon, light winds from the WSW by Thu night). | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Sat night. Very mild (max 13°C on Sat morning, min 5°C on Fri morning). Wind will be generally light. | ||||||||||||||||||||
Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | |||||||||||||||
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) | S 13 | SSW 12 | S 12 | S 12 | S 12 | SSW 12 | S 11 | SE 10 | SE 12 | S 16 | S 14 | S 13 | S 12 | S 11 | S 10 | S 10 | S 10 | S 12 | SSE 10 | SSE 10 | SSE 9 |
Wave Graph | |||||||||||||||||||||
3770 | 5507 | 5975 | 6215 | 4340 | 1688 | 1144 | 508 | 781 | 848 | 1026 | 822 | 617 | 403 | 314 | 245 | 240 | 330 | 218 | 250 | 242 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross | cross | cross | cross-off | cross-off | cross | off | cross-off | off | cross-off | off | cross-off | cross-off | off | cross | cross-off | cross-on | cross-on | on |
High Tide | 9:16AM1.21m | 9:44PM1.23m | 10:02AM1.27m | 10:32PM1.26m | 10:50AM1.34m | 11:20PM1.29m | 11:40AM1.40m | 00:09AM1.31m | 12:32PM1.45m | 1:01AM1.32m | 1:27PM1.48m | 1:57AM1.31m | 2:22PM1.51m | 2:56AM1.30m | |||||||
Low Tide | 3:30PM0.16m | 4:05AM0.16m | 4:22PM0.13m | 4:51AM0.13m | 5:13PM0.10m | 5:37AM0.09m | 6:03PM0.06m | 6:24AM0.05m | 6:54PM0.02m | 7:12AM0.01m | 7:45PM-0.01m | 8:04AM-0.02m | 8:39PM-0.03m | ||||||||
7:18 | — | — | 7:18 | — | — | 7:16 | — | — | 7:15 | — | — | 7:13 | — | — | 7:13 | — | — | 7:11 | — | — | |
— | 5:22 | — | — | 5:23 | — | — | 5:24 | — | — | 5:25 | — | — | 5:27 | — | — | 5:28 | — | — | 5:29 | — | |
mm | 3 | — | 4 | — | — | — | — | — | — | — | — | — | — | — | 1 | — | 1 | 1 | 2 | — | — |
Temp °C | 7 | 7 | 6 | 8 | 8 | 7 | 8 | 9 | 6 | 9 | 10 | 11 | 13 | 13 | 12 | 12 | 11 | 9 | 10 | 10 | 11 |
Feels °C | -4 | -5 | -4 | 1 | 1 | 2 | 4 | 5 | 3 | 5 | 6 | 6 | 8 | 9 | 7 | 10 | 7 | 5 | 6 | 6 | 6 |
Swell 1 Height (m) Direction Period (s) | NE 12 | NE 12 | NE 12 | S 12 | S 12 | SSE 10 | S 11 | SE 10 | SE 12 | S 16 | S 14 | S 13 | S 12 | S 11 | S 10 | S 10 | S 10 | S 12 | SSE 10 | SSE 10 | SSE 9 |
6 | 6 | 6 | 4295 | 3035 | 1050 | 1144 | 508 | 781 | 848 | 1026 | 822 | 617 | 403 | 314 | 245 | 240 | 330 | 218 | 250 | 242 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | S 12 | SE 15 | S 10 | S 10 | SSE 10 | S 10 | SE 11 | SE 12 | SE 11 | SSE 14 | SSE 13 | SSE 13 | SSW 13 | S 11 | E 12 | SE 12 |
— | — | — | — | — | 711 | 77 | 400 | 200 | 267 | 225 | 140 | 50 | 43 | 40 | 141 | 225 | 54 | 9 | 11 | 38 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | SE 16 | E 18 | SE 15 | S 14 | SSW 10 | SE 11 | E 14 | E 14 | SSE 15 | S 19 | S 17 | S 15 | E 12 | E 12 | SSW 15 | E 11 |
— | — | — | — | — | 67 | 6 | 56 | 32 | 157 | 268 | 4 | 4 | 42 | 7 | 52 | 72 | 11 | 11 | 23 | 10 | |
Wind waves Height (m) Direction Period (s) | S 13 | SSW 12 | S 12 | S 12 | S 12 | SSW 12 | — | — | — | — | — | NNW 3 | NW 3 | NW 3 | N 4 | NW 3 | — | SW 3 | — | — | NE 2 |
3770 | 5507 | 5975 | 6215 | 4340 | 1688 | — | — | — | — | — | 2 | 3 | 3 | 3 | 2 | — | 2 | — | — | 1 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 183 | 280 | 273 | 102 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 4 | 0 | 16 | 55 | 0 | 116 | 0 | 99 | 104 | 105 |
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.











