Surf Forecasts:
Castlepoint - The Gap surf forecast from 21 Jul 2026:
- Best quality surf: Monday 27 Jul, 9PM (local time) - 13ft (4.0m), 11s period, SSE swell with offshore winds.
- Most powerful swell: Monday 27 Jul, 9PM (local time) - 13ft (4.0m), 11s period, SSE swell with 4,309 kJ wave energy.
- Next surfable swell (1★+): Wednesday 22 Jul, 12AM (local time) - 4.5ft (1.4m), 13s 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 (Jul 22) at 12AM. The primary swell is predicted to be 1.4m and 13s period with a secondary swell of 0.4m and 11s. 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 4.0m 11s and forecast to arrive on Monday (Jul 27) at 9PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 5s period and expected on Saturday (Jul 25) at 12PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Wed 22nd Jul) | 4.5ft (1.4m) 13s |
| Best Surf | 9PM (Mon 27th Jul) | 13ft (4.0m) 11s |
| Most Powerful | 9PM (Mon 27th Jul) | 13ft (4.0m) 11s |
Table - best surf conditions forecast for Castlepoint - The Gap over the next 16 days.
The Lowdown
Alright mates, Rusty here. Let’s break down what’s cooking at Castlepoint – The Gap.
The first real action doesn’t fire up until Tuesday the 21st. The water temp is about 55°F, right on the money for this time of year.
So, Tuesday afternoon the 21st is the first clear winner. We’re looking at a 6-foot south swell with a 14-second interval – that’s real groundswell energy, cranking at 1277. The wind is a light NNW breeze, keeping the faces clean and cross-off. This is a solid session to get on.
The rest of that week and the weekend are pretty flat and windy. Saturday the 25th has some rain and 30 km/h winds kicking up the mess. It’s a write-off until Sunday the 26th morning, which shows a 6-foot south swell, but at only 8 seconds, it’s going to be a lumpy mess.
Now, the second week is where the big stuff comes in. Monday the 27th jumps to 12 to 13 feet of south swell. Only for the brave. The energy is huge (4772). The wind is cross-off, so it’s clean, but that size is not for the faint of heart.
The absolute standout for the experienced crew is Tuesday the 28th. A 10-foot ESE swell with a massive 14-second period. The energy is pumping at 4928. The wind is a clean offshore from the WNW. This is a proper, heavy session. The Gap can handle it, but with that long period, the sets will be big and powerful.
Through the end of July and into August, we get a bit of a breather with 4 to 6-foot swells and clean offshore winds. The morning of Friday the 31st has a 6-foot SE swell, 13-second period, and a light offshore. That’s a great, clean weekend option.
But then Monday the 3rd of August goes nuclear. The morning has a 13-foot SSW swell with light cross-off wind. The energy is 5642. This is for experts only. The afternoon gets even bigger to 15 feet, but the wind goes onshore. Tuesday the 4th is still pumping at 15 feet with clean offshore wind. It’s a massive run of big, clean swell.
So, your best bet for a fun, clean day without the epic size is Tuesday the 21st. For the hard chargers, the morning of Tuesday the 28th is the one to circle, with the morning of Monday the 3rd of August being the next big one.
Rusty.
Short Range ForecastMostly dry. Very mild (max 14°C on Fri morning, min 7°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 6mm), mostly falling on Fri night. Very mild (max 15°C on Fri afternoon, min 4°C on Sun night). Mainly fresh winds. | |||||||||||||||||||
Tue 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | ||||||||||||||
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 14 | S 13 | SSW 12 | S 12 | SSW 12 | SSW 12 | SSW 11 | S 10 | S 9 | NE 6 | NE 6 | ENE 7 | SSW 6 | S 9 | S 8 | S 8 | S 8 | S 10 | S 10 | S 12 |
Wave Graph  | ||||||||||||||||||||
 kJ | 1207 | 633 | 248 | 344 | 123 | 83 | 50 | 17 | 15 | 20 | 233 | 70 | 205 | 593 | 466 | 453 | 779 | 1929 | 3337 | 3549 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-off | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | cross | cross-off | cross-off | off |
High Tide | 11:13PM1.33m | 11:36AM1.35m | 00:01AM1.29m | 12:26PM1.33m | 00:46AM1.26m | 1:14PM1.32m | 1:32AM1.22m | 1:59PM1.30m | 2:19AM1.18m | 2:41PM1.29m | 3:05AM1.14m | 3:22PM1.26m | ||||||||
Low Tide | 5:08PM0.07m | 5:30AM0.10m | 6:00PM0.13m | 6:15AM0.15m | 6:48PM0.18m | 6:58AM0.21m | 7:34PM0.22m | 7:39AM0.25m | 8:18PM0.25m | 8:21AM0.28m | 9:02PM0.27m | 9:04AM0.29m | 9:46PM0.28m | |||||||
 |  | |  |  | |  | | | |  |  |  | | | | | | | | |
 | — | — | 7:31 | — | — | 7:30 | — | — | 7:30 | — | — | 7:28 | — | — | 7:28 | — | — | 7:26 | — | — |
 | 5:10 | — | — | 5:10 | — | — | 5:12 | — | — | 5:13 | — | — | 5:14 | — | — | 5:15 | — | — | 5:15 | — |
mm | — | — | — | — | — | — | — | — | — | — | 4 | 1 | 1 | — | — | — | — | — | — | — |
Temp °C | 11 | 9 | 10 | 10 | 8 | 12 | 13 | 12 | 14 | 15 | 11 | 11 | 10 | 9 | 9 | 8 | 8 | 8 | 9 | 4 |
Feels °C | 7 | 5 | 8 | 8 | 6 | 7 | 9 | 7 | 9 | 11 | 8 | 6 | 4 | 2 | 3 | 1 | 0 | 2 | 3 | -1 |
Swell 1 Height (m) Direction Period (s) | S 14 | S 13 | SSW 12 | S 12 | SSW 12 | SSW 12 | SSW 11 | NE 4 | NE 6 | S 9 | NE 7 | ENE 7 | NE 8 | E 11 | E 12 | E 12 | ESE 13 | ESE 13 | ESE 14 | ESE 14 |
| kJ | 1207 | 633 | 248 | 344 | 123 | 83 | 50 | 5 | 8 | 6 | 100 | 70 | 67 | 151 | 175 | 233 | 555 | 1028 | 1435 | 2550 |
Swell 2 Height (m) Direction Period (s) | ESE 11 | ESE 11 | S 11 | ESE 11 | S 12 | SSE 11 | SSE 11 | S 10 | S 9 | ESE 12 | ESE 13 | ENE 12 | E 11 | SE 16 | SE 14 | SE 14 | SSW 12 | — | — | — |
| kJ | 70 | 47 | 112 | 22 | 73 | 40 | 22 | 17 | 15 | 13 | 16 | 50 | 125 | 196 | 214 | 194 | 30 | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | ESE 11 | E 14 | ESE 12 | ESE 12 | NE 4 | SSW 9 | ESE 11 | SW 8 | S 8 | SE 13 | SE 17 | SSW 16 | SSW 15 | SSW 14 | — | — | — | — |
| kJ | — | — | 22 | 4 | 26 | 13 | 2 | 8 | 12 | 3 | 6 | 27 | 104 | 25 | 22 | 41 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | NNW 3 | — | — | — | NNE 3 | — | NNW 3 | N 3 | NE 6 | NE 6 | SW 4 | SSW 6 | S 9 | S 8 | S 8 | S 8 | S 10 | S 10 | S 12 |
| kJ | — | 7 | — | — | — | 1 | — | 1 | 5 | 20 | 233 | 5 | 205 | 593 | 466 | 453 | 779 | 1929 | 3337 | 3549 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 99 | 0 | 4 | 28 | 143 | 66 | 157 | 4 | 66 | 137 | 1 | 0 | 99 | 102 | 76 | 1 | 0 |
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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