Surf Forecasts:
Castlepoint - The Gap surf forecast from 18 Jul 2026:
- Best quality surf: Saturday 18 Jul, 6PM (local time) - 7ft (2.2m), 21s period, S swell with offshore winds.
- Most powerful swell: Monday 20 Jul, 6PM (local time) - 10ft (3.0m), 19s period, S swell with 5,437 kJ wave energy.
- Next surfable swell (1★+): Saturday 18 Jul, 6PM (local time) - 7ft (2.2m), 21s 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 Saturday (Jul 18) at 6PM. The primary swell is predicted to be 2.2m and 21s period with a secondary swell of 1.2m and 14s. 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 3.0m 19s and forecast to arrive on Monday (Jul 20) at 6PM. Winds are predicted to be cross-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 Sunday (Jul 19) at 12PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Sat 18th Jul) | 7ft (2.2m) 21s |
| Best Surf | 6PM (Sat 18th Jul) | 7ft (2.2m) 21s |
| Most Powerful | 6PM (Mon 20th Jul) | 10ft (3.0m) 19s |
Table - best surf conditions forecast for Castlepoint - The Gap over the next 16 days.
The Lowdown
Alright, let’s break this down, Castlepoint - The Gap.
First up, Saturday the 18th of July. Morning brings a clean 4ft swell out of the ESE with a moderate offshore wind from the WNW. Water’s about 55°F, right around average for this time of year. Solid energy (1235). Good for the beginners to start the weekend.
Saturday afternoon turns it up. Glassy south wind, swell jumps to 7ft from the south with a super long 23-second period. That’s massive groundswell energy (5243). Experts only – too big and powerful for beginners. Long waits, but serious shape when the sets roll in.
Sunday the 19th morning stays clean with a 6ft SSW swell, 17-second period, light offshore wind. High energy (2563). Good session. Afternoon goes downhill with onshore wind. Monday the 20th is messy – onshore wind, building 8ft swell, choppy. Not the good kind of big.
Tuesday the 21st morning cleans up briefly with a light offshore and 7ft south swell. Worth it, but fades by afternoon.
From Wednesday the 22nd through Sunday the 26th, it’s small and ugly. Swell under 3ft, messy winds, energy drops down. Not worth a paddle. A couple of days with 25 mph cross-shore winds and tiny swell might be better for kite surfing.
Monday the 27th of July sees a bump to 7ft SSW swell but with light onshore wind – bumpy. Afternoon improves but still not clean enough.
The clear winner lands on Tuesday the 28th of July afternoon. A clean 8ft SE swell with a 12-second period and a nice offshore breeze. Energy is strong (1590). Expert territory, but The Gap will be going off. Expect some company, though – crowds are listed as “often.”
Wednesday the 29th morning keeps the clean offshore wind with a 6ft SE swell. Good follow-up. After that, it fades into early August with dropping swell and building wind. The morning of Sunday the 2nd of August has a tiny clean 3ft SE swell – alright for a longboard, but nothing exciting.
Overall: the standout sessions are Saturday the 18th afternoon for the experienced surfers, and Tuesday the 28th afternoon for the real deal. Beginners aim for Saturday the 18th morning or Tuesday the 21st morning. There’s a rough stretch from the 22nd to the 26th with barely any surf.
Rusty.
Short Range ForecastMostly dry. Very mild (max 12°C on Sat morning, min 8°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 12°C on Tue afternoon, min 7°C on Tue morning). Wind will be generally light. | ||||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | |||||||||||||||
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) | ESE 14 | S 23 | S 19 | SSW 17 | SSW 16 | S 15 | S 14 | S 19 | S 17 | S 15 | S 14 | S 13 | SSW 12 | S 11 | SSW 13 | SSW 12 | SSW 12 | SSW 9 | ESE 11 | ESE 11 | NE 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 682 | 4617 | 3614 | 2212 | 1512 | 1611 | 1212 | 5279 | 3467 | 1907 | 1190 | 704 | 210 | 305 | 131 | 85 | 52 | 15 | 12 | 13 | 43 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | glassy | off | cross-off | cross | cross | cross | cross-on | glassy | cross-off | cross-off | cross-off | cross-off | cross-on | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 8:32PM1.44m | 9:03AM1.36m | 9:29PM1.40m | 9:55AM1.36m | 10:23PM1.36m | 10:46AM1.36m | 11:13PM1.33m | 11:36AM1.35m | 00:01AM1.29m | 12:26PM1.33m | 00:46AM1.26m | 1:14PM1.32m | 1:32AM1.22m | ||||||||
Low Tide | 2:17PM-0.08m | 2:59AM-0.02m | 3:16PM-0.04m | 3:52AM0.01m | 4:14PM0.01m | 4:42AM0.05m | 5:08PM0.07m | 5:30AM0.10m | 6:00PM0.13m | 6:15AM0.15m | 6:48PM0.18m | 6:58AM0.21m | 7:34PM0.22m | ||||||||
 |  |  | | |  |  | | | | |  | | | | | | |  | |  | |
 | 7:33 | — | — | 7:33 | — | — | 7:33 | — | — | 7:31 | — | — | 7:31 | — | — | 7:30 | — | — | 7:30 | — | — |
 | — | 5:07 | — | — | 5:08 | — | — | 5:09 | — | — | 5:10 | — | — | 5:10 | — | — | 5:12 | — | — | 5:13 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 5 | 9 |
Temp °C | 12 | 12 | 11 | 12 | 12 | 9 | 10 | 10 | 10 | 10 | 12 | 10 | 12 | 12 | 10 | 12 | 12 | 12 | 12 | 11 | 10 |
Feels °C | 10 | 11 | 7 | 7 | 7 | 5 | 7 | 6 | 7 | 6 | 8 | 6 | 10 | 10 | 8 | 7 | 7 | 7 | 8 | 9 | 8 |
Swell 1 Height (m) Direction Period (s) | ESE 14 | S 23 | S 19 | SSW 17 | SSW 16 | S 15 | S 14 | S 19 | S 17 | S 15 | S 14 | S 13 | SSW 12 | S 11 | S 10 | S 10 | SSW 12 | SSW 9 | SSE 10 | NE 5 | ENE 6 |
| kJ | 682 | 4617 | 3614 | 2212 | 1512 | 1611 | 1212 | 5279 | 3467 | 1907 | 1190 | 704 | 210 | 305 | 74 | 48 | 52 | 15 | 10 | 7 | 22 |
Swell 2 Height (m) Direction Period (s) | SSW 12 | ESE 14 | ESE 13 | ESE 13 | ESE 13 | ESE 12 | S 18 | ESE 12 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | SSE 11 | ESE 11 | SSW 13 | SSW 12 | SSE 9 | ESE 11 | ENE 5 | ESE 11 | SE 13 |
| kJ | 343 | 626 | 479 | 351 | 286 | 187 | 810 | 123 | 87 | 70 | 48 | 47 | 156 | 22 | 131 | 85 | 28 | 12 | 2 | 13 | 26 |
Swell 3 Height (m) Direction Period (s) | SSW 25 | — | — | — | — | — | ESE 12 | — | — | — | — | — | ESE 11 | — | ESE 12 | ESE 11 | ESE 11 | SSE 9 | ESE 11 | SSE 10 | S 9 |
| kJ | 210 | — | — | — | — | — | 127 | — | — | — | — | — | 23 | — | 26 | 25 | 12 | 8 | 12 | 9 | 6 |
Wind waves Height (m) Direction Period (s) | NW 4 | — | — | — | SSW 4 | — | — | — | — | — | — | NNE 4 | — | — | — | N 2 | N 2 | NNW 3 | NNW 3 | — | NE 6 |
| kJ | 11 | — | — | — | 13 | — | — | — | — | — | — | 5 | — | — | — | 1 | 1 | 2 | 3 | — | 43 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 99 | 1 | 1 | 1 | 0 | 0 | 0 | 16 | 0 | 1 | 0 | 0 | 25 | 28 | 135 | 99 | 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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