Surf Forecasts:
Castlepoint - The Gap surf forecast from 21 Aug 2026:
- Best quality surf: Monday 24 Aug, 12PM (local time) - 8ft (2.5m), 13s period, SSW swell with cross-offshore winds.
- Most powerful swell: Wednesday 26 Aug, 9PM (local time) - 7.5ft (2.3m), 14s period, S swell with 2,216 kJ wave energy.
- Next surfable swell (1★+): Saturday 22 Aug, 3PM (local time) - 3.5ft (1.0m), 11s 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 (Aug 22) at 3PM. The primary swell is predicted to be 1.0m and 11s period with a secondary swell of 0.2m 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 2.3m 14s and forecast to arrive on Wednesday (Aug 26) at 9PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 9s period and expected on Monday (Aug 24) at 6AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Sat 22nd Aug) | 3.5ft (1.0m) 11s |
| Best Surf | 12PM (Mon 24th Aug) | 8ft (2.5m) 13s |
| Most Powerful | 9PM (Wed 26th Aug) | 7.5ft (2.3m) 14s |
Table - best surf conditions forecast for Castlepoint - The Gap over the next 16 days.
The Lowdown
G’day, Rusty here, checkin’ in from the coast. We’ve got a bit of a wait on our hands, but there’s some real magic brewing in the second half of the outlook. The first few days are a write-off, but hold tight.
The immediate picture is grim. Saturday the 22nd and Sunday the 23rd offer nothing but frustration. That 4ft south swell on Saturday morning is clean offshore, but the waves are just poor. The 2ft and 1ft stuff on Sunday is a complete non-starter. We’re looking at a gap of a couple of days with no real surf to speak of.
Then Monday the 24th dawns. Castlepoint - The Gap (New Zealand) finally wakes up with a solid 6ft SSW groundswell and a 1.5m period. The wind is a light offshore from the WNW, leaving it clean. The combined energy hits 1033 (moderate), and the conditions are expected to be very good. This is our first real look. The water temp is about average for this time of year.
Tuesday the 25th and Wednesday the 26th are a mixed bag. Tuesday holds 4ft to 4ft SSW swell with moderate offshore wind, still clean, but not as punchy. Wednesday gets messy, with a light onshore breeze ruining a 5ft SSW swell.
Now, Thursday the 27th is a standout. A 6ft S swell, period 14 seconds, rolls in with a moderate offshore from the NW. The energy is strong (1313) and the forecast is for very good surf. It’s a groundswell so look for it to line up nicely at this reefy spot.
The next major highlight is a big one, but it’s a week away. On Monday the 31st of August, the early morning session is a beauty. We’re looking at a 10ft SSW swell, period 9 seconds. The wind is glassy, dead calm with a light offshore from the NE. It’s big, over 8ft, so this is for experienced surfers only. The energy is very strong (2648). The afternoon goes a bit lumpy with a cross-onshore, but that morning window is as good as it gets.
Tuesday the 1st of September offers a nice drop back to 5ft S swell with a clean offshore wind. Good, solid surf.
Then we get a monster on Wednesday the 2nd of September. A 12ft S swell is predicted, but it’s blowing a strong offshore (45 km/h) which makes it nearly impossible to paddle into. The afternoon sees a 15ft SSW swell that’s simply too big for this break, even clean. This is strictly for the kamikaze crew or just a great day to watch. Thursday the 3rd hangs around 8ft SSW but with a strong cross-offshore wind, making it marginal.
The last week is a bit of a fade. Friday the 4th and Saturday the 5th are mostly blown out or messy. The standout on the 5th is a 10ft S swell in the afternoon with a fresh offshore wind, but it’s still marginal.
The absolute best on offer is that glassy 10ft session on Monday the 31st morning for the experts, and the clean, solid 6ft south groundswell on Thursday the 27th. The 6ft SSW on Monday the 24th is a solid runner-up.
Rusty.
Short Range ForecastSome drizzle, heaviest during Sun morning. Very mild (max 15°C on Sat afternoon, min 9°C on Fri night). Winds decreasing (near gales from the NW on Sun morning, light winds from the WNW by Mon morning). | Days 5-7 Weather SummaryLight rain (total 4mm), mostly falling on Thu afternoon. Very mild (max 16°C on Tue morning, min 10°C on Thu afternoon). Mainly strong winds. | ||||||||||||||||||
Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | ||||||||||||||
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 12 | S 11 | S 11 | S 11 | S 10 | ESE 13 | ESE 13 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 11 | SSW 15 | SSW 15 | SSW 15 | S 14 | S 14 | S 13 | S 16 |
Wave Graph | |||||||||||||||||||
480 | 305 | 233 | 141 | 50 | 34 | 32 | 995 | 1960 | 888 | 470 | 260 | 228 | 335 | 886 | 1781 | 1297 | 941 | 508 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | off | off | off | off | off | off | off | off | off | on | cross-on | off | off | cross-on | cross-on |
High Tide | 00:11AM1.22m | 12:37PM1.28m | 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 | |||||||
Low Tide | 6:24AM0.22m | 6:59PM0.20m | 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 | |||||||
— | 6:54 | — | — | 6:54 | — | — | 6:52 | — | — | 6:50 | — | — | 6:48 | — | — | 6:48 | — | — | |
— | — | 5:40 | — | — | 5:42 | — | — | 5:42 | — | — | 5:43 | — | — | 5:44 | — | — | 5:45 | — | |
mm | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 1 |
Temp °C | 10 | 13 | 15 | 14 | 14 | 13 | 11 | 14 | 14 | 13 | 16 | 16 | 14 | 12 | 11 | 13 | 15 | 12 | 11 |
Feels °C | 4 | 6 | 9 | 7 | 4 | 3 | 3 | 10 | 8 | 6 | 12 | 12 | 11 | 10 | 8 | 10 | 12 | 10 | 8 |
Swell 1 Height (m) Direction Period (s) | S 12 | S 11 | S 11 | S 11 | S 10 | NE 7 | SW 9 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 11 | SSW 15 | SSW 15 | SSW 15 | S 14 | S 14 | S 13 | S 12 |
480 | 305 | 233 | 141 | 50 | 16 | 83 | 995 | 1960 | 888 | 470 | 260 | 228 | 335 | 886 | 1781 | 1297 | 941 | 480 | |
Swell 2 Height (m) Direction Period (s) | ESE 10 | ESE 9 | E 14 | ESE 13 | ESE 13 | ESE 13 | ESE 13 | ESE 13 | ESE 13 | ESE 14 | ESE 13 | SSW 15 | S 9 | S 8 | SSE 6 | ESE 12 | ESE 13 | ESE 12 | S 16 |
18 | 8 | 16 | 34 | 33 | 34 | 32 | 32 | 34 | 36 | 17 | 179 | 61 | 23 | 50 | 13 | 16 | 13 | 508 | |
Swell 3 Height (m) Direction Period (s) | SE 12 | — | SE 12 | WSW 5 | NE 5 | SSE 10 | NE 7 | NNE 8 | — | — | S 16 | ESE 13 | S 19 | ESE 13 | ESE 13 | SE 13 | — | — | NE 5 |
6 | — | 5 | 2 | 1 | 18 | 7 | 6 | — | — | 20 | 16 | 64 | 17 | 17 | 7 | — | — | 19 | |
Wind waves Height (m) Direction Period (s) | NNW 2 | NNW 3 | NW 3 | NW 3 | NW 3 | W 4 | W 4 | — | — | NW 3 | NW 4 | W 4 | W 4 | SSE 4 | — | — | — | NE 4 | NNE 5 |
1 | 1 | 4 | 3 | 6 | 27 | 35 | — | — | 2 | 11 | 23 | 12 | 10 | — | — | — | 10 | 46 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 16 | 0 | 55 | 192 | 143 | 88 | 0 | 25 | 16 | 0 | 0 | 135 | 37 | 76 | 0 | 0 | 1 | 88 |
Best forecast wave conditions in The Wairarapa | |||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.











