Castlepoint - The Gap Surf Break

Lat Long: 40.91° S 176.22° E

Castlepoint - The Gap Surf Forecast and Surf Report

Issued: 11 pm 05 Aug 2026 (local time)

Forecast update in  hr  min

Today's Castlepoint - The Gap sea temperature is
12.1° C
0.7° 

Castlepoint - The Gap surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Castlepoint - The Gap surf forecast from 5 Aug 2026:

  • Best quality surf: Friday 7 Aug, 12PM (local time) - 7ft (2.2m), 14s period, S swell with offshore winds.
  • Most powerful swell: Friday 7 Aug, 12PM (local time) - 7ft (2.2m), 14s period, S swell with 1,941 kJ wave energy.
  • Next surfable swell (1★+): Thursday 6 Aug, 9PM (local time) - 6ft (1.9m), 12s period with SE 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 Thursday (Aug 06) at 9PM. The primary swell is predicted to be 1.9m and 12s period with a secondary swell of 1.2m and 10s. 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 2.2m 14s and forecast to arrive on Friday (Aug 07) at 12PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Saturday (Aug 08) at 12AM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Thu 6th Aug)6ft (1.9m) 12s
Best Surf12PM (Fri 7th Aug)7ft (2.2m) 14s
Most Powerful12PM (Fri 7th Aug)7ft (2.2m) 14s

Table - best surf conditions forecast for Castlepoint - The Gap over the next 16 days.


The Lowdown

Alright, Rusty here, let's get into it. We're looking at Castlepoint - The Gap for the next couple of weeks. It's a sheltered little spot that needs the right angle, and it's a beginner-friendly wave when it's working. Water temp is about average for this time of year.

The overall pattern starts off pretty solid, then fades into a flat spell, before a big, messy pulse tries to finish things off. The first few days are the clear standout here.

Thursday, August 6th kicks things off with a solid 8ft SSW groundswell rolling in, but a WSW cross-off wind is keeping it a bit on the edge. The combined swell energy is pumping at 2474, so there's plenty of power, but it's described as marginal. Afternoon cleans up but drops in size. Not the pick.

Friday, August 7th is where you want to be. The morning has a clean 6ft S swell, a 15-second period (long period groundswell), and a light NW offshore wind. That's a recipe for smooth, clean lines at this break. The energy is still strong at 1996. The afternoon keeps the quality going with a 7ft S swell and offshore wind. This is the best on offer for the whole run.

Saturday, August 8th holds in there. Morning is a bit smaller at 6ft with a cross-off, but the afternoon is a solid 5ft S swell with a NW offshore wind (19 mph), keeping things clean. The energy drops to 618, but it's still a good session.

Sunday, August 9th sees the swell back off to 4ft. Clean but smaller. From here, the surf drops away.

We then hit a real dry spell. Monday, August 10th through Saturday, August 16th offers nothing but small, weak, or messy waves. Heights barely touch 3ft, and the energy is weak (between 147 and 352). The winds are all over the place, and it's just not worth paddling out. There's a moment of glassy conditions on the morning of Tuesday, August 11th, but with only 3ft on offer, it's barely surfable.

After a week of nothing, Sunday, August 17th brings a massive pulse, but it's ugly. We're looking at 12ft SSE swell with a short 8-second period, which is windswell. The energy is massive at 1753, but it's combined with 19 mph cross-off winds. It's big, bumpy, and too much for this sheltered spot. This is more for the experienced lads, and even then, the quality is poor. The next day, Monday, August 18th, sees the swell jump to 13ft, but with near gale-force winds (34 mph), it's a total write-off for paddle surfing.

There's a glimmer of hope at the very end. Thursday, August 20th brings a clean 6ft E swell with a light offshore wind and decent energy (1064). This is a promising, cleaner option, but it's 14 days out, so keep an eye on it.

So to wrap it up: Friday, August 7th is the standout. Get on it if you can. After that, you're looking at a week of nothing, then some wild, windy stuff before a possible return to form on the 20th.

- Rusty

Short Range Forecast

Mostly dry. Very mild (max 14°C on Sat afternoon, min 5°C on Thu night). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 7mm), mostly falling on Sun night. Very mild (max 15°C on Sun afternoon, min 7°C on Mon night). Wind will be generally light.

Thursday
6
Friday
7
Saturday
8
Sunday
9
Monday
10
Tuesday
11
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
4
3
1
3
3
3
3
1
2
2
2
1
1
1
0
2
1
1
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.5
SSW
12
2.3
SSW
11
1.8
SE
10
1.8
SE
11
1.7
S
15
2.1
S
14
1.7
S
12
1.7
S
12
1.5
S
11
1.4
SSE
10
1.2
SSE
10
1
S
10
0.8
SSE
10
0.9
SSE
10
0.8
SSE
9
1.1
S
9
0.8
SSE
11
0.8
SSE
11
1.2
SSE
8
Wave Graph
Metric surfscale
Energy kJ
1660
1186
685
828
1262
1647
871
792
543
443
300
200
128
137
118
188
163
149
207
Wind (km/h)
15
WSW
15
WSW
15
SSW
10
WNW
10
NW
10
WNW
15
NW
15
NW
15
NW
15
NNW
15
N
15
NNW
5
NNW
10
W
15
S
10
W
5
WSW
10
E
20
NE
Wind State
cross-off
cross-off
cross
off
off
off
off
cross-off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross-off
glassy
cross-on
cross
High Tide
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
3:19PM1.51m
Low Tide
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
9:00AM-0.05m
9:37PM-0.03m
part cloud
cloud
clear
clear
clear
cloud
cloud
part cloud
part cloud
part cloud
cloud
cloud
rain showers
part cloud
part cloud
part cloud
cloud
cloud
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:16
7:15
7:13
7:13
7:11
7:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:24
5:25
5:27
5:28
5:29
5:30
 mm
7
1
Temp °C
7
9
9
6
8
9
9
13
14
11
14
15
12
12
11
9
9
10
11
Feels °C
2
4
4
3
5
6
5
10
11
8
10
12
8
8
8
6
7
7
6
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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