Castlepoint - The Gap Surf Break

Lat Long: 40.91° S 176.22° E

Castlepoint - The Gap Surf Forecast and Surf Report

Issued: 5 pm 08 Aug 2026 (local time)

Forecast update in  hr  min

Today's Castlepoint - The Gap sea temperature is
11.7° C
1.1° 

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 8 Aug 2026:

  • Best quality surf: Sunday 9 Aug, 12AM (local time) - 4.5ft (1.4m), 11s period, S swell with cross-offshore winds.
  • Most powerful swell: Sunday 9 Aug, 12AM (local time) - 4.5ft (1.4m), 11s period, S swell with 441 kJ wave energy.
  • Next surfable swell (1★+): Sunday 9 Aug, 12AM (local time) - 4.5ft (1.4m), 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 Sunday (Aug 09) at 12AM. The primary swell is predicted to be 1.4m and 11s period with a secondary swell of 0.4m and 14s. 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 1.4m 11s and forecast to arrive on Sunday (Aug 09) at 12AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 5s period and expected on Monday (Aug 10) at 6PM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Sun 9th Aug)4.5ft (1.4m) 11s
Best Surf12AM (Sun 9th Aug)4.5ft (1.4m) 11s
Most Powerful12AM (Sun 9th Aug)4.5ft (1.4m) 11s

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


The Lowdown

Right, let's have a look at what's on the cards for The Gap at Castlepoint. This is a sheltered little nook that needs a specific window to fire, and the next couple of weeks are gonna test your patience if you're chasing something clean.

The water's sitting at 53°F, which is a bit colder than average for this time of year, so you'll want the thick rubber on.

The outlook opens on Saturday afternoon, the 8th. We've got some clouds and a glassy sea with a light 3 mph breeze out of the ENE. There's a 5ft south swell rolling in with an 11-second period, and the combined energy is moderate at 589. It's not huge, but it's clean and the conditions are looking friendly. This is a decent little window to get wet.

Sunday the 9th is a write-off. The wind swings around to the NNE at 12 mph and it's cross-chop city. The swell drops a touch, but the surf quality is just poor. Monday the 10th starts with a clean but very ordinary 3ft SSE swell, and any hope of a session is killed by rain showers and a cross-shore wind in the afternoon.

We get a brief glimpse of something better on Tuesday morning, the 11th. The south swell picks back up to 3ft with a longer 12-second period, and a gentle cross-offshore breeze from the SW keeps it clean. Combined energy is up to 664, which is a solid moderate push. That's worth a look.

Then we hit a long, frustrating stretch. From Tuesday afternoon through Saturday the 15th, it's a mess of cross-shore winds, lumpy chop, and short-period slop. The swell sticks around, but it's junky and the energy drops. Not worth the paddle.

Sunday the 16th sees the swell start to build again, hitting 6ft by the afternoon out of the south, but the wind is mostly cross or cross-off and it's lumpy. The energy is getting strong, but the quality isn't there.

Now, Monday the 17th is where things start to get interesting. The wind goes light offshore from the WNW at 6 mph, and the swell is a solid 6ft from the south with a 10-second period. The energy is back up to 589, and the conditions are clean. This is a proper surf window, and a standout for the run.

The middle of the week turns nasty. Tuesday the 18th and Wednesday the 19th bring strong southwesterly gales, 25-28 mph, with the swell blowing out to 10ft. The combined energy is enormous – 1215, then 2684, then a massive 3943 on Wednesday afternoon – but the cross-shore wind will turn it into a washing machine. This is not for a paddleboard; this is kite-surfing territory if anything.

Thursday the 20th and Friday the 21st keep the big, stormy south swell, around 8ft to 10ft, but the wind stays strong and cross. Friday morning has a long 15-second period and a cross-off breeze, which is promising for the points, but the sheer size and the wind will make it a heavy, expert-only affair. The energy readings are off the charts – 3766 on Friday morning.

After that big pulse, things finally settle. Saturday the 22nd and Sunday the 23rd see the swell back down to a clean 5ft to 6ft from the south, with light offshore or cross-off winds. The energy is moderate, and the conditions look glassy and clean. These are your best bets for a proper, fun surf without the drama.

So, the standout windows are Monday morning the 17th, and then the weekend of the 22nd and 23rd. The Tuesday morning session on the 11th is a smaller, cleaner option. The big stuff mid-week is just too messy.

Rusty out.

Short Range Forecast

Some drizzle, heaviest during Mon afternoon. Very mild (max 14°C on Sat afternoon, min 9°C on Mon night). Winds increasing (calm on Sat afternoon, fresh winds from the WNW by Sun night).

Days 5-7 Weather Summary

Light rain (total 4mm), mostly falling on Thu night. Very mild (max 14°C on Thu afternoon, min 9°C on Tue night). Mainly fresh winds.

Sat
8
Sunday
9
Monday
10
Tuesday
11
Wednesday
12
Thursday
13
Friday
14
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
2
0
1
1
1
0
1
2
1
0
0
0
0
0
0
0
0
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.5
S
11
1.4
S
11
1.2
S
10
0.8
S
13
1
S
10
0.9
SSE
10
0.9
SSE
9
1.6
SSW
7
1
SSE
12
1.4
SSE
11
1.4
SE
8
1
SE
7
1
SE
8
0.8
SE
8
1.4
NE
7
1.1
ENE
7
1.4
ENE
8
1.4
ENE
9
1.4
ENE
8
1.2
E
8
Wave Graph
Metric surfscale
Energy kJ
543
441
296
206
216
169
124
261
280
431
248
107
120
77
183
117
220
268
262
210
Wind (km/h)
5
ENE
10
N
20
NNE
20
NW
25
NW
15
WNW
20
SSW
20
WSW
15
SW
10
E
20
NE
20
NNE
30
NE
15
NNE
15
NNE
30
NE
25
NE
15
NNE
10
NNE
10
SW
Wind State
glassy
cross-off
cross
cross-off
off
off
cross
cross-off
cross-off
on
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross-off
High Tide
1:01AM1.32m
1:27PM1.48m
1:57AM1.31m
2:22PM1.51m
2:56AM1.30m
3:19PM1.51m
3:56AM1.29m
4:17PM1.50m
4:54AM1.29m
5:16PM1.47m
5:52AM1.29m
6:15PM1.43m
Low Tide
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
10:00AM-0.07m
10:39PM-0.01m
11:01AM-0.09m
11:43PM0.00m
12:00PM-0.08m
00:43AM0.02m
part cloud
cloud
cloud
part cloud
clear
part cloud
rain showers
part cloud
part cloud
cloud
cloud
part cloud
cloud
rain showers
part cloud
part cloud
light rain
cloud
light rain
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:13
7:11
7:09
7:09
7:07
7:07
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:27
5:28
5:29
5:30
5:30
5:31
5:32
 mm
1
1
3
1
1
Temp °C
14
11
14
14
12
13
11
10
11
11
10
12
12
11
12
14
13
13
14
12
Feels °C
12
8
8
10
7
8
7
5
9
8
6
7
6
8
7
9
9
11
12
9
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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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