Castlepoint - The Gap Surf Break

Lat Long: 40.91° S 176.22° E

Castlepoint - The Gap Surf Forecast and Surf Report

Issued: 11 pm 06 Sep 2026 (local time)

Forecast update in  hr  min

Today's Castlepoint - The Gap sea temperature is
12.1°C
0.6° 

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 6 Sep 2026:

  • Best quality surf: Saturday 12 Sep, 3PM (local time) - 15ft (4.5m), 12s period, SSW swell with cross-shore winds.
  • Most powerful swell: Sunday 13 Sep, 12AM (local time) - 11ft (3.5m), 16s period, S swell with 6,714 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 9 Sep, 12AM (local time) - 5ft (1.6m), 8s period with E 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 (Sep 09) at 12AM. The primary swell is predicted to be 1.6m and 8s period with a secondary swell of 0.6m and 9s. 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 3.5m 16s and forecast to arrive on Sunday (Sep 13) 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 0.5m 3s period and expected on Thursday (Sep 10) at 12AM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Wed 9th Sep)5ft (1.6m) 8s
Best Surf 3PM (Sat 12th Sep)15ft (4.5m) 12s
Most Powerful12AM (Sun 13th Sep)11ft (3.5m) 16s

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


The Lowdown

Alright, let's look at what's happenin' at Castlepoint - The Gap. This spot is sheltered, so it needs a proper nudge to wake up. For a beginner wave, it can be a bit of a letdown, and we've got a good stretch of quiet to start.

First up, Monday the 7th and Tuesday the 8th are a total loss. Fresh cross-onshore winds and lumpy, poor surf with combined energy readings of 424 to 708 (moderate energy). Leave the stick in the car.

Wednesday the 9th morning, things get a bit more interestin'. The wind goes glassy, dead calm, with a 5ft swell from the ESE. The energy drops to 309 (weak), but that glassy surface is a big win – it'll be clean as a whistle, even if the waves are a bit ordinary. That's a window for a patient session.

Thursday the 10th gets a strong offshore, but the swell is tiny, only 2ft in the morning, droppin' to 1ft by the afternoon. It's clean but hard to paddle into.

Now, here's where it gets a bit special. From Friday the 11th through Saturday the 12th morning, we've got some proper conditions comin' together. On Friday morning, we get a clean, gentle offshore breeze from the west with a 6ft swell from the south (moderate energy of 524). By the afternoon, it's light offshore and clean with a 5ft swell. That's good, clean surf. Saturday morning looks even better – light offshore winds, 7ft of south swell (moderate energy of 769). This is the standout window. Clean waves for the more experienced, with a bit of size.

Saturday afternoon though, the swell jumps to a massive 15ft from the SSW with a long 12-second period, and the combined energy goes ballistic at 9706 (strong to very strong energy). That's way too big for this break, and only for experts if they're feelin' crazy. It's a pass from me.

Sunday the 13th stays big with a 10ft to 12ft south swell, but the winds turn cross-off and cross, makin' it messy and marginal.

Monday the 14th brings another good window. Moderate offshore from the WNW with a 8ft south swell (13-second period, very long period groundswell) and an energy of 1844 (strong). That's a solid, clean swell, but that long period might make it break a bit straight at the beach. Still, a good option for the crew who know the bank.

After that, the second week drops off. Tuesday the 15th has moderate offshore winds but the swell drops to 5ft, then smaller. From the 16th onwards it's mostly poor with tiny waves or strong winds. A couple of marginal days pop up around the 20th with clean but small 3ft to 4ft south swells, but the wind is fresh to strong offshore, which can be a battle to get out.

The best of the whole period is hands down Friday the 11th through Saturday the 12th morning. Clean, gentle offshore, solid 5ft to 7ft south swell, and it's the most consistent action we'll see. Get on it.

Rusty.

Short Range Forecast

Heavy rain (total 49mm), heaviest during Mon morning. Very mild (max 14°C on Sun night, min 6°C on Tue night). Winds decreasing (fresh winds from the SSW on Sun night, calm by Wed morning).

Days 5-7 Weather Summary

Moderate rain (total 17mm), heaviest on Thu night. Very mild (max 13°C on Thu morning, min 6°C on Fri night). Winds decreasing (strong winds from the WNW on Thu morning, calm by Sat afternoon).

Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
Saturday
12
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
0
0
0
0
0
2
1
0
0
0
1
0
2
2
0
2
!
5
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.3
SSW
17
1.9
S
7
2.1
SSE
7
1.6
SE
7
1.7
ESE
8
2
E
9
1.6
E
8
1.4
ESE
8
1.2
ESE
8
1
ESE
8
0.7
ESE
7
0.4
SSW
15
0.5
SSW
14
1.8
S
7
1.5
S
8
0.4
SSW
18
2.2
S
8
4.5
SSW
12
3.5
S
16
Wave Graph
Metric surfscale
Energy kJ
55
371
432
233
432
621
349
270
192
123
57
85
120
352
309
115
551
5502
6714
Wind (km/h)
20
WNW
30
SSE
30
SE
20
ESE
15
SSE
20
S
10
SW
5
WNW
15
NNE
30
NNW
40
WNW
20
NW
30
SSW
15
W
10
W
30
S
10
W
15
S
15
WSW
Wind State
off
cross-on
cross-on
on
cross-on
cross
cross-off
glassy
cross
cross-off
off
off
cross
off
off
cross-on
off
cross
cross-off
High Tide
00:45AM1.30m
1:11PM1.46m
1:41AM1.28m
2:07PM1.45m
2:39AM1.26m
3:03PM1.43m
3:37AM1.26m
4:01PM1.41m
4:34AM1.26m
4:58PM1.38m
5:30AM1.27m
5:54PM1.34m
Low Tide
6:56AM-0.05m
7:30PM-0.06m
7:48AM-0.07m
8:22PM-0.05m
8:45AM-0.07m
9:18PM-0.01m
9:44AM-0.06m
10:17PM0.03m
10:44AM-0.04m
11:19PM0.07m
11:43AM-0.01m
00:17AM0.11m
heavy rain
heavy rain
mod rain
light rain
cloud
part cloud
clear
clear
part cloud
clear
cloud
light rain
heavy rain
part cloud
clear
rain showers
rain showers
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:30
6:28
6:26
6:24
6:24
6:22
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:55
5:57
5:58
5:59
6:00
6:00
 mm
14
23
8
4
1
11
4
1
Temp °C
14
7
9
9
10
11
9
11
12
11
13
13
8
11
13
10
11
11
9
Feels °C
10
0
2
4
6
6
5
7
8
3
6
9
2
6
10
7
6
6
5
  • Map Icons:
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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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