Castlepoint - The Gap Surf Break

Lat Long: 40.91° S 176.22° E

Castlepoint - The Gap Surf Forecast and Surf Report

Issued: 5 pm 02 Sep 2026 (local time)

Forecast update in  hr  min

Today's Castlepoint - The Gap sea temperature is
11.8°C
0.9° 

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 2 Sep 2026:

  • Best quality surf: Thursday 3 Sep, 12AM (local time) - 7ft (2.2m), 13s period, S swell with offshore winds.
  • Most powerful swell: Thursday 3 Sep, 12AM (local time) - 7ft (2.2m), 13s period, S swell with 1,710 kJ wave energy.
  • Next surfable swell (1★+): Thursday 3 Sep, 12AM (local time) - 7ft (2.2m), 13s 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 Thursday (Sep 03) at 12AM. The primary swell is predicted to be 2.2m and 13s period with a secondary swell of 0.1m and 10s. 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 2.2m 13s and forecast to arrive on Thursday (Sep 03) at 12AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Thursday (Sep 03) at 3AM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Thu 3rd Sep)7ft (2.2m) 13s
Best Surf12AM (Thu 3rd Sep)7ft (2.2m) 13s
Most Powerful12AM (Thu 3rd Sep)7ft (2.2m) 13s

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


The Lowdown

Alright, Rusty here. Let’s have a look at the next 16 days for Castlepoint - The Gap.

Alright, mate, it’s a mixed bag over the next couple of weeks. There’s one proper standout on the horizon, but you’ll need some patience. The water temperature is sitting at 53°, which is about 2° cooler than usual for this time of year, so it’s a touch nippy but nothing too wild.

The first real action kicks off Wednesday afternoon, the 2nd of September. We’ve got a solid 8ft swell from the south, with a long period of 15 seconds. That’s a proper groundswell, and with a strong WNW offshore breeze, it’s going to be clean. The combined energy is pumping at 3183, so there’s plenty of power. This is a good one for the experienced crew as the size is pushing into expert territory, but the conditions are prime. For beginners, it’s going to be too big.

Thursday morning, the 3rd, drops to 5ft from the south (12-second period), still with a fresh offshore breeze from the WNW. The energy is a moderate 699. It’s a step down in size, but still clean and surfable. Thursday afternoon gets smaller, down to 4ft, with a moderate NW offshore.

From Friday the 4th through to early the following week, it gets pretty grim. The swell drops right off, with wave heights from 1.0ft to 2ft and a mix of light rain or strong winds. The energy is weak, often below 100. Honestly, it’s not worth paddling out for these days.

Now, here’s the standout. Saturday the 12th of September is looking like the best of the bunch. The morning brings a clean 8ft swell from the SSW, with a 10-second period. The wind is a light offshore, so it’ll be glassy. The combined energy is a strong 1576. This is a proper session for intermediate to advanced surfers. The afternoon holds up at 7ft, still with light winds, but it goes a bit cross-onshore, so get out early.

Sunday the 13th is still surfable but not as clean. A 6ft SSW swell with a fresh offshore WNW wind, but the energy is a bit lower at 765. It’s a solid option but not the standout.

The rest of the second week, from the 14th onwards, is mostly poor. The swell is small, or the wind is messy. There’s a glimpse of something on the 15th and 16th with some small, clean 3ft to 4ft swells, but nothing to get excited about. The 17th of September has a 4ft SSW swell with a 12-second period, but the wind is cross-off and the conditions are rated poor.

So, to wrap it up: The best bet is Wednesday the 2nd for the big, clean groundswell, and definitely Saturday the 12th for the clean, powerful surf. The rest of the window is mostly small and messy.

Rusty

Short Range Forecast

Some drizzle, heaviest during Fri morning. Very mild (max 17°C on Thu afternoon, min 10°C on Fri night). Winds decreasing (strong winds from the WNW on Fri night, light winds from the NW by Sat morning).

Days 5-7 Weather Summary

Light rain (total 5mm), mostly falling on Sun night. Very mild (max 17°C on Sun afternoon, min 7°C on Mon night). Mainly strong winds.

Wed
2
Thursday
3
Friday
4
Saturday
5
Sunday
6
Monday
7
Tuesday
8
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
3
1
1
0
0
0
0
0
0
0
0
0
0
0
0
2
1
0
2
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
S
15
2.2
S
13
1.5
S
12
1.1
S
12
0.9
S
11
0.7
S
10
0.5
S
10
0.2
SSW
15
0.4
SSW
8
0.5
SSW
8
0.8
SSW
11
0.3
SSW
17
0.5
SSW
17
0.3
SSW
17
2
SSW
6
3
SSW
10
1.9
S
10
1.5
S
9
1.2
S
9
2.2
S
8
Wave Graph
Metric surfscale
Energy kJ
3170
1710
690
333
191
98
45
22
26
35
133
58
166
56
336
1633
660
365
225
639
Wind (km/h)
30
WNW
20
WNW
35
WNW
25
NW
25
NW
25
NNW
40
WNW
30
W
15
WNW
20
WNW
30
NW
30
NW
15
NNW
35
NW
40
SW
35
SSW
10
N
25
WNW
35
SW
10
WNW
Wind State
off
off
off
off
cross-off
cross-off
off
off
off
off
off
cross-off
cross-off
cross-off
cross-off
cross
cross-off
off
cross-off
off
High Tide
9:25PM1.28m
9:42AM1.37m
10:15PM1.30m
10:31AM1.42m
11:03PM1.32m
11:23AM1.45m
11:52PM1.32m
12:17PM1.46m
00:45AM1.30m
1:11PM1.46m
1:41AM1.28m
2:07PM1.45m
2:39AM1.26m
Low Tide
3:17PM0.12m
3:42AM0.13m
4:10PM0.07m
4:30AM0.08m
5:01PM0.03m
5:19AM0.03m
5:51PM-0.02m
6:07AM-0.01m
6:40PM-0.05m
6:56AM-0.05m
7:30PM-0.06m
7:48AM-0.07m
8:22PM-0.05m
part cloud
clear
clear
clear
part cloud
rain showers
clear
clear
clear
clear
part cloud
part cloud
cloud
light rain
rain showers
clear
part cloud
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:37
6:35
6:33
6:31
6:30
6:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:51
5:52
5:52
5:53
5:54
5:55
5:57
 mm
1
3
2
Temp °C
15
13
16
17
15
16
17
12
15
15
12
15
17
15
10
11
11
13
11
8
Feels °C
8
8
10
12
10
11
9
3
12
10
6
10
13
9
1
3
5
7
4
2
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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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