Castlepoint - The Gap Surf Break

Lat Long: 40.91° S 176.22° E

Castlepoint - The Gap Surf Forecast and Surf Report

Issued: 5 am 03 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: Tuesday 8 Sep, 12AM (local time) - 7ft (2.1m), 9s period, S swell with glassy winds.
  • Most powerful swell: Monday 7 Sep, 6PM (local time) - 10ft (3.0m), 10s period, SSW swell with 1,962 kJ wave energy.
  • Next surfable swell (1★+): Thursday 3 Sep, 9PM (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 Thursday (Sep 03) at 9PM. The primary swell is predicted to be 1.0m and 11s period with a secondary swell of 0.1m and 9s. 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 3.0m 10s and forecast to arrive on Monday (Sep 07) at 6PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Saturday (Sep 05) at 12AM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Thu 3rd Sep)3.5ft (1.0m) 11s
Best Surf12AM (Tue 8th Sep)7ft (2.1m) 9s
Most Powerful 6PM (Mon 7th Sep)10ft (3.0m) 10s

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


The Lowdown

Alright folks, Rusty here. We’ve got a long-range look at Castlepoint - The Gap, and it’s a bit of a slow burn, but there’s a couple of proper gems hiding in the second week if you can wait.

The overall pattern is quiet for the first few days, with a few small, clean windows but nothing that’s really gonna get the heart pumping. The water is sitting at 53°, which is a touch cooler than usual for this time of year, so you’ll want a decent wetsuit.

Thursday morning, the 3rd of September, is our first nod. It’s a clean 5ft swell from the S, with a solid 12-second period, and a fresh offshore from the WNW making it look tidy. The combined energy is moderate (698), so there’s a bit of push, but the report says it’s marginal. It’s a beginner-friendly spot and pretty consistent, but don’t expect fireworks.

Friday the 4th through to Sunday the 6th see the swell drop right off, with tiny waves under 2ft. It’s clean, but there’s just not enough to get excited about. A few days of flatness.

Monday the 7th brings a jump in size, but it’s a messy one. A 7ft SSW swell on the morning gets chopped up by a 19 mph cross-offshore wind, and by the afternoon it’s a 10ft beast with a 10-second period and a cross-shore wind. The wave energy is strong (1669), but the conditions are poor. This one is strictly for the experts if anyone’s mad enough.

Tuesday the 8th and Wednesday the 9th are back to small, clean, and ordinary. Not worth rushing for.

Now, the first real standout is Friday the 11th of September. The morning session delivers a 6ft SSW swell with a 9-second period, clean with a moderate offshore from the NW. The combined energy is strong (916), and the report says “expect good surf conditions.” This is the pick of the first week.

Saturday the 12th of September is a monster day, but it’s a write-off for most. The afternoon sees a 15ft SSW swell with a 16-second period and a strong breeze. The energy reading is massive (14741), but the report says it’s predicted to be too big for this break. Only the absolute lunatics with big-wave guns need apply.

The best of the bunch comes on Wednesday the 16th of September. The afternoon is looking absolutely mint. We’ve got a 8ft S swell with a 14-second period, a clean offshore from the WNW at 16 mph, and excellent surf conditions for experienced surfers. The energy is very strong (2419). This is a proper session for the crew that knows what they’re doing. It’s a bit of a wait, but it’s the one to circle on the calendar.

The following morning, Thursday the 17th, is also a beauty. A 6ft S swell, 12-second period, gentle offshore, and very good surf conditions. Another solid option.

Overall, hold out for the 11th, and definitely the 16th. The rest is a mix of small and clean, or big and messy. Keep an eye on that long-range forecast.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Fri morning. Very mild (max 17°C on Thu afternoon, min 11°C on Fri night). Winds decreasing (strong winds from the WNW on Fri night, light winds from the WNW by Sat morning).

Days 4-6 Weather Summary

Light rain (total 4mm), mostly falling on Sun night. Very mild (max 16°C on Sun afternoon, min 5°C on Tue night). Mainly fresh winds.

Thursday
3
Friday
4
Saturday
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
1
0
0
0
0
0
0
0
0
0
0
0
0
2
1
1
0
1
0
0
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
12
1.2
S
12
0.9
S
11
0.7
S
10
0.5
S
10
0.2
SSW
15
0.5
SSW
8
0.6
SSW
8
0.8
SSW
10
0.6
SSW
17
0.5
SSW
17
0.3
SSW
17
2.2
SSW
7
3
SSW
10
2.1
S
9
1.7
S
9
1.5
SSE
9
1.1
SSE
9
1
SSE
9
0.9
SSE
9
0.5
SSW
9
Wave Graph
Metric surfscale
Energy kJ
690
396
191
96
45
22
39
55
125
229
164
56
528
1652
732
463
322
181
161
138
49
Wind (km/h)
35
WNW
15
NW
25
NW
25
NNW
35
WNW
30
W
15
WNW
30
WNW
35
WNW
25
NW
25
NW
15
N
30
SW
30
SSW
5
W
20
NNW
25
WNW
30
SW
10
NNW
30
NW
30
NW
Wind State
off
cross-off
cross-off
cross-off
off
off
off
off
off
off
cross-off
cross-off
cross-off
cross
glassy
cross-off
off
cross-off
cross-off
off
off
High Tide
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
3:03PM1.43m
Low Tide
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
8:45AM-0.07m
9:18PM-0.01m
clear
clear
part cloud
rain showers
clear
clear
clear
part cloud
clear
part cloud
part cloud
rain showers
light rain
cloud
part cloud
cloud
part cloud
part cloud
clear
clear
part cloud
<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
6:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:52
5:52
5:53
5:54
5:55
5:57
5:58
 mm
1
3
1
Temp °C
16
17
15
15
16
12
15
15
12
13
16
15
10
10
9
12
14
9
14
14
13
Feels °C
10
13
11
8
9
3
12
9
5
7
11
11
3
3
5
7
8
2
9
7
7
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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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