Larsen Street Surf Break

Lat Long: 41.75° S 171.49° E

Larsen Street Surf Forecast and Surf Report

Issued: 5 am 16 Sep 2026 (local time)

Forecast update in  hr  min

Today's Larsen Street sea temperature is
12.5°C
0.3° 

Larsen Street surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Larsen Street surf forecast from 15 Sep 2026:

  • Best quality surf: Sunday 20 Sep, 6AM (local time) - 16ft (5.0m), 11s period, WSW swell with cross-offshore winds.
  • Most powerful swell: Sunday 20 Sep, 6PM (local time) - 15ft (4.5m), 16s period, W swell with 10,536 kJ wave energy.
  • Next surfable swell (1★+): Friday 18 Sep, 12AM (local time) - 7ft (2.1m), 16s period with WSW swell.

Best Forecast Surf Conditions for Larsen Street this week:

The surf forecast for Larsen Street over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Sep 18) at 12AM. The primary swell is predicted to be 2.1m and 16s period with a secondary swell of 3.0m and 10s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Larsen Street in the next 16 days are 4.5m 16s and forecast to arrive on Sunday (Sep 20) 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 0.3m 8s period and expected on Friday (Sep 18) at 3PM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Fri 18th Sep)7ft (2.1m) 16s
Best Surf 6AM (Sun 20th Sep)16ft (5.0m) 11s
Most Powerful 6PM (Sun 20th Sep)15ft (4.5m) 16s

Table - best surf conditions forecast for Larsen Street over the next 16 days.


Short Range Forecast

Heavy rain (total 44mm), heaviest during Wed night. Very mild (max 13°C on Wed night, min 9°C on Thu night). Winds decreasing (strong winds from the SW on Thu morning, calm by Fri night).

Days 4-6 Weather Summary

Moderate rain (total 18mm), heaviest on Mon night. Very mild (max 13°C on Sat morning, min 10°C on Sun morning). Winds decreasing (strong winds from the SW on Sat night, calm by Sun night).

Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
1
4
1
3
4
1
0
2
!
!
7
3
2
1
1
1
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.2
WSW
12
1.6
W
11
1.3
WSW
13
2
WSW
14
3
WSW
13
2.1
WSW
16
2.1
WSW
15
3
WSW
15
2.5
WSW
15
2.5
WSW
15
3
WSW
15
3.5
W
15
5
WSW
13
5
W
14
4
W
16
2.5
W
15
2.5
W
14
1.9
W
13
2.2
WSW
13
2.5
WSW
14
2.5
WSW
14
Wave Graph
Metric surfscale
Energy kJ
439
617
555
1379
2996
2107
1976
4243
3017
2976
3665
5441
8897
9832
8079
2790
2850
1283
1544
2713
2462
Wind (km/h)
15
NE
25
NE
30
NE
40
SW
35
SW
15
S
25
SW
15
SW
5
S
35
WSW
30
W
35
SW
40
SW
30
SW
0
SSW
15
SW
20
SW
20
NE
30
SW
30
SW
20
SW
Wind State
cross
cross
cross
cross
cross
cross-off
cross
cross
cross-off
cross
cross-on
cross
cross-off
cross
glassy
cross
cross
cross
cross
cross
cross
High Tide
1:37PM2.59m
1:58AM2.48m
2:19PM2.42m
2:43AM2.29m
3:09PM2.25m
3:41AM2.13m
4:14PM2.12m
4:56AM2.04m
5:34PM2.09m
6:17AM2.06m
6:48PM2.17m
7:22AM2.18m
7:44PM2.32m
Low Tide
7:52PM0.52m
8:11AM0.63m
8:37PM0.71m
8:59AM0.82m
9:31PM0.88m
9:58AM0.97m
10:39PM0.99m
11:12AM1.03m
11:57PM0.99m
12:28PM0.98m
1:06AM0.88m
1:29PM0.85m
1:59AM0.71m
cloud
cloud
heavy rain
heavy rain
rain showers
part cloud
part cloud
part cloud
rain showers
mod rain
rain showers
rain showers
cloud
part cloud
cloud
part cloud
part cloud
mod rain
light rain
clear
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:33
6:33
6:31
6:28
6:26
6:26
6:24
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:23
6:24
6:25
6:27
6:28
6:29
6:30
 mm
28
14
1
1
6
2
3
7
4
4
Temp °C
11
12
13
11
10
10
11
11
11
13
12
12
10
11
11
11
11
13
12
12
11
Feels °C
7
7
8
3
2
4
5
7
10
7
6
6
0
4
9
7
6
10
7
5
6
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
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Information about the Larsen Street Surf forecast

The above surf forecast table for Larsen Street provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Larsen Street can be found by selecting the local surf guide option on the grey menu. Our Larsen Street 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 (Larsen Street) 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 Larsen Street 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 West Coast South Island? If you are looking for accommodation near Larsen Street, camping, hotels and holiday cottages in West Coast South Island, consider staying in Nelson which is 157 km (98 miles) away.

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