Larsen Street Surf Break

Lat Long: 41.75° S 171.49° E

Larsen Street Surf Forecast and Surf Report

Issued: 11 pm 13 Aug 2026 (local time)

Forecast update in  hr  min

Today's Larsen Street sea temperature is
12.9° C
0.2° 

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 13 Aug 2026:

  • Best quality surf: Sunday 16 Aug, 12AM (local time) - 8ft (2.5m), 16s period, WSW swell with cross-offshore winds.
  • Most powerful swell: Saturday 15 Aug, 6AM (local time) - 10ft (3.0m), 16s period, WSW swell with 3,937 kJ wave energy.
  • Next surfable swell (1★+): Friday 14 Aug, 9AM (local time) - 2.5ft (0.8m), 18s 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 (Aug 14) at 9AM. The primary swell is predicted to be 0.8m and 18s period with a secondary swell of 1.2m and 9s. Another secondary swell of 0.9m and 14s is also forecast. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Larsen Street in the next 16 days are 3.0m 16s and forecast to arrive on Saturday (Aug 15) at 6AM. Winds are predicted to be cross-offshore at the time the swell arrives.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Fri 14th Aug)2.5ft (0.8m) 18s
Best Surf12AM (Sun 16th Aug)8ft (2.5m) 16s
Most Powerful 6AM (Sat 15th Aug)10ft (3.0m) 16s

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


Short Range Forecast

Mostly dry. Very mild (max 12°C on Thu night, min 8°C on Sat night). Winds increasing (calm on Fri morning, fresh winds from the SW by Sat afternoon).

Days 5-7 Weather Summary

Mostly dry. Very mild (max 12°C on Tue morning, min 6°C on Sun night). Wind will be generally light.

Friday
14
Saturday
15
Sunday
16
Monday
17
Tuesday
18
Wednesday
19
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
3
3
1
4
4
4
4
3
1
3
3
1
3
4
4
3
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
16
0.8
WSW
18
1.2
WSW
16
2.1
W
17
2.5
WSW
16
2.5
WSW
16
2.5
WSW
16
2.5
WSW
15
2.5
WSW
15
1.7
WSW
15
1.4
WSW
15
1.8
WSW
14
1.6
WSW
14
1.4
WSW
10
1.4
WSW
10
1.4
WSW
13
1.8
WSW
16
1.8
WSW
15
1.7
WSW
14
Wave Graph
Metric surfscale
Energy kJ
671
422
662
2713
3529
3485
3594
2916
2700
1240
773
1277
920
370
367
585
1571
1453
1143
Wind (km/h)
5
E
5
SE
15
SW
15
SSW
15
S
30
SW
10
E
10
SE
10
SSE
10
SE
5
ESE
15
SW
5
ESE
5
ESE
20
SW
10
ESE
5
ENE
5
NW
5
E
Wind State
cross-off
off
cross
cross-off
cross-off
cross
cross-off
off
cross-off
off
off
cross
off
off
cross
off
cross-off
glassy
cross-off
High Tide
11:08PM3.14m
11:34AM3.00m
11:52PM3.14m
12:16PM2.97m
00:34AM3.06m
12:57PM2.88m
1:15AM2.91m
1:37PM2.75m
1:55AM2.72m
2:18PM2.59m
2:38AM2.51m
3:02PM2.41m
Low Tide
5:24AM-0.09m
5:41PM-0.01m
6:07AM-0.07m
6:23PM0.03m
6:49AM0.02m
7:05PM0.14m
7:30AM0.18m
7:47PM0.30m
8:11AM0.37m
8:31PM0.49m
8:54AM0.58m
9:18PM0.69m
part cloud
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:26
7:26
7:24
7:22
7:20
7:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:50
5:51
5:52
5:52
5:53
5:54
 mm
Temp °C
12
12
12
11
12
12
11
11
12
10
8
10
9
12
11
10
11
11
10
Feels °C
11
11
9
7
6
5
7
7
7
5
4
5
5
9
6
7
8
9
7
  • Map Icons:
  • Break
  • 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 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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