Larsen Street Surf Break

Lat Long: 41.75° S 171.49° E

Larsen Street Surf Forecast and Surf Report

Issued: 5 pm 19 Aug 2026 (local time)

Forecast update in  hr  min

Today's Larsen Street sea temperature is
13.1° C
0.4° 

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 19 Aug 2026:

  • Best quality surf: Monday 24 Aug, 9PM (local time) - 8ft (2.5m), 14s period, W swell with glassy winds.
  • Most powerful swell: Monday 24 Aug, 3AM (local time) - 10ft (3.0m), 15s period, W swell with 4,836 kJ wave energy.
  • Next surfable swell (1★+): Thursday 20 Aug, 3AM (local time) - 5.5ft (1.7m), 14s 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 Thursday (Aug 20) at 3AM. The primary swell is predicted to be 1.7m and 14s period. 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 3.0m 15s and forecast to arrive on Monday (Aug 24) at 3AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 7s period and expected on Sunday (Aug 23) at 9AM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Thu 20th Aug)5.5ft (1.7m) 14s
Best Surf 9PM (Mon 24th Aug)8ft (2.5m) 14s
Most Powerful 3AM (Mon 24th Aug)10ft (3.0m) 15s

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


Short Range Forecast

Light rain (total 5mm), mostly falling on Sat morning. Very mild (max 12°C on Sat morning, min 9°C on Thu morning). Wind will be generally light.

Days 5-7 Weather Summary

Heavy rain (total 49mm), heaviest during Sat night. Very mild (max 14°C on Sat night, min 11°C on Sun night). Winds decreasing (fresh winds from the NW on Sat afternoon, calm by Mon night).

Wed
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
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
3
3
2
3
0
2
0
0
0
0
1
4
3
1
4
0
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2
WSW
15
1.8
WSW
14
1.5
WSW
14
1.4
WSW
14
1.3
WSW
13
1.3
WSW
15
1.2
WSW
14
0.9
WSW
14
0.9
WSW
13
2.2
W
10
3
WNW
9
2.5
W
9
2.5
W
9
3
W
16
3
W
15
2.5
W
14
2.3
W
14
2.1
W
14
2
W
14
1.9
WSW
13
Wave Graph
Metric surfscale
Energy kJ
1798
1294
838
691
563
678
549
356
277
1000
1431
1099
994
4705
3829
3029
2155
1657
1487
1327
Wind (km/h)
5
NNE
10
ESE
5
E
5
NW
5
ESE
5
ESE
20
SW
5
S
20
NNE
35
NW
20
W
20
WSW
30
SW
15
SW
10
W
15
WSW
0
NNE
20
WNW
25
WNW
25
SW
Wind State
cross
cross-off
cross-off
glassy
cross-off
glassy
cross
cross-off
cross-on
on
cross-on
cross-on
cross
cross
cross-on
cross-on
glassy
on
cross-on
cross
High Tide
3:26AM2.32m
3:54PM2.26m
4:24AM2.16m
4:59PM2.15m
5:37AM2.08m
6:14PM2.12m
6:52AM2.10m
7:23PM2.20m
7:55AM2.20m
8:18PM2.33m
8:44AM2.34m
9:03PM2.49m
Low Tide
9:18PM0.69m
9:42AM0.77m
10:13PM0.86m
10:41AM0.92m
11:20PM0.96m
11:52AM0.99m
00:34AM0.96m
1:04PM0.95m
1:40AM0.87m
2:03PM0.83m
2:33AM0.73m
2:51PM0.68m
clear
clear
clear
clear
part cloud
part cloud
clear
cloud
light rain
heavy rain
rain showers
rain showers
clear
rain showers
rain showers
rain showers
rain showers
rain showers
light rain
mod rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:18
7:16
7:15
7:13
7:11
7:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:54
5:55
5:57
5:58
5:59
6:00
6:00
 mm
5
13
18
3
2
3
3
5
2
4
6
Temp °C
11
10
10
10
10
10
11
10
12
13
14
12
12
12
13
13
13
14
14
13
Feels °C
9
8
8
8
8
8
6
7
7
6
10
7
5
7
10
10
10
9
10
8
  • 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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