Larsen Street surfForecast / West Coast South Island / New Zealand

information circle12 Day Weather and Surf, issued 12 pm Monday 09 Mar 2026 NZDT
Forecast update in hr  min  s Forecast update imminent
Larsen Street surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Larsen Street sea temperature is
17.2° C
(Which is normal for this time of year)

Best Forecast Surf Conditions for Larsen Street this week:

The surf forecast for Larsen Street over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Mar 10) at 4AM. The primary swell is predicted to be 1.5m and 14s period with a secondary swell of 1.4m and 10s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Larsen Street in the next 12 days are 3.5m 12s and forecast to arrive on Sunday (Mar 15) at 4AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 8s period and expected on Thursday (Mar 12) at 4AM.

Wave TypeTime (NZDT) & Date Wave Height & Period
Next good surf (1 star+) 4AM (Tue 10th Mar)5ft (1.5m) 14s
Best Surf 7AM (Tue 10th Mar)6ft (1.9m) 14s
Most Powerful 4AM (Sun 15th Mar)11ft (3.5m) 12s

Table - best surf conditions forecast for Larsen Street over the next 12 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast Light rain (total 2mm), mostly falling on Mon morning. Very mild (max 16°C on Mon morning, min 13°C on Mon night). Wind will be generally light.

Days 3-6 Weather Summary Heavy rain (total 38mm), heaviest during Thu night. Very mild (max 19°C on Fri morning, min 14°C on Sat morning). Winds increasing (light winds from the NNE on Thu morning, strong winds from the WSW by Sat afternoon).

Monday
09
Tuesday
10
Wednesday
11
Thursday
12
Friday
13
Saturday
14
Sunday
15
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
4
3
3
3
2
2
2
0
1
0
0
1
0
0
0
0
0
1
2
2
4
Swell
Height Map
Wave Height (m) & direction (?)
1.9
WSW
2.1
WSW
1.5
WSW
1.7
WSW
1.5
WSW
1.2
WSW
0.9
WSW
0.9
WSW
0.7
WSW
0.6
WSW
0.6
WSW
0.7
NNW
0.7
NNW
1.2
W
1.8
W
3
WSW
3
W
3.5
W
3
W
3
W
2.5
WSW
Period(s) (?)15151414141312121211121211111091011131415
Wave
Graph
(?)Metric surfscale
Energy kJ (?)14791822874109580146127620311995109136109338627120817902752318832813141
Wind
(km/h)
10
ENE
10
SW
10
NE
5
ESE
15
WSW
10
ESE
5
ENE
10
NNW
5
E
5
NNE
15
NNE
15
ENE
15
NW
35
SW
30
SW
40
SW
40
WSW
35
SW
25
SSW
20
SW
10
SW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
crosscrosscross-
off
crosscross-
off
cross-
off
onglasscross-
on
cross-
on
cross-
off
oncrosscrosscrosscrosscrosscross-
off
crosscross-
off
High Tide
/ height (m)
3:11PM
2.46
3:32AM
2.39
3:54PM
2.28
4:20AM
2.23
4:50PM
2.12
5:24AM
2.10
6:05PM
2.03
6:46AM
2.07
7:29PM
2.06
8:02AM
2.16
8:37PM
2.18
9:00AM
2.32
9:28PM
2.36
Low Tide
/ height (m)
9:25PM
0.65
9:48AM
0.74
10:10PM
0.83
10:40AM
0.90
11:08PM
0.98
11:48AM
1.01
12:23AM
1.04
1:09PM
1.00
1:42AM
0.99
2:20PM
0.89
2:44AM
0.84
3:15PM
0.69
3:34AM
0.65
Monday
09
Tuesday
10
Wednesday
11
Thursday
12
Friday
13
Saturday
14
Sunday
15
Sunrise7:22--7:24--7:24--7:26--7:26--7:28--7:28--
Sunset-8:05--8:04--8:01--8:00--7:59--7:57--7:54-
light rain
part cloud
light rain
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
clear
clear
heavy rain
rain showers
rain showers
rain showers
light rain
rain showers
rain showers
part cloud
part cloud
rain showers
Rain (mm)
1-1--------21534122--1
Temp. °C161616151616151615161718191615151616161616
Feels °C (?)16151413131414151514151419119789111214
  • 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 12 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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