Larsen Street surfForecast / West Coast South Island / New Zealand

information circle16 Day Weather and Surf, issued 6 pm Tuesday 24 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
17.0° 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 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Mar 24) at 10PM. The primary swell is predicted to be 0.8m and 12s period with a secondary swell of 0.2m and 11s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Larsen Street in the next 16 days are 4.0m 13s and forecast to arrive on Thursday (Mar 26) at 10PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.5m 11s period and expected on Friday (Mar 27) at 1PM.

Wave TypeTime (NZDT) & Date Wave Height & Period
Next good surf (1 star+)10PM (Tue 24th Mar)2.5ft (0.8m) 12s
Best Surf 1AM (Thu 26th Mar)4.5ft (1.3m) 15s
Most Powerful10PM (Thu 26th Mar)13ft (4.0m) 13s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast Heavy rain (total 21mm), heaviest during Thu morning. Very mild (max 19°C on Wed morning, min 16°C on Tue night). Winds increasing (calm on Tue night, strong winds from the NNE by Fri morning).

Days 3-6 Weather Summary Heavy rain (total 21mm), heaviest during Mon morning. Very mild (max 19°C on Fri afternoon, min 16°C on Sat night). Winds increasing (calm on Sat night, fresh winds from the NNE by Mon morning).

Tue
24
Wednesday
25
Thursday
26
Friday
27
Saturday
28
Sunday
29
Monday
30
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
1
1
1
3
1
1
3
1
0
0
1
2
2
1
0
1
0
0
0
2
Swell
Height Map
Wave Height (m) & direction (?)
0.9
WSW
0.8
WSW
0.8
WSW
0.9
WSW
1.3
WSW
1.2
WSW
0.9
WSW
4
NNW
3.5
NNW
3
NNW
2.5
NW
2.1
WNW
1
WSW
1
WSW
1
WSW
1
WSW
0.9
WSW
1.4
NW
1
WSW
1.6
NW
3.5
W
Period(s) (?)1312111115141313121099141313131311161011
Wave
Graph
(?)Metric surfscale
Energy kJ (?)23516114517374452730347193460197410796443903843723672854534754613076
Wind
(km/h)
10
SW
5
E
5
E
5
NNE
10
ESE
25
E
15
ESE
30
ENE
30
NE
35
NNE
25
NNW
10
W
10
WSW
5
SSE
5
NE
15
NNE
15
ENE
40
NNE
25
WNW
35
SW
30
SW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crossglasscross-
off
cross-
on
cross-
off
cross-
off
cross-
off
cross-
off
crosscross-
on
cross-
on
cross-
on
crossglasscrosscrosscross-
off
crossoncrosscross-
off
High Tide
/ height (m)
3:50AM
2.61
4:26PM
2.48
4:59AM
2.46
5:44PM
2.33
6:21AM
2.38
7:10PM
2.30
7:43AM
2.43
8:24PM
2.39
8:49AM
2.56
9:23PM
2.53
9:43AM
2.70
10:10PM
2.66
10:27AM
2.81
Low Tide
/ height (m)
9:39PM
0.44
10:11AM
0.48
10:42PM
0.63
11:24AM
0.63
11:58PM
0.74
12:45PM
0.67
1:19AM
0.74
2:03PM
0.60
2:30AM
0.63
3:06PM
0.46
3:27AM
0.48
3:57PM
0.31
4:15AM
0.34
Tue
24
Wednesday
25
Thursday
26
Friday
27
Saturday
28
Sunday
29
Monday
30
Sunrise--7:41--7:41--7:43--7:43--7:45--7:46--7:47
Sunset7:39--7:37--7:37--7:35--7:32--7:31--7:30--
clear
part cloud
part cloud
cloud
light rain
mod rain
light rain
light rain
mod rain
rain showers
mod rain
rain showers
cloud
part cloud
part cloud
clear
rain showers
rain showers
light rain
part cloud
rain showers
Rain (mm)
----28227571----263-1
Temp. °C171719181916171919191918181717171718181515
Feels °C (?)1516171717121413121416171817151516141689
  • 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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