Larsen Street surfForecast / West Coast South Island / New Zealand

information circle16 Day Weather and Surf, issued 11 pm Wednesday 15 Apr 2026 NZST
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
17.6° C
(Which is 1.6°C warmer than 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 Friday (Apr 17) at 6AM. The primary swell is predicted to be 3.0m and 12s period with a secondary swell of 0.1m and 10s. 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 3.0m 15s and forecast to arrive on Sunday (Apr 19) at 12PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 9s period and expected on Thursday (Apr 23) at 6AM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Fri 17th Apr)10ft (3.0m) 12s
Best Surf 6PM (Sun 19th Apr)10ft (3.0m) 14s
Most Powerful12PM (Sun 19th Apr)10ft (3.0m) 15s

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 81mm), heaviest during Fri night. Very mild (max 16°C on Fri afternoon, min 12°C on Thu night). Winds decreasing (strong winds from the WSW on Wed night, calm by Thu night).

Days 3-6 Weather Summary Heavy rain (total 40mm), heaviest during Sat night. Very mild (max 14°C on Sun morning, min 9°C on Mon night). Wind will be generally light.

Thursday
16
Friday
17
Saturday
18
Sunday
19
Monday
20
Tuesday
21
Wed
22
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
0
2
4
0
0
0
3
3
3
3
4
2
2
1
1
1
1
0
0
Swell
Height Map
Wave Height (m) & direction (?)
3
W
4
W
4
W
3
W
2.5
W
2.3
W
1.6
WSW
1.7
WSW
1.2
WSW
2.3
W
2.5
W
3
W
2.5
W
1.2
WSW
1
WSW
0.9
WSW
0.6
WSW
0.5
W
0.3
WSW
0.4
WSW
0.4
WSW
Period(s) (?)101011121213131112121615141313111211161412
Wave
Graph
(?)Metric surfscale
Energy kJ (?)169730813385275920321712799777432164834983799263950733918010661497451
Wind
(km/h)
45
WSW
45
SW
45
WSW
20
SW
15
E
20
NNW
35
NNW
25
NNW
5
WNW
5
NNE
10
NE
15
NE
10
SE
15
ESE
15
ESE
10
S
5
ENE
10
ESE
15
ENE
15
E
20
NNE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
crosscrosscrosscross-
off
oncross-
on
onglasscrosscrosscrossoffcross-
off
offcross-
off
cross-
off
offcross-
off
cross-
off
cross
High Tide
/ height (m)
Low Tide
/ height (m)
Thursday
16
Friday
17
Saturday
18
Sunday
19
Monday
20
Tuesday
21
Wed
22
Sunrise-7:05--7:05--7:07--7:07--7:09--7:09--7:11-
Sunset--6:00--6:00--5:58--5:57--5:54--5:53--5:52
mod rain
rain showers
rain showers
rain showers
rain showers
mod rain
heavy rain
heavy rain
mod rain
heavy rain
thunderstorm
clear
part cloud
cloud
light rain
mod rain
light rain
rain showers
rain showers
clear
light rain
Rain (mm)
105242829129157---110522-1
Temp. °C151314131416161615131414121314111013131617
Feels °C (?)1035611121112159121010910781191313
  • 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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