Larsen Street surfForecast / West Coast South Island / New Zealand

information circle12 Day Weather and Surf, issued 12 am Wednesday 19 Nov 2025 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
15.1° C
(Which is slightly warmer than usual)


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 Wednesday (Nov 19) at 7AM. The primary swell is predicted to be 2.0m and 10s period with a secondary swell of 0.5m and 11s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Larsen Street in the next 12 days are 2.2m 14s and forecast to arrive on Thursday (Nov 20) at 10AM. 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 8s period and expected on Thursday (Nov 20) at 1PM.

Wave TypeTime (NZDT) & Date Wave Height & Period
Next good surf (1 star+) 7AM (Wed 19th Nov)6.5ft (2.0m) 10s
Best Surf10PM (Thu 20th Nov)6.5ft (2.0m) 13s
Most Powerful10AM (Thu 20th Nov)7ft (2.2m) 14s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Heavy rain (total 22mm), heaviest during Tue night. Very mild (max 17°C on Tue night, min 15°C on Wed night). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Very mild (max 15°C on Fri night, min 11°C on Sat night). Winds increasing (calm on Sat morning, strong winds from the SW by Sun afternoon).

Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tue
25
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
4
3
2
3
3
1
3
2
1
3
4
2
2
0
0
1
0
0
2
0
0
Swell
Height Map
Wave Height (m) & direction (?)
2.5
NNW
1.9
NNW
1.5
NNW
1.6
WSW
2.2
W
2.1
W
1.9
WSW
1.7
WSW
1.7
WSW
1.7
WSW
1.7
WSW
1.6
WSW
1.5
WSW
1.2
WSW
1.7
WSW
1.2
WSW
1
WSW
1
WSW
0.9
WSW
0.9
WSW
1.1
WSW
Period(s) (?)10109131413131313131514141113121212111111
Wave
Graph
(?)Metric surfscale
Energy kJ (?)14156433789431787156112881074105810581346980862328995368260256225176280
Wind
(km/h)
15
ENE
5
NNW
0
W
0
NE
15
SW
25
SW
10
SSW
10
WSW
20
SW
10
S
5
NNW
15
SW
25
SSW
25
SW
40
SW
25
SSW
20
SW
20
WSW
10
S
5
W
15
SW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
glassglassglasscrosscrosscross-
off
crosscrosscross-
off
glasscrosscross-
off
crosscrosscross-
off
crosscrosscross-
off
cross-
on
cross
High Tide
/ height (m)
10:26PM
2.61
10:46AM
2.65
11:02PM
2.65
11:20AM
2.69
11:38PM
2.66
11:56AM
2.70
12:14AM
2.65
12:32PM
2.68
12:51AM
2.60
1:09PM
2.63
1:29AM
2.53
1:48PM
2.57
2:10AM
2.45
2:29PM
2.49
Low Tide
/ height (m)
4:36AM
0.41
4:55PM
0.42
5:12AM
0.40
5:32PM
0.39
5:48AM
0.40
6:08PM
0.40
6:24AM
0.43
6:45PM
0.43
7:01AM
0.48
7:23PM
0.49
7:39AM
0.55
8:03PM
0.55
8:20AM
0.62
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tue
25
Sunrise-6:01--6:00--6:00--5:58--5:58--5:58--5:56-
Sunset--8:37--8:37--8:38--8:40--8:42--8:43--8:44
mod rain
light rain
light rain
rain showers
part cloud
clear
clear
clear
clear
part cloud
cloud
part cloud
clear
clear
clear
part cloud
clear
clear
clear
clear
part cloud
Rain (mm)
81310-----------------
Temp. °C171616161516161716151514131313121313121415
Feels °C (?)161717161412141513141512985699111111
  • 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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