Asa surfForecast / Kattegat and Skagerrack / Sweden

information circle12 Day Weather and Surf, issued 6 pm Thursday 11 Dec 2025 CET
Forecast update in hr  min  s Forecast update imminent
Asa surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Asa sea temperature is
6.9° C
(Which is 2.3°C warmer than normal for this time of year)


Best Forecast Surf Conditions for Asa this week:

The most powerful waves expected at Asa in the next 12 days are 1.9m 6s and forecast to arrive on Thursday (Dec 18) at 1PM. Winds are predicted to be onshore at the time the swell arrives.

Wave TypeTime (CET) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 1PM (Thu 18th Dec)6ft (1.9m) 6s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Light rain (total 6mm), mostly falling on Sat morning. Mild temperatures (max 8°C on Thu afternoon, min 5°C on Fri night). Mainly fresh winds.

Days 3-6 Weather Summary Some drizzle, heaviest during Wed morning. Mild temperatures (max 7°C on Sun afternoon, min 5°C on Mon night). Wind will be generally light.

Thu
11
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
1.5
W
1.1
WNW
0.4
NW
0.4
SW
0.6
S
0.8
SSW
0.9
W
1
WSW
1.3
SSW
1.2
SW
1.1
SW
1.2
SSW
1
SSW
0.8
SSW
0.4
SSW
0.4
SSW
0.7
SSW
0.8
SW
0.7
WSW
0.8
SSW
1.9
SSW
Period(s) (?)555335555555554445446
Wave
Graph
(?)Metric surfscale
Energy kJ (?)126727282536479085718348245515251621266
Wind
(km/h)
35
W
20
W
10
SW
15
SSE
25
SSE
25
W
25
W
25
WSW
30
SW
25
SW
25
SW
25
SSW
20
S
20
S
20
S
20
S
25
S
15
WSW
15
SW
25
SSW
30
WSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
cross-
on
oncrosscross-
on
cross-
on
cross-
on
onononononcross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
oncross-
on
on
High Tide
/ height (m)
1:22AM
0.10
1:38PM
0.13
2:15AM
0.09
2:32PM
0.13
3:02AM
0.09
3:22PM
0.13
3:43AM
0.08
4:08PM
0.13
4:20AM
0.09
4:51PM
0.13
4:53AM
0.10
5:34PM
0.14
5:27AM
0.10
Low Tide
/ height (m)
7:22PM
0.01
7:18AM
0.02
8:19PM
0.00
8:04AM
0.01
9:10PM
-0.00
8:47AM
0.00
9:54PM
0.00
9:26AM
0.00
10:34PM
0.01
10:04AM
0.01
11:10PM
0.03
10:42AM
0.02
11:47PM
0.04
11:21AM
0.02
Thu
11
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Sunrise--8:41--8:42--8:44--8:45--8:45--8:47--8:48
Sunset3:26--3:26--3:26--3:26--3:26--3:26--3:26--
cloud
part cloud
part cloud
part cloud
cloud
rain showers
clear
light rain
cloud
cloud
cloud
part cloud
part cloud
clear
clear
cloud
part cloud
light rain
part cloud
rain showers
rain showers
Rain (mm)
-----4-2---------1-73
Temp. °C887757767776765567777
Feels °C (?)124402201120210103430
  • 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 Asa Surf forecast

The above surf forecast table for Asa provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Asa can be found by selecting the local surf guide option on the grey menu. Our Asa 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 (Asa) 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 Asa 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.

Asa is 17 km (11 miles) from Kungsbacka. If you plan a holiday in Kattegat and Skagerrack, look for hotels and other accommodation in Kungsbacka. Kungsbacka has rooms for a wide range of budgets as well as car hire and transport links.

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