Kosterhavet National Park

7mm or semi-dry + hood typical

Kosterhavet National Park at a glance

Kosterhavet National Park is a dive site in Sweden. Typically most favorable May · from 3 years of archive data. Recent reports put the water around 13°C (55°F). Check the latest conditions and entry details before you go.

No window today· next: Wed 8:00–17:00 · moderate

Forecast for this hour · 16:00 · run 10 h ago

3.2 m (10.4 ft)waves — about three meters expected (waves — about ten feet expected)

Tap a factor for its source and model point · Forecast 13°C · seasonal avg 13°C ( · Forecast 55°F · seasonal avg 55°F)

Dive windows this week

Lightest wind: Sat

Mon

3.3 m waves · 27 kn wind (10.9 ft waves · 27 kn wind)

Tue

2.2 m waves · 29 kn wind (7.2 ft waves · 29 kn wind)

Wed

1.8 m waves · 15 kn wind (5.7 ft waves · 15 kn wind)

Thu

0.9 m waves · 5 kn wind (3.0 ft waves · 5 kn wind)

Fri

0.3 m waves · 3 kn wind (0.9 ft waves · 3 kn wind)

Sat

0.1 m waves · 2 kn wind (0.4 ft waves · 2 kn wind)

Sun

0.5 m waves · 8 kn wind (1.6 ft waves · 8 kn wind)

Favorable windowModerate window— no window

Every forecast dive window each day, site-local time, from wave and wind forecasts. Numbers under each bar are daylight averages.

First light 6:36 · Sunrise 7:19 · Sunset 16:40 · some windows run past sunset

Source: Open-Meteo marine · model point 5.7 km from site · updated 26 Oct, 06:25 CET

Forecast only — always assess conditions on site.

Compare this weekend’s windows near Kosterhavet National Park

Recent diver reports

Dated firsthand observations from divers — not current conditions.

No diver reports for this site yet. — one dated observation helps every diver after you.

Dived here today — did the forecast match?

Best months, historically

What conditions have historically been typical at this site, month by month — not a forecast.

January, 62% of days have historically been favorable, water has typically been 4°C (39°F), waves have typically been 1.4 m (4.5 ft), wind has typically been 14 knots
February, 69% of days have historically been favorable, water has typically been 3°C (37°F), waves have typically been 1.1 m (3.7 ft), wind has typically been 13 knots
March, 78% of days have historically been favorable, water has typically been 4°C (39°F), waves have typically been 1.0 m (3.1 ft), wind has typically been 13 knots
April, 90% of days have historically been favorable, water has typically been 7°C (45°F), waves have typically been 0.7 m (2.2 ft), wind has typically been 11 knots
May, 92% of days have historically been favorable, water has typically been 12°C (54°F), waves have typically been 0.7 m (2.2 ft), wind has typically been 12 knots, historically most favorable
June, 81% of days have historically been favorable, water has typically been 17°C (62°F), waves have typically been 1.0 m (3.3 ft), wind has typically been 12 knots
July, 81% of days have historically been favorable, water has typically been 19°C (66°F), waves have typically been 1.0 m (3.3 ft), wind has typically been 11 knots
August, 78% of days have historically been favorable, water has typically been 19°C (66°F), waves have typically been 1.1 m (3.4 ft), wind has typically been 12 knots
September, 79% of days have historically been favorable, water has typically been 17°C (62°F), waves have typically been 0.9 m (3.1 ft), wind has typically been 12 knots
October, 69% of days have historically been favorable, water has typically been 13°C (55°F), waves have typically been 1.2 m (4.0 ft), wind has typically been 13 knots
November, 76% of days have historically been favorable, water has typically been 9°C (48°F), waves have typically been 1.1 m (3.6 ft), wind has typically been 12 knots
December, 63% of days have historically been favorable, water has typically been 5°C (42°F), waves have typically been 1.3 m (4.1 ft), wind has typically been 13 knots

May has typically had the largest share of favorable days here. Conditions vary year to year — this is historical context, not a forecast.

Based on 3 years of archive data. Bar height shows the share of days each month whose conditions have historically scored favorably.

Marine life recorded at this site

No recorded sightings data for this site yet. Species lists appear as GBIF records and diver reports accumulate.

Fills & rentals nearby

No dive shops mapped within 25 km (16 mi). Know one? Add it to the map.

Data updated July 2026

Site details

No description for this site yet — divers who know it can suggest one below.

boatdriftreefwall

No hazards recorded for this site yet — that never means there are none. Ask a local operator before you dive.

Reviews

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