Telemark, Norway
Skagerrak58.87°N, 9.41°EStation NO-TEL-GUN

Gunnarsholmen Sea Water Temperature

A cool beach on the Skagerrak, warmest around August at about 18.1°C. Today's reading, 7-day forecast, and monthly averages below.

Live readings · auto-updating
Water Temperature NowBuoy & Sentinel-3 SST

Gunnarsholmen water temperature

15.6
60.1°FVery Cold (< 16°C)

Wetsuit strongly recommended. Sudden entry may cause cold shock. Suitable only for brief, brisk plunges.

+0°vs Sep avgSkagerrak58.87°N, 9.41°E
Activity Index:SwimmingSnorkelingSurfingTypical conditions
Marine Atmosphere Grid Live Marine Feed
Coastal Air
17°C
62.8°F onshore
Wind Speed
12 km/h
Surface wind
Wave Height
0.8 m
Slight shore chop
Swell
0.6 m
Deep water swell
Wave Period
6 s
Peak interval
UV Index
—
Daily maximum
Sunrise
—
First morning light
Sunset
—
Golden hour close

7-Day Water Temperature Forecast

Open-Meteo ocean model
Today
WedSep 30
15.6°C
60.1°F
Waves: 1m
Very Cold
ThuOct 1
15.9°C
60.6°F
Waves: 0.9m
Very Cold
FriOct 2
16°C
60.8°F
Waves: 0.7m
Refreshing
SatOct 3
15.9°C
60.6°F
Waves: 0.6m
Very Cold
SunOct 4
15.6°C
60.1°F
Waves: 0.7m
Very Cold
MonOct 5
15.3°C
59.5°F
Waves: 0.9m
Very Cold
TueOct 6
15.2°C
59.4°F
Waves: 1m
Very Cold
Forecast cooling trend: -0.4°C over 7 days at Gunnarsholmen.
Confidence: High

Gunnarsholmen Monthly Water Temperature Averages

Historical monthly climatology. The warmest water in Gunnarsholmen occurs inJune, July, August, September — peaking at18.1°C (64.6°F) in August.

Year-Round Water Temperature Curve (°C / °F)

Hover a bar for details
Current month Comfortable (20–24°C) Warm (24°C+) Cool (<20°C)
5
Jan
3
Feb
4
Mar
6
Apr
11
May
15
Jun
17
Jul
18
Aug
Current
16
Sep
13
Oct
9
Nov
7
Dec
Full 12-month data table — min / avg / max & swimming comfort
MonthMin Water TempAverage Water TempMax Water TempSwimming Comfort
January-0.2°C4.7°C7.1°CVery Cold (< 16°C)
February-0.6°C3.4°C6.1°CVery Cold (< 16°C)
March0.1°C3.5°C6.5°CVery Cold (< 16°C)
April4°C6.3°C9.7°CVery Cold (< 16°C)
May7.7°C11°C18°CVery Cold (< 16°C)
June12.4°C15°C17.6°CVery Cold (< 16°C)
July15.3°C17.4°C21°CCool / Refreshing (16°C – 20°C)
August16.1°C18.1°C21.2°CCool / Refreshing (16°C – 20°C)
SeptemberCurrent12.8°C15.6°C17.8°CVery Cold (< 16°C)
October10°C12.6°C15.7°CVery Cold (< 16°C)
November7.1°C9.4°C11.8°CVery Cold (< 16°C)
December2.6°C6.7°C9.5°CVery Cold (< 16°C)

Swimming FAQs for Gunnarsholmen

Is the sea warm enough to swim in Gunnarsholmen today?

Typical sea surface temperature in Gunnarsholmen this time of year is 15.6°C (60.1°F) — classified as Very Cold (< 16°C). Wetsuit strongly recommended. Sudden entry may cause cold shock. Suitable only for brief, brisk plunges. Live readings load automatically.

What are the warmest months for swimming in Gunnarsholmen?

The highest water temperatures in Gunnarsholmen typically occur duringJune, July, August, September, when monthly averages reach peak seasonal levels.

What is the typical water temperature in Gunnarsholmen in September?

Historically in September, water temperatures in Gunnarsholmen average around15.6°C (60.1°F), fluctuating between a recorded minimum of 12.8°C and a maximum of 17.8°C.

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