Stockholm, Sweden
Sea of Åland59.22°N, 18.53°EStation SW-STO-STO

Stora Sandarna Sea Water Temperature

A cool beach on the Sea of Åland, warmest around August at about 17.5°C. Today's reading, 7-day forecast, and monthly averages below.

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Water Temperature NowBuoy & Sentinel-3 SST

Stora Sandarna water temperature

14.2
57.6°FVery Cold (< 16°C)

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

+0°vs Sep avgSea of Åland59.22°N, 18.53°E
Activity Index:SwimmingSnorkelingSurfingTypical conditions
Marine Atmosphere Grid Live Marine Feed
Coastal Air
16°C
60.3°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
14.2°C
57.6°F
Waves: 1m
Very Cold
ThuOct 1
14.5°C
58.1°F
Waves: 0.9m
Very Cold
FriOct 2
14.6°C
58.3°F
Waves: 0.7m
Very Cold
SatOct 3
14.5°C
58.1°F
Waves: 0.6m
Very Cold
SunOct 4
14.2°C
57.6°F
Waves: 0.7m
Very Cold
MonOct 5
13.9°C
57°F
Waves: 0.9m
Very Cold
TueOct 6
13.8°C
56.8°F
Waves: 1m
Very Cold
Forecast cooling trend: -0.4°C over 7 days at Stora Sandarna.
Confidence: High

Stora Sandarna Monthly Water Temperature Averages

Historical monthly climatology. The warmest water in Stora Sandarna occurs inJune, July, August, September — peaking at17.5°C (63.5°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)
3
Jan
2
Feb
2
Mar
3
Apr
7
May
12
Jun
17
Jul
18
Aug
Current
14
Sep
11
Oct
7
Nov
5
Dec
Full 12-month data table — min / avg / max & swimming comfort
MonthMin Water TempAverage Water TempMax Water TempSwimming Comfort
January0.7°C3.4°C7.6°CVery Cold (< 16°C)
February0.1°C1.9°C4.1°CVery Cold (< 16°C)
March0.2°C1.9°C5.1°CVery Cold (< 16°C)
April1°C3.4°C6.1°CVery Cold (< 16°C)
May3.5°C6.9°C11.7°CVery Cold (< 16°C)
June8.5°C12°C16°CVery Cold (< 16°C)
July12.9°C16.5°C21.5°CCool / Refreshing (16°C – 20°C)
August15.2°C17.5°C21.3°CCool / Refreshing (16°C – 20°C)
SeptemberCurrent10°C14.2°C16.6°CVery Cold (< 16°C)
October7.9°C10.7°C13.8°CVery Cold (< 16°C)
November5.1°C7.4°C9.9°CVery Cold (< 16°C)
December3.6°C5.3°C7.2°CVery Cold (< 16°C)

Swimming FAQs for Stora Sandarna

Is the sea warm enough to swim in Stora Sandarna today?

Typical sea surface temperature in Stora Sandarna this time of year is 14.2°C (57.6°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 Stora Sandarna?

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

What is the typical water temperature in Stora Sandarna in September?

Historically in September, water temperatures in Stora Sandarna average around14.2°C (57.6°F), fluctuating between a recorded minimum of 10°C and a maximum of 16.6°C.

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