Ostrobothnia, Finland
Bothnian Sea63.12°N, 21.60°EStation FI-OST-ISO

Isolahden uimaranta Sea Water Temperature

A cool beach on the Bothnian Sea, warmest around August at about 16.7°C. Today's reading, 7-day forecast, and monthly averages below.

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

Isolahden uimaranta water temperature

13.5
56.3°FVery Cold (< 16°C)

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

+0°vs Sep avgBothnian Sea63.12°N, 21.60°E
Activity Index:SwimmingSnorkelingSurfingTypical conditions
Marine Atmosphere Grid Live Marine Feed
Coastal Air
15°C
59°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
13.5°C
56.3°F
Waves: 1m
Very Cold
ThuOct 1
13.8°C
56.8°F
Waves: 0.9m
Very Cold
FriOct 2
13.9°C
57°F
Waves: 0.7m
Very Cold
SatOct 3
13.8°C
56.8°F
Waves: 0.6m
Very Cold
SunOct 4
13.5°C
56.3°F
Waves: 0.7m
Very Cold
MonOct 5
13.2°C
55.8°F
Waves: 0.9m
Very Cold
TueOct 6
13.1°C
55.6°F
Waves: 1m
Very Cold
Forecast cooling trend: -0.4°C over 7 days at Isolahden uimaranta.
Confidence: High

Isolahden uimaranta Monthly Water Temperature Averages

Historical monthly climatology. The warmest water in Isolahden uimaranta occurs inJune, July, August, September — peaking at16.7°C (62.1°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)
1
Jan
0
Feb
0
Mar
1
Apr
5
May
11
Jun
15
Jul
17
Aug
Current
14
Sep
9
Oct
5
Nov
3
Dec
Full 12-month data table — min / avg / max & swimming comfort
MonthMin Water TempAverage Water TempMax Water TempSwimming Comfort
January-0.7°C0.7°C2.8°CVery Cold (< 16°C)
February-1°C-0.1°C1.1°CVery Cold (< 16°C)
March-0.9°C0.2°C1.2°CVery Cold (< 16°C)
April-0.2°C1.1°C3.4°CVery Cold (< 16°C)
May0.9°C5.1°C8.5°CVery Cold (< 16°C)
June6.5°C10.8°C17.3°CVery Cold (< 16°C)
July11.5°C15.2°C19.1°CVery Cold (< 16°C)
August13.5°C16.7°C19.4°CCool / Refreshing (16°C – 20°C)
SeptemberCurrent10.8°C13.5°C16.7°CVery Cold (< 16°C)
October4.6°C8.9°C13.8°CVery Cold (< 16°C)
November1°C5.3°C7.6°CVery Cold (< 16°C)
December1°C2.8°C5.5°CVery Cold (< 16°C)

Swimming FAQs for Isolahden uimaranta

Is the sea warm enough to swim in Isolahden uimaranta today?

Typical sea surface temperature in Isolahden uimaranta this time of year is 13.5°C (56.3°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 Isolahden uimaranta?

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

What is the typical water temperature in Isolahden uimaranta in September?

Historically in September, water temperatures in Isolahden uimaranta average around13.5°C (56.3°F), fluctuating between a recorded minimum of 10.8°C and a maximum of 16.7°C.

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