NOAA SATELLITE DATA (1991–2020 30-YEAR CLIMATOLOGY)
LV

Latvia Sea Temperature in September

Historical 30-year sea surface temperatures across 6 coastlines in Latvia for September. Derived from NOAA 0.25° blended satellite and in-situ marine observations.

Climatology Notice: Temperatures represent the 30-year long-term historical average (1991–2020 normal), not a live single-day sensor forecast.
15.6°C
Bracing / Crispaverage across 6 surveyed coastlines in Latvia, September
  • Ranges 15.0°C at Cape Kolka to 16.2°C at Jūrmala Beach (Majori).
  • No coastline in Latvia reaches 21°C in any month — this is wetsuit or cold-water swimming.
  • 2.8°C cooler than Latvia’s August peak of 18.5°C (see August).

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The September Thermal Lag Advantage

Because seawater has a high specific heat capacity, it acts as a massive thermal battery. Southern European and Mediterranean basins absorb solar energy all summer, reaching maximum heat storage by late August. In September, while air temperatures drop, the water releases heat slowly, which creates sea temperatures that are typically 3°C to 5°C warmer than in June.

CYPRUS (AYIA NAPA / PROTARAS)
27.5°C
Effortless swimming
TURKEY (ANTALYA / KAŞ)
27.3°C
Warm bathwater
GREECE (CRETE / RHODES)
25.4°C
Extended season
MALTA & GOZO
26.1°C
Crystal clear
Field Guides:October Swimming Guide November Swimming Guide

Latvia Beaches in September

Individual coordinate lookups from NOAA 0.25° marine grid.

Showing 6 coastlines
Liepāja Beach
#2 in September
15.8°C
Latvia flagLiepāja, Courland, Latvia
● Bracing / Crisp
NOAA Season Curve (May–Oct):
M
8.1°
J
12.7°
J
16.8°
A
18.1°
S
15.8°
O
12.2°
N
9.0°
View Full Beach Guide
White Dune Beach
#3 in September
15.6°C
Latvia flagSaulkrasti, Gulf of Riga, Latvia
● Bracing / Crisp
NOAA Season Curve (May–Oct):
M
8.3°
J
13.7°
J
17.9°
A
18.6°
S
15.6°
O
11.3°
N
7.6°
View Full Beach Guide
Jurmala Beach
#4 in September
15.6°C
Latvia flagJurmala, near Riga, Latvia
● Bracing / Crisp
NOAA Season Curve (May–Oct):
M
8.5°
J
13.8°
J
17.9°
A
18.6°
S
15.6°
O
11.3°
N
7.6°
View Full Beach Guide
Ventspils Beach
#5 in September
15.5°C
Latvia flagVentspils, Courland, Latvia
● Bracing / Crisp
NOAA Season Curve (May–Oct):
M
7.8°
J
12.5°
J
16.7°
A
18.0°
S
15.5°
O
11.7°
N
8.7°
View Full Beach Guide
Cape Kolka
#6 in September
15.0°C
Latvia flagKurzeme, Latvia
● Bracing / Crisp
NOAA Season Curve (May–Oct):
M
7.4°
J
12.8°
J
17.1°
A
18.0°
S
15.0°
O
10.8°
N
7.4°
View Full Beach Guide

Explore Sea Temperatures by Country

Spain(23.6°C)Italy(25.9°C)Turkey(27.3°C)France(22.4°C)Greece(25.4°C)Cyprus(27.7°C)Croatia(25.2°C)Albania(25.5°C)Montenegro(25.7°C)Malta(26.7°C)Bulgaria(25.1°C)Romania(24.7°C)Slovenia(25.4°C)Portugal(20.7°C)Poland(19°C)Sweden(18.3°C)Netherlands(18.5°C)Bosnia & Herzegovina(25.2°C)Monaco(24.6°C)Latvia(18.5°C)Estonia(18°C)Lithuania(18.8°C)Germany(18.6°C)Denmark(18°C)Norway(15.3°C)Belgium(18.7°C)Faroe Islands(10.9°C)United Kingdom(16.1°C)Ireland(15.9°C)Iceland(10.9°C)Finland(16.6°C)