Caspian Sea Water Temperature Today & Regional Overview

Current Water Temperature

The water temperature in the Caspian Sea today ranges from 18.8°C (Mahachkala, Russia) to 23.3°C (Astara, Azerbaijan).

As of today, the minimum water temperature in the Caspian Sea ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming.

It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.

Water Temperature and Swimming Conditions Throughout the Year

Month	Min	Max
January	2°C	14°C
February	2°C	11°C
March	2°C	15°C
April	6°C	19°C
May	10°C	25°C
June	17°C	30°C
July	22°C	30°C
August	20°C	30°C
September	18°C	29°C
October	13°C	25°C
November	7°C	22°C
December	3°C	18°C

The Caspian Sea’s water temperature varies widely by season and by region because the northern basin is shallow and the southern basin is deeper and influenced by milder climates. In winter, surface temperatures can fall to around -1 to 2°C in the northern parts where ice can form, while central areas typically range from 0 to 6°C and the southern coast remains milder at roughly 5 to 10°C. During spring the sea warms to roughly 5 to 12°C in the north, 8 to 15°C in central zones, and 10 to 18°C in the south. Summer brings the warmest conditions: northern coastal waters often reach about 20 to 28°C, central parts range near 22 to 26°C, and southern waters can climb to approximately 26 to 30°C. In autumn temperatures fall back toward 10 to 16°C in the north, 12 to 20°C centrally, and 15 to 22°C in the south.

Swimming Conditions

Swimming in the Caspian Sea is generally allowed, but whether it is comfortable or advisable depends on time of year and location. Most recreational swimming is concentrated in summer when surface temperatures are warmest; the southern coast offers the longest and most reliable season. Northern bathing is seasonal and can be brief because of low summer highs and possible winter ice. Local hazards such as pollution near river deltas and industrial ports, sudden winds and waves, strong boat traffic, and the varying availability of lifeguards or monitoring mean swimmers should heed local advisories. The Caspian’s lower salinity compared with open oceans slightly reduces buoyancy but does not prevent swimming. Checking recent water-quality reports and weather conditions will help determine when and where swimming is safe.

Popular Resorts with the Warmest Water Today