Saint Petersburg — Water Temperature in July

Water Temperature Range

13°C

minimum

20°C

average

25°C

maximum

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Water Temperature Chart for Month

The chart shows the average daily water temperature for each day of the month based on historical data.

Table of Water Temperatures by Day of the Month for Previous Years

Day	2025	2024	2023	2022
JUL 1	19°C	16°C	20°C	19°C
JUL 2	17°C	16°C	21°C	19°C
JUL 3	18°C	16°C	20°C	18°C
JUL 4	19°C	16°C	21°C	18°C
JUL 5	19°C	16°C	20°C	18°C
JUL 6	18°C	16°C	21°C	18°C
JUL 7	18°C	17°C	22°C	18°C
JUL 8	19°C	17°C	20°C	19°C
JUL 9	18°C	17°C	21°C	19°C
JUL 10	19°C	17°C	21°C	19°C
JUL 11	20°C	17°C	23°C	19°C
JUL 12	19°C	17°C	22°C	19°C
JUL 13	20°C	17°C	22°C	19°C
JUL 14	21°C	17°C	23°C	19°C
JUL 15	18°C	18°C	23°C	19°C
JUL 16	18°C	18°C	24°C	14°C
JUL 17	21°C	20°C	24°C	19°C
JUL 18	21°C	20°C	23°C	19°C
JUL 19	22°C	20°C	23°C	19°C
JUL 20	22°C	20°C	23°C	19°C
JUL 21	19°C	20°C	23°C	20°C
JUL 22	20°C	21°C	22°C	21°C
JUL 23	22°C	20°C	23°C	20°C
JUL 24	22°C	20°C	22°C	20°C
JUL 25	21°C	21°C	22°C	20°C
JUL 26	22°C	21°C	23°C	20°C
JUL 27	20°C	22°C	21°C	19°C
JUL 28	21°C	23°C	22°C	19°C
JUL 29	22°C	23°C	21°C	20°C
JUL 30	21°C	23°C	22°C	20°C
JUL 31	21°C	23°C	22°C	20°C

July: Climate and Swimming Opportunities

Average Night Air Temperature

13°C

Average Day Air Temperature

22°C

Precipitation Amount per Month

64 mm

Number of Rainy Days

Daylight per Day

18 hrs

Sunshine per Day

8 hrs

Average Wind Speed

9 km/h

Average Humidity

70%

With such a ratio between the average monthly temperatures of water and air, swimming feels warm and comfortable even if the day isn’t hot. The water can feel warmer than the air, so getting out may feel a bit cool.