What is the current water temperature in Petersburg?

Q: What is the current water temperature in Petersburg?

As of now, in Petersburg, the water temperature is 7.3°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration.

United States > Petersburg

Water temperature in Petersburg

Detailed information about the current water temperature in Petersburg. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.

45.1

°F

October 10, 10:37

Trend:

stable

Yesterday:

45.1°F

Tomorrow:

45.0°F

Sunrise:

07:14

Sunset:

18:03

Day Length:

10 h. 49 min.

Petersburg in October

Minimum:

38.3°F

Average:

40.8°F

Maximum:

41.9°F

Sea water temperature in Petersburg today

As of now, in Petersburg, the water temperature is 45.1°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration. Today's reading is 0.8°F lower than the average recorded on this particular day in recent years. The sea temperature remains approximately unchanged from yesterday. According to the forecast, we expect the temperature to fall a bit.

Recent sea temperature and forecast

Today's water temperature is considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It also falls within the range of the average temperature recorded for this date, suggesting a consistent weather trend. The maximum temperature recorded for this date was 47.3°F on 2022, while the historical minimum was 44.3°F on 2024.

latest data

last year

The water temperature over the last two weeks displayed soome variability. While the two week average stayed close to the historical average, there were some days when the temperature was close to the histoorical minimum and others when it was close to the historical maximum. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 45.0°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Petersburg

Date	Current Year actual* / forecast**	last year	10 years average
Sep 26	49.6°F	48.1°F	49.1°F
Sep 27	49.7°F	47.8°F	49.0°F
Sep 28	49.7°F	47.9°F	49.0°F
Sep 29	49.6°F	47.6°F	48.8°F
Sep 30	49.4°F	45.6°F	48.4°F
Oct 1	49.1°F	45.9°F	48.0°F
Oct 2	48.9°F	46.0°F	47.8°F
Oct 3	46.1°F	45.7°F	47.2°F
Oct 4	46.7°F	45.6°F	47.0°F
Oct 5	45.9°F	43.5°F	46.5°F
Oct 6	45.8°F	43.8°F	46.1°F
Oct 7	45.9°F	44.1°F	46.1°F
Oct 8	46.0°F	44.0°F	46.0°F
Oct 9	45.1°F	44.2°F	45.9°F
Oct 10	45.1°F	44.3°F	46.0°F
Oct 11	45.0°F	44.1°F	45.8°F
Oct 12	45.0°F	44.0°F	45.8°F
Oct 13	45.0°F	44.4°F	45.8°F
Oct 14	45.0°F	44.5°F	45.8°F
Oct 15	45.1°F	45.4°F	45.9°F
Oct 16	45.0°F	45.4°F	45.9°F
Oct 17	45.0°F	45.4°F	45.8°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Sea water temperature in Petersburg by month

In an average year, Petersburg offers no days when the water temperature is warm enough to swim comfortably.

The warmest water in Petersburg was recorded on July 7, 2019, reaching a 60.2°F. While the coldest temperature occurred on January 13, 2023, dipping to 37.5°F. The average readings by season are 41.1°F in Winter, 43.1°F in Spring, 53.1°F in Summer, and 46.4°F in Autumn.