All data are in degrees Fahrenheit

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Water temperature in Saint Peter Port

Detailed information about the current water temperature in Saint Peter Port. 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.
Sea temperature in Saint Peter Port now

63.5

°F

July 30, 03:03

Trend:

stable

Yesterday:

63.6°F

Tomorrow:

63.6°F

Sunrise:

05:38

Sunset:

20:54

Day Length:

15 h. 16 min.

Saint Peter Port in August

Minimum:

50.7°F

Average:

52.3°F

Maximum:

53.8°F

Sea water temperature in Saint Peter Port today

As of now, in Saint Peter Port, the water temperature is 63.5°F. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it. Today's reading is 1.8°F higher 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 rise a bit.

Recent sea temperature and forecast

The water temperature today is above average for the last two weeks, showing a small increase in temperature. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 62.7°F on 2025, while the historical minimum was 59.6°F on 2021.

Observations from the last two weeks indicate that the water temperature was in proximity to the highest values recorded on those days in the past. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 63.9°F, with minimum temperature starting at 63.6°F, while the maximum might reach 64.2°F.

Daily water temperature in Saint Peter Port

Date Current Year

actual* / forecast**

last year 10 years average
Jul 16 62.0°F 61.7°F 60.7°F
Jul 17 61.7°F 60.4°F 60.7°F
Jul 18 62.2°F 61.6°F 61.0°F
Jul 19 62.5°F 61.9°F 61.2°F
Jul 20 62.4°F 62.0°F 61.4°F
Jul 21 62.5°F 62.2°F 61.5°F
Jul 22 62.2°F 62.0°F 61.4°F
Jul 23 62.6°F 62.1°F 61.4°F
Jul 24 62.7°F 62.5°F 61.6°F
Jul 25 63.6°F 62.1°F 62.0°F
Jul 26 63.9°F 62.3°F 61.9°F
Jul 27 63.8°F 62.5°F 62.0°F
Jul 28 63.6°F 62.7°F 61.9°F
Jul 29 63.6°F 62.9°F 61.8°F
Jul 30 63.5°F 62.7°F 61.7°F
Jul 31 63.6°F 63.1°F 61.9°F
Aug 1 63.8°F 63.1°F 62.0°F
Aug 2 63.8°F 63.3°F 62.1°F
Aug 3 63.9°F 63.7°F 62.2°F
Aug 4 64.0°F 62.3°F 62.2°F
Aug 5 64.2°F 63.3°F 62.5°F
Aug 6 64.2°F 63.3°F 62.4°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 Saint Peter Port by month

In an average year, Saint Peter Port offers no days when the water temperature is warm enough to swim comfortably.
The warmest water in Saint Peter Port was recorded on September 9, 2023, reaching a 65.4°F. While the coldest temperature occurred on March 22, 2018, dipping to 46.8°F. The average readings by season are 52.0°F in Winter, 51.2°F in Spring, 60.2°F in Summer, and 60.9°F in Autumn.