What is the current water temperature in Saint Peter Port?

Q: What is the current water temperature in Saint Peter Port?

As of now, in Saint Peter Port, the water temperature is 13.78°C. 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.

Guernsey > Saint Peter Port

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.

56.8

°F

June 17, 23:54

Trend:

stable

Yesterday:

56.8°F

Tomorrow:

56.8°F

Sunrise:

05:03

Sunset:

21:19

Day Length:

16 h. 16 min.

Saint Peter Port in June

Minimum:

51.4°F

Average:

52.6°F

Maximum:

53.6°F

Sea water temperature in Saint Peter Port today

As of now, in Saint Peter Port, the water temperature is 56.8°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 0.3°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 stay about the same.

Recent sea temperature and forecast

Today's water temperature slightly varies from the average of the past two weeks. It also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 58.2°F on 2025, while the historical minimum was 56.1°F on 2019.

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. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 57.3°F, with minimum temperature starting at 56.8°F, while the maximum might reach 57.7°F.

Daily water temperature in Saint Peter Port

Date	Current Year actual* / forecast**	last year	10 years average
Jun 3	57.1°F	56.5°F	55.6°F
Jun 4	56.6°F	57.1°F	55.7°F
Jun 5	56.6°F	56.8°F	55.8°F
Jun 6	56.5°F	56.2°F	55.8°F
Jun 7	57.2°F	56.2°F	55.9°F
Jun 8	57.2°F	56.4°F	55.9°F
Jun 9	57.1°F	56.7°F	56.2°F
Jun 10	56.9°F	56.6°F	56.1°F
Jun 11	56.8°F	57.3°F	56.2°F
Jun 12	56.5°F	57.9°F	56.5°F
Jun 13	54.9°F	57.6°F	56.4°F
Jun 14	56.9°F	57.4°F	56.5°F
Jun 15	57.3°F	57.8°F	56.8°F
Jun 16	56.8°F	58.3°F	56.8°F
Jun 17	56.8°F	58.2°F	57.1°F
Jun 18	56.8°F	58.0°F	57.1°F
Jun 19	56.9°F	58.6°F	57.3°F
Jun 20	57.3°F	59.6°F	57.7°F
Jun 21	57.4°F	60.2°F	57.8°F
Jun 22	57.4°F	59.5°F	57.7°F
Jun 23	57.6°F	58.8°F	58.0°F
Jun 24	57.7°F	59.2°F	58.1°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, 60.1°F in Summer, and 60.9°F in Autumn.