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 18.28°C. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it.

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.

64.9

°F

September 10, 08:30

Trend:

decreasing

Yesterday:

65.1°F

Tomorrow:

64.8°F

Sunrise:

06:38

Sunset:

19:35

Day Length:

12 h. 57 min.

Saint Peter Port in September

Minimum:

50.7°F

Average:

52.1°F

Maximum:

53.7°F

Sea water temperature in Saint Peter Port today

As of now, in Saint Peter Port, the water temperature is 64.9°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 1.4°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 stay about the same.

Recent sea temperature and forecast

Today's water temperature slightly varies from the average of the past two weeks. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 65.3°F on 2023, while the historical minimum was 62.7°F on 2021.

latest data

last year

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. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 64.7°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Saint Peter Port

Date	Current Year actual* / forecast**	last year	10 years average
Aug 27	65.1°F	64.3°F	63.5°F
Aug 28	65.0°F	63.9°F	63.6°F
Aug 29	65.1°F	64.1°F	63.7°F
Aug 30	65.1°F	64.0°F	63.6°F
Aug 31	64.8°F	64.4°F	63.5°F
Sep 1	65.0°F	64.3°F	63.6°F
Sep 2	64.7°F	64.2°F	63.6°F
Sep 3	64.4°F	63.8°F	63.6°F
Sep 4	64.0°F	64.1°F	63.6°F
Sep 5	64.5°F	63.8°F	63.6°F
Sep 6	65.0°F	64.0°F	63.7°F
Sep 7	65.6°F	63.8°F	63.7°F
Sep 8	65.2°F	64.0°F	63.7°F
Sep 9	65.1°F	64.1°F	63.7°F
Sep 10	64.9°F	63.9°F	63.6°F
Sep 11	64.8°F	63.6°F	63.4°F
Sep 12	64.8°F	63.4°F	63.5°F
Sep 13	64.8°F	63.2°F	63.4°F
Sep 14	64.8°F	63.0°F	63.4°F
Sep 15	64.8°F	63.2°F	63.4°F
Sep 16	64.6°F	62.9°F	63.2°F
Sep 17	64.5°F	62.8°F	63.2°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 7, 2026, reaching a 65.6°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.