What is the current water temperature in Boulogne-sur-Mer?

Q: What is the current water temperature in Boulogne-sur-Mer?

As of now, in Boulogne-sur-Mer, the water temperature is 20.43°C. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool.

France > Boulogne-sur-Mer

Water temperature in Boulogne-sur-Mer

Detailed information about the current water temperature in Boulogne-sur-Mer. 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.

68.8

°F

August 27, 15:01

Trend:

stable

Yesterday:

69.4°F

Tomorrow:

68.9°F

Sunrise:

06:59

Sunset:

20:50

Day Length:

13 h. 51 min.

Boulogne-sur-Mer in September

Minimum:

45.1°F

Average:

48.1°F

Maximum:

51.4°F

Sea water temperature in Boulogne-sur-Mer today

As of now, in Boulogne-sur-Mer, the water temperature is 68.8°F. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool. Today's reading is 2.1°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 is considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 68.9°F on 2022, while the historical minimum was 64.8°F on 2017.

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 68.6°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Boulogne-sur-Mer

Date	Current Year actual* / forecast**	last year	10 years average
Aug 13	70.7°F	68.2°F	67.0°F
Aug 14	71.0°F	67.6°F	66.8°F
Aug 15	70.8°F	68.6°F	67.0°F
Aug 16	70.8°F	69.2°F	67.2°F
Aug 17	70.0°F	67.8°F	67.0°F
Aug 18	71.5°F	68.0°F	67.2°F
Aug 19	71.4°F	68.3°F	67.1°F
Aug 20	71.4°F	68.0°F	67.2°F
Aug 21	71.0°F	67.5°F	67.3°F
Aug 22	70.2°F	67.6°F	67.0°F
Aug 23	69.8°F	67.5°F	67.0°F
Aug 24	69.2°F	67.2°F	67.0°F
Aug 25	69.0°F	66.8°F	66.8°F
Aug 26	69.4°F	67.7°F	66.9°F
Aug 27	68.8°F	67.6°F	66.7°F
Aug 28	68.9°F	67.6°F	66.8°F
Aug 29	68.9°F	67.9°F	66.8°F
Aug 30	68.7°F	67.3°F	66.6°F
Aug 31	68.5°F	67.2°F	66.4°F
Sep 1	68.4°F	66.7°F	66.3°F
Sep 2	68.5°F	66.8°F	66.4°F
Sep 3	68.3°F	66.6°F	66.2°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 Boulogne-sur-Mer by month

In an average year, Boulogne-sur-Mer offers no days when the water temperature is warm enough to swim comfortably.

The warmest water in Boulogne-sur-Mer was recorded on August 18, 2026, reaching a 71.5°F. While the coldest temperature occurred on February 19, 2021, dipping to 41.6°F. The average readings by season are 47.8°F in Winter, 50.1°F in Spring, 63.9°F in Summer, and 60.8°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Calais	69.7°F	19mi
Dunkerque	68.4°F	40mi
Canterbury	68.3°F	45mi

* current water temperature in this city

** straight line distance from Boulogne-sur-Mer