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 20.01°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.

68.0

°F

July 16, 11:08

Trend:

stable

Yesterday:

68.1°F

Tomorrow:

68.2°F

Sunrise:

05:58

Sunset:

22:00

Day Length:

16 h. 2 min.

Boulogne-sur-Mer in July

Minimum:

44.4°F

Average:

48.6°F

Maximum:

51.6°F

Sea water temperature in Boulogne-sur-Mer today

As of now, in Boulogne-sur-Mer, the water temperature is 68.0°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 3.9°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 66.8°F on 2025, while the historical minimum was 62.0°F on 2016.

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. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 69.0°F, with minimum temperature starting at 68.2°F, while the maximum might reach 69.5°F.

Daily water temperature in Boulogne-sur-Mer

Date	Current Year actual* / forecast**	last year	10 years average
Jul 2	66.6°F	66.2°F	63.1°F
Jul 3	66.4°F	65.1°F	63.4°F
Jul 4	66.7°F	65.3°F	63.3°F
Jul 5	67.2°F	64.8°F	63.4°F
Jul 6	66.7°F	64.5°F	63.4°F
Jul 7	66.8°F	64.9°F	63.6°F
Jul 8	67.2°F	65.1°F	63.9°F
Jul 9	68.0°F	65.0°F	63.9°F
Jul 10	67.6°F	64.7°F	63.7°F
Jul 11	68.4°F	65.6°F	64.0°F
Jul 12	68.3°F	66.6°F	64.0°F
Jul 13	68.3°F	66.8°F	64.0°F
Jul 14	67.6°F	66.5°F	64.1°F
Jul 15	68.1°F	67.2°F	64.3°F
Jul 16	68.0°F	66.8°F	64.1°F
Jul 17	68.2°F	67.6°F	64.2°F
Jul 18	68.5°F	66.6°F	64.5°F
Jul 19	69.0°F	66.0°F	65.0°F
Jul 20	69.2°F	66.5°F	65.2°F
Jul 21	69.5°F	66.9°F	65.6°F
Jul 22	69.5°F	67.9°F	65.5°F
Jul 23	69.3°F	67.7°F	65.3°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 22, 2022, reaching a 70.1°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, 63.7°F in Summer, and 60.8°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Calais	70.4°F	19mi
Dunkerque	70.9°F	40mi
Canterbury	69.3°F	45mi

* current water temperature in this city

** straight line distance from Boulogne-sur-Mer