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 19.08°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.

66.3

°F

September 24, 19:57

Trend:

stable

Yesterday:

66.1°F

Tomorrow:

66.3°F

Sunrise:

07:42

Sunset:

19:48

Day Length:

12 h. 6 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 66.3°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 1.9°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to stay about the same.

Recent sea temperature and forecast

Today's water temperature is slightly 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 66.3°F on 2023, while the historical minimum was 62.7°F on 2017.

latest data

last year

Over the last two weeks, the water temperature has stayed slightly above than historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 65.8°F, the minimum temperature may reach 65.3°F, and the maximum might stay at 66.3°F.

Daily water temperature in Boulogne-sur-Mer

Date	Current Year actual* / forecast**	last year	10 years average
Sep 10	67.6°F	66.6°F	66.3°F
Sep 11	67.5°F	66.2°F	66.2°F
Sep 12	67.4°F	66.1°F	65.9°F
Sep 13	67.5°F	65.7°F	65.9°F
Sep 14	67.4°F	64.9°F	65.8°F
Sep 15	67.1°F	64.5°F	65.6°F
Sep 16	67.2°F	64.2°F	65.5°F
Sep 17	67.1°F	64.5°F	65.5°F
Sep 18	66.8°F	64.2°F	65.3°F
Sep 19	66.3°F	64.0°F	65.1°F
Sep 20	66.3°F	64.5°F	65.1°F
Sep 21	65.9°F	64.3°F	65.0°F
Sep 22	65.7°F	64.4°F	64.8°F
Sep 23	66.1°F	64.0°F	64.7°F
Sep 24	66.3°F	63.7°F	64.5°F
Sep 25	66.3°F	63.6°F	64.5°F
Sep 26	66.2°F	63.5°F	64.3°F
Sep 27	65.9°F	62.5°F	64.1°F
Sep 28	65.7°F	62.1°F	63.8°F
Sep 29	65.7°F	62.5°F	63.8°F
Sep 30	65.4°F	62.1°F	63.6°F
Oct 1	65.3°F	62.1°F	63.5°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	66.1°F	19mi
Dunkerque	65.7°F	40mi
Canterbury	63.5°F	45mi

* current water temperature in this city

** straight line distance from Boulogne-sur-Mer