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 21.52°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.

70.7

°F

August 13, 13:26

Trend:

stable

Yesterday:

70.1°F

Tomorrow:

70.6°F

Sunrise:

06:38

Sunset:

21:18

Day Length:

14 h. 40 min.

Boulogne-sur-Mer in August

Minimum:

44.6°F

Average:

48.2°F

Maximum:

51.8°F

Sea water temperature in Boulogne-sur-Mer today

As of now, in Boulogne-sur-Mer, the water temperature is 70.7°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 4.2°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

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 69.7°F on 2022, while the historical minimum was 64.1°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. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 70.9°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
Jul 30	69.9°F	67.1°F	66.5°F
Jul 31	70.0°F	68.2°F	66.5°F
Aug 1	70.2°F	67.6°F	66.4°F
Aug 2	69.6°F	67.2°F	66.3°F
Aug 3	69.8°F	66.9°F	66.4°F
Aug 4	70.3°F	66.8°F	66.5°F
Aug 5	71.1°F	66.3°F	66.6°F
Aug 6	71.1°F	67.5°F	66.9°F
Aug 7	70.3°F	67.4°F	66.6°F
Aug 8	70.3°F	67.3°F	66.6°F
Aug 9	69.8°F	67.2°F	66.5°F
Aug 10	70.5°F	67.4°F	66.7°F
Aug 11	69.9°F	67.3°F	66.6°F
Aug 12	70.1°F	68.6°F	66.8°F
Aug 13	70.7°F	68.2°F	66.5°F
Aug 14	70.6°F	67.6°F	66.4°F
Aug 15	70.8°F	68.6°F	66.6°F
Aug 16	71.1°F	69.2°F	66.9°F
Aug 17	70.9°F	67.8°F	66.7°F
Aug 18	71.0°F	68.0°F	66.7°F
Aug 19	70.9°F	68.3°F	66.7°F
Aug 20	71.0°F	68.0°F	66.8°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 6, 2026, reaching a 71.1°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, 63.8°F in Summer, and 60.8°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Calais	71.2°F	19mi
Dunkerque	70.9°F	40mi
Canterbury	68.9°F	45mi

* current water temperature in this city

** straight line distance from Boulogne-sur-Mer