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 7.5°C. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration.

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.

45.5

°F

January 13, 00:32

Trend:

decreasing

Yesterday:

45.6°F

Tomorrow:

45.3°F

Sunrise:

08:51

Sunset:

17:14

Day Length:

8 h. 23 min.

Boulogne-sur-Mer in January

Minimum:

47.2°F

Average:

49.2°F

Maximum:

52.4°F

Sea water temperature in Boulogne-sur-Mer today

As of now, in Boulogne-sur-Mer, the water temperature is 45.5°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration. Today's reading is 2.2°F lower 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 fall a bit.

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 minimum temperature for this date. The maximum temperature recorded for this date was 50.8°F on 2016, while the historical minimum was 46.1°F on 2025.

latest data

last year

Observations from the last two weeks indicate that the water temperature was in proximity to the lowest values recorded on those days in the past. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 45.0°F, the minimum temperature may reach 44.6°F, and the maximum might stay at 45.3°F.

Daily water temperature in Boulogne-sur-Mer

Date	Current Year actual* / forecast**	last year	10 years average
Jan 1	47.2°F	48.4°F	49.2°F
Jan 2	47.0°F	48.6°F	49.3°F
Jan 3	46.1°F	47.8°F	48.9°F
Jan 4	44.6°F	47.3°F	48.7°F
Jan 5	44.0°F	47.5°F	48.7°F
Jan 6	43.9°F	47.7°F	48.8°F
Jan 7	44.4°F	47.8°F	48.6°F
Jan 8	44.6°F	46.3°F	48.2°F
Jan 9	45.1°F	46.6°F	48.1°F
Jan 10	45.4°F	47.3°F	47.9°F
Jan 11	45.4°F	46.6°F	47.8°F
Jan 12	45.6°F	46.3°F	47.9°F
Jan 13	45.5°F	46.1°F	47.7°F
Jan 14	45.3°F	46.0°F	47.5°F
Jan 15	45.3°F	46.0°F	47.6°F
Jan 16	45.1°F	45.9°F	47.3°F
Jan 17	45.1°F	46.5°F	47.3°F
Jan 18	44.9°F	46.7°F	47.1°F
Jan 19	44.8°F	47.0°F	47.0°F
Jan 20	44.6°F	46.9°F	46.8°F
Dec 30	47.8°F	48.4°F	49.0°F
Dec 31	47.9°F	48.5°F	49.0°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 47.9°F in Winter, 49.9°F in Spring, 63.6°F in Summer, and 60.8°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Calais	43.9°F	19mi
Dunkerque	42.8°F	40mi
Canterbury	40.3°F	45mi

* current water temperature in this city

** straight line distance from Boulogne-sur-Mer