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 7.01°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.

44.6

°F

January 8, 14:44

Trend:

stable

Yesterday:

44.4°F

Tomorrow:

44.5°F

Sunrise:

08:54

Sunset:

17:07

Day Length:

8 h. 13 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 44.6°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 4.0°F lower 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 fall a bit.

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 minimum temperature for this date. The maximum temperature recorded for this date was 51.8°F on 2016, while the historical minimum was 46.3°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 43.9°F, the minimum temperature may reach 43.6°F, and the maximum might stay at 44.5°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	48.6°F
Jan 9	44.5°F	46.6°F	48.4°F
Jan 10	44.2°F	47.3°F	48.1°F
Jan 11	44.1°F	46.6°F	48.1°F
Jan 12	43.9°F	46.3°F	47.9°F
Jan 13	43.8°F	46.1°F	47.7°F
Jan 14	43.6°F	46.0°F	47.5°F
Jan 15	43.6°F	46.0°F	47.6°F
Dec 25	49.9°F	48.9°F	49.5°F
Dec 26	48.6°F	48.5°F	49.3°F
Dec 27	47.9°F	48.1°F	49.2°F
Dec 28	47.7°F	48.0°F	49.0°F
Dec 29	47.8°F	48.2°F	49.2°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	42.9°F	19mi
Dunkerque	42.5°F	40mi
Canterbury	39.7°F	45mi

* current water temperature in this city

** straight line distance from Boulogne-sur-Mer