What is the current water temperature in Dumbarton?

Q: What is the current water temperature in Dumbarton?

As of now, in Dumbarton, the water temperature is 10.59°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.

United Kingdom > Dumbarton

Water temperature in Dumbarton

Detailed information about the current water temperature in Dumbarton. 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.

51.1

°F

May 15, 15:44

Trend:

stable

Yesterday:

51.0°F

Tomorrow:

51.0°F

Sunrise:

05:06

Sunset:

21:24

Day Length:

16 h. 18 min.

Dumbarton in May

Minimum:

46.6°F

Average:

47.1°F

Maximum:

47.9°F

Sea water temperature in Dumbarton today

As of now, in Dumbarton, the water temperature is 51.1°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 0.3°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 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 also falls within the range of the average temperature recorded for this date, suggesting a consistent weather trend. The maximum temperature recorded for this date was 54.4°F on 2025, while the historical minimum was 48.6°F on 2021.

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 51.5°F, with minimum temperature starting at 51.0°F, while the maximum might reach 52.2°F.

Daily water temperature in Dumbarton

Date	Current Year actual* / forecast**	last year	10 years average
May 1	50.5°F	50.3°F	48.7°F
May 2	50.3°F	50.4°F	48.7°F
May 3	50.1°F	50.9°F	48.8°F
May 4	50.4°F	51.0°F	49.0°F
May 5	50.8°F	51.0°F	49.1°F
May 6	50.8°F	51.1°F	49.2°F
May 7	50.8°F	50.9°F	49.3°F
May 8	50.7°F	50.8°F	49.4°F
May 9	50.5°F	51.5°F	49.7°F
May 10	50.7°F	51.5°F	49.7°F
May 11	51.3°F	51.7°F	49.8°F
May 12	51.4°F	51.7°F	49.9°F
May 13	51.2°F	53.3°F	50.2°F
May 14	51.0°F	53.8°F	50.4°F
May 15	51.1°F	54.4°F	50.7°F
May 16	51.0°F	53.7°F	50.6°F
May 17	51.0°F	53.3°F	50.7°F
May 18	51.2°F	53.6°F	50.9°F
May 19	51.4°F	53.2°F	51.1°F
May 20	51.7°F	53.0°F	51.3°F
May 21	52.1°F	53.9°F	51.7°F
May 22	52.2°F	54.1°F	51.9°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 Dumbarton by month

In an average year, Dumbarton offers no days when the water temperature is warm enough to swim comfortably.

The warmest water in Dumbarton was recorded on July 22, 2021, reaching a 62.5°F. While the coldest temperature occurred on March 14, 2016, dipping to 42.8°F. The average readings by season are 46.7°F in Winter, 47.4°F in Spring, 57.4°F in Summer, and 54.3°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Alexandria	51.0°F	3mi
Houston	51.1°F	5mi
Falkirk	51.0°F	31mi
Ayr	50.7°F	33mi
Fort William	49.3°F	64mi

* current water temperature in this city

** straight line distance from Dumbarton