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 15.12°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.

59.2

°F

September 4, 20:04

Trend:

stable

Yesterday:

59.4°F

Tomorrow:

59.2°F

Sunrise:

06:28

Sunset:

20:06

Day Length:

13 h. 38 min.

Dumbarton in September

Minimum:

46.6°F

Average:

47.0°F

Maximum:

47.3°F

Sea water temperature in Dumbarton today

As of now, in Dumbarton, the water temperature is 59.2°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 1.0°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

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 59.9°F on 2025, while the historical minimum was 57.5°F on 2018.

latest data

last year

The water temperature over the last two weeks displayed soome variability. While the two week average stayed close to the historical average, there were some days when the temperature was close to the maximum recorded over the past years. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 59.0°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Dumbarton

Date	Current Year actual* / forecast**	last year	10 years average
Aug 21	60.3°F	61.8°F	59.7°F
Aug 22	60.3°F	61.3°F	59.7°F
Aug 23	60.3°F	61.0°F	59.6°F
Aug 24	60.3°F	61.9°F	59.8°F
Aug 25	60.8°F	61.0°F	59.7°F
Aug 26	60.3°F	60.7°F	59.5°F
Aug 27	60.9°F	60.0°F	59.3°F
Aug 28	60.5°F	59.5°F	58.9°F
Aug 29	60.0°F	59.7°F	58.9°F
Aug 30	59.7°F	59.4°F	58.7°F
Aug 31	59.6°F	59.4°F	58.5°F
Sep 1	59.4°F	60.4°F	58.6°F
Sep 2	59.1°F	60.1°F	58.5°F
Sep 3	59.4°F	60.2°F	58.4°F
Sep 4	59.2°F	59.9°F	58.2°F
Sep 5	59.2°F	59.4°F	58.2°F
Sep 6	59.3°F	59.3°F	58.4°F
Sep 7	59.2°F	59.1°F	58.3°F
Sep 8	59.1°F	59.2°F	58.1°F
Sep 9	58.9°F	59.2°F	57.9°F
Sep 10	58.7°F	58.7°F	57.8°F
Sep 11	58.5°F	58.5°F	57.6°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, 57.5°F in Summer, and 54.3°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Alexandria	59.2°F	3mi
Houston	59.2°F	5mi
Falkirk	59.2°F	31mi
Ayr	59.5°F	33mi
Fort William	57.3°F	64mi

* current water temperature in this city

** straight line distance from Dumbarton