All data are in degrees Fahrenheit


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.
Sea temperature in Dumbarton now



July 14, 06:12











Day Length:

17 h. 2 min.

Dumbarton in July







Sea water temperature in Dumbarton today

As of now, in Dumbarton, the water temperature is 56.6°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 0.5°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 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 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 58.6°F on 2023, while the historical minimum was 55.7°F on 2015.

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 57.5°F, with minimum temperature starting at 56.7°F, while the maximum might reach 58.0°F.

Daily water temperature in Dumbarton

Date Current Year

actual* / forecast**

last year 10 years average
Jun 30 56.9°F 58.4°F 56.4°F
Jul 1 56.8°F 58.3°F 56.7°F
Jul 2 56.8°F 59.0°F 56.8°F
Jul 3 56.9°F 59.1°F 56.8°F
Jul 4 56.9°F 59.4°F 57.0°F
Jul 5 56.7°F 59.1°F 57.1°F
Jul 6 56.5°F 58.9°F 57.1°F
Jul 7 56.7°F 58.6°F 57.0°F
Jul 8 57.3°F 60.0°F 57.1°F
Jul 9 57.8°F 59.5°F 57.2°F
Jul 10 57.4°F 59.4°F 57.1°F
Jul 11 57.0°F 58.6°F 57.0°F
Jul 12 56.7°F 58.6°F 56.9°F
Jul 13 56.4°F 58.7°F 56.9°F
Jul 14 56.6°F 58.6°F 57.1°F
Jul 15 56.7°F 58.6°F 57.2°F
Jul 16 57.0°F 58.9°F 57.6°F
Jul 17 57.3°F 59.2°F 57.8°F
Jul 18 57.4°F 59.1°F 57.9°F
Jul 19 57.7°F 59.5°F 58.2°F
Jul 20 58.0°F 60.1°F 58.6°F
Jul 21 58.0°F 59.8°F 58.5°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, 2015, dipping to 42.5°F. The average readings by season are 46.6°F in Winter, 47.0°F in Spring, 57.0°F in Summer, and 54.2°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Alexandria 56.6°F 3mi
Houston 56.7°F 5mi
Falkirk 58.3°F 31mi
Ayr 57.8°F 33mi
Fort William 53.6°F 64mi

* current water temperature in this city

** straight line distance from Dumbarton