All data are in degrees Fahrenheit

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Water temperature in Delaware City

Detailed information about the current water temperature in Delaware City. 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 Delaware City now

39.0

°F

December 31, 23:57

Trend:

stable

Yesterday:

38.0°F

Tomorrow:

38.5°F

Sunrise:

07:23

Sunset:

16:48

Day Length:

9 h. 25 min.

Delaware City in January

Minimum:

34.9°F

Average:

40.2°F

Maximum:

44.0°F

Sea water temperature in Delaware City today

As of now, in Delaware City, the water temperature is 39.0°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 1.7°F lower than the average recorded on this particular day in recent years. Since yesterday, there was a noticeable 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

The water temperature today is above average for the last two weeks, showing a small increase in temperature. It also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 44.2°F on 2015, while the historical minimum was 36.4°F on 2022.

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 38.3°F, the minimum temperature may reach 38.0°F, and the maximum might stay at 38.7°F.

Daily water temperature in Delaware City

Date Current Year

actual* / forecast**

last year 10 years average
Jan 1 38.5°F 41.8°F 40.2°F
Jan 2 38.7°F 41.8°F 40.4°F
Jan 3 38.5°F 41.6°F 40.2°F
Jan 4 38.1°F 41.0°F 39.8°F
Jan 5 38.0°F 40.2°F 39.8°F
Jan 6 38.2°F 39.3°F 39.9°F
Jan 7 38.1°F 39.1°F 39.8°F
Dec 17 39.1°F 40.6°F 42.9°F
Dec 18 37.6°F 39.8°F 43.1°F
Dec 19 38.3°F 41.2°F 43.1°F
Dec 20 38.2°F 41.5°F 42.2°F
Dec 21 38.7°F 41.4°F 42.2°F
Dec 22 37.6°F 41.6°F 41.6°F
Dec 23 38.0°F 41.1°F 41.6°F
Dec 24 38.1°F 40.2°F 41.9°F
Dec 25 38.5°F 39.2°F 41.8°F
Dec 26 37.4°F 39.3°F 41.3°F
Dec 27 38.1°F 39.4°F 41.1°F
Dec 28 39.0°F 38.7°F 41.1°F
Dec 29 37.6°F 38.6°F 40.9°F
Dec 30 38.0°F 38.5°F 40.7°F
Dec 31 39.0°F 41.8°F 40.7°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 Delaware City by month

In Delaware City, the months July through September offer comfortable swimming conditions, which amounts to 96 swimming days.
The warmest water in Delaware City was recorded on July 12, 2024, reaching a 86.5°F. While the coldest temperature occurred on January 24, 2025, dipping to 32.0°F. The average readings by season are 39.5°F in Winter, 52.4°F in Spring, 77.6°F in Summer, and 64.8°F in Autumn.