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

66.8

°F

October 15, 16:38

Trend:

increasing

Yesterday:

66.5°F

Tomorrow:

66.9°F

Sunrise:

07:12

Sunset:

18:24

Day Length:

11 h. 12 min.

Delaware City in October

Minimum:

33.2°F

Average:

38.9°F

Maximum:

42.4°F

Sea water temperature in Delaware City today

As of now, in Delaware City, the water temperature is 66.8°F. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool. Today's reading is 0.7°F higher 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 aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 70.2°F on 2021, while the historical minimum was 62.2°F on 2022.

Over the last two weeks, the water temperature has stayed slightly lower than historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 65.3°F, the minimum temperature may reach 64.2°F, and the maximum might stay at 66.9°F.

Daily water temperature in Delaware City

Date Current Year

actual* / forecast**

last year 10 years average
Oct 1 66.8°F 72.5°F 70.4°F
Oct 2 69.3°F 73.2°F 70.4°F
Oct 3 69.5°F 72.5°F 70.1°F
Oct 4 67.7°F 71.7°F 69.8°F
Oct 5 67.3°F 71.0°F 69.7°F
Oct 6 68.2°F 72.6°F 69.4°F
Oct 7 67.9°F 72.1°F 69.1°F
Oct 8 67.1°F 72.1°F 69.2°F
Oct 9 66.8°F 71.9°F 68.8°F
Oct 10 66.5°F 71.2°F 68.4°F
Oct 11 66.1°F 69.9°F 67.6°F
Oct 12 65.8°F 69.3°F 67.2°F
Oct 13 65.6°F 68.3°F 66.7°F
Oct 14 66.5°F 67.5°F 66.5°F
Oct 15 66.8°F 66.7°F 66.2°F
Oct 16 66.9°F 66.2°F 66.2°F
Oct 17 66.3°F 65.2°F 65.6°F
Oct 18 65.8°F 64.2°F 65.1°F
Oct 19 64.9°F 62.9°F 64.2°F
Oct 20 64.6°F 63.2°F 63.9°F
Oct 21 64.2°F 63.3°F 63.6°F
Oct 22 64.3°F 63.1°F 63.6°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 Delaware City by month

In Delaware City, the months July through September offer comfortable swimming conditions, which amounts to 97 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 39.4°F in Winter, 52.9°F in Spring, 77.9°F in Summer, and 64.9°F in Autumn.