All data are in degrees Fahrenheit

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Water temperature in Hamilton

Detailed information about the current water temperature in Hamilton. 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 Hamilton now

66.6

°F

March 6, 22:35

Trend:

decreasing

Yesterday:

66.7°F

Tomorrow:

66.4°F

Sunrise:

06:41

Sunset:

18:20

Day Length:

11 h. 39 min.

Hamilton in March

Minimum:

69.5°F

Average:

70.7°F

Maximum:

71.8°F

Sea water temperature in Hamilton today

As of now, in Hamilton, the water temperature is 66.6°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 1.5°F lower 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 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 is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 69.4°F on 2022, while the historical minimum was 66.3°F on 2025.

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. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 66.3°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Hamilton

Date Current Year

actual* / forecast**

last year 10 years average
Feb 20 66.6°F 67.1°F 68.2°F
Feb 21 66.4°F 66.7°F 68.1°F
Feb 22 66.2°F 66.6°F 67.9°F
Feb 23 66.5°F 66.2°F 67.8°F
Feb 24 66.5°F 65.4°F 67.9°F
Feb 25 66.5°F 65.8°F 67.8°F
Feb 26 66.1°F 66.2°F 67.9°F
Feb 27 66.1°F 66.4°F 68.0°F
Feb 28 66.1°F 66.6°F 67.9°F
Mar 1 66.1°F 66.4°F 67.9°F
Mar 2 66.5°F 66.3°F 67.9°F
Mar 3 66.8°F 66.5°F 67.9°F
Mar 4 66.5°F 66.8°F 67.8°F
Mar 5 66.7°F 66.3°F 68.0°F
Mar 6 66.6°F 66.3°F 68.1°F
Mar 7 66.4°F 66.1°F 67.8°F
Mar 8 66.3°F 66.4°F 67.8°F
Mar 9 66.3°F 66.3°F 67.8°F
Mar 10 66.3°F 66.3°F 67.7°F
Mar 11 66.3°F 66.1°F 67.7°F
Mar 12 66.3°F 66.3°F 67.8°F
Mar 13 66.0°F 66.3°F 67.4°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 Hamilton by month

In Hamilton, the months June through November offer comfortable swimming conditions, which amounts to 188 swimming days.
The warmest water in Hamilton was recorded on August 15, 2020, reaching a 85.6°F. While the coldest temperature occurred on February 24, 2025, dipping to 65.4°F. The average readings by season are 69.9°F in Winter, 69.7°F in Spring, 80.6°F in Summer, and 78.9°F in Autumn.