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

69.9

°F

January 23, 12:32

Trend:

decreasing

Yesterday:

70.1°F

Tomorrow:

69.7°F

Sunrise:

07:18

Sunset:

17:44

Day Length:

10 h. 26 min.

Hamilton in January

Minimum:

69.5°F

Average:

70.6°F

Maximum:

71.9°F

Sea water temperature in Hamilton today

As of now, in Hamilton, the water temperature is 69.9°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 0.9°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 fall a bit.

Recent sea temperature and forecast

Today's water temperature slightly varies from the average of the past two weeks. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 70.0°F on 2021, while the historical minimum was 65.8°F on 2025.

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 69.6°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
Jan 9 69.8°F 69.2°F 70.1°F
Jan 10 70.2°F 68.9°F 70.0°F
Jan 11 70.0°F 68.6°F 69.9°F
Jan 12 69.9°F 68.3°F 69.9°F
Jan 13 69.7°F 68.0°F 69.7°F
Jan 14 69.4°F 67.9°F 69.5°F
Jan 15 69.6°F 68.0°F 69.5°F
Jan 16 69.8°F 67.8°F 69.5°F
Jan 17 70.1°F 67.5°F 69.6°F
Jan 18 70.1°F 67.2°F 69.5°F
Jan 19 70.3°F 66.7°F 69.4°F
Jan 20 70.2°F 66.7°F 69.2°F
Jan 21 70.4°F 66.6°F 69.3°F
Jan 22 70.1°F 66.0°F 69.1°F
Jan 23 69.9°F 65.8°F 69.0°F
Jan 24 69.7°F 65.7°F 68.8°F
Jan 25 69.7°F 65.7°F 68.8°F
Jan 26 69.7°F 66.2°F 68.8°F
Jan 27 69.6°F 65.9°F 68.8°F
Jan 28 69.6°F 66.4°F 68.8°F
Jan 29 69.5°F 66.5°F 68.6°F
Jan 30 69.6°F 66.5°F 68.7°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 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.