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

68.0

°F

October 23, 17:14

Trend:

increasing

Yesterday:

67.9°F

Tomorrow:

68.3°F

Sunrise:

06:04

Sunset:

19:11

Day Length:

13 h. 7 min.

Hamilton in October

Minimum:

70.6°F

Average:

72.6°F

Maximum:

74.6°F

Sea water temperature in Hamilton today

As of now, in Hamilton, the water temperature is 68.0°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 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 rise 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 maximum temperature for this date. The maximum temperature recorded for this date was 69.5°F on 2025, while the historical minimum was 64.7°F on 2018.

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. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 68.6°F, with minimum temperature starting at 68.3°F, while the maximum might reach 68.8°F.

Daily water temperature in Hamilton

Date Current Year

actual* / forecast**

last year 10 years average
Oct 9 66.7°F 68.2°F 66.1°F
Oct 10 66.9°F 68.7°F 66.3°F
Oct 11 67.6°F 67.8°F 66.3°F
Oct 12 68.4°F 67.5°F 66.4°F
Oct 13 68.3°F 68.8°F 66.3°F
Oct 14 68.2°F 68.4°F 66.2°F
Oct 15 66.8°F 67.9°F 66.0°F
Oct 16 67.0°F 68.1°F 66.1°F
Oct 17 67.9°F 68.5°F 66.3°F
Oct 18 68.4°F 68.0°F 66.3°F
Oct 19 67.9°F 69.3°F 66.4°F
Oct 20 67.1°F 69.4°F 66.4°F
Oct 21 67.7°F 69.2°F 66.5°F
Oct 22 67.9°F 69.3°F 66.5°F
Oct 23 68.0°F 69.5°F 66.5°F
Oct 24 68.3°F 70.3°F 66.8°F
Oct 25 68.6°F 69.9°F 67.2°F
Oct 26 68.6°F 68.6°F 67.1°F
Oct 27 68.7°F 68.7°F 67.2°F
Oct 28 68.5°F 68.6°F 67.0°F
Oct 29 68.8°F 68.6°F 67.4°F
Oct 30 68.8°F 68.6°F 67.3°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 January through March offer comfortable swimming conditions, which amounts to 70 swimming days.
The warmest water in Hamilton was recorded on February 2, 2020, reaching a 78.9°F. While the coldest temperature occurred on August 25, 2018, dipping to 60.8°F. The average readings by season are 72.9°F in Winter, 71.7°F in Spring, 64.9°F in Summer, and 66.3°F in Autumn.