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

83.2

°F

September 16, 07:02

Trend:

decreasing

Yesterday:

83.5°F

Tomorrow:

82.9°F

Sunrise:

07:03

Sunset:

19:24

Day Length:

12 h. 21 min.

Hamilton in September

Minimum:

68.4°F

Average:

70.3°F

Maximum:

71.5°F

Sea water temperature in Hamilton today

As of now, in Hamilton, the water temperature is 83.2°F. Swimming in water of this temperature is considered highly warm and would be enjoyable for everyone. At this temperature, you can comfortably engage in water-based activities for extended periods without experiencing discomfort. Today's reading is 0.6°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 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 84.1°F on 2019, while the historical minimum was 80.5°F on 2023.

Over the last two weeks, the water temperature has stayed slightly above than historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 82.5°F, the minimum temperature may reach 82.2°F, and the maximum might stay at 82.9°F.

Daily water temperature in Hamilton

Date Current Year

actual* / forecast**

last year 10 years average
Sep 2 84.1°F 82.6°F 83.6°F
Sep 3 84.0°F 82.9°F 83.5°F
Sep 4 84.2°F 82.9°F 83.5°F
Sep 5 83.9°F 83.1°F 83.5°F
Sep 6 84.1°F 82.4°F 83.4°F
Sep 7 84.1°F 82.3°F 83.4°F
Sep 8 84.2°F 82.7°F 83.3°F
Sep 9 83.7°F 82.7°F 83.1°F
Sep 10 84.0°F 82.1°F 83.2°F
Sep 11 83.9°F 82.1°F 83.2°F
Sep 12 84.1°F 82.0°F 83.1°F
Sep 13 83.9°F 82.1°F 83.0°F
Sep 14 83.6°F 81.6°F 83.1°F
Sep 15 83.5°F 81.5°F 82.9°F
Sep 16 83.2°F 80.7°F 82.5°F
Sep 17 82.9°F 81.0°F 82.3°F
Sep 18 82.8°F 80.8°F 82.2°F
Sep 19 82.7°F 80.9°F 82.0°F
Sep 20 82.5°F 81.0°F 81.9°F
Sep 21 82.4°F 81.4°F 81.8°F
Sep 22 82.2°F 80.7°F 81.6°F
Sep 23 82.2°F 81.3°F 81.6°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 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 70.0°F in Winter, 69.7°F in Spring, 80.6°F in Summer, and 78.9°F in Autumn.