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

81.2

°F

July 13, 20:02

Trend:

stable

Yesterday:

81.4°F

Tomorrow:

81.3°F

Sunrise:

06:22

Sunset:

20:28

Day Length:

14 h. 6 min.

Hamilton in July

Minimum:

68.4°F

Average:

70.1°F

Maximum:

70.8°F

Sea water temperature in Hamilton today

As of now, in Hamilton, the water temperature is 81.2°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 0.3°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

Today's water temperature slightly varies from the average of the past two weeks. 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 84.9°F on 2025, while the historical minimum was 78.9°F on 2022.

Over the last two weeks, the water temperature has stayed slightly above than historical averages for those days. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 82.0°F, with minimum temperature starting at 81.3°F, while the maximum might reach 82.4°F.

Daily water temperature in Hamilton

Date Current Year

actual* / forecast**

last year 10 years average
Jun 29 80.0°F 81.8°F 79.1°F
Jun 30 80.4°F 82.4°F 79.3°F
Jul 1 80.3°F 83.1°F 79.4°F
Jul 2 80.3°F 82.9°F 79.7°F
Jul 3 80.5°F 83.6°F 79.8°F
Jul 4 80.9°F 83.5°F 79.8°F
Jul 5 81.6°F 83.4°F 80.0°F
Jul 6 82.2°F 83.1°F 80.1°F
Jul 7 82.4°F 83.9°F 80.3°F
Jul 8 82.3°F 83.5°F 80.5°F
Jul 9 82.1°F 84.4°F 80.6°F
Jul 10 81.8°F 84.5°F 80.8°F
Jul 11 81.4°F 84.7°F 80.8°F
Jul 12 81.4°F 85.0°F 80.9°F
Jul 13 81.2°F 84.9°F 80.9°F
Jul 14 81.3°F 84.8°F 81.0°F
Jul 15 81.6°F 85.0°F 81.4°F
Jul 16 81.8°F 84.8°F 81.5°F
Jul 17 82.1°F 84.9°F 81.8°F
Jul 18 82.2°F 84.7°F 82.0°F
Jul 19 82.4°F 84.5°F 82.1°F
Jul 20 82.4°F 84.5°F 82.1°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 190 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, 69.8°F in Spring, 80.6°F in Summer, and 78.9°F in Autumn.