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Hamilton in January

Find out everything about the water temperature in Hamilton in January. Average, minimum and maximum recorded temperatures as well as daily temperature in January for the last two years. Compare the current month's sea temperature data with other months of the year.
Water temperature in January
Minimum:

65.7 °F

Average:

69.5 °F

Maximum:

71.9 °F

Sea water temperature in Hamilton in January

In the city of Hamilton, the month of January is somewhat comfortable for swimming. The minimum recorded temperature during this month was 65.7°F on January 24, 2025, with an average temperature being 69.5°F and a maximum temperature reaching 71.9°F on January 1, 2016.

While some may find it enjoyable for a brief swim, others might consider it a bit too cold for extended periods in the water. In January, the sea temperature remains relatively stable. The average temperature stays close to 69.5°F throughout the month, with minimal changes.
Date 10 years average 2026 2025
Jan 1 70.6°F 69.5°F 70.4°F
Jan 2 70.6°F 69.6°F 70.4°F
Jan 3 70.7°F 69.5°F 70.6°F
Jan 4 70.4°F 69.2°F 70.3°F
Jan 5 70.3°F 69.3°F 70.0°F
Jan 6 70.2°F 69.4°F 70.1°F
Jan 7 70.1°F 69.3°F 69.7°F
Jan 8 70.2°F 69.7°F 69.4°F
Jan 9 70.2°F 69.8°F 69.2°F
Jan 10 69.9°F 69.5°F 68.9°F
Jan 11 69.9°F 69.5°F 68.6°F
Jan 12 69.9°F 69.5°F 68.3°F
Jan 13 69.7°F 69.4°F 68.0°F
Jan 14 69.6°F 69.2°F 67.9°F
Jan 15 69.5°F 69.1°F 68.0°F
Jan 16 69.5°F 69.1°F 67.8°F
Jan 17 69.5°F 69.2°F 67.5°F
Jan 18 69.5°F 69.1°F 67.2°F
Jan 19 69.3°F 68.9°F 66.7°F
Jan 20 69.1°F 68.7°F 66.7°F
Jan 21 69.2°F 68.8°F 66.6°F
Jan 22 69.0°F 68.7°F 66.0°F
Jan 23 69.0°F 68.6°F 65.8°F
Jan 24 68.8°F 68.4°F 65.7°F
Jan 25 68.8°F 68.4°F 65.7°F
Jan 26 68.8°F 68.4°F 66.2°F
Jan 27 68.8°F 68.4°F 65.9°F
Jan 28 68.8°F 68.4°F 66.4°F
Jan 29 68.6°F 68.2°F 66.5°F
Jan 30 68.7°F 68.3°F 66.5°F
Jan 31 68.7°F 68.3°F 66.5°F

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. January's average temperature is a slight drop from December's average of 71.8°F. In February, the temperature is expected to decrease further, potentially averaging around 68.3°F.