Is it warm enough to swim in Hamilton in July? Average water temperature in Hamilton in July is 27.3°C and therefore suitable for comfortable swimming. The warmest sea in Hamilton in July is 29.4°C, and the coldest is 24.6°C. Average high air temperature in Hamilton in July is 29°C, and average low temperature is 24°C. To find out the sea temperature today and in the coming days, go to Current sea temperature in Hamilton
To get an accurate forecast for the water temperature in Hamilton for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Hamilton, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of July.
Day | 2025 | 2024 | Min | Max |
---|---|---|---|---|
1 July | 28.2°C | 26.4°C | 25°C | 28.2°C |
2 July | 28.6°C | 26.2°C | 24.8°C | 28.6°C |
3 July | 28.5°C | 26.2°C | 25.1°C | 28.5°C |
4 July | 28.5°C | 26.2°C | 24.6°C | 28.5°C |
5 July | 28.3°C | 26.5°C | 24.6°C | 28.3°C |
6 July | 28.8°C | 26.4°C | 24.6°C | 28.8°C |
7 July | 28.6°C | 26.6°C | 24.7°C | 28.6°C |
8 July | 29.1°C | 26.6°C | 25°C | 29.1°C |
9 July | 29.1°C | 26.8°C | 25.5°C | 29.1°C |
10 July | 29.2°C | 27°C | 25.3°C | 29.2°C |
11 July | 29.4°C | 27.1°C | 24.8°C | 29.4°C |
12 July | 29.3°C | 27.1°C | 25.2°C | 29.3°C |
13 July | 29.3°C | 27.3°C | 25.6°C | 29.3°C |
14 July | 29.4°C | 27.6°C | 26°C | 29.4°C |
15 July | 29.3°C | 27.7°C | 25.7°C | 29.3°C |
Day | 2025 | 2024 | Min | Max |
---|---|---|---|---|
16 July | 29.3°C | 28°C | 25.6°C | 29.3°C |
17 July | 29.2°C | 28.2°C | 25.9°C | 29.2°C |
18 July | 29.2°C | 28.3°C | 25.9°C | 29.2°C |
19 July | 29.1°C | 27.8°C | 25.9°C | 29.1°C |
20 July | 28.9°C | 28.1°C | 26.1°C | 28.9°C |
21 July | 29°C | 28°C | 26.1°C | 29°C |
22 July | 28.6°C | 28.3°C | 26.2°C | 28.6°C |
23 July | 28.6°C | 28.2°C | 26.3°C | 28.8°C |
24 July | 28.5°C | 28.7°C | 26.4°C | 28.9°C |
25 July | 28.5°C | 28.9°C | 26.4°C | 28.9°C |
26 July | 28.5°C | 29°C | 26.5°C | 29°C |
27 July | 28.4°C | 28.8°C | 26.5°C | 28.8°C |
28 July | 28.8°C | 28.8°C | 26.6°C | 28.8°C |
29 July | 28.8°C | 28.7°C | 26.2°C | 29°C |
30 July | 29.1°C | 28.7°C | 26.5°C | 29.1°C |
31 July | 29.2°C | 28.6°C | 25.6°C | 29.2°C |
2016 | 2017 | 2018 | 2019 | 2020 |
27.3°C | 27.6°C | 26.7°C | 27.7°C | 27.2°C |
2021 | 2022 | 2023 | 2024 | 2025 |
27.3°C | 27°C | 27.3°C | 27.6°C | 28.9°C |
Chart comparing the height of waves in Hamilton in July over the past years. The red line indicates the height of the waves when swimming in the sea is prohibited. To view the current sea conditions, click on the graph.
This data display average monthly climate indicators in Hamilton in July based on our historical weather readings over a period of ten years. In addition to temperature, we include data on the number of rainy and sunny days so you can have all the information about your destination before your trip
You can also view information about water temperature for other months by clicking on the month button below