San Juan in July
Find out everything about the water temperature in San Juan in July. Average, minimum and maximum recorded temperatures as well as daily temperature in July for the last two years. Compare the current month's sea temperature data with other months of the year.
Water temperature in July
Minimum:
55.1 °F
Average:
59.3 °F
Maximum:
64.7 °F
Sea water temperature in San Juan in July
In the city of San Juan, the month of July is too cold for swimming. The minimum recorded temperature during this month was 55.1°F on July 6, 2024, with an average temperature being 59.3°F and a maximum temperature reaching 64.7°F on July 2, 2015.
| Date | 10 years average | 2024 | 2023 |
|---|---|---|---|
| Jul 1 | 60.0°F | 58.4°F | 63.3°F |
| Jul 2 | 59.7°F | 58.1°F | 62.5°F |
| Jul 3 | 59.6°F | 56.1°F | 62.4°F |
| Jul 4 | 59.6°F | 57.0°F | 62.2°F |
| Jul 5 | 59.8°F | 57.5°F | 64.6°F |
| Jul 6 | 59.5°F | 55.1°F | 64.5°F |
| Jul 7 | 59.4°F | 56.1°F | 64.0°F |
| Jul 8 | 59.3°F | 56.5°F | 63.5°F |
| Jul 9 | 59.4°F | 57.4°F | 63.9°F |
| Jul 10 | 59.5°F | 57.7°F | 63.2°F |
| Jul 11 | 59.3°F | 57.9°F | 63.6°F |
| Jul 12 | 59.6°F | 57.4°F | 63.7°F |
| Jul 13 | 59.6°F | 58.1°F | 63.3°F |
| Jul 14 | 59.7°F | 57.8°F | 63.2°F |
| Jul 15 | 59.6°F | 56.8°F | 62.7°F |
| Jul 16 | 59.5°F | 57.0°F | 62.6°F |
| Jul 17 | 59.3°F | 57.5°F | 62.3°F |
| Jul 18 | 59.2°F | 57.7°F | 64.7°F |
| Jul 19 | 59.2°F | 57.7°F | 64.3°F |
| Jul 20 | 59.1°F | 57.6°F | 64.1°F |
| Jul 21 | 59.2°F | 59.0°F | 63.5°F |
| Jul 22 | 59.4°F | 58.6°F | 63.8°F |
| Jul 23 | 59.2°F | 57.7°F | 63.5°F |
| Jul 24 | 59.4°F | 58.5°F | 64.6°F |
| Jul 25 | 59.4°F | 58.4°F | 64.4°F |
| Jul 26 | 58.7°F | 56.6°F | 63.6°F |
| Jul 27 | 58.5°F | 57.4°F | 61.6°F |
| Jul 28 | 58.6°F | 58.0°F | 62.7°F |
| Jul 29 | 58.3°F | 55.3°F | 61.3°F |
| Jul 30 | 58.7°F | 56.6°F | 61.1°F |
| Jul 31 | 58.7°F | 56.0°F | 61.2°F |
In an average year, San Juan offers no days when the water temperature is warm enough to swim comfortably.
The warmest water in San Juan was recorded on February 10, 2023, reaching a 72.2°F. While the coldest temperature occurred on October 19, 2021, dipping to 53.4°F. The average readings by season are 65.6°F in Winter, 63.7°F in Spring, 59.5°F in Summer, and 59.0°F in Autumn.
July's average temperature is a slight drop from June's average of 60.7°F. In August, the temperature is expected to decrease further, potentially averaging around 58.6°F.