San Juan in April
Find out everything about the water temperature in San Juan in April. Average, minimum and maximum recorded temperatures as well as daily temperature in April for the last two years. Compare the current month's sea temperature data with other months of the year.
Water temperature in April
Minimum:
57.3 °F
Average:
63.5 °F
Maximum:
70.3 °F
Sea water temperature in San Juan in April
In the city of San Juan, the month of April is somewhat too cool for swimming. The minimum recorded temperature during this month was 57.3°F on April 26, 2021, with an average temperature being 63.5°F and a maximum temperature reaching 70.3°F on April 12, 2023.
| Date | 10 years average | 2024 | 2023 |
|---|---|---|---|
| Apr 1 | 64.4°F | 66.9°F | 67.1°F |
| Apr 2 | 64.1°F | 62.7°F | 67.5°F |
| Apr 3 | 63.8°F | 63.9°F | 67.6°F |
| Apr 4 | 63.8°F | 65.4°F | 66.0°F |
| Apr 5 | 63.8°F | 66.2°F | 67.6°F |
| Apr 6 | 64.2°F | 67.5°F | 65.7°F |
| Apr 7 | 64.5°F | 67.5°F | 66.2°F |
| Apr 8 | 63.7°F | 66.2°F | 65.5°F |
| Apr 9 | 64.0°F | 66.6°F | 66.9°F |
| Apr 10 | 63.8°F | 65.3°F | 65.1°F |
| Apr 11 | 63.6°F | 65.7°F | 67.3°F |
| Apr 12 | 63.6°F | 65.7°F | 70.3°F |
| Apr 13 | 64.2°F | 65.6°F | 69.9°F |
| Apr 14 | 63.7°F | 64.4°F | 69.9°F |
| Apr 15 | 63.6°F | 64.4°F | 68.9°F |
| Apr 16 | 63.6°F | 63.4°F | 68.6°F |
| Apr 17 | 63.4°F | 62.8°F | 66.1°F |
| Apr 18 | 63.4°F | 60.5°F | 67.0°F |
| Apr 19 | 63.6°F | 63.1°F | 70.1°F |
| Apr 20 | 63.6°F | 63.6°F | 69.6°F |
| Apr 21 | 63.2°F | 64.1°F | 68.9°F |
| Apr 22 | 63.5°F | 64.9°F | 67.7°F |
| Apr 23 | 63.5°F | 63.6°F | 69.3°F |
| Apr 24 | 63.0°F | 63.0°F | 68.4°F |
| Apr 25 | 63.0°F | 64.5°F | 67.2°F |
| Apr 26 | 63.0°F | 64.0°F | 67.2°F |
| Apr 27 | 62.6°F | 61.4°F | 66.4°F |
| Apr 28 | 62.3°F | 60.6°F | 64.8°F |
| Apr 29 | 62.1°F | 60.3°F | 65.2°F |
| Apr 30 | 62.2°F | 60.9°F | 65.2°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.
April's average temperature is a slight drop from March's average of 66.0°F. In May, the temperature is expected to decrease further, potentially averaging around 61.7°F.