San Juan in October
Find out everything about the water temperature in San Juan in October. Average, minimum and maximum recorded temperatures as well as daily temperature in October for the last two years. Compare the current month's sea temperature data with other months of the year.
Water temperature in October
Minimum:
83.8 °F
Average:
85.9 °F
Maximum:
88.5 °F
Sea water temperature in San Juan in October
In the city of San Juan, the month of October is a great time for swimming. The minimum recorded temperature during this month was 83.8°F on October 21, 2016, with an average temperature being 85.9°F and a maximum temperature reaching 88.5°F on October 14, 2026.
| Date | 10 years average | 2026 | 2025 |
|---|---|---|---|
| Oct 1 | 86.0°F | 87.2°F | 85.8°F |
| Oct 2 | 85.9°F | 86.9°F | 85.5°F |
| Oct 3 | 86.1°F | 87.6°F | 85.3°F |
| Oct 4 | 86.1°F | 87.8°F | 85.4°F |
| Oct 5 | 86.1°F | 87.8°F | 85.0°F |
| Oct 6 | 85.8°F | 87.4°F | 84.4°F |
| Oct 7 | 85.8°F | 87.6°F | 84.8°F |
| Oct 8 | 85.8°F | 87.5°F | 84.8°F |
| Oct 9 | 85.9°F | 87.0°F | 85.1°F |
| Oct 10 | 85.9°F | 86.9°F | 85.1°F |
| Oct 11 | 86.0°F | 88.1°F | 85.0°F |
| Oct 12 | 85.9°F | 87.6°F | 84.8°F |
| Oct 13 | 85.9°F | 87.7°F | 85.1°F |
| Oct 14 | 86.1°F | 88.5°F | 86.2°F |
| Oct 15 | 86.1°F | 88.3°F | 86.0°F |
| Oct 16 | 86.0°F | 87.6°F | 86.5°F |
| Oct 17 | 86.0°F | 88.0°F | 86.6°F |
| Oct 18 | 86.3°F | 88.3°F | 86.7°F |
| Oct 19 | 86.2°F | 87.9°F | 86.5°F |
| Oct 20 | 86.1°F | 87.9°F | 86.2°F |
| Oct 21 | 86.1°F | 87.9°F | 85.7°F |
| Oct 22 | 86.0°F | 86.8°F | 85.7°F |
| Oct 23 | 85.8°F | 86.5°F | 85.6°F |
| Oct 24 | 85.8°F | 86.1°F | 85.7°F |
| Oct 25 | 85.7°F | 85.6°F | 85.5°F |
| Oct 26 | 85.7°F | 85.9°F | 86.4°F |
| Oct 27 | 85.5°F | 85.7°F | 86.1°F |
| Oct 28 | 85.6°F | 85.7°F | 85.9°F |
| Oct 29 | 85.6°F | 85.8°F | 85.7°F |
| Oct 30 | 85.6°F | 85.7°F | 85.8°F |
| Oct 31 | 85.5°F | 85.7°F | 85.7°F |
In San Juan, the water temperature is comfortable for swimming all year round.
The warmest water in San Juan was recorded on July 6, 2023, reaching a 88.8°F. While the coldest temperature occurred on February 8, 2016, dipping to 79.4°F. The average readings by season are 82.6°F in Winter, 84.6°F in Spring, 86.2°F in Summer, and 85.5°F in Autumn.
In October, the temperature is higher than September's average of 85.4°F and November's average of 85.1°F.
Popular neighboring cities and resorts
| City | Water temperature* | Distance** |
|---|---|---|
| Santa Maria |
85.3°F
|
21mi |
| Zaragoza |
85.6°F
|
33mi |
| Santiago |
84.8°F
|
44mi |
* current water temperature in this city
** straight line distance from San Juan