San Jose in May
Find out everything about the water temperature in San Jose in May. Average, minimum and maximum recorded temperatures as well as daily temperature in May for the last two years. Compare the current month's sea temperature data with other months of the year.
Water temperature in May
Minimum:
51.9 °F
Average:
60.9 °F
Maximum:
67.0 °F
Sea water temperature in San Jose in May
In the city of San Jose, the month of May is somewhat too cool for swimming. The minimum recorded temperature during this month was 51.9°F on May 18, 2017, with an average temperature being 60.9°F and a maximum temperature reaching 67.0°F on May 16, 2026.
| Date | 10 years average | 2026 | 2025 |
|---|---|---|---|
| May 1 | 59.6°F | 62.2°F | 60.1°F |
| May 2 | 59.8°F | 63.8°F | 60.0°F |
| May 3 | 60.1°F | 64.0°F | 60.1°F |
| May 4 | 60.0°F | 62.8°F | 59.8°F |
| May 5 | 60.0°F | 62.5°F | 60.0°F |
| May 6 | 60.1°F | 62.2°F | 60.8°F |
| May 7 | 59.9°F | 62.0°F | 61.9°F |
| May 8 | 60.0°F | 64.7°F | 61.6°F |
| May 9 | 60.5°F | 65.9°F | 61.5°F |
| May 10 | 60.3°F | 65.0°F | 61.3°F |
| May 11 | 60.0°F | 65.0°F | 60.9°F |
| May 12 | 60.4°F | 65.5°F | 61.4°F |
| May 13 | 61.0°F | 66.1°F | 61.9°F |
| May 14 | 61.2°F | 66.2°F | 61.4°F |
| May 15 | 61.3°F | 66.6°F | 61.8°F |
| May 16 | 61.2°F | 67.0°F | 61.7°F |
| May 17 | 60.9°F | 65.9°F | 61.5°F |
| May 18 | 60.8°F | 64.7°F | 62.0°F |
| May 19 | 61.1°F | 65.1°F | 62.2°F |
| May 20 | 61.1°F | 64.7°F | 62.6°F |
| May 21 | 61.4°F | 65.1°F | 63.0°F |
| May 22 | 61.5°F | 64.6°F | 63.0°F |
| May 23 | 61.6°F | 65.0°F | 63.0°F |
| May 24 | 62.0°F | 65.3°F | 63.7°F |
| May 25 | 62.2°F | 65.4°F | 64.3°F |
| May 26 | 61.8°F | 64.0°F | 63.1°F |
| May 27 | 61.6°F | 64.5°F | 63.1°F |
| May 28 | 61.6°F | 63.8°F | 62.9°F |
| May 29 | 61.7°F | 63.6°F | 62.5°F |
| May 30 | 61.7°F | 63.8°F | 62.3°F |
| May 31 | 62.0°F | 64.4°F | 63.4°F |
In an average year, San Jose offers no days when the water temperature is warm enough to swim comfortably.
The warmest water in San Jose was recorded on October 7, 2024, reaching a 73.9°F. While the coldest temperature occurred on January 23, 2025, dipping to 50.5°F. The average readings by season are 53.7°F in Winter, 58.6°F in Spring, 64.7°F in Summer, and 62.4°F in Autumn.
The average temperature in May is slightly warmer than April's average of 58.7°F. And in June, the temperature is expected to rise further, potentially reaching an average of 63.4°F.
Popular neighboring cities and resorts
| City | Water temperature* | Distance** |
|---|---|---|
| Redwood City |
68.3°F
|
21mi |
| Oakland |
62.2°F
|
38mi |
| San Francisco |
62.0°F
|
42mi |
| Monterey |
51.7°F
|
51mi |
* current water temperature in this city
** straight line distance from San Jose