Normally the average daily weather in San Juan throughout the duration of May is 25. Average high degrees are usually 29 and low being 23. We have put some more information below:
| Month | Degrees Celsius |
|---|---|
| Temperature | 25 |
| High Temperature | 29 |
| Low Temperature | 23 |
| Sunshine Per Day | 9 |
Useful Links: San Juan Weather: Average Weather & Yearly Climate