Average weather in Cayo Guillermo throughout the time of March is 22. Average high degrees are usually 29 with lows of 18 degrees. We have put some more details below:
| Month | Degrees Celsius |
|---|---|
| Temperature | 22 |
| High Temperature | 29 |
| Low Temperature | 18 |
| Sunshine Per Day | 9 |
Useful Links: Cayo Guillermo Weather: Average Weather & Yearly Climate