Usually the average weather in Cayo Guillermo in August is 26. Average highs are typically 33 with low daily temperautes being 23. Our table below has the full details:
| Month | Degrees Celsius |
|---|---|
| Temperature | 26 |
| High Temperature | 33 |
| Low Temperature | 23 |
| Sunshine Per Day | 9 |
Useful Links: Cayo Guillermo Weather: Average Weather & Yearly Climate