Havana, like the rest of Cuba, has two kinds of weather: hot and really, really hot. In July and August most of Havana goes on vacation to escape the sultry heat, which is bolstered by the humidity. The rainy season runs from May to October, overlapping with the hurricane season, which is generally from June to November. Havana can very occasionally be affected by cold winds from the North American interior, causing a day or two of temperatures below the 10°C (50°F) mark. Bring warmer clothes for the evenings if you are visiting at this time of year - it's colder than you think.
| Month | Temp (°C) | Rainfall (mm) | Humidity (%) | Sunshine (hours) |
| Jan | 18 - 26 | 71 | 6 | |
| Feb | 18 - 26 | 46 | 6 | |
| Mar | 19 - 27 | 46 | 7 | |
| Apr | 21 - 29 | 58 | 7 | |
| May | 22 - 30 | 119 | 8 | |
| Jun | 23 - 31 | 165 | 6 | |
| Jul | 24 - 32 | 125 | 6 | |
| Aug | 24 - 32 | 135 | 6 | |
| Sep | 24 - 31 | 150 | 5 | |
| Oct | 23 - 29 | 173 | 5 | |
| Nov | 21 - 27 | 79 | 5 | |
| Dec | 19 - 26 | 58 | 5 |