Key Summary- Cuba has a tropical climate classified mainly as Aw (tropical savanna) and Am (tropical monsoon), with persistent high humidity and warm temperatures all year.
- The dry season (November to April) brings sunnier skies, while the wet season (May to October) delivers heavy afternoon downpours and a distinct hurricane season.
- Mountain ranges like the Sierra Maestra create cooler highlands and localised rainfall, offering a break from the otherwise uniformly hot coastal lowlands.
Lying just south of the Tropic of Cancer, Cuba’s climate is a product of its positioning within the Caribbean Sea and the persistent influence of northeast trade winds. Most of the island falls under a tropical savanna (Aw) classification, while parts of the western and central provinces experience a tropical monsoon (Am) regime. This means temperatures remain stubbornly high throughout the year, with coastal daytime highs typically ranging from 27°C to 31°C (81°F to 88°F) and nighttime lows rarely dipping below 20°C (68°F). The sea sustains water temperatures favourable for swimming year-round. The island’s elongated shape and generally low-lying topography, save for the Sierra Maestra in the east and the Cordillera de Guaniguanico in the west, allows maritime air to dominate, wrapping the landscape in persistent humidity.
The dry season from November to April is the result of a seasonal shift in the trade winds and the subtropical high-pressure belt, suppressing rainfall and bringing endless days of sunshine to the northern cays and the cobblestone streets of Old Havana. The wet season, May through October, sees the Intertropical Convergence Zone drift northward, churning up deep tropical moisture. Afternoon thunderstorms become a daily fixture, especially over the interior and the northern slopes of the mountains. The Sierra Maestra creates a pronounced rain shadow on the southeast coast around Guantánamo, where semi-arid conditions can take hold, contrasting with the lush tobacco-growing valleys of Viñales where orographic lift squeezes out abundant rain. The island lies squarely within the Atlantic hurricane corridor, and the hurricane season runs from June to November, peaking between August and October. These systems bring heavy, sustained rain and strong winds, primarily affecting coastal communities and keys such as those off the north shore. Higher elevations in the Sierra Maestra, like around Pico Turquino, experience a subtropical highland climate (Cwb), with cooler average temperatures that can feel refreshingly mild after the coastal heat.
For most visitors, the dry season from November to April presents the most comfortable window for exploring. During these months, humidity drops slightly, and rainfall is rare, making it easier to wander the sun-drenched Malecón in Havana or stroll through the quiet, pastel-hued streets of Trinidad. The wetter months, while rainier, turn the countryside a dazzling green and are suited for travel outside of peak hurricane risk periods, provided you pack a lightweight raincoat and expect intermittent, heavy showers. The hottest, steamiest stretch typically arrives in July and August, with afternoon temperatures often soaring above 33°C (91°F) and humidity making it feel considerably warmer, which can be uncomfortable for extended sightseeing. For a trip that balances favourable weather with thinner crowds, the early dry season months of November and December or late spring in April give you largely clear skies for spotting the endemic tocororo and browsing outdoor art markets. Pack light, breathable fabrics, high-factor sun protection, and a sturdy umbrella if visiting during the wet season. No matter the month, Cuba’s climate remains quintessentially Caribbean, offering warmth and vitality shaped by rhythmic seasonal rains and the unifying embrace of the sea. Explore WeatherBox for detailed monthly temperature and rainfall charts, and to view the interactive Köppen climate map for Cuba.
