June weather forecast
Havana, Cuba

June in Havana heralds the peak of the wet season. The average daily sunshine hours reduce to 8 hours, offering some respite from the escalation in temperature. Even so, the locales and guests relish the extra time outside granted by the year's longest daylight hours at 13.5 hours. The significant increase in rainfall, highest in the year, however, can lead to few interruptions in outdoor plans. A higher sea temperature of 28.7°C (83.7°F) supplements the growing humidity content in the atmosphere.

Temperature

The arrival of June denotes a barely perceptible change in the average high-temperatures to a tropical 30.5°C (86.9°F) from May's 29.8°C (85.6°F). Havana records an average low-temperature of 23.4°C (74.1°F) throughout the month of June.

Heat index

Throughout June, the heat index is appraised at a fiery hot 38°C (100.4°F). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'real feel', joins air temperature with relative humidity to produce a temperature perception for humans. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

The average relative humidity in June is 77%.

Rainfall

June is the month with the most rainfall. Rain falls for 10 days and accumulates 182mm (7.17") of precipitation.

Sea temperature

In Havana, Cuba, in June, the average water temperature is 28.7°C (83.7°F).
Note: Engaging in water activities, such as swimming or diving, in temperatures from 25°C (77°F) to 29°C (84.2°F) is very pleasurable for extended periods, without any discomfort.

Daylight

With an average of 13h and 30min of daylight, June has the longest days of the year.
On the first day of June in Havana, sunrise is at 06:43 and sunset at 20:11. On the last day of the month, sunrise is at 06:47 and sunset at 20:19 CDT.

Sunshine

The average sunshine in June in Havana is 8h.

UV index

The months with the highest UV index in Havana are April through June, with an average maximum UV index of 12. A UV Index reading of 11, and higher, represents an extreme health hazard from unsafe exposure to UV radiation for the average person.
Note: An average UV index of 12 in June transforms into this advice:
Utilize all necessary safety measures, unprotected skin could suffer burns instantly. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. One must apply and reapply generously an SPF 30+ broad-spectrum sunscreen every two hours or after an outdoor workout or swim. Caution! Sand and water surfaces escalate the UV intensity from the Sun.