April weather forecastSan Luis, Cuba

Weather in April

April witnesses a substantial incline in rainfall, rising to 64mm (2.52") over 22 days, a clear shift from the drier conditions of March. Nonetheless, the daytime extends further and sunshine comes in plenty with an average of 11 hours daily. With the relative humidity averaging at 78%, the atmosphere retains ample moisture throughout the month. On a unique note, temperatures in April range from a low of 20.8°C (69.4°F) to a high of 29.7°C (85.5°F), indicative of the warming trend. Persistent easterly winds are a characteristic feature of April, although not as strong as in the preceding months.

Temperature

The transition into April shows a subtle variation to a still warm 29.7°C (85.5°F) from March's 29°C (84.2°F) in the average high-temperature. April nights experience a consistent temperature drop to a pleasant 20.8°C (69.4°F).

Heat index

In April, the average heat index is estimated at a sweltering 36°C (96.8°F). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.
Be advised, the heat index considers values for conditions in shade and with a light breeze. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', measures the perceived warmth when incorporating the humidity present in the air. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

In April, the average relative humidity is 78%.

Rainfall

In San Luis, in April, it is raining for 22 days, with typically 64mm (2.52") of accumulated precipitation. In San Luis, during the entire year, the rain falls for 242.5 days and collects up to 898mm (35.35") of precipitation.

Daylight

The average length of the day in April is 12h and 37min.
On the first day of April, sunrise is at 06:56 and sunset at 19:17. On the last day of the month, sunrise is at 06:34 and sunset at 19:27 CDT.

Sunshine

In April, the average sunshine is 11h.

UV index

The months with the lowest UV index in San Luis are January through April, October through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index, 6 in April, converts into the following recommendations:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.