April weather forecast
San Fernando, Trinidad and Tobago

April presents the onset of hotter temperatures, preceding the intense heat usually experienced in the coming summer months. Notwithstanding the rising mercury levels, the climate remains agreeable. The month also indicates the onset of longer daylight hours. During April, the temperature peaks to a sweltering 29.6°C (85.3°F) while the lowest marks 25.8°C (78.4°F) on the thermometer. Despite the scarce rainfall of only 17mm (0.67") over 11.6 days, the lazy spring afternoons stay pleasing.

Temperature

Stepping into April, San Fernando records an average high-temperature of a still warm 29.6°C (85.3°F), almost consistent with March. San Fernando sees a minor drop to an average minimum temperature of 25.8°C (78.4°F) during the night in the month of April.

Heat index

The heat index value during April is appraised at a sweltering 35°C (95°F). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.
Realize that the values for the heat index are set for shaded places and light winds. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', unifies temperature and humidity readings to offer a comprehensive feel of warmth. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely vital to babies and toddlers. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.

Humidity

The months with the lowest humidity in San Fernando are March and April, with an average relative humidity of 74%.

Rainfall

The month with the least rainfall in San Fernando, Trinidad and Tobago, is April, when the rain falls for 11.6 days and typically collects 17mm (0.67") of precipitation.

Sea temperature

In San Fernando, the average seawater temperature in April is 27.7°C (81.9°F).
Note: For swimming, diving, and various water activities, the temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are seen as highly enjoyable and comfortable for extended durations without any discomfort.

Daylight

The average length of the day in April is 12h and 22min.
On the first day of the month, sunrise is at 06:02 and sunset at 18:16. On the last day of April, in San Fernando, sunrise is at 05:48 and sunset at 18:17 AST.

Sunshine

The average sunshine in April in San Fernando is 10h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in San Fernando. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: In April, the maximum UV index of 7 suggests this advice:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Warning! Sand and water reflections boost the intensity of UV exposure.