April weather forecast
Caldeiras, São Tomé and Príncipe

In April, Caldeiras sees a remarkable continuance of its consistent tropical weather, with temperatures hovering close to the year's averages. Accompanying the warm temperatures is 126mm (4.96") of rainfall, slightly more than in March, distributed over 22 days. Despite the downpour, the city experiences plenty of sunshine glimpses throughout the day, blessing the beaches with a mild yet inviting warmth. April signals the end of the highest-volume rain period, offering a suitable transition towards drier seasons.

Temperature

April's presence records an average high-temperature of a still moderately hot 28.6°C (83.5°F), closely mirroring March's climate. Caldeiras observes a consistent average low-temperature of 27.2°C (81°F) throughout April nights.

Heat index

For April, the heat index is calculated to be a hot 33°C (91.4°F). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.

Humidity

In Caldeiras, the average relative humidity in April is 77%.

Rainfall

In April, the rain falls for 22 days. Throughout April, 126mm (4.96") of precipitation is accumulated. Throughout the year, in Caldeiras, there are 241.7 rainfall days, and 1287mm (50.67") of precipitation is accumulated.

Daylight

In Caldeiras, the average length of the day in April is 12h and 7min.
On the first day of April in Caldeiras, sunrise is at 05:33 and sunset at 17:40. On the last day of the month, sunrise is at 05:26 and sunset at 17:34 GMT.

Sunshine

The average sunshine in April is 8.1h.

UV index

The months with the highest UV index in Caldeiras are January through May, October through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: The UV index of 7 in April translates into these instructions:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.