April weather forecast
Santa Clara, São Tomé and Príncipe

April brings about minor shifts in weather occurrences in Santa Clara. The temperature measures vary minimally from 28.6°C (83.5°F) during daytime to 27.2°C (81°F) after sunset, maintaining comfort in the air. The rainfall, reaching about 126mm (4.96") on average, is distributed over a lesser number of days than March indicating slight downpour increases. The climate still holds quite warm, and humid conditions, but the frequency of sunshine days rises slightly. The wind speed decreases providing less relief from the muggy environment.

Temperature

The advent of April in Santa Clara brings an average high-temperature of a still warm 28.6°C (83.5°F), exhibiting minor difference from the previous month. Santa Clara's nighttime average temperature in April drops marginally from the daytime highs, settling at a still warm 27.2°C (81°F).

Heat index

The heat index value for April is evaluated at a tropical 33°C (91.4°F). Implement more preventive measures, heat cramps and heat exhaustion are probable. Heatstroke might result from extended activity.
Know that the heat index computations account for shaded terrains and slight winds. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', provides an understanding of perceived warmth by combining temperature and relative humidity. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.

Humidity

In Santa Clara, São Tomé and Príncipe, the average relative humidity in April is 77%.

Rainfall

In April, in Santa Clara, São Tomé and Príncipe, the rain falls for 22 days. Throughout April, 126mm (4.96") of precipitation is accumulated. In Santa Clara, São Tomé and Príncipe, during the entire year, the rain falls for 241.7 days and collects up to 1287mm (50.67") of precipitation.

Daylight

In April, the average length of the day in Santa Clara is 12h and 7min.
On the first day of April, 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

In Santa Clara, São Tomé and Príncipe, the average sunshine in April is 8.1h.

UV index

The months with the highest UV index 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 risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In April, the maximum UV index of 7 transforms into these recommendations:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.