April weather forecast
Thiruvananthapuram, India

April, like March, is another tropical pre-monsoon summer month in Thiruvananthapuram, India, with an average temperature fluctuating between 33.1°C (91.6°F) and 25.1°C (77.2°F).

Temperature

Transitioning into April, Thiruvananthapuram experiences an average high-temperature of a still tropical 33.1°C (91.6°F), marking a minor shift from the preceding month. During the month of April, the temperature falls to an average of 25.1°C (77.2°F).

Heat index

For most parts of April, the heat index is calculated to be a life-threatening hot 47°C (116.6°F). Alert: Heat cramps and heat exhaustion are likely to occur. Prolonged exertion can lead to heatstroke.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Direct exposure to sunshine could lead to a heat index increase 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 a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. 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. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

The average relative humidity in April is 77%.

Rainfall

In Thiruvananthapuram, India, in April, during 6.5 rainfall days, 119mm (4.69") of precipitation is typically accumulated. Throughout the year, in Thiruvananthapuram, there are 95.3 rainfall days, and 1754mm (69.06") of precipitation is accumulated.

Sea temperature

The months with the warmest seawater in Thiruvananthapuram are April and May, with an average sea temperature of 30°C (86°F).
Note: For a cooling respite, water temperatures above 30°C (86°F) might not be the first choice for many.

Daylight

The average length of the day in April is 12h and 19min.
On the first day of April in Thiruvananthapuram, sunrise is at 6:19 am and sunset at 6:32 pm. On the last day of the month, sunrise is at 6:06 am and sunset at 6:32 pm IST.

Sunshine

The average sunshine in April in Thiruvananthapuram is 7.1h.

UV index

The months with the highest UV index are February through October, with an average maximum UV index of 12. A UV Index estimate of 11, and higher, represents an ultimate health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: The UV index of 12 during April leads to these advisories:
Undertake all critical precautions. Protection from sun harm is vital. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. After a swim or an outdoor workout, generously apply and regularly reapply a sunscreen with at least SPF 30, even if the day is cloudy. Heads up! UV intensity is amplified by reflections from water and sand.