April weather forecast
Calcutta, Belize

April is a hot spring month in Calcutta, Belize, with an average temperature varying between 31.7°C (89.1°F) and 23.6°C (74.5°F).

Temperature

April notes an average high-temperature of a tropical 31.7°C (89.1°F), subtly differing from March's 29.8°C (85.6°F). April witnesses an average nighttime temperature of 23.6°C (74.5°F).

Heat index

For most parts of April, the heat index is calculated to be a blistering 41°C (105.8°F). Implement additional preventive actions, heat cramps and heat exhaustion are potential hazards. Heatstroke could follow prolonged activity.
Always consider that heat index estimations are for light winds and places in the shade. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', embodies the combination of air temperature and moisture content to illustrate perceived heat. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. 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 particular significance for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

The average relative humidity in April in Calcutta is 75%.

Rainfall

In Calcutta, in April, it is raining for 10.1 days, with typically 28mm (1.1") of accumulated precipitation. Throughout the year, there are 198.4 rainfall days, and 752mm (29.61") of precipitation is accumulated.

Daylight

The average length of the day in April is 12h and 34min.
On the first day of April in Calcutta, sunrise is at 05:47 and sunset at 18:07. On the last day of the month, sunrise is at 05:26 and sunset at 18:15 CST.

Sunshine

April has the most sunshine of the year, with an average of 8.9h of sunshine.

UV index

The months with the highest UV index are March through July and September, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the ordinary person.
Note: A daily high UV index of 7 in April leads to these guidelines:
Shun overexposure. Protection from sun ravages is indispensable. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. To cut down UV radiation exposure by about half, sport a wide-brim hat.