April weather forecast
Calcutta, Suriname

April is characterized by a significant shift in Calcutta's weather patterns. The most noteworthy change is the sharp increase in rainfall, reaching up to 105mm (4.13"), indicating the start of the wet season. Concomitantly, both humidity and wind speed decrease slightly, leading to overall comfortable outdoor conditions. Even with occasional showers, the city's famous landmarks continue to appeal to tourists. Despite sporadic showers, Calcutta breathes easy with the freshness and tranquility April weather brings along.

Temperature

Calcutta in April witnesses an average high-temperature of a still moderately hot 29°C (84.2°F), indicating a slight variation from March's 28.6°C (83.5°F). The month of April is marked by an average minimum temperature of 24.5°C (76.1°F), slightly cooler than its daytime counterpart.

Heat index

April's heat index is appraised at a fiery hot 35°C (95°F). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.
Heat index data is primarily for areas with shade and subjected to light winds. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is achieved by amalgamating air temperature with the relative humidity readings. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.

Humidity

The average relative humidity in April is 81%.

Rainfall

In Calcutta, Suriname, in April, it is raining for 24.8 days, with typically 105mm (4.13") of accumulated precipitation. In Calcutta, during the entire year, the rain falls for 268.5 days and collects up to 1061mm (41.77") of precipitation.

Daylight

The average length of the day in April in Calcutta, Suriname, is 12h and 15min.
On the first day of April in Calcutta, sunrise is at 06:40 and sunset at 18:51. On the last day of the month, sunrise is at 06:30 and sunset at 18:49 -03.

Sunshine

The months with the least sunshine in Calcutta are February and April, with an average of 6.7h of sunshine.

UV index

January, April, May and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In April, the maximum UV index of 6 translates into these guidelines:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.