April weather forecast
Gampaha, Sri Lanka

April witnesses a further escalation in weather intensity in Gampaha. The rainfall doubles to a hefty 112mm (4.41"), making this month one of the wettest of the year. The atmosphere tends to be heavier with an increase in relative humidity to 77%. Daylight hours remain virtually unchanged which, along with the increased rainfall, creates a unique setting. Despite the rainfall, Gampaha remains an attractive destination with its tropical climate and lush greenery.

Temperature

As March transitions into April, Gampaha records an average high-temperature of a still hot 32°C (89.6°F), showing a gentle shift from the preceding month. Gampaha records a steady low-temperature average of 26°C (78.8°F) during April.

Heat index

In April, the heat index is appraised at a blistering 43°C (109.4°F). Take note: Heat exhaustion and heat cramps are expected. Heatstroke can occur with prolonged effort.
Heat index determinations are made taking into account the shade and light air movements. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.

Humidity

In April, the average relative humidity is 77%.

Rainfall

In April, the rain falls for 23.4 days. Throughout April, 112mm (4.41") of precipitation is accumulated. Throughout the year, there are 265.4 rainfall days, and 1744mm (68.66") of precipitation is accumulated.

Daylight

In Gampaha, Sri Lanka, the average length of the day in April is 12h and 17min.
On the first day of the month, sunrise is at 06:07 and sunset at 18:19. On the last day of April, in Gampaha, sunrise is at 05:55 and sunset at 18:18 +0530.

Sunshine

January through April, with an average of 9.2h of sunshine, are months with the most sunshine in Gampaha.

UV index

The months with the highest UV index are January through April, July, September, November and December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A daily high UV index of 7 in April leads to these guidelines:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.