April weather forecast
Galaha, Sri Lanka

April, like March, is another hot spring month in Galaha, Sri Lanka, with temperature in the range of an average low of 20.8°C (69.4°F) and an average high of 31.2°C (88.2°F).

Temperature

A minimal variation is noted in Galaha's average high-temperature at the onset of April, reaching a still hot 31.2°C (88.2°F) from March's 31.5°C (88.7°F). Galaha cools down to an average low-temperature of 20.8°C (69.4°F) throughout the month of April.

Heat index

The heat index value for April is appraised at a blistering 41°C (105.8°F). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. 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 'real feel', gives a temperature feeling by integrating air temperature and humidity. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

In April, the average relative humidity is 79%.

Rainfall

In Galaha, during April, the rain falls for 27 days and regularly aggregates up to 152mm (5.98") of precipitation. Throughout the year, there are 278.4 rainfall days, and 1466mm (57.72") of precipitation is accumulated.

Daylight

In April, the average length of the day in Galaha is 12h and 17min.
On the first day of April in Galaha, sunrise is at 06:05 and sunset at 18:16. On the last day of the month, sunrise is at 05:53 and sunset at 18:15 +0530.

Sunshine

In Galaha, Sri Lanka, the average sunshine in April is 9.4h.

UV index

The months with the highest UV index are January through September, November and December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.
Note: The maximum UV index of 6 during April translates into these guidelines:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays.