Colombo
Sri Lanka
Long-term weather forecast
Long-term weather forecast

April weather forecast and climate
Colombo, Sri Lanka

Statues on the Seema Malaka Temple in Colombo, Sri Lanka, overlooking the Beira Lake, and a view of the tall buildings of Colombo
Statues on the Seema Malaka Temple in Colombo, Sri Lanka, overlooking the Beira Lake, and a view of the tall buildings of Colombo
Abril, like Marzo, is another hot spring month in Colombo, Sri Lanka, with temperature in the range of an average low of 24.6°C (76.3°F) and an average high of 31.8°C (89.2°F).

Temperature

The warmest month is Abril, with an average high-temperature of 31.8°C (89.2°F) and an average low-temperature of 24.6°C (76.3°F).

Heat index

The average heat index in Abril is evaluated at a blistering 41.7°C (107.1°F). Beware - heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'felt air temperature', 'feels like', or 'apparent temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. This effect is individual, with diverse people perceiving weather differently for numerous reasons (clothing, differences in body mass, height, and shape, pregnancy), and activity. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

The average relative humidity in Colombo is 75%.

Rainfall

In Colombo, during Abril, the rain falls for 14 days and regularly aggregates up to 245.6mm (9.67") of precipitation. Throughout the year, in Colombo, there are 145 rainfall days, and 2523.7mm (99.36") of precipitation is accumulated.

Sea temperature

The month with the warmest seawater in Colombo is Abril, with an average sea temperature of 29.6°C (85.3°F).
Note: For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

In Colombo, Sri Lanka, the average length of the day is 12.3h.

Sunshine

In Colombo, Sri Lanka, the average sunshine is 7.8h.

UV index

Febrero through Octubre, with an average maximum UV index of 12, are months with the highest UV index. A UV Index of 11, and more, symbolizes an ultimate health vulnerability from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: In Abril, the average maximum UV index of 12 translate into the following recommendations:
Take all required precautions, as unprotected skin and eyes can burn in minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the warmest month in Colombo?

The warmest month is Abril, with an average high-temperature of 31.8°C (89.2°F) and an average low-temperature of 24.6°C (76.3°F).

What is the temperature in Abril in Colombo?

The average high-temperature, in Abril, is 31.8°C (89.2°F), while the average low-temperature is 24.6°C (76.3°F). In Abril, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), that takes the relative humidity and factores it into the air temperature reading, is calculated to 41.7°C (107.1°F).

What is the average humidity in Abril in Colombo?

In Colombo, the average relative humidity in Abril is 75%.

How many days does it rain in Abril in Colombo?

In Abril, in Colombo, Sri Lanka, the rain falls for 14 days. Throughout Abril, 245.6mm (9.67") of precipitation is accumulated.

When is the sea warmest in Colombo?

The month with the warmest seawater is Abril, with an average sea temperature of 29.6°C (85.3°F).

How warm is the water in Abril in Colombo?

In Colombo, in Abril, the average water temperature is 29.6°C (85.3°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

How many hours of daylight does Colombo have in Abril?

In Colombo, Sri Lanka, the average length of the day in Abril is 12.3h.

How many hours of sunshine does Colombo have in Abril?

In Colombo, Sri Lanka, the average sunshine in Abril is 7.8h.

When is the highest UV index in Colombo?

Febrero through Octubre, with an average maximum UV index of 12, are months with the highest UV index in Colombo.

What is the UV index reading in Abril in Colombo?

The average daily maximum UV index in Abril in Colombo, Sri Lanka, is 12. A UV Index value of 11, and more, symbolizes an extreme health vulnerability from unprotected exposure to the UV radiation.
Average temperature in April - Colombo, Sri Lanka
  • Average high temperature in April: 31.8°C

The warmest month (with the highest average high temperature) is April (31.8°C).
Months with the lowest average high temperature are July, August and October (30°C).

  • Average low temperature in April: 24.6°C

Months with the highest average low temperature are May and June (25.5°C).
The coldest month (with the lowest average low temperature) is January (22.3°C).

Average humidity in April - Colombo, Sri Lanka
  • Average humidity in April: 75%

The month with the highest relative humidity is June (79%).
Months with the lowest relative humidity are January and February (69%).

Average rainfall in April - Colombo, Sri Lanka
  • Average rainfall in April: 245.6mm

The wettest month (with the highest rainfall) is November (414.4mm).
The driest month (with the lowest rainfall) is January (58.2mm).

Average rainfall days in April - Colombo, Sri Lanka
  • Average rainfall days in April: 14 days

The month with the highest number of rainy days is October (17 days).
Months with the lowest number of rainy days are January and February (5 days).

Average sea temperature in April - Colombo, Sri Lanka
  • Average sea temperature in April: 29.6°C

The best month for swimming (with the highest average sea temperature) is April (29.6°C).
The coldest month (with the lowest average sea temperature) is August (27.2°C).

Average daylight in April / Average sunshine in April - Colombo, Sri Lanka
  • Average daylight in April: 12.3h

Months with the longest days are June and July (Average daylight: 12.5h).
The month with shortest days is December (Average daylight: 11.7h).

  • Average sunshine in April: 7.8h

The month with most sunshine is March (Average sunshine: 8.9h).
The month with least sunshine is September (Average sunshine: 6.3h).

Average UV index in April - Colombo, Sri Lanka
  • Average UV index in April: 12

Months with the highest UV index are February, March, April, May, June, July, August, September and October (UV index 12).
Months with the lowest UV index are January, November and December (UV index 11).