Dehiwala
Sri Lanka
Long-term weather forecast
Long-term weather forecast

April weather forecast and climate
Dehiwala, Sri Lanka

April, the same as March, in Dehiwala, Sri Lanka, is another tropical spring month, with temperature in the range of an average high of 32°C (89.6°F) and an average low of 24°C (75.2°F).

Temperature

The warmest months are March and April, with an average high-temperature of 32°C (89.6°F).

Rainfall

In Dehiwala, during April, the rain falls for 14 days and regularly aggregates up to 250mm (9.8") of precipitation. Throughout the year, there are 139 rainfall days, and 2402mm (94.6") of precipitation is accumulated.

Sea temperature

The month with the warmest seawater in Dehiwala is April, with an average sea temperature of 29.6°C (85.3°F). 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 Dehiwala, Sri Lanka, the average length of the day in April is 12.3h.

Sunshine

The average sunshine in April is 8h.

UV index

February through October, with an average maximum UV index of 12, are months with the highest UV index in Dehiwala. A UV Index estimate of 11, and higher, represents an excessive health risk from unsafe exposure to the UV radiation for the average person.
The daily maximum UV index of 12 in April interpret into the following advice:
Practice all essential precautions. Protection against sun damage is crucial. 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. 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 strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the warmest month in Dehiwala?

Warmest months in Dehiwala, Sri Lanka, are March and April, with an average high-temperature of 32°C (89.6°F).

What is the temperature in April in Dehiwala?

In April, in Dehiwala, Sri Lanka, the average high-temperature is 32°C (89.6°F), and the average low-temperature is 24°C (75.2°F).

How much does it rain in Dehiwala in April?

In Dehiwala, in April, it is raining for 14 days, with typically 250mm (9.8") of accumulated precipitation.

What is the month with the warmest sea water in Dehiwala?

The month with the warmest seawater is April, with an average sea temperature of 29.6°C (85.3°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

What is the water temperature in April in Dehiwala?

In April, the average sea temperature in Dehiwala 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.

What is the average length of the day in April in Dehiwala?

The average length of the day in April in Dehiwala is 12.3h.

How long on average sun shines in April in Dehiwala?

The average sunshine in April is 8h.

What are the months with the highest UV index in Dehiwala?

February through October, with an average maximum UV index of 12, are months with the highest UV index in Dehiwala, Sri Lanka.

What is the UV index reading in April in Dehiwala?

In Dehiwala, Sri Lanka, the average daily maximum UV index in April is 12. A UV Index reading of 11, and higher, represents an extreme health threat from unsafe exposure to the Sun's UV rays.
Average temperature in April - Dehiwala, Sri Lanka
  • Average high temperature in April: 32°C

Warmest months (with the highest average high temperature) are March and April (32°C).
Months with the lowest average high temperature are June, July, August, September, October, November and December (30°C).

  • Average low temperature in April: 24°C

Months with the highest average low temperature are May, June, July, August and September (25°C).
Coldest months (with the lowest average low temperature) are January and December (22°C).

Average rainfall in April - Dehiwala, Sri Lanka
  • Average rainfall in April: 250mm

The wettest month (with the highest rainfall) is May (382mm).
The driest month (with the lowest rainfall) is January (55mm).

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

The month with the highest number of rainy days is October (16 days).
Months with the lowest number of rainy days are January and February (5 days).

Average sea temperature in April - Dehiwala, 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 - Dehiwala, 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: 8h

Months with most sunshine are February and March (Average sunshine: 9h).
Months with least sunshine are May, June, July, August, September and October (Average sunshine: 6).

Average UV index in April - Dehiwala, 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).