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

June weather forecast and climate
Dehiwala, Sri Lanka

June, the first month of the summer, in Dehiwala, is still a tropical month, with temperature in the range of an average low of 25°C (77°F) and an average high of 30°C (86°F).

Temperature

The coldest months are June through December, with an average high-temperature of 30°C (86°F).

Rainfall

In Dehiwala, Sri Lanka, it is raining for 15 days, with typically 186mm (7.3") of accumulated precipitation. Throughout the year, in Dehiwala, there are 139 rainfall days, and 2402mm (94.6") of precipitation is accumulated.

Sea temperature

In June, the average sea temperature is 28.2°C (82.8°F).
Note: 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.

Daylight

Months with the longest days are June and July, with an average of 12.5h of daylight.

Sunshine

Months with the least sunshine in Dehiwala are May through October, with an average of 6h of sunshine.

UV index

Months with the highest UV index are February through October, with an average maximum UV index of 12. A UV Index estimate of 11, and higher, represents an ultimate health vulnerability from the exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 12 transform into the following instructions:
Take all necessary precautions, as unprotected skin 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 coldest month in Dehiwala?

June through December, with an average high-temperature of 30°C (86°F), are the coldest months in Dehiwala.

What is the temperature in June in Dehiwala?

In June, in Dehiwala, Sri Lanka, the average high-temperature is 30°C (86°F), and the average low-temperature is 25°C (77°F).

How much does it rain in Dehiwala in June?

In Dehiwala, during June, the rain falls for 15 days and regularly aggregates up to 186mm (7.3") of precipitation.

What is the water temperature in June in Dehiwala?

In Dehiwala, the average seawater temperature in June is 28.2°C (82.8°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.

When are the longest days in Dehiwala?

June and July, with an average of 12.5h of daylight, are months with the longest days.

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

The average length of the day in June is 12.5h.

What is the month with the least sunshine in Dehiwala?

May through October, with an average of 6h of sunshine, are months with the least sunshine.

How many hours of sunshine does Dehiwala have in June?

In June, the average sunshine is 6h.

When is the highest UV index in Dehiwala?

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

How high is the UV index in June in Dehiwala?

The average daily maximum UV index in June in Dehiwala, Sri Lanka, is 12. A UV Index estimate of 11, and higher, represents an excessive health risk from unsafe exposure to the Sun's UV rays.
Average temperature in June - Dehiwala, Sri Lanka
  • Average high temperature in June: 30°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 June: 25°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 June - Dehiwala, Sri Lanka
  • Average rainfall in June: 186mm

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

Average rainfall days in June - Dehiwala, Sri Lanka
  • Average rainfall days in June: 15 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 June - Dehiwala, Sri Lanka
  • Average sea temperature in June: 28.2°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 June / Average sunshine in June - Dehiwala, Sri Lanka
  • Average daylight in June: 12.5h

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 June: 6h

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 June - Dehiwala, Sri Lanka
  • Average UV index in June: 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).