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

June 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
The first month of the summer, Junio, is also a hot month in Colombo, Sri Lanka, with average temperature fluctuating between 30.4°C (86.7°F) and 25.5°C (77.9°F).

Temperature

In Colombo, Sri Lanka, the average high-temperature in Junio is practically the same as in Mayo - a still tropical 30.4°C (86.7°F). The average low-temperature, in Colombo, Sri Lanka, is 25.5°C (77.9°F).

Heat index

The average heat index in Junio is estimated at a torrid 38.6°C (101.5°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'apparent temperature', 'real feel', or 'feels like', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. This effect is individual, with diverse people perceiving weather differently for numerous reasons (clothing, differences in body mass, height, and shape, pregnancy), and activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index 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 normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

Junio is the most humid month, with an average relative humidity of 79%.

Rainfall

In Colombo, it is raining for 16 days, with typically 184.9mm (7.28") of accumulated precipitation. In Colombo, Sri Lanka, during the entire year, the rain falls for 145 days and collects up to 2523.7mm (99.36") of precipitation.

Sea temperature

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

Daylight

Junio and Julio, with an average of 12.5h of daylight, are months with the longest days.

Sunshine

In Colombo, the average sunshine is 6.5h.

UV index

Febrero through Octubre, with an average maximum UV index of 12, are months with the highest UV index in Colombo. A UV Index reading of 11, and higher, represents an excessive health risk from unsafe exposure to the UV radiation for average individuals.
Note: In Junio, 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. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. 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 temperature in Junio in Colombo?

In Junio, in Colombo, Sri Lanka, the average high-temperature is 30.4°C (86.7°F), and the average low-temperature is 25.5°C (77.9°F). The average heat index (a.k.a. 'feels like', 'felt air temperature'), that combines both air temperature and relative humidity, in Junio is evaluated at 38.6°C (101.5°F).

What is the most humid month in Colombo?

With an average relative humidity of 79%, Junio is the most humid month in Colombo.

What is the average humidity in Junio in Colombo?

In Junio, the average relative humidity is 79%.

How much does it rain in Colombo in Junio?

In Junio, in Colombo, the rain falls for 16 days. Throughout Junio, 184.9mm (7.28") of precipitation is accumulated.

What is the water temperature in Junio in Colombo?

In Junio, the average sea temperature 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 Colombo?

Junio and Julio, with an average of 12.5h of daylight, are months with the longest days in Colombo, Sri Lanka.

How many hours of daylight does Colombo have in Junio?

In Colombo, the average length of the day in Junio is 12.5h.

How many hours of sunshine does Colombo have in Junio?

In Colombo, Sri Lanka, the average sunshine in Junio is 6.5h.

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

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

How high is the UV index in Junio in Colombo?

In Colombo, Sri Lanka, the average daily maximum UV index in Junio is 12. A UV Index reading of 11, and higher, represents an ultimate hazard to health from unprotected exposure to the UV radiation.
Average temperature in June - Colombo, Sri Lanka
  • Average high temperature in June: 30.4°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 June: 25.5°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 June - Colombo, Sri Lanka
  • Average humidity in June: 79%

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

Average rainfall in June - Colombo, Sri Lanka
  • Average rainfall in June: 184.9mm

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 June - Colombo, Sri Lanka
  • Average rainfall days in June: 16 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 June - Colombo, 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 - Colombo, 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: 6.5h

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 June - Colombo, 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).