June weather forecast
Kollupitiya, Sri Lanka

June, the first month of the summer in Kollupitiya, is also a moderately hot month, with an average temperature ranging between max 29.3°C (84.7°F) and min 25.8°C (78.4°F).

Temperature

June observes an average high-temperature of a warm 29.3°C (84.7°F), marking an insignificant difference from May's 30.6°C (87.1°F). June nights witness a mild cool down to an average low of 25.8°C (78.4°F).

Heat index

During June, the heat index is evaluated at a sweltering 36°C (96.8°F). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.
Note that heat index values are valued for light wind and location in the shade. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', takes into account both air temperature and humidity to illustrate what people actually feel. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. With excessive moisture in the atmosphere, the effectiveness of the evaporation process is decreased, causing the body to cool down less efficiently, leading to a sensation of overheating. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

June through August, with an average relative humidity of 83%, are the most humid months in Kollupitiya.

Rainfall

June is the month with the most rainfall in Kollupitiya. Rain falls for 29.3 days and accumulates 341mm (13.43") of precipitation.

Daylight

The month with the longest days is June, with an average of 12h and 30min of daylight.
On the first day of June in Kollupitiya, sunrise is at 05:53 and sunset at 18:23. On the last day of the month, sunrise is at 05:58 and sunset at 18:29 +0530.

Sunshine

The average sunshine in June is 8h.

UV index

The months with the lowest UV index in Kollupitiya, Sri Lanka, are May, June, August and October, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for average individuals.
Note: A maximum high UV index of 6 in June translates into the following recommendations:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.