June weather forecast
Rajagiriya, Sri Lanka

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

Temperature

With the start of June, Rajagiriya measures an average high-temperature of a moderately hot 29.3°C (84.7°F), not significantly differing from May's 30.6°C (87.1°F). In Rajagiriya, June nights maintain a consistent temperature, with an average low of 25.8°C (78.4°F).

Heat index

The heat index value for June is estimated at a sweltering 36°C (96.8°F). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.

Humidity

The months with the highest humidity are June through August, with an average relative humidity of 83%.

Rainfall

The month with the most rainfall is June, when the rain falls for 29.3 days and typically aggregates up to 341mm (13.43") of precipitation.

Daylight

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

Sunshine

In June, the average sunshine in Rajagiriya, Sri Lanka, is 8h.

UV index

The months with the lowest UV index in Rajagiriya 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 vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: In June, a daily maximum UV index of 6 leads to the following instructions:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.