June weather forecast
Hiriwadunna, Sri Lanka

The first month of the summer, June, is also a hot month in Hiriwadunna, Sri Lanka, with an average temperature ranging between max 33.6°C (92.5°F) and min 24.8°C (76.6°F).

Temperature

June registers an average high-temperature of a still hot 33.6°C (92.5°F), slightly varied from May's 34.2°C (93.6°F). Hiriwadunna experiences an average nighttime temperature of 24.8°C (76.6°F) in the month of June.

Heat index

For most parts of June, the heat index is appraised at a blisteringly hot 44°C (111.2°F). Be on the lookout: Heat cramps and heat exhaustion are anticipated. Continued exertion can result in heatstroke.
In reference to the heat index, it's for places in shade and with a slight wind. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

The months with the lowest humidity in Hiriwadunna are June through September, with an average relative humidity of 67%.

Rainfall

June is the month with the least rainfall in Hiriwadunna, Sri Lanka. Rain falls for 7.8 days and accumulates 15mm (0.59") of precipitation.

Daylight

The month with the longest days is June, with an average of 12h and 36min of daylight.
On the first day of the month, sunrise is at 05:48 and sunset at 18:21. On the last day of June, in Hiriwadunna, sunrise is at 05:53 and sunset at 18:28 +0530.

Sunshine

The month with the most sunshine is June, with an average of 11.3h of sunshine.

UV index

February through October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum high daily UV index of 7 during June translates into the following directions:
Take precautions against overexposure. Protection against sun damage is needed. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete 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.