June weather forecast
Vankalai, Sri Lanka

June, the first month of the summer in Vankalai, is still a hot month, with an average temperature ranging between max 30.5°C (86.9°F) and min 27.8°C (82°F).

Temperature

June's commencement is accompanied by an average high-temperature of a still tropical 30.5°C (86.9°F), diverging marginally from May's 31.2°C (88.2°F). The nighttime temperature in Vankalai demonstrates a marginal decline, averaging at a warm 27.8°C (82°F) during June.

Heat index

In June, the heat index is calculated to be a sweltering 38°C (100.4°F). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.
Heat index readings emphasize conditions of light breezes and shaded spots. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a composite of temperature and humidity figures to convey how warm it feels. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely significant for children. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

In June, the average relative humidity is 76%.

Rainfall

June is the month with the least rainfall. Rain falls for 11.3 days and accumulates 28mm (1.1") 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 June in Vankalai, sunrise is at 05:49 and sunset at 18:26. On the last day of the month, sunrise is at 05:54 and sunset at 18:33 +0530.

Sunshine

June has the most sunshine of the year, with an average of 11.3h of sunshine.

UV index

January through October and December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 7 during June leads to these advisories:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.