June weather forecast
Uppukkulam, Sri Lanka

The first month of the summer, June, is still a tropical month in Uppukkulam, Sri Lanka, with an average temperature varying between 30.5°C (86.9°F) and 27.8°C (82°F).

Temperature

Uppukkulam experiences a subtle adjustment in high-temperatures to a still tropical 30.5°C (86.9°F) with the onset of June, maintaining near parity with May's 31.2°C (88.2°F). Maintaining close parity with daytime warmth, the average nocturnal temperature during June stays at a moderately hot 27.8°C (82°F).

Heat index

In June, the heat index is evaluated at a torrid 38°C (100.4°F). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is an estimation of the warmth sensation when considering humidity levels. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

The average relative humidity in June is 76%.

Rainfall

The month with the least rainfall is June, when the rain falls for 11.3 days and typically collects 28mm (1.1") of precipitation.

Daylight

June has the longest days of the year, with an average of 12h and 36min of daylight.
On the first day of June in Uppukkulam, Sri Lanka, 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

With an average of 11.3h of sunshine, June has the most sunshine of the year in Uppukkulam.

UV index

January through October and December, with an average maximum UV index of 7, are months with the highest UV index in Uppukkulam. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum high daily UV index of 7 during June translates into the following directions:
Deter overexposure. Protecting against the sun's effects is essential. 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. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.