June weather forecast
Sirimalwatta, Sri Lanka

June, the first month of the summer in Sirimalwatta, is also a moderately hot month, with an average temperature fluctuating between 29.3°C (84.7°F) and 21.8°C (71.2°F).

Temperature

Sirimalwatta's June average high-temperature settles at a moderately hot 29.3°C (84.7°F), showing a near match with the preceding month. Sirimalwatta's nighttime temperature in June drops to an average of 21.8°C (71.2°F).

Heat index

The heat index value during June is evaluated at a fiery hot 35°C (95°F). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. 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 remain especially vital for babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
Normally, the human body cools itself through perspiration, which removes excessive heat by evaporating sweat. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

The average relative humidity in June in Sirimalwatta, Sri Lanka, is 77%.

Rainfall

In Sirimalwatta, during June, the rain falls for 25.1 days and regularly aggregates up to 57mm (2.24") of precipitation. Throughout the year, there are 278.4 rainfall days, and 1466mm (57.72") of precipitation is accumulated.

Daylight

The month with the longest days is June, with an average of 12h and 30min of daylight.
On the first day of the month, sunrise is at 05:49 and sunset at 18:20. On the last day of June, in Sirimalwatta, sunrise is at 05:54 and sunset at 18:27 +0530.

Sunshine

The month with the most sunshine in Sirimalwatta is June, with an average of 10.8h of sunshine.

UV index

January through September, November and December, with an average maximum UV index of 6, are months with the highest UV index in Sirimalwatta. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum UV index, 6 during June, leads to the following recommendations:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.