June weather forecast
Rathkarawwa, Sri Lanka

The first month of the summer, June, is also a hot month in Rathkarawwa, Sri Lanka, with temperature in the range of an average low of 26.6°C (79.9°F) and an average high of 30.6°C (87.1°F).

Temperature

June's onset records an average high-temperature of a still tropical 30.6°C (87.1°F), a near match to May's 30.8°C (87.4°F). Nights in June exhibit a minor reduction to an average low temperature of 26.6°C (79.9°F).

Heat index

The heat index for June is evaluated at a fiery hot 38°C (100.4°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Realize that the values for the heat index are set for shaded places and light winds. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant 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.
By perspiring, the human body can shed its excessive warmth since evaporated sweat cools it off. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

The average relative humidity in June in Rathkarawwa is 75%.

Rainfall

In Rathkarawwa, during June, the rain falls for 10.7 days and regularly aggregates up to 20mm (0.79") of precipitation. Throughout the year, there are 192.9 rainfall days, and 942mm (37.09") of precipitation is accumulated.

Daylight

June has the longest days of the year in Rathkarawwa, Sri Lanka, with an average of 12h and 30min of daylight.
On the first day of the month, sunrise is at 05:49 and sunset at 18:19. On the last day of June, sunrise is at 05:54 and sunset at 18:25 +0530.

Sunshine

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

UV index

The months with the highest UV index are January through September, November and December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: An average maximum UV index of 7 in June leads to these recommendations:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.