June weather forecast
Rathkarawwa, Sri Lanka

The first month of the summer, June, is still a hot month in Rathkarawwa, Sri Lanka, with an average temperature ranging between min 26.6°C (79.9°F) and max 30.6°C (87.1°F).

Temperature

The transition from May to June sees an average high-temperature of a still tropical 30.6°C (87.1°F), indicating a minor variance from the prior month. Rathkarawwa's nighttime temperature in June experiences a slight dip from daytime highs, falling to an average of 26.6°C (79.9°F).

Heat index

The heat index for June is calculated to be a fiery hot 38°C (100.4°F). Take extra safety measures to prevent heat exhaustion and heat cramps. Heatstroke could follow lengthy activity.
In reference to the heat index, it's for places in shade and with a slight wind. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', reflects the blend of air temperature and relative humidity to give a temperature impression. 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. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

In Rathkarawwa, Sri Lanka, the average relative humidity in June 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

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

Sunshine

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

UV index

January through September, November and December, 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 average person.
Note: The daily maximum UV index of 7 in June interprets into the following advice:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.