June weather forecast
Unawatuna, Sri Lanka

In June, Unawatuna experiences a slight decrease in rainfall, a welcoming relief from May's peak rainfall. The wind speeds surge this month to 20.2km/h (12.6mph), a year's highest, making the coastal town a favorite amongst wind-sport enthusiasts. Maximum daylight at 12.5 hours allows for extended outdoor activities. Similar weather persists from May, although with some respite from the rain. As July approaches, the weather continues to be predictable with a slight tilt towards reduced precipitation.

Temperature

The transition into June is marked with an average high-temperature of a still warm 28.8°C (83.8°F), showing an insignificant shift from May's 29.5°C (85.1°F). Unawatuna registers a small shift from peak daytime temperatures, with a consistent average low-temperature of 26.6°C (79.9°F) during June.

Heat index

For June, the heat index is computed to be a torrid 35°C (95°F). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.
Heat index values are typically calculated for conditions of shade and a light breeze. 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 'apparent temperature' or 'felt air temperature', gives a temperature feeling by integrating air temperature and humidity. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
Evaporating sweat is a key way the human body dispels excessive warmth, all thanks to the process of perspiration. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

The months with the highest humidity are June and September, with an average relative humidity of 82%.

Rainfall

In Unawatuna, in June, during 28 rainfall days, 250mm (9.84") of precipitation is typically accumulated. Throughout the year, there are 286.9 rainfall days, and 1974mm (77.72") of precipitation is accumulated.

Sea temperature

January, February, June through October and December, with an average sea temperature of 28°C (82.4°F), are months with the coldest seawater.
Note: Temperatures between 25°C (77°F) and 29°C (84.2°F) in water are ideal for swimming, diving, and other activities, providing enjoyment and comfort for extended durations.

Daylight

With an average of 12h and 30min of daylight, June has the longest days of the year in Unawatuna.
On the first day of June, sunrise is at 05:53 and sunset at 18:20. On the last day of the month, sunrise is at 05:58 and sunset at 18:26 +0530.

Sunshine

In June, the average sunshine is 9.2h.

UV index

The months with the highest UV index are January through April, June through August, October through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: In June, an average UV index of 7 transforms into the following instructions:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Alert! Sand and water increase UV exposure due to their reflective properties.