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 average high-temperature in Unawatuna during June is a still moderately hot 28.8°C (83.8°F), almost matching the conditions of the preceding month. In Unawatuna, the nocturnal temperatures throughout June show a marginal dip from the daytime averages, settling at a still moderately hot 26.6°C (79.9°F).

Heat index

The heat index value during June is appraised at a fiery hot 35°C (95°F). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
When assessing, remember that heat index measurements are for light winds and shaded spots. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is an estimation of the warmth sensation when considering humidity levels. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. 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. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.

Humidity

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

Rainfall

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

Sea temperature

The months with the coldest seawater are January, February, June through October and December, with an average sea temperature of 28°C (82.4°F).
Note: For swimming, diving, or other water activities, temperatures from 25°C (77°F) to 29°C (84.2°F) provide the most enjoyable experience for extended periods without discomfort.

Daylight

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

Sunshine

The average sunshine in June in Unawatuna, Sri Lanka, 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 reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the average person.
Note: In June, the maximum UV index of 7 suggests this advice:
Ward off overexposure. Defence against solar harm is crucial. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Note! The Sun's UV radiation gets intensified with the reflection from sand and water.