May weather forecast
Unawatuna, Sri Lanka

The weather in May in Unawatuna stands out for its significant rise in precipitation to 302mm (11.89"), marking it as the wettest month of the year. Despite the increase in rainfall, the temperatures remain relatively stable, maintaining the region's tropical charm. In rhythm with the waves of the sea, whose temperature hovers around 29°C (84.2°F), locals and tourists find solace along the sandy shores. A comparison with April's weather reveals a dramatic increase in rainfall. Moving forward, June's forecast will offer a slight dip in rainfall, ensuring a comfortable weather continuity.

Temperature

Unawatuna sees the arrival of May with an average high-temperature of a moderately hot 29.5°C (85.1°F), indicating a subtle variation from April. Unawatuna reports an average low-temperature of 26.7°C (80.1°F) during the subtly cooler May nights.

Heat index

The average heat index in May is appraised at a sweltering 36°C (96.8°F). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', represents the fusion of temperature and moisture in the air to suggest how warm it feels. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
To offset high temperatures, the human body releases sweat which, upon evaporation, cools it down. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

In Unawatuna, the average relative humidity in May is 81%.

Rainfall

The month with the most rainfall in Unawatuna, Sri Lanka, is May, when the rain falls for 27.7 days and typically aggregates up to 302mm (11.89") of precipitation.

Sea temperature

In Unawatuna, the average seawater temperature in May is 29°C (84.2°F).
Note: For any water activity, having surface water temperatures from 25°C (77°F) to 29°C (84.2°F) is considered outstanding and highly delightful for lengthened periods.

Daylight

In May, the average length of the day in Unawatuna, Sri Lanka, is 12h and 24min.
On the first day of May, sunrise is at 05:55 and sunset at 18:16. On the last day of the month, sunrise is at 05:53 and sunset at 18:20 +0530.

Sunshine

The average sunshine in May is 9h.

UV index

May and September, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum daily UV index, 6 in May, converts into the following recommendations:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Heads up! Sand and water reflection magnifies the UV exposure from the Sun.