May weather forecast
Bentota, Sri Lanka

Bentota's weather shifts more drastically in May as it enters the height of the rainy season. Visitors in May should be prepared to experience the tropical monsoon that brings over twice the rainfall of April with 303mm (11.93") received. The weather conditions often present an offbeat atmosphere that can be appealing to tourists seeking a unique experience. Despite the higher precipitation, the warm temperatures remain consistent creating a humid but bearable environment. Rest assured, this weather shouldn’t dismay travelers, due to the steady progression of rain that can create a serene ambiance.

Temperature

Bentota registers an average high-temperature of a still hot 30.2°C (86.4°F) with the arrival of May, showing minor deviation from the preceding month. Nighttime readings in Bentota during May register a minimal drop from daytime highs, averaging at a warm 26.3°C (79.3°F).

Heat index

During May, the heat index is estimated at a fiery hot 39°C (102.2°F). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', joins air temperature with relative humidity to produce a temperature perception for humans. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
When temperatures rise, the human body turns to perspiration, using the cooling power of evaporating sweat. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

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

Rainfall

In Bentota, during May, the rain falls for 28 days and regularly aggregates up to 303mm (11.93") of precipitation. In Bentota, during the entire year, the rain falls for 273.8 days and collects up to 2059mm (81.06") of precipitation.

Sea temperature

In Bentota, the average seawater temperature in May is 29.1°C (84.4°F).
Note: Water activities in surface temperatures between 25°C (77°F) and 29°C (84.2°F) are seen as exceptional and extremely agreeable for lengthened time spans.

Daylight

In May, the average length of the day is 12h and 25min.
On the first day of May in Bentota, sunrise is at 05:56 and sunset at 18:17. On the last day of the month, sunrise is at 05:53 and sunset at 18:21 +0530.

Sunshine

In May, the average sunshine in Bentota is 8.7h.

UV index

The months with the lowest UV index are May, June and August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: In May, the UV index of 6 transforms into the following advice:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Be wary! Reflections from sand and water make UV radiation more intense.