May weather forecast
Deliwala, Sri Lanka

May, the last month of the spring in Deliwala, is also a hot month, with an average temperature fluctuating between 21.8°C (71.2°F) and 30.1°C (86.2°F).

Temperature

As Deliwala welcomes May, the average high-temperature stabilizes at a still hot 30.1°C (86.2°F), showing little deviation from April's 31.2°C (88.2°F). Deliwala reports an average low-temperature of 21.8°C (71.2°F) during the nights of May.

Heat index

In May, the heat index is appraised at a fiery hot 38°C (100.4°F). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.

Humidity

In Deliwala, the average relative humidity in May is 80%.

Rainfall

In May, the rain falls for 28.6 days. Throughout May, 163mm (6.42") of precipitation is accumulated. In Deliwala, during the entire year, the rain falls for 278.9 days and collects up to 1477mm (58.15") of precipitation.

Daylight

The average length of the day in May is 12h and 28min.
On the first day of May, sunrise is at 05:53 and sunset at 18:17. On the last day of the month, sunrise is at 05:50 and sunset at 18:21 +0530.

Sunshine

In Deliwala, the average sunshine in May is 10.4h.

UV index

January through September, November and December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The UV index of 6 during May translates into the following guidance:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. 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. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.