May weather forecast
Nampamunuwa, Sri Lanka

May, the last month of the spring in Nampamunuwa, is another tropical month, with temperature in the range of an average low of 26.4°C (79.5°F) and an average high of 30.3°C (86.5°F).

Temperature

Nampamunuwa's weather in May, with an average high-temperature of a still hot 30.3°C (86.5°F), subtly shifts from April's 31.4°C (88.5°F). In Nampamunuwa, the May nights are characterized by an average low-temperature of 26.4°C (79.5°F), a minor dip from daytime readings.

Heat index

For May, the heat index is calculated to be a fiery hot 39°C (102.2°F). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', represents the fusion of temperature and moisture in the air to suggest how warm it feels. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. When there is abundant moisture in the air, the body's cooling through the evaporation process becomes less effective, leading to the sensation of overheating. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

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

Rainfall

In May, the rain falls for 27.1 days. Throughout May, 279mm (10.98") of precipitation is accumulated. Throughout the year, there are 272.8 rainfall days, and 2100mm (82.68") of precipitation is accumulated.

Daylight

The average length of the day in May is 12h and 26min.
On the first day of May, sunrise is at 05:56 and sunset at 18:18. On the last day of the month, sunrise is at 05:53 and sunset at 18:22 +0530.

Sunshine

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

UV index

The months with the lowest UV index are May, June, August and October, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the average person.
Note: In May, the UV index of 6 transforms into the following advice:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.