May weather forecast
Wellaweediya, Sri Lanka

The last month of the spring, May, is also a hot month in Wellaweediya, Sri Lanka, with an average temperature fluctuating between 26.4°C (79.5°F) and 30.8°C (87.4°F).

Temperature

The transition from April to May sees average high-temperatures adjusting to a still hot 30.8°C (87.4°F), from a not significantly different 32°C (89.6°F). In Wellaweediya, May nights maintain a consistent temperature, with an average low of 26.4°C (79.5°F).

Heat index

For most parts of May, the heat index is calculated to be a blisteringly hot 40°C (104°F). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
Observations indicate that the heat index values are for shady locations with light wind. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', determines the feeling of heat when you account for the relative humidity. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.

Humidity

In May, the average relative humidity is 80%.

Rainfall

In Wellaweediya, in May, it is raining for 26.3 days, with typically 204mm (8.03") of accumulated precipitation. In Wellaweediya, Sri Lanka, during the entire year, the rain falls for 265.4 days and collects up to 1744mm (68.66") of precipitation.

Daylight

The average length of the day in May is 12h and 27min.
On the first day of May in Wellaweediya, sunrise is at 05:56 and sunset at 18:19. On the last day of the month, sunrise is at 05:52 and sunset at 18:23 +0530.

Sunshine

In May, the average sunshine in Wellaweediya is 8.8h.

UV index

The months with the lowest UV index in Wellaweediya are May, June, August and October, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: A daily high UV index of 6 in May leads to these guidelines:
Prevent overexposure. Protection from the sun's harmful effects is needed. 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. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.