May weather forecast
Rathkarawwa, Sri Lanka

May, the last month of the spring in Rathkarawwa, is also a hot month, with an average temperature varying between 30.8°C (87.4°F) and 26.7°C (80.1°F).

Temperature

The commencement of May records an average high-temperature of a still tropical 30.8°C (87.4°F), barely varying from April's 31.1°C (88°F). The nighttime temperature demonstrates a marginal decline, averaging at a moderately hot 26.7°C (80.1°F) during May.

Heat index

May's average heat index is evaluated at a fiery hot 39°C (102.2°F). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.
Know that the heat index computations account for shaded terrains and slight winds. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', reflects the blend of air temperature and relative humidity to give a temperature impression. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

In Rathkarawwa, the average relative humidity in May is 77%.

Rainfall

In Rathkarawwa, in May, during 17.8 rainfall days, 72mm (2.83") of precipitation is typically accumulated. In Rathkarawwa, during the entire year, the rain falls for 192.9 days and collects up to 942mm (37.09") of precipitation.

Daylight

The average length of the day in May is 12h and 26min.
On the first day of May in Rathkarawwa, sunrise is at 05:52 and sunset at 18:14. On the last day of the month, sunrise is at 05:49 and sunset at 18:18 +0530.

Sunshine

In Rathkarawwa, the average sunshine in May is 10.9h.

UV index

The months with the highest UV index in Rathkarawwa are January through September, November and December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: In May, a daily UV index of 7 turns into the following recommendations:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.