May weather forecast
Hambantota, Sri Lanka

In May, the weather in Hambantota shows a downward trend in rainfall from 109mm (4.29") to 72mm (2.83"), signaling easing of the prior heavy rains. Nonetheless, the high humidity persists, making this month fairly humid. The average temperatures remain on the higher side, although there is a bit of a dip from April. Despite decreased rainfall, the number of rainfall days fails to decrease significantly, leading to scattered showers throughout May. The decline in rainfall volume despite persistent rainy days suggests the prevalence of light showers.

Temperature

The commencement of May in Hambantota introduces an average high-temperature of a still hot 30.8°C (87.4°F), closely mirroring the preceding month. Hambantota registers a steady nighttime temperature averaging a warm 26.7°C (80.1°F) throughout May.

Heat index

May's heat index is calculated to be a very hot 39°C (102.2°F). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.
Always consider that heat index estimations are for light winds and places in the shade. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely significant for children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.

Humidity

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

Rainfall

In Hambantota, during May, the rain falls for 17.8 days and regularly aggregates up to 72mm (2.83") of precipitation. Throughout the year, in Hambantota, there are 192.9 rainfall days, and 942mm (37.09") of precipitation is accumulated.

Daylight

In Hambantota, the average length of the day in May is 12h and 24min.
On the first day of May in Hambantota, sunrise is at 05:52 and sunset at 18:12. On the last day of the month, sunrise is at 05:49 and sunset at 18:16 +0530.

Sunshine

The average sunshine in May is 10.9h.

UV index

The months with the highest UV index 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 threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum daily UV index, 7 in May, converts into the following recommendations:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Stay sun-safe with clothing that is both closely woven and worn loosely.