May weather forecastKottawa, Sri Lanka

Weather in May

The last month of the spring, May, is also a hot month in Kottawa, Sri Lanka, with an average temperature ranging between max 30.3°C (86.5°F) and min 26.4°C (79.5°F).

Temperature

May's arrival registers an average high-temperature of a still hot 30.3°C (86.5°F), closely aligning with the temperature of the previous month. A modest decline from daytime high temperatures is noticed in May, marking the average low at a warm 26.4°C (79.5°F).

Heat index

The average heat index in May is appraised at a fiery hot 39°C (102.2°F). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
Note that heat index values are valued for light wind and location in the shade. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', measures the perceived warmth when incorporating the humidity present in the air. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
Perspiring is a crucial mechanism for the human body, allowing it to release excessive warmth through evaporating sweat. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

In Kottawa, 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, in Kottawa, there are 272.3 rainfall days, and 2039mm (80.28") of precipitation is accumulated.

Daylight

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

Sunshine

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 of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The daily high UV index of 6 during May translates into the following recommendations:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.