May weather forecastUkwatta, Sri Lanka

May

Weather in May

The last month of the spring, May, is another hot month in Ukwatta, Sri Lanka, with an average temperature varying between 30.6°C (87.1°F) and 26.3°C (79.3°F).

Temperature

The onset of May marks an average high-temperature of a still tropical 30.6°C (87.1°F), hardly differing from April's 31.8°C (89.2°F). During May, Ukwatta's temperature shows a minor deviation from daytime highs, falling to a steady low-temperature average of 26.3°C (79.3°F).

Heat index

May's heat index is appraised at an extremely hot 40°C (104°F). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.
Realize that the values for the heat index are set for shaded places and light winds. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is the outcome of merging air's temperature and its humidity metrics. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. 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.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

The average relative humidity in May is 81%.

Rainfall

In Ukwatta, during May, the rain falls for 28.8 days and regularly aggregates up to 306mm (12.05") of precipitation. In Ukwatta, during the entire year, the rain falls for 289.4 days and collects up to 2262mm (89.06") of precipitation.

Daylight

In Ukwatta, Sri Lanka, the average length of the day in May is 12h and 26min.
On the first day of May in Ukwatta, sunrise is at 05:55 and sunset at 18:17. On the last day of the month, sunrise is at 05:51 and sunset at 18:21 +0530.

Sunshine

In May, the average sunshine is 8.6h.

UV index

The months with the lowest UV index in Ukwatta 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 risk from exposure to the Sun's UV rays for average individuals.
Note: During May, 6 as the daily maximum UV index converts into the following advice:
Guard against overexposure. Protection from sun-induced harm is essential. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.

Updated: Feb 6, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In May, in Ukwatta, the average high-temperature is 30.6°C (87.1°F), and the average low-temperature is 26.3°C (79.3°F). In May, the average heat index (a.k.a. 'feels like', 'real feel'), which combines air temperature and relative humidity, is appraised at 40°C (104°F).

In May, the average relative humidity in Ukwatta, Sri Lanka, is 81%.

In Ukwatta, Sri Lanka, in May, during 28.8 rainfall days, 306mm (12.05") of precipitation is typically accumulated.

The average day length in May in Ukwatta is 12h and 26min.

In May, on the first day of the month, sunrise is at 05:55 and sunset at 18:17. On the last day of the month, in Ukwatta, sunrise is at 05:51 and sunset at 18:21 +0530.

In May, the average sunshine duration is 8.6h.

May, June, August and October, with an average maximum UV index of 6, are months with the lowest UV index.

In Ukwatta, the average daily maximum UV index in May is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A May J J A S O N D

Apr

May

Jun

Average high temperature

31.8°C

30.6°C

29.3°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

9.7km/h

13.8km/h

15.7km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

2.6

1.3

0.3

Average UV index

Average cloud cover

Average visibility

Average temperature in May
Ukwatta, Sri Lanka

Average high temperature in May: 30.6°C

The warmest months (with the highest average high temperature) are March and April (31.8°C).
The months with the lowest average high temperature are July and August (28.9°C).

Average low temperature in May: 26.3°C

The month with the highest average low temperature is May (26.3°C).
The coldest month (with the lowest average low temperature) is January (23.1°C).

Average pressure in May
Ukwatta, Sri Lanka

Average pressure in May: 1008.6mbar

The month with the highest atmospheric pressure is January (1011.6mbar).
The month with the lowest atmospheric pressure is May (1008.6mbar).

Average wind speed in May
Ukwatta, Sri Lanka

Average wind speed in May: 12.9km/h

The windiest month (with the highest average wind speed) is June (15.1km/h).
The calmest month (with the lowest average wind speed) is March (8km/h).

Average humidity in May
Ukwatta, Sri Lanka

Average humidity in May: 81%

The months with the highest relative humidity are June, July and August (83%).
The months with the lowest relative humidity are January and February (74%).

Average rainfall in May
Ukwatta, Sri Lanka

Average rainfall in May: 306mm

The wettest month (with the highest rainfall) is June (341mm).
The driest month (with the least rainfall) is January (40mm).

Average rainfall days in May
Ukwatta, Sri Lanka

Average rainfall days in May: 28.8 days

The month with the highest number of rainy days is August (30.2 days).
The month with the least rainy days is January (11.6 days).

Average daylight in May /
Average sunshine in May
Ukwatta, Sri Lanka

Average daylight in May: 12h and 24min

The month with the longest days is June (Average daylight: 12h and 30min).
The month with the shortest days is December (Average daylight: 11h and 42min).

Average sunshine in May: 8h and 36min

The month with the most sunshine is January (Average sunshine: 9h and 6min).
The month with the least sunshine is November (Average sunshine: 6h and 42min).

Average sunshine days in May
Ukwatta, Sri Lanka

Average sunshine days in May: 1.3 days

The month with the most sunshine days is January (17.2 days).
The months with the least sunshine days are June and August (0.3 days).

Average UV index in May
Ukwatta, Sri Lanka

Average UV index in May: 6

The months with the highest UV index are January, February, March, April, July, September, November and December (UV index 7).
The months with the lowest UV index are May, June, August and October (UV index 6).

Average cloud cover in May
Ukwatta, Sri Lanka

Average cloud cover in May: 54

The month with the most cloud cover is June (Cloud cover 57).
The month with the least cloud cover is January (Cloud cover 24).

Average visibility in May
Ukwatta, Sri Lanka

Average visibility in May: 9km

The months with the highest visibility are January, February, March, April and December (10km).
The months with the lowest visibility are May, June, July, August, September, October and November (9km).