Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
May
Weather in May
Temperature
The shift from April to May is characterized by an average high-temperature of a still tropical 30.8°C (87.4°F), not significantly different from the 32°C (89.6°F) of April. May notes an average low temperature of 26.4°C (79.5°F), subtly down from the daytime highs.Heat index
The heat index in May is calculated to be an extremely hot 40°C (104°F). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. 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 'real feel' or 'apparent temperature', arises from combining readings of air temperature and relative moisture content. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.
Humidity
In May, the average relative humidity is 80%.Rainfall
In Ihala Kottaramulla, in May, during 26.3 rainfall days, 204mm (8.03") of precipitation is typically accumulated. In Ihala Kottaramulla, Sri Lanka, during the entire year, the rain falls for 265.4 days and collects up to 1744mm (68.66") of precipitation.Daylight
In Ihala Kottaramulla, Sri Lanka, the average length of the day in May is 12h and 28min.On the first day of May, sunrise is at 05:55 and sunset at 18:19. On the last day of the month, sunrise is at 05:52 and sunset at 18:23 +0530.
Sunshine
The average sunshine in May is 8.8h.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 unsafe exposure to UV radiation for ordinary individuals.Note: A maximum high UV index of 6 in May translates into the following recommendations:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during May?
What is the average humidity in May in Ihala Kottaramulla?
How much does it rain in May?
What is the average length of the day in May?
When are sunrise and sunset in May?
How long on average sun shines in May?
When is the lowest UV index?
What is the UV index reading in May?
Average temperature in May
Ihala Kottaramulla, Sri Lanka
- Average high temperature in May: 30.8°C
The warmest month (with the highest average high temperature) is March (32.1°C).
The month with the lowest average high temperature is July (29.2°C).
- Average low temperature in May: 26.4°C
The month with the highest average low temperature is May (26.4°C).
The coldest month (with the lowest average low temperature) is January (22.8°C).
Average pressure in May
Ihala Kottaramulla, Sri Lanka
- Average pressure in May: 1008.4mbar
The month with the highest atmospheric pressure is January (1011.7mbar).
The months with the lowest atmospheric pressure are May and June (1008.4mbar).
Average wind speed in May
Ihala Kottaramulla, Sri Lanka
- Average wind speed in May: 15.5km/h
The windiest month (with the highest average wind speed) is June (18.3km/h).
The calmest month (with the lowest average wind speed) is March (9.1km/h).
Average humidity in May
Ihala Kottaramulla, Sri Lanka
- Average humidity in May: 80%
The months with the highest relative humidity are June, July and August (82%).
The months with the lowest relative humidity are January and February (73%).
Average rainfall in May
Ihala Kottaramulla, Sri Lanka
- Average rainfall in May: 204mm
The wettest month (with the highest rainfall) is June (231mm).
The driest month (with the least rainfall) is January (29mm).
Average rainfall days in May
Ihala Kottaramulla, Sri Lanka
- Average rainfall days in May: 26.3 days
The month with the highest number of rainy days is August (28.4 days).
The month with the least rainy days is January (9.7 days).
Average daylight in May /
Average sunshine in May
Ihala Kottaramulla, Sri Lanka
- Average daylight in May: 12h and 3min
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 5min
The months with the most sunshine are January, February, March and April (Average sunshine: 9h and 12min).
The month with the least sunshine is November (Average sunshine: 6h and 36min).
Average sunshine days in May
Ihala Kottaramulla, Sri Lanka
- Average sunshine days in May: 3.6 days
The month with the most sunshine days is January (20 days).
The month with the least sunshine days is August (1.2 days).
Average UV index in May
Ihala Kottaramulla, 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
Ihala Kottaramulla, Sri Lanka
- Average cloud cover in May: 52
The month with the most cloud cover is June (Cloud cover 57).
The month with the least cloud cover is January (Cloud cover 21).
Average visibility in May
Ihala Kottaramulla, Sri Lanka
- Average visibility in May: 9km
The months with the highest visibility are January, February, March, April, June, July, September and December (10km).
The months with the lowest visibility are May, August, October and November (9km).
