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
As April transitions into May, Weeraketiya records an average high-temperature of a still tropical 30.3°C (86.5°F), showing a gentle shift from the preceding month. A consistent nighttime average temperature of 26.3°C (79.3°F) is maintained during May.Heat index
The heat index in May is estimated at a fiery hot 39°C (102.2°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.One should be cognizant that the heat index values are tailored for shaded spots and mild winds. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. 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.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.
Humidity
The months with the highest humidity are May, September and November, with an average relative humidity of 81%.Rainfall
In Weeraketiya, in May, during 15.6 rainfall days, 54mm (2.13") of precipitation is typically accumulated. Throughout the year, there are 180 rainfall days, and 509mm (20.04") of precipitation is accumulated.Daylight
In May, the average length of the day is 12h and 24min.On the first day of the month, sunrise is at 05:53 and sunset at 18:14. On the last day of May, in Weeraketiya, sunrise is at 05:51 and sunset at 18:18 +0530.
Sunshine
The average sunshine in May is 9.3h.UV index
The months with the highest UV index are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum daily UV index of 7 during May morphs into the following directions:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is May?
What are the most humid months?
What is the average humidity in May?
How many days 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?
What are the months with the highest UV index?
What is the month with the lowest UV index in Weeraketiya?
How high is the UV index in May?
Average temperature in May
Weeraketiya, Sri Lanka
- Average high temperature in May: 30.3°C
The warmest months (with the highest average high temperature) are March and April (31.1°C).
The month with the lowest average high temperature is September (29.1°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°C).
Average pressure in May
Weeraketiya, Sri Lanka
- Average pressure in May: 1008.9mbar
The month with the highest atmospheric pressure is January (1011.4mbar).
The month with the lowest atmospheric pressure is May (1008.9mbar).
Average wind speed in May
Weeraketiya, Sri Lanka
- Average wind speed in May: 15.4km/h
The windiest month (with the highest average wind speed) is July (18.9km/h).
The calmest month (with the lowest average wind speed) is January (9km/h).
Average humidity in May
Weeraketiya, Sri Lanka
- Average humidity in May: 81%
The months with the highest relative humidity are May, September and November (81%).
The months with the lowest relative humidity are January and February (77%).
Average rainfall in May
Weeraketiya, Sri Lanka
- Average rainfall in May: 54mm
The wettest month (with the highest rainfall) is November (66mm).
The driest month (with the least rainfall) is January (22mm).
Average rainfall days in May
Weeraketiya, Sri Lanka
- Average rainfall days in May: 15.6 days
The month with the highest number of rainy days is November (19.8 days).
The month with the least rainy days is June (10.7 days).
Average daylight in May /
Average sunshine in May
Weeraketiya, Sri Lanka
- Average daylight in May: 12h and 2min
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 48min).
- Average sunshine in May: 9h and 2min
The month with the most sunshine is April (Average sunshine: 9h and 42min).
The month with the least sunshine is December (Average sunshine: 6h and 54min).
Average sunshine days in May
Weeraketiya, Sri Lanka
- Average sunshine days in May: 13.5 days
The month with the most sunshine days is July (17.8 days).
The month with the least sunshine days is November (7.8 days).
Average UV index in May
Weeraketiya, Sri Lanka
- Average UV index in May: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Average cloud cover in May
Weeraketiya, Sri Lanka
- Average cloud cover in May: 49
The month with the most cloud cover is June (Cloud cover 53).
The month with the least cloud cover is February (Cloud cover 26).
Average visibility in May
Weeraketiya, Sri Lanka
- Average visibility in May: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
