May weather forecastBowala, Sri Lanka
May
Weather in May
The last month of the spring, May, is another hot month in Bowala, Sri Lanka, with an average temperature fluctuating between 21.8°C (71.2°F) and 30.1°C (86.2°F).Temperature
The commencement of May records an average high-temperature of a still hot 30.1°C (86.2°F), barely varying from April's 31.2°C (88.2°F). During May, Bowala experiences an average low-temperature of 21.8°C (71.2°F) at night.Heat index
The heat index in May is appraised at a sweltering 38°C (100.4°F). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.Heat index's context suggests values are appropriate for shady areas and slight breezes. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.
Humidity
The average relative humidity in May is 80%.Rainfall
In May, the rain falls for 28.6 days. Throughout May, 163mm (6.42") of precipitation is accumulated. In Bowala, Sri Lanka, during the entire year, the rain falls for 278.9 days and collects up to 1477mm (58.15") of precipitation.Daylight
In Bowala, the average length of the day in May is 12h and 27min.On the first day of the month, sunrise is at 05:53 and sunset at 18:16. On the last day of May, sunrise is at 05:49 and sunset at 18:20 +0530.
Sunshine
In May, the average sunshine is 10.4h.UV index
January through September, November and December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.Note: A maximum daily UV index of 6 during May morphs into the following directions:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Bowala, Sri Lanka
- Average high temperature in May: 30.1°C
The warmest month (with the highest average high temperature) is March (31.5°C).
The month with the lowest average high temperature is December (27.5°C).
- Average low temperature in May: 21.8°C
The months with the highest average low temperature are May and June (21.8°C).
The coldest month (with the lowest average low temperature) is February (18.1°C).
Average pressure in May
Bowala, Sri Lanka
- Average pressure in May: 1008.2mbar
The month with the highest atmospheric pressure is January (1011.8mbar).
The month with the lowest atmospheric pressure is June (1008.1mbar).
Average wind speed in May
Bowala, Sri Lanka
- Average wind speed in May: 9.3km/h
The windiest month (with the highest average wind speed) is June (13.5km/h).
The calmest month (with the lowest average wind speed) is April (4.7km/h).
Average humidity in May
Bowala, Sri Lanka
- Average humidity in May: 80%
The month with the highest relative humidity is December (84%).
The month with the lowest relative humidity is March (74%).
Average rainfall in May
Bowala, Sri Lanka
- Average rainfall in May: 163mm
The wettest month (with the highest rainfall) is October (301mm).
The driest month (with the least rainfall) is January (38mm).
Average rainfall days in May
Bowala, Sri Lanka
- Average rainfall days in May: 28.6 days
The month with the highest number of rainy days is May (28.6 days).
The month with the least rainy days is January (14.1 days).
Average daylight in May /
Average sunshine in May
Bowala, Sri Lanka
- Average daylight in May: 12h and 30min
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: 10h and 24min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in May
Bowala, Sri Lanka
- Average sunshine days in May: 1.2 days
The month with the most sunshine days is January (14.8 days).
The month with the least sunshine days is May (1.2 days).
Average UV index in May
Bowala, Sri Lanka
- Average UV index in May: 6
The months with the highest UV index are January, February, March, April, May, June, July, August, September, November and December (UV index 6).
The month with the lowest UV index is October (UV index 5).
Average cloud cover in May
Bowala, Sri Lanka
- Average cloud cover in May: 35
The months with the most cloud cover are November and December (Cloud cover 47).
The month with the least cloud cover is March (Cloud cover 27).
Average visibility in May
Bowala, Sri Lanka
- Average visibility in May: 9km
The months with the highest visibility are June, July and August (10km).
The months with the lowest visibility are January, February, March, April, November and December (8km).





