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
Weather in May
Temperature
May's presence in Ratnapura marks an average high-temperature of a warm 28.3°C (82.9°F), subtly varied from April's 30°C (86°F). During May, the nighttime temperature averages of 21.8°C (71.2°F).Heat index
Throughout May, the heat index is evaluated at a tropical 34°C (93.2°F). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.Consider that heat index readings are for situations in the shade and light wind. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is the outcome of merging air's temperature and its humidity metrics. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
Humidity
May and June, with an average relative humidity of 88%, are the most humid months.Rainfall
In Ratnapura, during May, the rain falls for 29.8 days and regularly aggregates up to 270mm (10.63") of precipitation. Throughout the year, there are 317.3 rainfall days, and 2422mm (95.35") of precipitation is accumulated.Daylight
In Ratnapura, the average length of the day in May is 12h and 26min.On the first day of May in Ratnapura, sunrise is at 05:54 and sunset at 18:16. On the last day of the month, sunrise is at 05:51 and sunset at 18:20 +0530.
Sunshine
In Ratnapura, the average sunshine in May is 7.6h.UV index
January through August, November and December, with an average maximum UV index of 6, are months with the highest UV index in Ratnapura. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: An average UV index of 6 in May transforms into this advice:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Frequently asked questions
How hot is it in Ratnapura in May?
What is the most humid month in Ratnapura?
What is the average humidity in May in Ratnapura?
How many days does it rain in May in Ratnapura?
How many hours of daylight does Ratnapura have in May?
What time are sunrise and sunset in May in Ratnapura?
How long on average sun shines in May in Ratnapura?
What are the months with the highest UV index in Ratnapura?
What is the UV index intensity in May in Ratnapura?
Average temperature in May
Ratnapura, Sri Lanka
- Average high temperature in May: 28.3°C
The warmest month (with the highest average high temperature) is March (31.1°C).
The months with the lowest average high temperature are June and July (27.3°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 (18.7°C).
Average pressure in May
Ratnapura, 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
Ratnapura, Sri Lanka
- Average wind speed in May: 6.5km/h
The windiest month (with the highest average wind speed) is July (8.8km/h).
The calmest months (with the lowest average wind speed) are February and March (3.9km/h).
Average humidity in May
Ratnapura, Sri Lanka
- Average humidity in May: 88%
The months with the highest relative humidity are May and June (88%).
The months with the lowest relative humidity are January and February (80%).
Average rainfall in May
Ratnapura, Sri Lanka
- Average rainfall in May: 270mm
The wettest month (with the highest rainfall) is October (357mm).
The driest month (with the least rainfall) is January (85mm).
Average rainfall days in May
Ratnapura, Sri Lanka
- Average rainfall days in May: 29.8 days
The month with the highest number of rainy days is May (29.8 days).
The month with the least rainy days is January (18.9 days).
Average daylight in May /
Average sunshine in May
Ratnapura, 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 42min).
- Average sunshine in May: 7h and 4min
The month with the most sunshine is April (Average sunshine: 8h and 24min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in May
Ratnapura, Sri Lanka
- Average sunshine days in May: 0.8 days
The month with the most sunshine days is January (9.2 days).
The month with the least sunshine days is April (0.2 days).
Average UV index in May
Ratnapura, Sri Lanka
- Average UV index in May: 6
The months with the highest UV index are January, February, March, April, May, June, July, August, November and December (UV index 6).
The months with the lowest UV index are September and October (UV index 5).
Average cloud cover in May
Ratnapura, Sri Lanka
- Average cloud cover in May: 61
The month with the most cloud cover is June (Cloud cover 65).
The month with the least cloud cover is January (Cloud cover 33).
Average visibility in May
Ratnapura, Sri Lanka
- Average visibility in May: 7km
The months with the highest visibility are January, February, March, June, July, August and December (8km).
The months with the lowest visibility are April, May, September, October and November (7km).
Ratnapura, Sri Lanka
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