Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
April
Weather in April
Temperature
The average high-temperature during April is a still tropical 31.2°C (88.2°F), almost matching the conditions of the preceding month. In April, the recorded average low-temperature is a pleasant 20.8°C (69.4°F).Heat index
For most parts of April, the heat index is computed to be a blistering 41°C (105.8°F). Implement additional preventive actions, heat cramps and heat exhaustion are potential hazards. Heatstroke could follow prolonged activity.Bear in mind that the heat index values are determined for shaded areas and light breezes. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', measures the perceived warmth when incorporating the humidity present in the air. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.
Humidity
In Ambadeniya, the average relative humidity in April is 79%.Rainfall
In Ambadeniya, during April, the rain falls for 27 days and regularly aggregates up to 152mm (5.98") of precipitation. Throughout the year, there are 278.4 rainfall days, and 1466mm (57.72") of precipitation is accumulated.Daylight
In Ambadeniya, the average length of the day in April is 12h and 17min.On the first day of the month, sunrise is at 06:06 and sunset at 18:17. On the last day of April, in Ambadeniya, sunrise is at 05:54 and sunset at 18:16 +0530.
Sunshine
In April, the average sunshine is 9.4h.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 estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: During April, 6 as the daily maximum UV index converts into the following advice:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in April?
What is the average humidity in April?
How many days does it rain in April?
How many hours of daylight does Ambadeniya have in April?
When is the sunrise / sunset in April?
How many hours of sunshine does Ambadeniya have in April?
When is the highest UV index?
What is the UV index reading in April?
Average temperature in April
Ambadeniya, Sri Lanka
- Average high temperature in April: 31.2°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 April: 20.8°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 April
Ambadeniya, Sri Lanka
- Average pressure in April: 1009.6mbar
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 April
Ambadeniya, Sri Lanka
- Average wind speed in April: 4.7km/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 April
Ambadeniya, Sri Lanka
- Average humidity in April: 79%
The month with the highest relative humidity is December (84%).
The month with the lowest relative humidity is March (74%).
Average rainfall in April
Ambadeniya, Sri Lanka
- Average rainfall in April: 152mm
The wettest month (with the highest rainfall) is October (301mm).
The driest month (with the least rainfall) is January (38mm).
Average rainfall days in April
Ambadeniya, Sri Lanka
- Average rainfall days in April: 27 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 April /
Average sunshine in April
Ambadeniya, Sri Lanka
- Average daylight in April: 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 April: 9h and 2min
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 April
Ambadeniya, Sri Lanka
- Average sunshine days in April: 1.8 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 April
Ambadeniya, Sri Lanka
- Average UV index in April: 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 April
Ambadeniya, Sri Lanka
- Average cloud cover in April: 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 April
Ambadeniya, Sri Lanka
- Average visibility in April: 8km
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).
