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
Weather in April
Temperature
March and April, with an average high-temperature of 31.8°C (89.2°F), are the warmest months.Heat index
The heat index in April is estimated at an extremely hot 42°C (107.6°F). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.Keep in mind the heat index values are meant for areas in shade and with light wind. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', gauges the sensation of temperature factoring in the air's moisture content. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.
Humidity
In Kolonnawa, the average relative humidity in April is 77%.Rainfall
In April, in Kolonnawa, the rain falls for 25.4 days. Throughout April, 137mm (5.39") of precipitation is accumulated. In Kolonnawa, Sri Lanka, during the entire year, the rain falls for 289.4 days and collects up to 2262mm (89.06") of precipitation.Daylight
In April, the average length of the day in Kolonnawa is 12h and 17min.On the first day of the month, sunrise is at 06:08 and sunset at 18:19. On the last day of April, sunrise is at 05:56 and sunset at 18:18 +0530.
Sunshine
In Kolonnawa, the average sunshine in April is 8.9h.UV index
January through April, July, September, November and December, with an average maximum UV index of 7, are months with the highest UV index in Kolonnawa. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for average individuals.Note: The UV index of 7 during April translates into the following guidance:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Frequently asked questions
What is the warmest month in Kolonnawa?
How hot does it get in Kolonnawa in April?
What is the average humidity in April in Kolonnawa?
How much does it rain in Kolonnawa in April?
What is the average length of the day in April in Kolonnawa?
When is the sunrise / sunset in April in Kolonnawa?
How many hours of sunshine does Kolonnawa have in April?
What are the months with the highest UV index in Kolonnawa?
How high is the UV index in April in Kolonnawa?
Average temperature in April
Kolonnawa, Sri Lanka
- Average high temperature in April: 31.8°C
The warmest months (with the highest average high temperature) are March and April (31.8°C).
The months with the lowest average high temperature are July and August (28.9°C).
- Average low temperature in April: 25.8°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 (23.1°C).
Average pressure in April
Kolonnawa, Sri Lanka
- Average pressure in April: 1009.7mbar
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 April
Kolonnawa, Sri Lanka
- Average wind speed in April: 8.6km/h
The windiest month (with the highest average wind speed) is June (15.1km/h).
The calmest month (with the lowest average wind speed) is March (8km/h).
Average humidity in April
Kolonnawa, Sri Lanka
- Average humidity in April: 77%
The months with the highest relative humidity are June, July and August (83%).
The months with the lowest relative humidity are January and February (74%).
Average rainfall in April
Kolonnawa, Sri Lanka
- Average rainfall in April: 137mm
The wettest month (with the highest rainfall) is June (341mm).
The driest month (with the least rainfall) is January (40mm).
Average rainfall days in April
Kolonnawa, Sri Lanka
- Average rainfall days in April: 25.4 days
The month with the highest number of rainy days is August (30.2 days).
The month with the least rainy days is January (11.6 days).
Average daylight in April /
Average sunshine in April
Kolonnawa, 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: 8h and 5min
The month with the most sunshine is January (Average sunshine: 9h and 6min).
The month with the least sunshine is November (Average sunshine: 6h and 42min).
Average sunshine days in April
Kolonnawa, Sri Lanka
- Average sunshine days in April: 2.6 days
The month with the most sunshine days is January (17.2 days).
The months with the least sunshine days are June and August (0.3 days).
Average UV index in April
Kolonnawa, Sri Lanka
- Average UV index in April: 7
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 April
Kolonnawa, Sri Lanka
- Average cloud cover in April: 40
The month with the most cloud cover is June (Cloud cover 57).
The month with the least cloud cover is January (Cloud cover 24).
Average visibility in April
Kolonnawa, Sri Lanka
- Average visibility in April: 10km
The months with the highest visibility are January, February, March, April and December (10km).
The months with the lowest visibility are May, June, July, August, September, October and November (9km).
Kolonnawa, Sri Lanka
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