April Weather in Kurunegala Sri Lanka

Daily high temperatures are around 92°F, rarely falling below 87°F or exceeding 97°F.

Daily low temperatures are around 75°F, rarely falling below 72°F or exceeding 78°F.

For reference, on March 27, the hottest day of the year, temperatures in Kurunegala typically range from 74°F to 93°F, while on January 28, the coldest day of the year, they range from 69°F to 87°F.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on April. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Nandaime, Nicaragua (10,824 miles away); Maturín, Venezuela (9,671 miles); and Pacatuba, Ceará, Brazil (8,247 miles) are the far-away foreign places with temperatures most similar to Kurunegala (view comparison).

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The month of April in Kurunegala experiences rapidly increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 64% to 78%.

The clearest day of the month is April 1, with clear, mostly clear, or partly cloudy conditions 36% of the time.

For reference, on July 22, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 89%, while on March 6, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 45%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Kurunegala, the chance of a wet day over the course of April is rapidly increasing, starting the month at 38% and ending it at 46%.

For reference, the year's highest daily chance of a wet day is 67% on October 27, and its lowest chance is 19% on February 3.

Rainfall

To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during April in Kurunegala is rapidly increasing, starting the month at 3.2 inches, when it rarely exceeds 6.1 inches or falls below 0.7 inches, and ending the month at 4.4 inches, when it rarely exceeds 8.3 inches or falls below 1.3 inches.

The highest average 31-day accumulation is 4.4 inches on April 26.

Over the course of April in Kurunegala, the length of the day is essentially constant. The shortest day of the month is April 1, with 12 hours, 11 minutes of daylight and the longest day is April 30, with 12 hours, 23 minutes of daylight.

The latest sunrise of the month in Kurunegala is 6:06 AM on April 1 and the earliest sunrise is 12 minutes earlier at 5:54 AM on April 30.

The latest sunset is 6:18 PM on April 1 and the earliest sunset is 1 minute, 9 seconds earlier at 6:17 PM on April 23.

Daylight saving time is not observed in Kurunegala during 2026.

For reference, on June 21, the longest day of the year, the Sun rises at 5:53 AM and sets 12 hours, 34 minutes later, at 6:27 PM, while on December 21, the shortest day of the year, it rises at 6:15 AM and sets 11 hours, 41 minutes later, at 5:57 PM.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

The figure below presents a compact representation of key lunar data for April 2026. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The chance that a given day will be muggy in Kurunegala is gradually increasing during April, rising from 97% to 100% over the course of the month.

For reference, on May 29, the muggiest day of the year, there are muggy conditions 100% of the time, while on February 3, the least muggy day of the year, there are muggy conditions 85% of the time.

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Kurunegala is rapidly increasing during April, increasing from 4.8 miles per hour to 7.5 miles per hour over the course of the month.

For reference, on June 17, the windiest day of the year, the daily average wind speed is 14.5 miles per hour, while on April 3, the calmest day of the year, the daily average wind speed is 4.8 miles per hour.

The lowest daily average wind speed during April is 4.8 miles per hour on April 3.

The hourly average wind direction in Kurunegala throughout April is predominantly from the west, with a peak proportion of 62% on April 30.

Kurunegala is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average surface water temperature in Kurunegala is essentially constant during April, remaining around 85°F throughout.

The highest average surface water temperature during April is 85°F on April 17.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

Temperatures in Kurunegala are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

The average accumulated growing degree days in Kurunegala are very rapidly increasing during April, increasing by 913°F, from 2,592°F to 3,505°F, over the course of the month.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy in Kurunegala is decreasing during April, falling by 1.1 kWh, from 6.0 kWh to 4.9 kWh, over the course of the month.

For the purposes of this report, the geographical coordinates of Kurunegala are 7.486 deg latitude, 80.362 deg longitude, and 400 ft elevation.

The topography within 2 miles of Kurunegala contains significant variations in elevation, with a maximum elevation change of 702 feet and an average elevation above sea level of 441 feet. Within 10 miles contains significant variations in elevation (2,448 feet). Within 50 miles contains large variations in elevation (8,284 feet).

The area within 2 miles of Kurunegala is covered by cropland (48%), trees (28%), and shrubs (21%), within 10 miles by cropland (47%) and trees (42%), and within 50 miles by trees (40%) and cropland (38%).