April Weather in Jaffna, Sri Lanka

Last updated: March 19, 2025

April in Jaffna, Sri Lanka, showcases a warm tropical climate, with temperatures reaching a maximum of 32°C (89°F) and an average of 29°C (85°F). Visitors can expect pleasant evenings, as the minimum temperature hovers around 25°C (78°F). This month brings moderate precipitation, totaling 29 mm (1.2 in) over six rainy days, contributing to a relative humidity of 69%. Despite occasional showers, April’s weather is characterized by vibrant sunshine and warm breezes, perfect for experiencing the unique culture and landscapes of Jaffna.

April Temperature in Jaffna

In April, Jaffna, Sri Lanka, experiences a noticeable rise in temperatures, reflecting the region's transition into the warmer months. With minimums settling around 25°C (78°F) and maximums peaking at 32°C (89°F), the average temperature climbs to a comfortable 29°C (85°F), making it one of the warmest periods of the year. This upward trend from the cooler days of March, where temperatures hovered between 25°C and 31°C, signifies a shift towards the hotter conditions typical of the approaching summer. As the days grow warmer, visitors can expect vibrant sunshine, which enhances the allure of Jaffna's stunning landscapes and rich cultural experiences.

April Weather in Jaffna: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Jaffna, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec798082858585848383828180
Data source: Temperature data for Jaffna generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

April Precipitation in Jaffna

In April, Jaffna begins to experience a notable uptick in precipitation, with an average of 29 mm (1.2 in) of rainfall over 6 days. This marks a slight increase from the preceding months, hinting at the onset of the region's more humid period. While January stands out with the highest average of 96 mm (3.8 in), April's relatively lower rainfall suggests a transitional phase as the lushness of the landscape prepares for the heavier rains that follow in May and beyond. As the year progresses, the precipitation trend intensifies significantly, culminating in the peak months of November and December, where totals soar, underscoring a distinct seasonal rhythm in Jaffna's climate.

April Precipitation Trends in Jaffna

The chart displays monthly precipitation patterns in Jaffna, with values for each month alongside April's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec9617183056326265100220396254
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Jaffna

In April, Jaffna experiences a humidity level of 69%, maintaining the same comfortable conditions seen in the preceding months of February and March. This consistent figure is part of a clearer trend as the region transitions toward the wetter months ahead. Following April, humidity levels are set to rise significantly, peaking in the late summer months with August reaching 87%. Interestingly, while January starts the year with a high 76% humidity, April's steady levels suggest a brief period of relative dryness before the onset of the monsoon season, highlighting the dynamic climate patterns that shape Jaffna throughout the year.

April Average Humidity in Jaffna

This chart illustrates the average monthly humidity levels in Jaffna, with April's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how April's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec76%69%69%69%76%82%83%87%86%86%86%85%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Jaffna

In April, Jaffna, Sri Lanka, experiences its peak UV Index of 15, categorized as extreme, making it crucial for sun safety. This month continues the trend of elevated UV levels since January, where the UV Index started at 11 and has gradually increased, reaching its highest point in April. With a consistent burn time of just 10 minutes across these months, the importance of protective measures cannot be overstated. As summer approaches, the risk of skin damage remains significant, echoing the necessity for awareness and caution. For details on daily UV forecasts, visit Jaffna UV Index.

Maximum UV Index Levels in Jaffna for April

The chart shows the monthly maximum UV Index (UVI) for Jaffna in April, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec111314151312131314121110
Data source: Jaffna April UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

April Sunshine in Jaffna

April in Jaffna, Sri Lanka, bathes the region in a radiant glow, with 344 hours of sunshine, just shy of the peak found in March. This month typically signals the transition into the warmer season, where the abundant sunlight mirrors the rising temperatures. Following April, the region continues to enjoy consistently high sunshine hours, with May and July both offering 346 hours, showcasing a beautiful stretch of sunny days. While the latter months see a gradual decrease, May through July maintain a delightful brightness, making Jaffna's April an alluring time for sun-seekers and nature lovers alike. Overall, the trend reflects a tapestry of sunshine that characterizes Jaffna's unique charm throughout the year, with April standing out as a delightful highlight.

Monthly Sunshine Duration in Jaffna: April Highlighted

The April sunshine duration represents the total number of hours Jaffna experiences direct sunlight during the month of April, excluding cloudy or obstructed periods. This chart compares the sunshine duration of April with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec265h312h346h344h346h336h343h333h323h314h267h303h
Data source: Jaffna April Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Jaffna During April

In April, Jaffna, Sri Lanka begins to embrace the warmth of spring with an impressive 61% chance of sunny weather. This marks a notable increase from the previous months, particularly after the gradual rise seen from 27% in January to 60% in March. As April unfolds, residents and visitors alike can expect ample sunshine, making it one of the better months to enjoy outdoor activities. However, this sunny spell contrasts sharply with the onset of the monsoon season in May, where the likelihood of sun plummets to a mere 26%. Overall, April stands out as a delightful transitional month, inviting the community to bask in the sun before the rains arrive.

Percentage of Sunny Days in April in Jaffna

The chart illustrates the percentage of sunny days in Jaffna throughout the year, with April highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Jaffna experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec27%56%60%61%26%21%24%11%22%21%12%51%
Data source: Jaffna April chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Jaffna in April

In April, Jaffna, Sri Lanka enjoys a steady 12 hours of daylight, continuing the trend established in March. This moderate daylight duration marks a shift from the shorter days of January and February, which both featured 11 hours. As the year progresses, daylight duration stabilizes at 12 hours from March through August, offering a consistent rhythm that enhances the region's vibrant lifestyle. This trend of longer days is particularly welcome as it sets the stage for an array of outdoor activities and cultural events that thrive in the warmth of the Sri Lankan sun. As the days gradually shorten again in October and November, the balance emphasizes the region's unique climatic patterns throughout the year.

Average Daylight Hours in Jaffna for April

The chart illustrates the variation in daylight duration in Jaffna throughout the year, with April highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec11h 36m11h 48m12h 3m12h 19m12h 33m12h 39m12h 36m12h 24m12h 9m11h 53m11h 40m11h 33m
Data source: Jaffna daylight hours, calculated by summing the hours between sunrise and sunset for each day.

April Winds in Jaffna

In April, the wind in Jaffna, Sri Lanka, offers a gentle yet refreshing embrace, with an average speed of 4.9 m/s (11 mph). This month marks a slight uptick from March's softer breezes, suggesting the transition into the more turbulent winds of May, which escalate to 6.5 m/s (15 mph). Notably, April's winds are among the lighter gusts of the year, contributing to the region's serene atmosphere as it bids farewell to the cooler months. The trend continues into the summer, with wind speeds gradually increasing, reaching their peak in June and July, before tapering off towards December. This cyclical pattern beautifully reflects the changing seasons and invites locals and visitors alike to enjoy the gentle whispers of April’s winds.

Average April Wind Speed in Jaffna

The chart displays monthly wind speed patterns in Jaffna, with values for each month shown alongside April's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how April's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec5.65.54.64.9 m/s6.57.36.86.66.45.35.15.4
Data source: Jaffna April wind data, generated using information from the Copernicus Climate Change Service.

How April Weather in Jaffna Compares to Other Months

The weather in Jaffna changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of April's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Jaffna and find detailed weather information for every month.

In January, the weather in Jaffna is generally cooler, with temperatures ranging from a minimum of 24°C (75°F) to a maximum of 29°C (84°F), and an average temperature of 26°C (79°F). This month also experiences higher humidity at 76% and more frequent rainfall, averaging 96 mm (3.8 in) over 8 days. In contrast, April brings warmer temperatures, with a minimum of 25°C (78°F) and a maximum of 32°C (89°F), resulting in a more humid atmosphere at 69%. Precipitation in April is significantly less at 29 mm (1.2 in) over just 6 days. For more details on January's weather, you can visit Jaffna weather in January.

In comparing the weather of April and February, April tends to be warmer, with temperatures ranging from a minimum of 25°C (78°F) to a maximum of 32°C (89°F). In contrast, February's temperatures are slightly cooler, with a minimum of 23°C (74°F) and a maximum of 30°C (86°F). Additionally, April experiences more precipitation, with 29 mm (1.2 in) over six days, while February sees less rain, totaling 17 mm (0.7 in) over four days. Both months have similar humidity levels at 69%, but April's higher average temperature and increased rainfall mark a shift towards warmer, wetter conditions. For more detailed information on February weather patterns, visit Jaffna weather in February.

In comparing the weather of April to that of March, we see a slight increase in temperature across all ranges; April's average temperature is 29°C (85°F) compared to March's average of 28°C (82°F). Notably, while both months have a minimum temperature of around 25°C (77-78°F), April also sees a slightly higher maximum temperature of 32°C (89°F) versus March's 31°C (87°F). Additionally, April experiences more precipitation, with a total of 29 mm (1.2 in) over 6 days, compared to March's 18 mm (0.7 in) over 5 days, yet both months share the same humidity level of 69%. For more details on March weather specifically, you can visit Jaffna weather in March.

In comparing the weather between April and May, both months showcase similar average temperatures at 29°C (85°F), but May tends to be slightly warmer with a minimum temperature of 27°C (80°F) compared to April's 25°C (78°F). Additionally, May experiences significantly more rainfall, with 56 mm (2.2 in) of precipitation over 13 days, in contrast to April's 29 mm (1.2 in) over just 6 days. This increase in rainfall also contributes to higher humidity levels in May at 76%, compared to April's 69%. For more detailed information, you can check Jaffna weather in May.

In comparing the weather of April and June, we find that both months enjoy warm average temperatures, with April featuring a minimum of 25°C (78°F) and a maximum of 32°C (89°F), while June starts off slightly warmer with a minimum of 26°C (80°F) and a maximum of 31°C (88°F). Precipitation increases from 29 mm (1.2 in) over 6 days in April to 32 mm (1.3 in) over 7 days in June, indicating a slight uptick in rainfall. Additionally, humidity levels are higher in June at 82%, compared to April's 69%. For more detailed information, you can check out Jaffna weather in June.

In comparing the weather of April and July, we see that both months maintain warm temperatures, with April experiencing a minimum of 25°C (78°F) and a maximum of 32°C (89°F), while July sees a slightly warmer minimum of 26°C (79°F) and a maximum of 31°C (89°F). Interestingly, the average temperature remains fairly consistent across both months, at 29°C (85°F) in April and 29°C (84°F) in July. However, July tends to be wetter, with 62 mm (2.4 in) of precipitation over 13 days, compared to April's 29 mm (1.2 in) over 6 days. Additionally, the humidity rises in July, reaching 83% compared to April's 69%. For a more detailed insight into the conditions during this month, you can visit Jaffna weather in July.

April and August present contrasting weather patterns, with April typically offering slightly warmer temperatures. In April, the minimum temperature hovers around 25°C (78°F), with an average of 29°C (85°F) and a maximum of 32°C (89°F). In comparison, August sees a minimum temperature of 26°C (79°F), an average of 28°C (84°F), and a maximum of 31°C (88°F). While April experiences less precipitation at 29 mm (1.2 in) over 6 days, August is much wetter, with 65 mm (2.5 in) falling over 13 days. Additionally, humidity levels rise significantly in August to 87%, compared to April's 69%. For more details, visit Jaffna weather in August.

In comparing the weather between April and September, we observe some notable differences and similarities. April boasts a minimum temperature of 25°C (78°F) and an average maximum of 32°C (89°F), providing warm and sunny days with relatively low precipitation of 29 mm (1.2 in) spread over just 6 days. In contrast, September features slightly warmer temperatures, with a minimum of 25°C (78°F) and an average maximum of 31°C (88°F), but it brings significantly more rainfall, totaling 100 mm (3.9 in) over 17 days, leading to a higher humidity level of 86%. This shift from April’s drier heat to September’s humid, wetter climate may influence outdoor activities and daily routines, making this comparison essential for understanding the seasonal transition. For more detailed insights, you can check the weather specifics here: Jaffna weather in September.

In April, the weather in Jaffna features warm temperatures, with a minimum of 25°C (78°F) and an average of 29°C (85°F), peaking at 32°C (89°F). The month sees relatively low precipitation, totaling 29 mm (1.2 in) over about 6 days, and a humidity level of 69%. In contrast, October brings a slight drop in average temperatures, with a minimum of 25°C (77°F) and a maximum of 30°C (86°F). However, this month is characterized by significantly higher rainfall, accumulating 220 mm (8.7 in) across 23 days, along with increased humidity at 86%. For a detailed look at the climate, you can check Jaffna weather in October.

April and November in Jaffna present contrasting weather patterns. In April, temperatures are generally warmer, with an average of 29°C (85°F) and a maximum of 32°C (89°F), complemented by relatively low precipitation of 29 mm (1.2 in) over just 6 days. In contrast, November sees much cooler temperatures, with an average of 27°C (81°F) and a maximum of 29°C (85°F), but it experiences significantly higher precipitation at 396 mm (15.6 in) spread across 24 days. Additionally, humidity levels rise in November to 86%, compared to 69% in April. For more details on November's weather conditions, you can visit Jaffna weather in November.

April and December exhibit distinct differences in weather patterns. In April, temperatures are generally warmer with a minimum of 25°C (78°F) and an average of 29°C (85°F), while December sees slightly cooler temperatures, ranging from a minimum of 24°C (76°F) to an average of 26°C (80°F). April experiences relatively low precipitation at 29 mm (1.2 in) over 6 days, whereas December is much wetter, with 254 mm (10.0 in) of rainfall over 18 days. Additionally, the humidity is higher in December at 85%, compared to April's 69%. For a more detailed understanding of December weather patterns, you can visit Jaffna weather in December.

Compare Jaffna's Climate with Cities Worldwide

Conclusion: What to Expect From April Weather in Jaffna

In April, Jaffna experiences a noticeable shift in weather, characterized by warmer temperatures and increased humidity compared to the preceding months. With highs reaching around 32°C (89°F), the warmth can be felt, making outdoor activities both vibrant and challenging. Rainfall begins to make a subtle entrance, bringing an average of 29 mm over several days, which cools the atmosphere slightly while also elevating humidity levels to around 69%. This blend of warmth and moisture sets April apart as a transitional month, hinting at the coming monsoon season. For further insights on weather trends in the region, explore Jaffna Climate.