Last updated: March 19, 2025
April in Colombo, Sri Lanka ushers in a warm tropical ambiance, with temperatures often peaking at a maximum of 33°C (91°F) and averaging around 28°C (83°F). The month is characterized by high humidity levels of approximately 74%, creating a lush environment. However, it also brings a significant amount of rain, with 125 mm (4.9 in) of precipitation spread across 25 days, making April one of the wetter months. Visitors should prepare for a mix of sunny and showery days, perfect for enjoying the vibrant atmosphere of this coastal city.
In April, Colombo experiences slightly warmer temperatures as the island transitions into the hot season. The minimum temperature rises to 25°C (77°F), while the average hovers comfortably at 28°C (83°F). Daytime highs are 33°C (91°F), reflecting a consistent warmth that persists from earlier months. Notably, while the maximum temperatures remain stable compared to March, the increased minimum hints at a shift towards a hotter climate, paving the way for the sultry days of May. Overall, April delivers a delightful blend of warmth, making it an inviting time for visitors to explore the vibrant culture and stunning landscapes of Sri Lanka.
April marks a significant uptick in precipitation in Colombo, Sri Lanka, with an average rainfall of 125 mm (4.9 in) over 25 days. This increase follows the relatively drier months of January through March, which saw consistent but lower amounts of rain. The transition into April signals the onset of the monsoon season, leading to a dramatic rise in both precipitation and rainy days. As the month progresses, the city experiences lush greenery and revitalized landscapes, setting the stage for the much heavier rains in May that can reach 295 mm (11.6 in). The trend highlights a clear shift towards more intense precipitation patterns as the year advances, with April serving as a crucial turning point in Colombo's climatic rhythm.
April in Colombo, Sri Lanka, experiences a moderate humidity level of 74%, closely mirroring the slightly higher figures from the preceding months of January through March. This month marks a transition period just before the onset of the deeper monsoon season, where humidity tends to rise significantly. Following April, humidity levels start to climb, peaking in the mid-year months with values as high as 83% in August. The steady increase from earlier months signifies a gradual shift towards the wetter climate typical for this coastal city, emphasizing Colombo's tropical character and the inevitable rise in moisture leading into the summer.
In April, Colombo, Sri Lanka, experiences its highest UV Index of the year at 15, categorizing the exposure risk as extreme. With a minimal burn time of just 10 minutes, sun protection is crucial throughout this month. This peak in April aligns with the ascending trend observed from January to March, where the UV Index consistently hovered between 12 and 14. Following April, the index slightly reduces in May to 14, but it maintains an extreme exposure category. For those planning outdoor activities, understanding this pattern is essential for safeguarding against harmful UV rays. To learn more about the UV Index trends in Colombo, visit Colombo UV Index.
UV Risk Categories
April in Colombo, Sri Lanka, shines brightly with 334 hours of sunshine, making it a standout month just shy of March's peak. As the year progresses, the city enjoys a generally favorable trend of sunny days, with January starting at 270 hours and gradually climbing to a high of 336 hours in March. April holds onto this warmth with only a slight dip, indicating that the sun's embrace is strong as the region transitions into the wetter months. Interestingly, the consistency continues into May, where the sunshine remains robust at 312 hours. This spring-to-summer pattern highlights Colombo's vibrant climate, promising plenty of opportunities for both locals and visitors to bask in the tropical glow.
In April, Colombo experiences a notable increase in sunny weather, with a 46% chance of sunshine, making it one of the brighter months of the year. This rise follows a somewhat mixed March and is a significant improvement from the cloudier conditions seen during the earlier months, like January and February, which offer only 22% and 53% likelihoods of sun, respectively. April's sunny disposition hints at the approach of the more favorable dry season, especially as the sunny days begin to dwindle again in May, dropping to 17%. Thus, April stands out as a perfect time to enjoy the vibrant city, balancing pleasant warmth with a decent chance of sunshine.
In April, Colombo, Sri Lanka, experiences 12 hours of daylight, mirroring the trend set in the preceding month of March and continuing through May and June. This period of extended daylight offers a delightful balance of light, making it a perfect time for outdoor activities. Notably, the daylight duration peaks in the March to June window, showcasing a gradual increase from 11 hours in January and February to a more energizing 12 hours in the months that follow. As the year progresses towards October, the daylight begins to taper off, reverting to 11 hours. Thus, April serves as a bright junction in Colombo’s annual cycle, where longer days invite both exploration and leisure.
In April, the wind in Colombo experiences a gentle caress at an average speed of 3.0 m/s (7 mph), offering a mild respite before the breezes begin to strengthen in the following months. Compared to the previous month, which saw a notably low 2.3 m/s (5 mph), April shows a slight uplift, even as it remains one of the calmer months in the annual cycle. Historically, wind speeds begin to escalate with the arrival of May, which jumps to 4.4 m/s (10 mph), culminating in the summer months where wind speeds reach their peak. This subtle uptick in April hints at the transitional nature of the season, as the island gradually shifts from the calmer start of the year towards the more lively gusts that characterize the Sri Lankan coastline.
The weather in Colombo 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 Colombo and find detailed weather information for every month.
April generally experiences warmer temperatures compared to January, with average highs reaching 33°C (91°F) and lows at 25°C (77°F), while January maintains a similar maximum temperature of 33°C (92°F) but slightly cooler minimums at 22°C (72°F). April also sees significantly more rainfall, totaling around 125 mm (4.9 in) over 25 days, compared to just 54 mm (2.1 in) across 7 days in January. Humidity levels are somewhat comparable, with April at 74% and January slightly higher at 77%. For more detailed information on January weather in Colombo, you can visit Colombo weather in January.
Comparing the weather between April and February reveals some notable differences. April has a slightly higher average temperature of 28°C (83°F), similar to February's 28°C (82°F), but it experiences a greater range, with maximum temperatures peaking at 33°C (91°F) compared to February's 34°C (94°F). Additionally, April sees significantly more precipitation, totaling 125 mm (4.9 in) over 25 days, whereas February has only 54 mm (2.1 in) across 9 days. Humidity levels are fairly consistent, with April at 74% and February slightly lower at 73%. The wet and warm conditions in April contrast with the drier and mild weather of February, making each month unique in its climate. For more details on February weather, you can check Colombo weather in February.
In comparing the weather of April and March, both months experience similar temperature ranges, with minimums around 24°C to 25°C, averaging 28°C, and maxing out at 33°C. However, April tends to be slightly wetter, with 125 mm of precipitation falling over 25 days, whereas March sees 118 mm over 17 days. Interestingly, humidity levels remain consistent at 74% during both months. For more detailed information, you can check Colombo weather in March.
April and May both feature warm temperatures, with minimums around 25°C (77°F) and average highs reaching close to 33°C (91°F) in April and 32°C (90°F) in May. However, May tends to be wetter, with precipitation increasing significantly to 295 mm (11.6 in) over 29 days, compared to April’s 125 mm (4.9 in) over 25 days. Additionally, humidity levels remain high in both months, with May recording a slightly higher average of 76% compared to April's 74%. For a detailed look at the weather specifics, check out Colombo weather in May.
In April, the weather is characterized by warm temperatures, with a minimum of 25°C (77°F) and an average of 28°C (83°F), peaking at a maximum of 33°C (91°F). The month experiences significant rainfall, totaling 125 mm (4.9 in) over 25 days, and a humidity level of 74%. In contrast, June sees slightly lower maximum temperatures, with a peak of 31°C (87°F), while maintaining a minimum of 25°C (78°F) and an average of 28°C (82°F). However, June is much wetter, accumulating 257 mm (10.1 in) of precipitation over 28 days, along with an increase in humidity to 82%. Overall, while both months are warm, June is significantly wetter and more humid. For a detailed overview, check out Colombo weather in June.
In comparing the weather between April and July, both months maintain a consistent minimum temperature of 25°C (77°F) and an average temperature that hovers around 28°C (82-83°F). However, April experiences slightly higher maximum temperatures, reaching up to 33°C (91°F), while July sees a cooler peak of 30°C (87°F). Precipitation is notably higher in July, with 168 mm (6.6 in) over 26 days compared to April's 125 mm (4.9 in) over 25 days. Additionally, July presents increased humidity levels at 82%, compared to April's 74%, creating a more humid environment during the mid-year. For a more detailed look at July's weather, feel free to visit Colombo weather in July.
April and August showcase distinct weather characteristics, despite having similar minimum temperatures of 25°C (77°F). In April, the average temperature reaches 28°C (83°F), peaking at 33°C (91°F), while in August, the average dips slightly to 27°C (81°F) with a maximum of 30°C (85°F). Both months experience relatively high humidity levels, with August being slightly more humid at 83% compared to April's 74%. Precipitation is notably higher in August, with 189 mm (7.4 in) falling across 27 days, compared to April's 125 mm (4.9 in) over 25 days. For more detailed information on weather conditions in August, you can visit Colombo weather in August.
April and September exhibit similar minimum temperatures, both starting at a warm 25°C (77°F). However, April tends to be hotter overall, with average highs reaching 33°C (91°F), compared to September's more moderate maximum of 30°C (86°F). Rainfall is more significant in September, with 234 mm (9.2 in) recorded over 26 days, which contrasts sharply with April's 125 mm (4.9 in) across 25 days. Additionally, humidity levels rise in September to 82% compared to April's 74%, making the weather feel even more tropical. For a closer look at September's climate, check out Colombo weather in September.
In comparing the weather of April and October, it becomes evident that both months exhibit warm temperatures, though October tends to be slightly cooler. April sees a minimum temperature of 25°C (77°F) and can reach highs of 33°C (91°F), while October’s temperatures range from a minimum of 24°C (76°F) to a maximum of 30°C (86°F). However, October is characterized by significantly higher precipitation at 347 mm (13.6 in) over 29 days, compared to April’s 125 mm (4.9 in) across 25 days. Additionally, October's humidity levels rise to 81%, surpassing April’s 74%. For more detailed information about the weather in October, you can check Colombo weather in October.
April and November showcase contrasting weather patterns, despite their close proximity on the calendar. In April, temperatures range from a minimum of 25°C (77°F) to a maximum of 33°C (91°F), with an average of 28°C (83°F). The month is characterized by significant precipitation, totaling 125 mm (4.9 in) over 25 days, accompanied by a relative humidity of 74%. In comparison, November sees slightly cooler temperatures, with minimums at 24°C (75°F) and maximums reaching 31°C (88°F), averaging around 27°C (81°F). However, it is much wetter, with precipitation reaching 294 mm (11.6 in) spread across 26 days, and humidity climbs to 80%. For those curious about November's specific conditions, check out Colombo weather in November.
In April, temperatures in Colombo range from a minimum of 25°C (77°F) to a maximum of 33°C (91°F), with an average of 28°C (83°F). The month experiences significant rainfall, totaling 125 mm (4.9 in) over 25 days, accompanied by a humidity level of 74%. In contrast, December has slightly cooler temperatures, with a minimum of 23°C (73°F) and a maximum of 32°C (89°F), averaging 27°C (81°F). Rainfall is heavier in December, reaching 179 mm (7.1 in) over 17 days, and humidity is higher at 80%. For a more detailed look at the weather patterns in December, you can check Colombo weather in December.
In April, Colombo experiences a noticeable shift in its climate, characterized by warm temperatures and heightened humidity. With a maximum reach of 33°C (91°F) and an average of 28°C (83°F), this month stands out from the cooler months leading up to it. Rainfall becomes more frequent, with precipitation occurring on nearly every other day, totaling around 125 mm (4.9 in) throughout the month. This vibrant combination of warmth and increased moisture contributes to April’s lush scenery, making it a unique time to experience the beauty of Colombo. For more insights and detailed weather patterns, visit Colombo Climate.