Last updated: August 21, 2025
April in Sveti Vlas, Bulgaria, presents a mild coastal climate characterized by a maximum temperature of 23°C (73°F) and an average of 10°C (51°F). As the month unfolds, temperatures dip to a minimum of 2°C (36°F), inviting layers for the cooler evenings. Visitors can expect about 40 mm (1.6 in) of rainfall spread over 7 days, contributing to the region's lush beauty. With an average humidity of 75%, the air feels refreshing, making this a delightful time for outdoor explorations and enjoying the stunning landscapes of the Bulgarian coastline.
In April, Sveti Vlas experiences a delightful transition into spring, with temperatures beginning to warm up considerably after the chill of winter. The month sees a minimum of 2°C (36°F) and an average temperature of 10°C (51°F), creating a refreshing climate ideal for outdoor activities. As the days progress, the maximum temperature can reach a pleasant 23°C (73°F), inviting visitors to enjoy the budding landscapes and vibrant atmosphere. This notable increase from the cooler March temperatures signals the approach of summer, making April a perfect month for those looking to relish in mild but invigorating weather by the Black Sea.
April in Sveti Vlas marks a transitional phase in the weather, characterized by a moderate decrease in precipitation compared to the preceding months. With 40 mm (1.6 in) of rainfall over 7 days, April is notably drier than both January and March, suggesting a shift towards sunnier skies as spring advances. This trend is typical for the region as the weather gradually warms, paving the way for the vibrant summer months ahead. As we move into May, the pattern of fluctuating precipitation continues, but April's gentle rainfall sets the stage for the blossoming beauty of the Bulgarian coast, making it a delightful time for visitors to enjoy the budding landscape without the burden of frequent rain showers.
In April, Sveti Vlas enjoys a refreshing dip in humidity, dropping to 75%, a shift that marks the continuation of a gradual decline since the winter months. Following the higher levels of 84% in January and 81% in February, the spring air begins to dry out, offering a more comfortable environment for outdoor activities. This trend of decreasing humidity persists into May when it slightly rises to 77%, but remains notably lower than the early winter months. As the region transitions into the summer heat, the humidity continues to decrease, reaching its lowest point of 60% in August. Thus, April signifies a welcome change, paving the way for sunnier and drier days ahead while still retaining enough moisture to keep the landscape vibrant.
In April, Sveti Vlas experiences a UV Index of 7, indicating a high level of sun exposure. This marks a noticeable increase from March's UV Index of 6, signaling the transition into sunnier days as spring takes hold. With a burn time of just 25 minutes, it's essential to take precautions when enjoying outdoor activities, as prolonged exposure without protection can lead to skin damage. As we move into May and the UV Index escalates to a very high level of 8, it’s clear that the trend is shifting towards more intense sun exposure. For detailed information throughout the year, check out the Sveti Vlas UV Index.
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April marks a delightful transition in Sveti Vlas, Bulgaria, as the hours of sunshine significantly increase to 349 hours, painting the landscape in vibrant light and warmth. This upward trend from the chillier months is evident, with January starting at a modest 165 hours and steadily climbing through February (227 hours) and March (289 hours). April sets the stage for the blossoming days ahead, leading into May's impressive 396 hours and peaking in summer with July’s 429 hours. This steady growth reflects the enchantment of spring, inviting visitors and locals alike to bask in the sun-drenched glory of this beautiful coastal town. The gradual increase in sunshine not only brightens the days but also heralds the thriving atmosphere that characterizes the warmer months in Sveti Vlas.
As spring unfolds in Sveti Vlas, April boasts a 44% chance of sunny weather, matching the slightly brighter month of March. This period marks a transition where the sun begins to outshine the winter gloom. With the likelihood of sunny skies steadily increasing as the months progress, May edges slightly higher at 46%, foreshadowing the approaching summer. Notably, the peak of sunny weather arrives in the heart of summer, with chances soaring to 77% in July and remaining high through August. Thus, April serves as a promising beginning to the sun-filled months while still hanging on to the cooler breezes of early spring.
As April unfolds in Sveti Vlas, Bulgaria, the days begin to noticeably lengthen, offering 13 hours of daylight—a delightful increase that signals the arrival of spring. This trend of gradually extending daylight continues from the earlier months, where January and February see only 9 and 10 hours respectively. March serves as a bridge, introducing 11 hours of light that sets the stage for April's vivid transformation. The progressive increase culminates in May and June, boasting 14 and 15 hours of daylight, before gently tapering off in the summer's latter half. This gradual transition not only enhances outdoor experiences but also cultivates an inviting atmosphere, making April a vibrant month in Sveti Vlas.
In April, Sveti Vlas experiences a gentle shift in its breezy embrace, with an average wind speed of 2.9 m/s (7 mph), marking a noticeable decrease from the gustier months of winter and early spring. This month serves as a transition, where the winds calm down compared to March’s 4.1 m/s and February’s 3.9 m/s. As the region welcomes warmer days, the lighter breezes become a delightful backdrop for outdoor activities and leisurely strolls along the picturesque coastline. The trend continues into May with winds slightly picking up to 3.2 m/s (7 mph), suggesting that while April may be the calm before the summer breezes, it offers a serene atmosphere perfect for enjoying the beauty of Sveti Vlas.
Weather in Sveti Vlas varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Sveti Vlas, focusing on differences in temperature, rainfall, humidity, and UV levels.
April generally exhibits milder weather compared to January, with temperatures ranging from a minimum of 2°C (36°F) to a pleasant maximum of 23°C (73°F) and an average of 10°C (51°F). In contrast, January experiences colder temperatures, with a minimum of -10°C (14°F) and an average of 4°C (39°F), peaking at 16°C (61°F). Additionally, while April sees approximately 40 mm (1.6 in) of precipitation over 7 days, January has a higher precipitation level of 66 mm (2.6 in) across 8 days, coupled with slightly higher humidity at 84% compared to 75% in April. For a more detailed look, visit Sveti Vlas weather in January.
April generally offers milder and more pleasant weather compared to February. With average temperatures ranging from a minimum of 2°C (36°F) to a maximum of 23°C (73°F), April enjoys a more comfortable feel, especially with an average temperature of 10°C (51°F). In contrast, February is cooler, with temperatures dipping as low as -5°C (23°F) and averaging around 6°C (42°F). Additionally, while both months experience precipitation over approximately the same number of days (7), April sees slightly less rainfall at 40 mm (1.6 in) compared to February's 48 mm (1.9 in). However, February tends to be slightly more humid at 81%, compared to April's 75%. For more detailed information about February's weather, you can visit Sveti Vlas weather in February.
Comparing the weather of April and March reveals a notable shift in temperatures and conditions. In April, minimum temperatures rise to 2°C (36°F), with an average of 10°C (51°F) and a maximum reaching 23°C (73°F), indicating a warmer transition towards spring. In contrast, March experiences colder temperatures, with a minimum of -9°C (16°F), an average of 7°C (45°F), and a maximum of 19°C (67°F). Additionally, precipitation decreases from 57 mm (2.3 in) over 9 days in March to 40 mm (1.6 in) over 7 days in April, while humidity remains slightly lower in April at 75%, compared to March's 79%. For a more detailed look at March weather conditions, you can check Sveti Vlas weather in March.
April and May present a noticeable shift in weather conditions. In April, temperatures range from a chilly 2°C (36°F) at night to a comfortable 23°C (73°F) during the day, with an average of 10°C (51°F). April sees about 40 mm (1.6 in) of precipitation over 7 days, accompanied by a relative humidity of 75%. In contrast, May brings warmer temperatures, with lows of 7°C (45°F), average highs of 16°C (62°F), and maximum temperatures reaching 27°C (81°F). The month records slightly higher precipitation at 46 mm (1.8 in) across 8 days, with a humidity level that is just a touch higher at 77%. For a closer look at the weather trends in May, visit Sveti Vlas weather in May.
April and June present distinct contrasts in weather. In April, temperatures range from a chilly minimum of 2°C (36°F) to a comfortable maximum of 23°C (73°F), with an average around 10°C (51°F). The month sees about 40 mm (1.6 in) of rain spread over 7 days, contributing to a higher humidity level of 75%. In comparison, June warms up significantly, with temperatures fluctuating between a minimum of 12°C (53°F) and a high of 30°C (87°F), averaging 21°C (70°F). However, this month also experiences more rainfall, totaling 82 mm (3.2 in) over 14 days, while humidity drops slightly to 71%. For more detailed insights on June weather in the region, check out Sveti Vlas weather in June.
April and July present contrasting weather patterns, reflecting the transition from spring to summer. In April, temperatures range from a cool minimum of 2°C (36°F) to a mild maximum of 23°C (73°F), with an average of 10°C (51°F). This month experiences about 40 mm (1.6 in) of rainfall over roughly 7 days, coupled with a higher humidity of 75%. In stark contrast, July boasts significantly warmer conditions, with temperatures starting at a minimum of 16°C (62°F) and reaching a high of 33°C (91°F), resulting in an average of 23°C (75°F). Although July sees slightly more precipitation at 50 mm (2.0 in) over the same number of rainy days, the humidity drops to 69%, creating a more comfortable atmosphere. For more details on the July weather, check out Sveti Vlas weather in July.
April's weather contrasts sharply with that of August, demonstrating a significant seasonal shift. In April, temperatures range from a chilly 2°C (36°F) at night to a mild 23°C (73°F) during the day, with an average of 10°C (51°F). This month experiences considerable rainfall with 40 mm (1.6 in) across about 7 days and a higher humidity level of 75%, making it feel quite damp.
In comparison, August boasts much warmer conditions, with nighttime lows of 16°C (62°F) and daytime highs reaching up to 33°C (91°F), averaging around 24°C (76°F). The precipitation is minimal at just 15 mm (0.6 in) over approximately 3 days, and the humidity drops to a more comfortable 60%. For those interested in the specifics of the weather during this summer month, more details can be found in the following link: Sveti Vlas weather in August.
April and September showcase distinct differences in weather patterns. In April, temperatures range from a chilly minimum of 2°C (36°F) to a pleasant average of 10°C (51°F), peaking at a maximum of 23°C (73°F). The month experiences about 40 mm (1.6 in) of precipitation over roughly 7 days, coupled with a higher humidity level of 75%. In contrast, September offers a much warmer climate, with temperatures starting from a minimum of 10°C (50°F), averaging 21°C (69°F), and reaching highs of 30°C (86°F). This month has significantly reduced precipitation at 22 mm (0.9 in) over just 5 days, accompanied by lower humidity at 63%. For more details on September weather, you can visit Sveti Vlas weather in September.
In April, the weather begins to warm up, with temperatures ranging from a chilly 2°C (36°F) to a pleasant 23°C (73°F), while the average temperature hovers around 10°C (51°F). Rainfall is moderate, with about 40 mm (1.6 in) expected over about 7 days, and humidity levels are relatively high at 75%.
In contrast, October typically boasts milder temperatures, with a minimum of 7°C (45°F) and a maximum of 27°C (81°F), leading to an average of 15°C (60°F). However, it is also more likely to experience precipitation, totaling 69 mm (2.7 in) across the same number of rainy days. The humidity remains similar at 76%, making both months feel quite comparable in dampness. For more details on October weather, you can check out Sveti Vlas weather in October.
April and November offer distinct weather experiences as the seasons transition. In April, temperatures range from a minimum of 2°C (36°F) to a maximum of 23°C (73°F), with an average of 10°C (51°F). The month brings approximately 40 mm (1.6 in) of precipitation over about 7 days, accompanied by a humidity level of 75%. In contrast, November experiences a slightly colder minimum of -1°C (30°F) but maintains a similar maximum temperature of 23°C (74°F) and an average of 11°C (52°F). This month sees a higher precipitation of 59 mm (2.3 in) spread across 8 days, with humidity rising to 81%. For a more detailed look at the weather specifics in November, you can check Sveti Vlas weather in November.
April and December present notably contrasting weather patterns. In April, temperatures range from a minimum of 2°C (36°F) to a pleasant average of 10°C (51°F), peaking at 23°C (73°F). The month sees about 40 mm (1.6 in) of precipitation over approximately 7 days, accompanied by a humidity level of 75%. In contrast, December's climate is chillier, with temperatures dipping as low as -5°C (24°F), averaging 7°C (45°F), and reaching a maximum of 19°C (66°F). This month experiences higher precipitation of 75 mm (2.9 in) across 10 days, along with increased humidity at 84%. For a detailed look at December's weather specifics, check out Sveti Vlas weather in December.
As April unfolds in Sveti Vlas, it brings a refreshing transition from the chill of winter to the promise of spring. With temperatures gradually warming, visitors can enjoy mild afternoons, contrasting with the cooler nights that still hint at winter's retreat. Although April sees more moisture than the preceding months, the average humidity remains moderate, creating a comfortable atmosphere. The occasional rainfall, experienced over about a week, contributes to the lush greenery that begins to emerge this time of year. For those planning to visit, it’s a delightful shift that offers a balance of sunny days and gentle showers, ideal for exploring the beauty of the region. To further understand the unique climate dynamics, check out Sveti Vlas Climate.