Last updated: August 21, 2025
In April, Mostar, Bosnia and Herzegovina, experiences a notable transition into spring, with temperatures ranging from a maximum of 28°C (82°F) to a minimum of -4°C (25°F). The average temperature hovers around a mild 12°C (53°F), making it a refreshing time to explore the city. This month sees 116 mm (4.6 in) of precipitation spread over 11 days, contributing to a humidity level of 75% that enhances the lush landscapes. Visitors can expect a blend of sunny days and occasional showers, perfect for experiencing the vibrant culture and natural beauty of this enchanting destination.
In April, Mostar, Bosnia and Herzegovina, begins to shed the chill of winter, with temperatures gradually warming up. The month features a noticeable rise, with minimum temperatures starting at around -4°C (25°F) and peaking with a comfortable 28°C (82°F) during the day. The average temperature reaches a pleasant 12°C (53°F), making it an ideal time for outdoor exploration. As the month progresses, the transition from the remnants of winter to the vibrant energies of spring becomes evident, setting the stage for even warmer May days ahead. The delightful shift in climate invites visitors to enjoy the stunning landscapes and rich cultural experiences that Mostar has to offer.
April in Mostar marks a transitional phase in precipitation patterns, with the month receiving an average of 116 mm (4.6 in) of rainfall over 11 days. This amount reflects a slight decline from the wetter months preceding it, such as March with 141 mm. However, April's precipitation contributes to a vibrant landscape as spring unfolds, setting the stage for the blooming flowers and lush greenery typical of the region. The consistent pattern of precipitation days in April—mirroring those of the previous three months—suggests a stability in weather patterns, albeit with a promise of warmer and sunnier days on the horizon. As May approaches, residents anticipate an increase in rainfall, which typically peaks in late spring, enriching the soil and nurturing the natural beauty of Mostar.
In April, Mostar experiences a notable drop in humidity, averaging around 75%—a significant decline from the winter months, where humidity hovers around 88% in January. This decrease reflects the transition into spring, as the air begins to feel fresher and more inviting. Following April, humidity levels continue to dip slightly, reaching 74% in May before plummeting to the more comfortable 66% in June. The trend showcases a gradual shift towards a drier climate as Mostar moves into the warmer summer months, making April an ideal time to enjoy the blossoming beauty of the city while still benefiting from relatively high humidity compared to the upcoming summer.
April in Mostar, Bosnia and Herzegovina, marks a notable transition in UV exposure, as the UV Index rises to 7, maintaining a high exposure category. This indicates that outdoor enthusiasts should be more vigilant, with a burn time of just 25 minutes. Compared to the preceding months, the increase reflects the encroaching summer, following a steady climb from January’s low index of 2 to February's moderate 4, and reaching March’s high of 6. As daylight hours extend and temperatures rise, protecting your skin becomes paramount—make sure to stay informed to enjoy the sunny days safely. For a comprehensive guide to UV levels throughout the year, check out Mostar UV Index.
UV Risk Categories
April brings a delightful surge of sunshine to Mostar, Bosnia and Herzegovina, with 354 hours of daylight that hints at the vibrant spring ahead. This increase from the previous months not only reflects the lengthening days but also sets the stage for the warmth of May as it climbs further to 395 hours. The trend of rising sunlight hours from winter to spring showcases an inviting transformation, where the city's historic charm is illuminated by abundant sunshine, encouraging outdoor exploration. As residents and visitors bask in the April rays, the atmosphere is charged with a sense of renewal, making it a perfect time to revel in the beauty of Mostar's landscapes.
In April, Mostar experiences a 43% chance of sunny weather, marking a slight dip from the sunny days typically enjoyed in March. This month transitions from the cooler winter months, where sunshine is less frequent, to the brighter days of late spring. Although April’s likelihood of sun is less than May’s anticipated 50%, it still offers a pleasant retreat as residents and visitors embrace the emerging warmth. Historically, this trend continues into the summer months, where the probability of sunshine peaks—culminating in July and August with impressive chances of 69% and 73% respectively. Thus, while April may not boast the highest chances of sun, it certainly hints at the glorious summer to come.
As spring unfolds in Mostar, Bosnia and Herzegovina, April brings a delightful increase in daylight, with the sun gracing the sky for 13 hours. This shift marks a significant change from the shorter winter days, with daylight gradually extending from just 9 hours in January to a more energetic 11 hours in March. The crescendo of sunlight continues into May and June, peaking at 15 hours—a trend that clearly highlights the joyous arrival of longer, brighter days. April's generous daylight not only invites outdoor adventures but also signals the heartening transition into the warmer months ahead. As nature awakens, the longer evenings become perfect for exploring the picturesque landscapes and vibrant culture that Mostar has to offer.
April in Mostar, Bosnia and Herzegovina, welcomes a gentle breeze with an average wind speed of 2.1 m/s (5 mph), slightly tapering off from the steady 2.2 m/s seen in the preceding winter months. This shift signals the transition into a milder spring, as the region enjoys a refreshing atmosphere without the harsher gusts of earlier months. Following April, wind speeds continue to hover around the same level in May before dipping to their lowest point during the summer months of June and July. Overall, April represents a period of subtle change, where the winds begin to calm, complementing the blooming landscape and welcoming the vibrant energy of spring.
Weather in Mostar varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Mostar, focusing on differences in temperature, rainfall, humidity, and UV levels.
April and January present quite a contrast in weather conditions. In April, temperatures begin to rise, with a minimum of -4°C (25°F) and an average of 12°C (53°F), peaking at a maximum of 28°C (82°F). This month experiences a moderate precipitation level of 116 mm (4.6 in) over 11 days with humidity around 75%. In stark contrast, January is much colder, with temperatures ranging from a minimum of -13°C (8°F) to an average of 3°C (37°F), and a maximum of only 16°C (60°F). January also sees a similar number of rainy days, with 112 mm (4.4 in) of precipitation, but with higher humidity levels at 88%. For more details, check Mostar weather in January.
In comparing the weather patterns of April and February, April typically offers a milder climate, with average temperatures rising to 12°C (53°F) compared to February's average of 6°C (43°F). While February experiences colder minimum temperatures down to -9°C (17°F), April's minimum is slightly higher at -4°C (25°F). Precipitation levels are notable in both months, with April receiving 116 mm (4.6 in) and February a bit more at 151 mm (5.9 in), despite both months having precipitation on 11 days. Furthermore, humidity tends to be higher in February at 82%, compared to April’s 75%. For those interested in specifics about February’s weather, you can find more information here: Mostar weather in February.
In comparing the weather of March and April, April presents a noticeable increase in both average and maximum temperatures, with an average of 12°C (53°F) and a peak of 28°C (82°F), compared to March's average of 8°C (46°F) and a maximum of 22°C (73°F). Despite the warmer temperatures in April, it experiences slightly less precipitation at 116 mm (4.6 in) over 11 days than March’s 141 mm (5.5 in) during the same number of days. Humidity levels are somewhat consistent, with April at 75% and March slightly higher at 79%. For a more detailed look at March weather, check out Mostar weather in March.
April and May exhibit noticeable differences in weather patterns. In April, temperatures range from a chilly minimum of -4°C (25°F) to a pleasant average of 12°C (53°F), peaking at a warm 28°C (82°F). The month experiences 116 mm (4.6 in) of precipitation across 11 days, along with a humidity level of 75%. In contrast, May sees a slight increase in overall warmth, with minimum temperatures starting at 1°C (34°F) and an average of 16°C (62°F), reaching a high of 30°C (87°F). However, the month is also characterized by slightly more rainfall, totaling 132 mm (5.2 in) over 16 days, while humidity remains fairly stable at 74%. For more specific details about how the weather unfolds, you can check Mostar weather in May.
April and June present strikingly different weather conditions. In April, temperatures can plunge to a chilly minimum of -4°C (25°F), while the average hovers around 12°C (53°F) and peaks at a warm 28°C (82°F). This month also sees considerable rainfall, with a total of 116 mm (4.6 in) spread over 11 days and humidity levels climbing to 75%.
In contrast, June features a significantly higher temperature range with a minimum of 7°C (45°F), an average of 21°C (71°F), and a maximum that can soar to 37°C (98°F). Precipitation decreases to 69 mm (2.7 in) over the same number of days and humidity drops to a more comfortable 66%. For a more detailed look at June weather, check out Mostar weather in June.
April and July present stark contrasts in weather patterns. In April, temperatures range from a chilly minimum of -4°C (25°F) to a warm maximum of 28°C (82°F), with an average of 12°C (53°F). The month tends to be quite wet, receiving 116 mm (4.6 in) of precipitation over 11 days, and humidity levels linger around 75%. On the other hand, July offers a much more summery experience, with temperatures ranging from a minimum of 11°C (53°F) to a scorching maximum of 38°C (101°F), and an average of 24°C (76°F). Precipitation drops significantly to just 41 mm (1.6 in) over 5 days, accompanied by lower humidity at 59%. For more details on the July weather, check out Mostar weather in July.
April and August showcase quite a contrast in weather. In April, temperatures can dip as low as -4°C (25°F) at night, but average around a mild 12°C (53°F), reaching a maximum of 28°C (82°F) during the day. This month also experiences considerable precipitation at 116 mm (4.6 in) over about 11 days, combined with a relatively high humidity of 75%. In contrast, August sees much warmer temperatures, with a minimum of 11°C (52°F), an average of 25°C (77°F), and peaks reaching a scorching 41°C (105°F). Precipitation drops significantly to 54 mm (2.1 in) over just 7 days, and humidity decreases to a more comfortable 53%. For a closer look at the weather conditions during this summer month, you can check out Mostar weather in August.
April and September present contrasting weather patterns. In April, temperatures range from a chilly minimum of -4°C (25°F) to a warm maximum of 28°C (82°F), with an average of 12°C (53°F). This month sees a significant amount of precipitation, totaling 116 mm (4.6 in) over 11 days, coupled with a high humidity level of 75%. In contrast, September enjoys milder temperatures, with a minimum of 4°C (39°F), an average of 19°C (67°F), and a maximum reaching 33°C (91°F). Precipitation slightly decreases to 107 mm (4.2 in) over just 9 days, and humidity is more comfortable at 65%. For a detailed look at September's climate, check out Mostar weather in September.
April weather offers a more pronounced swing in temperatures, with lows plunging to -4°C (25°F) while the average settles at 12°C (53°F) and can reach highs of 28°C (82°F). In contrast, October presents milder conditions, where temperatures range from a minimum of 1°C (34°F) to an average of 14°C (57°F) and peak at 27°C (80°F). Both months experience significant precipitation, with April receiving 116 mm (4.6 in) over 11 days, while October sees slightly higher rainfall at 140 mm (5.5 in) over 10 days. Humidity levels also differ slightly, with April at 75% compared to October's 78%. For a detailed look at October weather specifics, visit Mostar weather in October.
April and November exhibit distinct weather patterns, reflecting the transition between spring and autumn. In April, temperatures range from a chilly minimum of -4°C (25°F) to a comfortable maximum of 28°C (82°F), with an average of 12°C (53°F). This month experiences moderate precipitation at 116 mm (4.6 in) over approximately 11 days, accompanied by a humidity level of 75%.
In contrast, November presents cooler temperatures, with a minimum of -3°C (26°F) and a maximum of 21°C (70°F), resulting in a slightly lower average of 10°C (50°F). Precipitation increases significantly to 251 mm (9.9 in) spread over 12 days, while humidity rises to 85%. These factors contribute to a starkly different feeling from the vibrant renewal of April. For a more detailed understanding of how the weather behaves in November, you can check out Mostar weather in November.
In comparing the weather between April and December, significant differences emerge. April features a broader temperature range with minimums around -4°C (25°F) and maximums reaching 28°C (82°F), while December is colder overall, with minimum temperatures dropping to -7°C (19°F) and maximums peaking at just 16°C (62°F). Precipitation is notably higher in December, totaling 248 mm (9.8 in) over 15 days, compared to April's 116 mm (4.6 in) over 11 days. Additionally, December experiences higher humidity levels at 86%, compared to April's 75%. For a more detailed look at December weather in Mostar, check this link: Mostar weather in December.
As April unfolds in Mostar, it marks a delightful transition from the chill of winter to the warmth of spring. With temperatures steadily climbing, this month offers a refreshing change, showcasing an average temperature of 12°C, contrasting sharply with the cooler months preceding it. April witnesses increased humidity levels at 75%, paired with moderate rainfall over 11 days, making the landscape lush and vibrant. Unlike the harsher cold of earlier months, the weather now invites outdoor exploration, perfect for enjoying the stunning natural beauty of the region. For a more detailed understanding of what to expect, check out Mostar Climate.