Last updated: August 21, 2025
April in Istro, Greece offers a delightful weather experience, characterized by a pleasant average temperature of 15°C (60°F), reaching a maximum of 24°C (76°F) on warmer days. With minimum temperatures dropping to 10°C (49°F), the climate is perfect for outdoor activities. The month sees about 18 mm (0.7 in) of precipitation, typically spread across just 2 days, making sunny spells the norm. Although the humidity level sits at a moderate 79%, the overall conditions create an inviting atmosphere for exploring the beauty of this charming locale in spring.
In April, Istro, Greece, begins to shake off the lingering chill of winter, presenting a delightful transition into spring. With minimum temperatures rising to 10°C (49°F) and daytime highs peaking at an enjoyable 24°C (76°F), this month often brings a refreshing warmth that invites outdoor exploration. The average temperature settles around 15°C (60°F), making it an ideal time for visitors to bask in the beauty of blooming landscapes and pristine beaches. As the month progresses, the notable increase in warmth signals not just a shift in temperature but also the promise of vibrant festivities and a lively atmosphere, setting the stage for the busier summer months ahead.
In April, Istro, Greece experiences a noticeable shift in precipitation patterns, with an average rainfall of just 18 mm (0.7 in) over a mere 2 days. This marks a significant decrease from the previous months, as both January and February brought much heavier rains, averaging over 40 mm across multiple rainy days. The lighter showers in April signal the transition to drier conditions, setting the stage for the hot summer months ahead, where rainfall drops dramatically to a mere 2 mm in July and 1 mm in August. This trend highlights the region's move towards a Mediterranean climate, characterized by wet winters and dry, scorching summers.
April in Istro, Greece, marks a notable rise in humidity, reaching 79%—a change that signals the approach of warmer months. This increase from 75% in March sets the stage for the upcoming summer, as humidity steadily climbs through May, peaking at a robust 85%. The gradual progression from January's consistent 72% to April's heightened levels reflects the region's transition from the cooler, drier winter months to a more tropical atmosphere. This trend not only accentuates the beauty of spring in Istro but also hints at the balmy conditions that lie ahead, inviting both locals and visitors to enjoy the vibrant surroundings as nature comes alive.
As April unfolds in Istro, Greece, the UV Index reaches a striking 9, marking a shift into the very high exposure category. This increase from the previous months indicates a significant acceleration in sun intensity, with potential burn times dropping to just 15 minutes. Compared to March’s UV Index of 7, where exposure was classified as high and burn time extended to 25 minutes, it’s clear that the sun's rays are becoming more intense as spring progresses. This trend continues into May, where the UV Index climbs even higher to 10. For visitors and locals alike, it’s essential to stay vigilant and take protective measures against the sun’s powerful rays. For detailed information on UV guidelines in this beautiful region, visit Istro UV Index.
UV Risk Categories
April in Istro, Greece, ushers in a delightful surge of sunshine, boasting an impressive 350 hours of sunlit days. This marks a notable increase from the 337 hours celebrated in March, as spring's warm embrace takes hold. The trend continues to rise as May approaches, promising even brighter days ahead with 397 hours expected. Following the gradual ascent from the winter months, where January lingered at 218 hours, the sunshine in April represents a substantial leap into the vibrant energies of spring. As the days lengthen, Istro invites visitors to bask in its radiant allure, promising an enriching experience as nature awakens in full bloom.
As spring unfolds in Istro, Greece, the likelihood of sunny weather in April settles at a pleasant 65%, providing a delightful backdrop for outdoor activities. This figure is a slight dip from March's 67%, indicating a gradual transition towards more stable, sunny conditions as the region heads into the blissful warmth of May, which boasts an impressive 83% chance of sunshine. The pattern of increasing sunshine continues through the summer months, peaking in July and August at nearly 99%. Thus, while April may greet visitors with a mix of sun and clouds, its sunlit days promise a vibrant start to the Mediterranean season, leading into the idyllic summers that Istro is known for.
As spring unfolds in Istro, Greece, April heralds a delightful increase in daylight hours, reaching an invigorating 13 hours. This seasonal shift follows the gradual transition from winter, where daylight lingers around 10 hours in January and February. The climb begins in March, with an additional hour of light, setting the stage for the burgeoning spring and summer months. Following April, May boasts even longer days with 14 hours of sunshine, perfectly complementing the vibrant landscape. This trend of extended daylight not only enhances the overall ambiance but also invites residents and visitors alike to embrace outdoor adventures and bask in the beauty of nature as it awakens.
April in Istro, Greece, brings a gentle shift in the wind, with an average speed of 5.3 m/s (12 mph), slightly lower than the breezy conditions of previous months. This softening is a precursor to the milder summer months, as May and June follow with even calmer days, averaging 3.7 m/s (8 mph) and 3.9 m/s (9 mph), respectively. While January and February start the year with stronger gusts of 5.7 m/s (13 mph), the overall trend shows a gradual decline as spring unfolds, creating a serene atmosphere ideal for leisurely strolls along the stunning coast. As we transition into the summer, wind speeds pick up again, but for now, April's winds offer a refreshing yet tranquil respite, perfect for enjoying the blossoming landscapes of Istro.
Weather in Istro varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Istro, focusing on differences in temperature, rainfall, humidity, and UV levels.
April and January present contrasting weather patterns. In April, the temperatures range from a minimum of 10°C (49°F) to a maximum of 24°C (76°F), with an average of 15°C (60°F), creating a milder and more pleasant climate. Additionally, April sees significantly less precipitation, with only 18 mm (0.7 in) over just 2 days, accompanied by a higher humidity of 79%. In contrast, January experiences cooler temperatures, ranging from a minimum of 4°C (40°F) to a maximum of 19°C (66°F), with an average of 12°C (54°F). This month also has higher rainfall, totaling 42 mm (1.7 in) over 8 days, along with a slightly lower humidity level of 72%. For more detailed information on January weather, you can check Istro weather in January.
April generally presents milder and more pleasant weather compared to February. With average temperatures reaching 15°C (60°F) and a maximum of 24°C (76°F), April is significantly warmer, while February has a cooler average of 13°C (55°F) and max temperatures around 17°C (64°F). Additionally, April sees less rain, with only 18 mm (0.7 in) over 2 days, in stark contrast to February's 41 mm (1.6 in) of precipitation over 6 days. Humidity levels are slightly higher in April at 79%, compared to 72% in February, making April a more suitable time for outdoor activities. For a detailed look at February weather, visit Istro weather in February.
April generally offers warmer and more pleasant weather compared to March. The minimum temperature in April is 10°C (49°F), which is notably higher than March's low of 5°C (42°F). With average temperatures of 15°C (60°F) in April versus 13°C (56°F) in March, the arrival of spring is certainly felt. Additionally, April sees a higher maximum temperature of 24°C (76°F), lending itself to more comfortable, outdoor-friendly days. Although precipitation is slightly lower in April at 18 mm (0.7 in) compared to 36 mm (1.4 in) in March, the number of rainy days also decreases from five days in March to just two in April. Humidity remains relatively stable, with April at 79% and March at 75%. For more detailed insights on March conditions, you can check Istro weather in March.
April and May present a distinct shift in weather patterns. April boasts a mild climate with temperatures ranging from a minimum of 10°C (49°F) to a maximum of 24°C (76°F), while May warms up significantly, with temperatures varying from a minimum of 14°C (57°F) to a peak of 30°C (86°F). Both months experience similar levels of precipitation at 18 mm (0.7 in) over just 2 days, but May brings slightly higher humidity at 85% compared to April's 79%. This transition marks the arrival of warmer and more humid conditions, indicative of the onset of summer. For more detailed insights about May’s weather, you can check out Istro weather in May.
In April, the weather tends to be milder with average temperatures ranging from a minimum of 10°C (49°F) to a maximum of 24°C (76°F). This month sees relatively low precipitation, averaging 18 mm (0.7 in) over just 2 days, while the humidity hovers around 79%. Conversely, by June, temperatures rise significantly, with a minimum of 17°C (62°F) and a maximum of 32°C (89°F), making it much warmer overall. June also experiences lower precipitation, with only 9 mm (0.3 in) over just 1 day, but humidity slightly increases to 84%. For more detailed weather insights for this month, you can check Istro weather in June.
April and July showcase a notable contrast in weather conditions. In April, temperatures range from a minimum of 10°C (49°F) to a maximum of 24°C (76°F), with an average of 15°C (60°F). The month is relatively mild but experiences some rainfall, with 18 mm (0.7 in) of precipitation over 2 days and humidity sitting at 79%. In stark comparison, July offers much warmer temperatures, with a minimum of 21°C (70°F) and a maximum reaching 34°C (94°F), averaging at 25°C (78°F). Rainfall is minimal in July, only 2 mm (0.1 in) with no rainy days, and humidity slightly rises to 83%. For more insights into July weather, check out Istro weather in July.
April and August present quite contrasting weather conditions. In April, temperatures range from a mild minimum of 10°C (49°F) to a pleasant maximum of 24°C (76°F), with an average of 15°C (60°F). The month sees approximately 18 mm (0.7 in) of rain over 2 days, and the humidity hovers around 79%, creating a fresh and slightly damp atmosphere. In stark comparison, August boasts much warmer temperatures, with a minimum of 22°C (72°F), an average of 26°C (79°F), and a maximum that can reach up to 32°C (89°F). This summer month experiences very little rainfall, with just 1 mm (0.1 in) recorded over 0 days, and the humidity rises slightly to 81%. For more details on August weather, you can check Istro weather in August.
April and September present distinct yet pleasant weather characteristics. In April, temperatures range from a cool 10°C (49°F) to a comfortable 24°C (76°F), with an average of 15°C (60°F). The month sees light precipitation of about 18 mm (0.7 in) over approximately two days, and humidity sits at a moderate 79%. In contrast, September offers warmer conditions, with temperatures fluctuating from 19°C (67°F) to a peak of 30°C (87°F), averaging around 24°C (76°F). Rainfall is minimal, totaling just 6 mm (0.2 in) over one day, while the humidity remains slightly higher at 80%. To explore more about the weather during this time, you can visit Istro weather in September.
April and October present distinct weather characteristics, marking the transition between spring and autumn. In April, temperatures range from a minimum of 10°C (49°F) to a maximum of 24°C (76°F), with an average of 15°C (60°F). The month sees relatively low precipitation, totaling 18 mm (0.7 in) over just 2 days, alongside a higher humidity of 79%. In contrast, October enjoys warmer temperatures, with a minimum of 15°C (60°F) and a maximum reaching 29°C (84°F), averaging around 21°C (70°F). Precipitation is slightly lower at 16 mm (0.6 in) but occurs over 3 days, with humidity remaining close behind at 77%. For more details about October weather, visit Istro weather in October.
April and November share similar maximum temperatures, both reaching up to 24°C (76°F), but their overall climate characteristics differ. In April, temperatures range from a minimum of 10°C (49°F) to an average of 15°C (60°F), with relatively low precipitation of 18 mm (0.7 in) over just 2 days and a higher humidity level of 79%. In contrast, November experiences slightly warmer temperatures, with a minimum of 13°C (55°F) and an average of 18°C (65°F). However, it sees increased rainfall of 41 mm (1.6 in) across 5 days, accompanied by a decrease in humidity at 73%. For a more detailed look at November weather, visit Istro weather in November.
In comparing the weather of April and December, we see some notable differences. April typically boasts a wider temperature range, with minimums reaching 10°C (49°F) and maximums climbing up to 24°C (76°F), offering more warmth during the day. In contrast, December presents a cooler climate, with temperatures peaking at 19°C (67°F), while maintaining a similar average temperature of 15°C (59°F). Precipitation is considerably higher in December, with 51 mm (2.0 in) over 8 days compared to April’s 18 mm (0.7 in) across just 2 days, indicating a wetter month. Despite the higher precipitation, December's humidity is slightly lower at 72% compared to April's 79%. For a more detailed look at December’s weather, you can check out Istro weather in December.
As spring unfolds in Istro, April brings a delightful shift in weather, setting itself apart from the cooler winter months. With temperatures gradually rising, the average is pleasantly mild, encouraging outdoor activities amid the vibrant blooming scenery. Contrary to the often dreary winter, April typically witnesses minimal rainfall, making it an ideal time for exploration. The higher humidity levels create a refreshing atmosphere, enhancing the overall experience for locals and visitors alike. This month perfectly balances the warmth of approaching summer without the intensity, making it a charming season to enjoy all that Istro has to offer. For a more detailed understanding of the area's weather patterns throughout the year, check out Istro Climate.