April Weather in Zagreb, Croatia

Last updated: March 17, 2025

In April, Zagreb, Croatia experiences a dynamic transition into spring, with temperatures ranging from a brisk minimum of -6°C (21°F) to a warm maximum of 29°C (85°F). The average temperature hovers around 12°C (54°F), making it a pleasant yet unpredictable month. Frequent precipitation—totaling 68 mm (2.7 in) over 9 days—ensures the landscape remains lush and vibrant, while the humidity level of 72% adds a touch of moisture to the air, enhancing the fresh spring ambiance. Prepare for both sunny afternoons and occasional showers as Zagreb comes alive in April!

April Temperature in Zagreb

In April, Zagreb begins to shake off the chill of winter, with temperatures making a noticeable leap. The minimum temperature hovers around a cool -6°C (21°F), while the city experiences a cheerful average of 12°C (54°F), marking a significant rise from the preceding months. As the days lengthen, the maximum temperature can reach a pleasant 29°C (85°F), offering a glimpse of the warmth to come in the following months. This transitional month sets a vibrant tone for spring, inviting residents and visitors alike to embrace the milder weather as flowers bloom and outdoor activities beckon. As nature awakens, the refreshing change in temperature in April clearly signals that winter has retreated, making way for a more cheerful and inviting atmosphere in the heart of Croatia.

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

The chart illustrates April temperature patterns in Zagreb, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec344045546271737464544538
Data source: Temperature data for Zagreb 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 Zagreb

April in Zagreb sees a surge in precipitation, with an average of 68 mm (2.7 in) over 9 rainy days. This marked increase from March's 52 mm indicates the arrival of spring, as the region transitions from the drier winter months. The escalating rainfall sets the stage for May's even more substantial 120 mm, but April's showers are vital for rejuvenating the lush landscapes of Croatia. This month effectively bridges the gap between the cooler, less humid days of early spring and the more consistent rain that characterizes the upcoming months, reflecting a clear trend toward increased moisture leading into summer.

April Precipitation Trends in Zagreb

The chart displays monthly precipitation patterns in Zagreb, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3966526812096887498849086
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Zagreb

As April arrives in Zagreb, Croatia, residents and visitors experience a notable drop in humidity to 72%, a pleasant shift following the higher levels typical of the winter months. This gradual decline from January's 89% helps usher in a fresher spring atmosphere, with humidity decreasing steadily from 75% in March. April's levels are slightly higher than those of May and June, which see further decreases to 70% and 69%, respectively. This ongoing trend towards lower humidity continues into the sweltering summer months, ultimately reaching the driest period in August at just 51%. Overall, April marks a transitional phase, where the air feels notably lighter and is often embraced as a precursor to the warmer, drier days ahead.

April Average Humidity in Zagreb

This chart illustrates the average monthly humidity levels in Zagreb, 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.
JanFebMarAprMayJunJulAugSepOctNovDec89%83%75%72%70%69%64%51%62%81%87%88%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Zagreb

As spring unfolds in Zagreb, Croatia, April brings a notable rise in the UV Index, reaching a level of 6, indicative of high exposure that calls for caution. This increase from March's moderate index reflects a shift towards sunnier days, resulting in a reduced burn time of just 25 minutes for those spending time outdoors. The trend is expected to continue, with May and June intensifying exposure further, climbing to levels categorized as very high. It's important for residents and visitors alike to be mindful of these changes and take necessary precautions to protect their skin. For more detailed information on daily UV levels, check out Zagreb UV Index.

Maximum UV Index Levels in Zagreb for April

The chart shows the monthly maximum UV Index (UVI) for Zagreb 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.
JanFebMarAprMayJunJulAugSepOctNovDec235689986532
Data source: Zagreb 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 Zagreb

April in Zagreb brings a delightful surge in sunshine, with 335 hours of radiant light illuminating the city. This month marks a notable increase compared to the previous months, particularly when juxtaposed against the 307 hours of sunshine in March. As the city begins to shed the chill of winter, the gradual ascent in daylight continues into May, where residents can bask in 371 hours of sun. The trend is clear: spring awakens Zagreb with a vibrant glow, inviting exploration and outdoor activities as longer days herald the arrival of summer. This uplifting transformation not only enhances the city's natural beauty but also rejuvenates the spirits of both locals and visitors alike.

Monthly Sunshine Duration in Zagreb: April Highlighted

The April sunshine duration represents the total number of hours Zagreb 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.
JanFebMarAprMayJunJulAugSepOctNovDec162h226h307h335h371h406h426h391h326h288h191h204h
Data source: Zagreb April Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Zagreb During April

As spring unfolds in Zagreb, Croatia, the likelihood of sunny weather in April offers a refreshing dip from the preceding months. With a sun chance of 41%, April marks a transitional phase, displaying a slight dip compared to the sunshine peaks of March at 58%. This decline hints at the unpredictability of early spring, where clouds may still loom, yet the season promises a vibrant contrast to the colder winter months. Looking ahead, the sun's frequency begins to climb again during late spring and early summer, suggesting April can be both a mixed bag and a prelude to sunnier days. Thus, while the sun may not always shine brightly, April undeniably heralds the arrival of warmer weather and longer days ahead.

Percentage of Sunny Days in April in Zagreb

The chart illustrates the percentage of sunny days in Zagreb 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 Zagreb experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec28%48%58%41%39%57%50%50%52%39%21%28%
Data source: Zagreb April chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Zagreb in April

As April unfolds in Zagreb, Croatia, the city basks in a significant increase in daylight, enjoying approximately 13 hours of sunshine. This marks a delightful transition from the shorter days of winter, with daylight steadily increasing from 9 hours in January to a full 11 hours by March. The arrival of spring brings not only warmer temperatures but also an additional two hours of daylight in April, paving the way for outdoor activities and vibrant blooming landscapes. As the city gears up for the summer months, May will see daylight extend even further to 14 hours, showcasing an upward trend that highlights the seasonal change. Zagreb is truly alive in April, as the longer days allow residents and visitors alike to appreciate the picturesque charm of the city.

Average Daylight Hours in Zagreb for April

The chart illustrates the variation in daylight duration in Zagreb throughout the year, with April highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 6m10h 21m11h 56m13h 33m14h 56m15h 38m15h 16m14h 2m12h 29m10h 52m9h 27m8h 43m
Data source: Zagreb daylight hours, calculated by summing the hours between sunrise and sunset for each day.

April Winds in Zagreb

April in Zagreb heralds a slight uptick in the breeze, with average wind speeds reaching 2.4 m/s (5 mph), marking a gentle but refreshing shift from the previous months. This gentle increase mirrors the awakening of spring, as the wind dances through the budding trees and historic streets of the city. While January through March lingered around a steady 2.2 m/s, April's winds hint at the forthcoming warmth of May, which cools to 2.3 m/s as summer approaches. The pattern reflects subtle fluctuations, with the winds calming in the hotter months, making April a delightful time to experience the invigorating atmosphere of Zagreb.

Average April Wind Speed in Zagreb

The chart displays monthly wind speed patterns in Zagreb, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.22.22.32.4 m/s2.31.92.01.71.82.11.81.8
Data source: Zagreb April wind data, generated using information from the Copernicus Climate Change Service.

How April Weather in Zagreb Compares to Other Months

The weather in Zagreb 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 Zagreb and find detailed weather information for every month.

April and January present contrasting weather patterns, with April generally marking the transition into warmer temperatures. In April, temperatures range from a chilly minimum of -6°C (21°F) to a comfortable average of 12°C (54°F), peaking at a maximum of 29°C (85°F). In comparison, January experiences colder conditions, with temperatures dipping as low as -12°C (11°F) and an average of only 1°C (34°F), reaching a maximum of 16°C (62°F). While April sees more significant rainfall at 68 mm (2.7 in) over 9 days, January features lighter precipitation of 39 mm (1.5 in) spread over 8 days. Additionally, humidity is noticeably higher in January at 89%, compared to 72% in April. For more information, check out Zagreb weather in January.

April generally offers a milder climate compared to February, with average temperatures rising from 4°C (40°F) in February to a more pleasant 12°C (54°F) in April. While both months see approximately nine days of precipitation, April experiences slightly more rainfall at 68 mm (2.7 in) compared to February's 66 mm (2.6 in). Additionally, humidity is typically lower in April at 72%, in contrast to the higher humidity levels of 83% noted in February. For more detailed information, you can visit Zagreb weather in February.

In comparing the weather between March and April, April sees notably milder temperatures, with an average of 12°C (54°F) compared to March's average of just 7°C (46°F). The minimum temperature in April is also higher at -6°C (21°F) versus -15°C (6°F) in March, making it a more pleasant month overall. Additionally, April experiences a maximum temperature of 29°C (85°F), significantly warmer than March’s peak of 23°C (74°F). In terms of precipitation, April has slightly more rainfall at 68 mm (2.7 in) over 9 days, while March records 52 mm (2.1 in) over 8 days, contributing to a marginally higher humidity level in April at 72% compared to March's 75%. Overall, April offers a significant transition into warmer weather. For further details, you can explore Zagreb weather in March.

In comparing the weather between April and May, we see a clear transition towards warmer conditions. April experiences a wider temperature range, with a minimum of -6°C (21°F) and a maximum of 29°C (85°F), leading to an average temperature of 12°C (54°F). In contrast, May boasts milder temperatures, with a minimum of 3°C (37°F), an average of 16°C (62°F), and a peak of 31°C (89°F). Although April has slightly lower total precipitation at 68 mm (2.7 in) over 9 days, May sees a significant increase in rainfall, totaling 120 mm (4.7 in) across 17 days. Humidity remains fairly consistent between the two months, with April at 72% and May at 70%. For more detailed information on weather patterns, you can visit Zagreb weather in May.

April and June present contrasting weather conditions. April typically sees temperatures ranging from a chilly minimum of -6°C (21°F) to a pleasant average of 12°C (54°F), with maximums reaching up to 29°C (85°F). This month experiences about 68 mm (2.7 in) of precipitation over nine days, accompanied by a relatively high humidity of 72%. In contrast, June boasts significantly warmer temperatures, with a minimum of 8°C (47°F) and an average of 22°C (72°F), peaking at a scorching 37°C (99°F). The precipitation increases to 96 mm (3.8 in) across 12 days, but humidity remains slightly lower at 69%. Overall, while April is characterized by cooler and more variable weather, June offers a warmer and more humid atmosphere. For more detailed insights, you can check Zagreb weather in June.

April weather is characterized by cooler temperatures, with a minimum of -6°C (21°F) and an average of 12°C (54°F), while July enjoys significantly warmer conditions, featuring a minimum of 10°C (50°F) and an average of 23°C (74°F). The maximum temperatures in April can reach up to 29°C (85°F), whereas July peaks at a scorching 36°C (97°F). Precipitation is also slightly higher in July, with 88 mm (3.5 in) over 11 days compared to April's 68 mm (2.7 in) over 9 days. Additionally, humidity levels in July are lower at 64%, making the heat more bearable than the higher humidity of 72% found in April. For more detailed information, you can check out Zagreb weather in July.

April and August exhibit contrasting weather patterns. In April, temperatures can range from a chilly -6°C (21°F) to a warm 29°C (85°F), with an average of 12°C (54°F). This month sees about 68 mm (2.7 in) of precipitation across 9 days, coupled with a higher humidity level of 72%. In contrast, August boasts milder nights with lows of 9°C (49°F) and hotter days, peaking at a scorching 39°C (103°F) and averaging 23°C (74°F). Precipitation slightly increases to 74 mm (2.9 in) over 10 days, but humidity drops to a comfortable 51%. For more detailed information about weather conditions during this summer month, you can check Zagreb weather in August.

April and September showcase distinct shifts in weather patterns. In April, temperatures range from a chilly minimum of -6°C (21°F) to a pleasant average of 12°C (54°F), with maximums reaching 29°C (85°F). The month is characterized by moderate precipitation of 68 mm (2.7 in) over about 9 days, accompanied by a higher humidity level of 72%.

Conversely, September experiences warmer conditions, with temperatures ranging from a minimum of 3°C (38°F) to a comfortable average of 18°C (64°F), peaking at 34°C (93°F). The precipitation increases slightly to 98 mm (3.9 in) over 10 days, while humidity drops to 62%. For more detailed information about weather conditions during September, you can visit Zagreb weather in September.

April and October showcase a transition in weather patterns, yet both months present a similar average temperature of around 12°C (54°F). In April, temperatures can swing significantly, with a minimum reaching as low as -6°C (21°F) and a maximum of up to 29°C (85°F), whereas October's temperatures range from a minimum of 0°C (32°F) to a maximum of 27°C (80°F). Precipitation levels are also noteworthy, with October experiencing slightly more rain at 84 mm (3.3 in) compared to April's 68 mm (2.7 in), though both months see precipitation on about 9 days. Humidity levels rise in October to 81%, indicating a more humid feel compared to April's 72%. For a more detailed look at October weather patterns, check out Zagreb weather in October.

April and November present quite different weather patterns. April tends to be warmer, with average temperatures around 12°C (54°F) and highs reaching up to 29°C (85°F), while November sees cooler average temperatures of 7°C (46°F) with maximums of 22°C (71°F). Both months experience a notable amount of precipitation, but November is slightly wetter, receiving 89 mm (3.5 in) over 10 days compared to April's 68 mm (2.7 in) over 9 days. Additionally, humidity levels are higher in November at 87%, compared to 72% in April. For more specifics, you can check Zagreb weather in November.

April and December present distinct contrasts in weather conditions. In April, temperatures range from a chilly minimum of -6°C (21°F) to a comfortable maximum of 29°C (85°F), with an average of 12°C (54°F). The month sees about 68 mm (2.7 in) of precipitation over nine days, accompanied by a moderate humidity level of 72%. In contrast, December features a cooler average temperature of 3°C (38°F), with maximums reaching only 19°C (66°F). The precipitation increases to 86 mm (3.4 in) across ten days, and humidity rises to 88%, creating a much wetter and chillier environment. For more details, you can explore Zagreb weather in December.

Compare Zagreb's Climate with Cities Worldwide

Conclusion: What to Expect From April Weather in Zagreb

As April unfolds in Zagreb, the city experiences a refreshing transition from the chill of winter to the warmth of spring. Temperatures begin to rise, offering an average daily warmth that brings life back to the streets, while occasional cold snaps remind us that winter hasn't quite released its grip. Compared to the wetter months ahead, April sees its fair share of rain with a moderate 68 mm over about 9 days, creating a lush and vibrant atmosphere. The increased humidity at 72% might make it feel a bit warmer, but this also nourishes the blooming flowers and greenery that characterize this enchanting time of year. For an in-depth look at how Zagreb's climate evolves with the seasons, visit Zagreb Climate.