August Weather in Zagreb, Croatia

Last updated: March 17, 2025

August in Zagreb, Croatia presents a warm and inviting atmosphere, with maximum temperatures soaring up to an impressive 39°C (103°F). The average temperature lingers comfortably around 23°C (74°F), creating perfect conditions for outdoor activities and exploration. However, the month also experiences cooler nights, with minimum temperatures dipping to 9°C (49°F). While the city basks in the summer sun, it doesn't shy away from occasional showers, registering a total precipitation amount of 74 mm (2.9 in) over about 10 days. The humidity level stands at a moderate 51%, making for a pleasant yet dynamic summer experience in the heart of Croatia.

August Temperature in Zagreb

In August, Zagreb experiences its warmest temperatures of the year, with average highs reaching a sizzling 39°C (103°F). The minimum temperature rarely drops below 9°C (49°F), providing a comfortable evening chill that contrasts sharply with the daytime heat. Overall, August strikes a perfect balance between the intense summer warmth and slightly cooler nights, making it a popular time for outdoor activities and festivals. Visitors can expect long, sun-soaked days perfect for exploring the city’s vibrant streets and beautiful parks, as the summer heat peaks before gradually giving way to the pleasant temperatures of fall.

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

The chart illustrates August 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.

August Precipitation in Zagreb

In August, Zagreb experiences a notable dip in precipitation, with 74 mm (2.9 in) of rain falling over 10 days. This marks a moderate decrease compared to the wetter months preceding it, particularly May, which averages 120 mm (4.7 in) from 17 rainy days. As summer begins to wane, the rainfall in August is less frequent but still substantial enough to maintain lush surroundings. This pattern indicates a transition from the high summer humidity and occasional storms of earlier months towards the onset of autumn, setting the stage for the wetter September, which typically sees a rebound in precipitation levels.

August Precipitation Trends in Zagreb

The chart displays monthly precipitation patterns in Zagreb, with values for each month alongside August's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec3966526812096887498849086
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Zagreb

In August, Zagreb experiences a refreshing drop in humidity, reaching a comfortable 51%. This marks a significant decline from the previous months, as summer ends and the city welcomes the cooler touch of autumn. The trend reveals a gradual decrease in humidity from January's heavy 89% to July's 64%, culminating in August's crisp conditions. This mid-summer respite makes August a favorable time for outdoor activities, allowing both locals and visitors to enjoy the vibrant beauty of the city's parks and historical sites. As the humidity begins to rise again in September, the lingering charm of summer can still be felt, inviting all to savor the serene late-summer days in Zagreb.

August Average Humidity in Zagreb

This chart illustrates the average monthly humidity levels in Zagreb, with August's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how August's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec89%83%75%72%70%69%64%51%62%81%87%88%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Zagreb

In August, Zagreb experiences a UV Index of 8, categorizing the exposure as very high. This level indicates that sun protection is essential, with a noticeable burn time of just 15 minutes for fair-skinned individuals. Following a peak in summer months, the UV levels begin to taper off in September, falling to a 6, which denotes high exposure. This trend reflects the increasing intensity of the sun from the start of the year, with January's low index of 2 progressing through gradual rises in the spring and reaching a summer peak. As summer fades, skin awareness remains crucial for residents and visitors alike in Zagreb during this vibrant month. For detailed UV forecasts, visit Zagreb UV Index.

Maximum UV Index Levels in Zagreb for August

The chart shows the monthly maximum UV Index (UVI) for Zagreb in August, 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 August 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.

August Sunshine in Zagreb

In August, Zagreb basks in 391 hours of glorious sunshine, making it one of the sunniest months of the year. This follows a remarkable streak from June through July, where sunshine peaked at 426 hours, showcasing the vibrant summer energy the city has to offer. While August experiences a slight dip from these peak summer days, it still outshines both the earlier months of the year and the approaching autumn, with September's tally dropping to 326 hours. The overall trend highlights a gradual increase in sunlight as spring shifts into summer, culminating in this sun-soaked August, inviting residents and tourists alike to revel in the city's outdoor charm before the shorter days of fall arrive.

Monthly Sunshine Duration in Zagreb: August Highlighted

The August sunshine duration represents the total number of hours Zagreb experiences direct sunlight during the month of August, excluding cloudy or obstructed periods. This chart compares the sunshine duration of August with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec162h226h307h335h371h406h426h391h326h288h191h204h
Data source: Zagreb August Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Zagreb During August

In August, the likelihood of sunny weather in Zagreb, Croatia stands at a solid 50%, aligning with the average sunshine of the summer months. This consistency reflects a peak in sunny conditions around mid-year, after an increase from just 28% in the depths of winter. Following a brief dip in spring, the chances of basking in the sun rise steadily through the summer, with June and July enjoying similar prospects. After August, a slight uptick to 52% in September indicates that the summer sun lingers a bit longer before transitioning into the cooler months. This trend highlights August as a promising time for those seeking warm, sunny days in Zagreb, perfectly suited for outdoor exploration and relaxation.

Percentage of Sunny Days in August in Zagreb

The chart illustrates the percentage of sunny days in Zagreb throughout the year, with August 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 August chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Zagreb in August

In August, Zagreb experiences a delightful 14 hours of daylight, marking a transition as summer begins to wane. This month follows the peak brightness of June and July, which both boast 15 hours of sun. As daylight gradually decreases moving into September with just 12 hours, August offers a final taste of summer's warmth, where longer evenings invite outdoor gatherings and vibrant sunsets. The gradual shift in daylight highlights the cyclical nature of the seasons, reminding us that while the days grow shorter, the charm of summer lingers just a bit longer in this beautiful Croatian city.

Average Daylight Hours in Zagreb for August

The chart illustrates the variation in daylight duration in Zagreb throughout the year, with August 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.

August Winds in Zagreb

As summer wanes in Zagreb, Croatia, the August winds settle into a gentle rhythm, averaging a mild 1.7 m/s (4 mph). This slight dip in wind speed compared to the lively breezes of spring and early summer reflects the city's transition towards autumn. Throughout the warmer months, winds have remained relatively light, peaking modestly in April at 2.4 m/s (5 mph). As the heat of August lingers, the air feels softer, encouraging leisurely strolls along the scenic streets. Following August, the wind speeds gradually increase again as the city shifts gears into fall, hinting at the delicate dance of seasons that characterize this vibrant Croatian capital.

Average August Wind Speed in Zagreb

The chart displays monthly wind speed patterns in Zagreb, with values for each month shown alongside August's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how August's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.22.22.32.42.31.92.01.7 m/s1.82.11.81.8
Data source: Zagreb August wind data, generated using information from the Copernicus Climate Change Service.

How August 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 August'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.

August and January present starkly contrasting weather patterns. In August, temperatures range significantly from a cool 9°C (49°F) to a scorching maximum of 39°C (103°F), with an average of 23°C (74°F) and a moderate humidity level of 51%. Precipitation is relatively plentiful, with 74 mm (2.9 in) over about 10 days, making it a warm and often humid month. In contrast, January is characterized by chilling cold, with temperatures plummeting to a minimum of -12°C (11°F) and an average of just 1°C (34°F). The maximum reaches a mild 16°C (62°F), but the high humidity of 89% can make it feel even colder. January experiences less precipitation, totaling 39 mm (1.5 in) across about 8 days, contributing to its wintry feel. For a more detailed look at January weather, you can visit Zagreb weather in January.

The weather in August and February showcases stark contrasts. August brings warm temperatures, with averages around 23°C (74°F) and highs reaching up to 39°C (103°F), creating a notable dry heat with a humidity level of 51%. In contrast, February experiences much cooler weather, with average temperatures dropping to a mere 4°C (40°F) and lows plummeting to -10°C (14°F). This winter month also has a higher humidity level at 83% and slightly less precipitation, averaging 66 mm (2.6 in) over 9 days. For more detailed insights on February conditions, you can refer to Zagreb weather in February.

When comparing the weather in August and March, the differences are striking. August boasts a much warmer climate, with temperatures ranging from a cool 9°C (49°F) to a scorching maximum of 39°C (103°F). In contrast, March experiences significantly cooler temperatures, with lows plunging to -15°C (6°F) and a maximum that only reaches 23°C (74°F). Additionally, August sees an average of 74 mm (2.9 in) of precipitation over approximately 10 days, while March is slightly drier with 52 mm (2.1 in) spread across 8 days. Humidity levels also vary, with August maintaining a comfortable 51%, compared to the higher 75% in March. For more detailed information, check out Zagreb weather in March.

When comparing the weather in August and April, significant differences become evident. August boasts much warmer temperatures, with a minimum of 9°C (49°F) and an average of 23°C (74°F), peaking at 39°C (103°F). In contrast, April sees cooler conditions, with temperatures ranging from a minimum of -6°C (21°F) to a maximum of 29°C (85°F) and an average of 12°C (54°F). Additionally, while both months experience precipitation, April has a slightly lower amount at 68 mm (2.7 in) over 9 days, compared to August's 74 mm (2.9 in) over 10 days. The humidity is also more pronounced in April at 72%, whereas August has a humidity level of 51%. For further details on April's weather, you can visit Zagreb weather in April.

When comparing the weather in August and May, notable differences arise in temperature and precipitation patterns. August typically enjoys warmer conditions, with average temperatures around 23°C (74°F) and highs reaching up to 39°C (103°F). In contrast, May experiences cooler temperatures, averaging 16°C (62°F) and peaking at 31°C (89°F). Precipitation is more frequent in May, with about 120 mm (4.7 in) over 17 days, compared to August, which sees 74 mm (2.9 in) across 10 days. The humidity levels also differ, with May being noticeably more humid at 70% compared to August’s 51%. For more detailed information, explore Zagreb weather in May.

When comparing the weather in August to June, there are some notable differences. August generally features slightly higher temperatures, with an average of 23°C (74°F) compared to June's average of 22°C (72°F). However, both months experience warm conditions, with August reaching a maximum of 39°C (103°F) and June peaking at 37°C (99°F).

In terms of precipitation, June sees more rain with 96 mm (3.8 in) over 12 days, whereas August has a total of 74 mm (2.9 in) over 10 days, making it somewhat drier. Additionally, humidity levels are typically higher in June at 69%, compared to 51% in August. For more detailed information about June weather, visit Zagreb weather in June.

When comparing the weather in August and July, both months exhibit similar average temperatures, hovering around 23°C (74°F). However, August experiences a slightly broader temperature range, with a minimum of 9°C (49°F) and a maximum of 39°C (103°F), compared to July's range of 10°C (50°F) to 36°C (97°F). Precipitation in August is lower at 74 mm (2.9 in) over 10 days, while July sees more rainfall at 88 mm (3.5 in) across 11 days. Additionally, July has higher humidity levels at 64%, compared to August's 51%. For a more detailed look at July's climate, you can visit Zagreb weather in July.

August typically offers warmer temperatures, with an average high of 39°C (103°F) compared to September's maximum of 34°C (93°F). However, as summer transitions into autumn, September sees a notable drop in average temperatures to 18°C (64°F), making it considerably cooler than August's average of 23°C (74°F). Additionally, September experiences increased precipitation, totaling 98 mm (3.9 in) over 10 days, compared to August's 74 mm (2.9 in) over the same number of days. The humidity also rises in September to 62%, compared to 51% in August, contributing to a slightly more uncomfortable feel. For more information, check Zagreb weather in September.

August and October in Zagreb present a notable contrast in weather patterns. August boasts warmer temperatures, with average highs reaching up to 39°C (103°F) and a pleasant average of 23°C (74°F), resulting in lower humidity at 51%. However, it also experiences 74 mm (2.9 in) of precipitation over about 10 days. In contrast, October sees a significant drop in temperatures, with an average high of 27°C (80°F) and a colder average of 12°C (55°F), alongside higher humidity levels at 81%. Interestingly, October also records slightly more precipitation at 84 mm (3.3 in) over 9 days, creating a wetter atmosphere as autumn settles in. For more detailed insights on October weather, you can visit Zagreb weather in October.

August and November present contrasting weather patterns. In August, temperatures can soar with a minimum of 9°C (49°F) and a maximum reaching 39°C (103°F), creating a warm and often humid atmosphere with an average temperature of 23°C (74°F). The month sees around 74 mm (2.9 in) of precipitation over 10 days, with humidity levels at 51%, providing a more balanced feel. In contrast, November brings a significant drop in temperatures, with minimums plummeting to -5°C (24°F) and an average of only 7°C (46°F). The maximum temperature of 22°C (71°F) offers a mild respite, but the month is marked by higher precipitation at 89 mm (3.5 in), also over 10 days, and a notable increase in humidity at 87%. For an in-depth look at November weather, check out Zagreb weather in November.

When comparing the weather in August and December, the differences are striking. August features a wide temperature range, with minimums around 9°C (49°F) and maximums soaring to a scorching 39°C (103°F), while the average temperature sits at a comfortable 23°C (74°F). In contrast, December brings much colder conditions, with minimums dropping to -6°C (21°F) and maximums peaking at a mild 19°C (66°F), leading to an average temperature of just 3°C (38°F). Additionally, December experiences higher humidity at 88%, creating a stark contrast to the drier August, which has a humidity level of 51%. Precipitation is also slightly higher in December at 86 mm (3.4 in) despite both months having rainfall on about 10 days. For a closer look at December's weather specifics, visit Zagreb weather in December.

Compare Zagreb's Climate with Cities Worldwide

Conclusion: What to Expect From August Weather in Zagreb

August in Zagreb brings a delightful blend of summer warmth and occasional rain, making it a unique month in the city’s climate profile. With temperatures soaring to maximum highs reaching up to 39°C (103°F), it stands out as one of the hottest months of the year. In contrast to the pleasant average temperature of 23°C (74°F), the nights cool down to about 9°C (49°F), providing a refreshing break from the day's heat. While humidity levels hover around 51%, occasional rain, contributing to 74 mm (2.9 in) of precipitation over 10 days, helps maintain the vibrancy of the lush scenery. This combination of warm days and cooler nights, along with sporadic showers, distinguishes August from other months, inviting visitors to embrace both the heat and the charm of Zagreb. For more insights on the city's overall weather patterns, explore Zagreb Climate.