April Weather in Trieste, Italy

Last updated: March 24, 2025

In April, Trieste, Italy experiences a diverse range of weather conditions. Maximum temperatures can reach a pleasant 24°C (75°F), providing a taste of spring warmth, while the average temperature hovers around 12°C (54°F). The city's charm can also be felt during cooler moments, with temperatures dipping to a minimum of -1°C (30°F). April brings a total precipitation of 117 mm (4.6 in) across 10 rainy days, contributing to the region's lush landscapes. With an average humidity level of 73%, the air carries a refreshing quality, making it a compelling time to explore Trieste's scenic beauty and rich history.

April Temperature in Trieste

In April, Trieste, Italy, experiences a delightful transformation as temperatures gradually rise, marking the arrival of spring. With a minimum temperature reaching -1°C (30°F) and an average of 12°C (54°F), the days become noticeably warmer. The maximum temperature can soar to a pleasant 24°C (75°F), inviting locals and visitors alike to enjoy outdoor activities and the blossoming scenery. This month sees a sharper contrast to the chill of winter, echoing a trend of increasing warmth that continues into May. As the city shakes off the remnants of cold, April offers a refreshing glimpse of the sunny days ahead, making it an ideal time to explore Trieste's stunning coastal views and historical sites.

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

The chart illustrates April temperature patterns in Trieste, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec394246536170737466574942
Data source: Temperature data for Trieste generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

April Precipitation in Trieste

In April, Trieste experiences a substantial precipitation total of 117 mm (4.6 in), making it one of the wetter months of the year. With rainfall occurring over 10 days, the city often sees springtime showers that nourish the blossoming flora and invigorate the landscape. This uptick in rainfall follows the stark contrasts of February's heavy 128 mm (5.0 in), showcasing a trend where early spring is characterized by significant moisture, although slightly less than the 175 mm (6.9 in) expected in the following month of May. As the rainy season progresses, the overall trend indicates a gradual increase in precipitation, peaking in the vibrant month of September. In essence, April serves as a pivotal gateway into the lush and richly watered months that follow, making it a crucial period for both nature and the local community.

April Precipitation Trends in Trieste

The chart displays monthly precipitation patterns in Trieste, 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.
JanFebMarAprMayJunJulAugSepOctNovDec66128871171751059389183126199166
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Trieste

As spring unfolds in Trieste, Italy, April brings a steady humidity level of 73%, mirroring the slight drop seen in March. This continuity reflects a gradual shift from the winter months, where humidity peaks at a notable 88% in January. As the city transitions into warmer months, humidity continues to decline, with May and June forecasted at 70% and 69%, respectively. Interestingly, April's consistent moisture levels set the stage for a refreshing yet comfortable environment, paving the way for the drier summer ahead. This evolving pattern highlights the city's seasonal rhythm, where the rich maritime influences are felt alongside milder temperatures, making Trieste an inviting destination in springtime.

April Average Humidity in Trieste

This chart illustrates the average monthly humidity levels in Trieste, 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.
JanFebMarAprMayJunJulAugSepOctNovDec88%82%73%73%70%69%63%51%64%83%89%88%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Trieste

As April unfolds in Trieste, Italy, the UV Index climbs to 6, marking a transition into a period of high exposure that requires vigilance against sunburn, with a burn time of just 25 minutes. This increase reflects a consistent upward trend as the months progress; starting from a low of 2 in January, the UV Index escalates sharply, signaling the onset of spring and heralding the sun's growing intensity. Come May, the UV Index reaches 8, entering the very high category, further emphasizing the need for sun protection. With these escalating values, it’s essential to stay informed and protected. For more details on sun safety throughout the year, check out the Trieste UV Index.

Maximum UV Index Levels in Trieste for April

The chart shows the monthly maximum UV Index (UVI) for Trieste 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.
JanFebMarAprMayJunJulAugSepOctNovDec235689987532
Data source: Trieste 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 Trieste

In April, Trieste basks in an impressive 344 hours of sunshine, marking a delightful peak that heralds the vibrant spring. As the days grow longer, residents and visitors alike revel in the transition from the cooler months of January and February, which garnered only 182 and 223 hours respectively. The trend continues upward, with March providing a promising 315 hours that sets the stage for April’s sunny embrace. Following winter's retreat, sunshine hours steadily increase, peaking in the summer months, creating a delightful progression that encourages outdoor activities and exploration of this stunning coastal city. As May rolls in with 372 hours of sunshine, Trieste emerges as a beacon of light, inviting all to enjoy its rich history and spectacular landscapes in the warming rays.

Monthly Sunshine Duration in Trieste: April Highlighted

The April sunshine duration represents the total number of hours Trieste 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.
JanFebMarAprMayJunJulAugSepOctNovDec182h223h315h344h372h417h430h397h326h293h229h207h
Data source: Trieste April Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Trieste During April

In Trieste, Italy, April brings a 41% chance of sunny weather, which marks a slight dip from the previous month’s 61% but aligns closely with the sunnier trends that emerge in spring. This transitional period sees fluctuating possibilities as winter gives way to warmer days, with sunny conditions increasingly common. While April's chances aren't as high as March’s peak, they resonate with the sunshine potential that begins to blossom in the following months, ultimately leading to the more robust sun exposure seen in late spring and summer. Keep your spirits high; the sun will soon shine more frequently as you step into the vibrant heart of the year!

Percentage of Sunny Days in April in Trieste

The chart illustrates the percentage of sunny days in Trieste 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 Trieste experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec29%40%61%41%37%53%49%55%56%47%36%37%
Data source: Trieste April chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Trieste in April

As spring unfolds in Trieste, Italy, April brings a delightful increase in daylight duration, stretching to 13 hours. This marks a significant leap from the 11 hours seen in March, heralding the longer days that characterize the approach of summer. The trend is clear: as the year progresses, daylight hours steadily ascend from the winter's 9 hours in January to a peak of 15 hours in June and July. Following this mid-year zenith, daylight gradually recedes again, dipping back to 10 hours in October. Thus, April not only reflects the vibrant rebirth of spring but also sets the stage for the sun-drenched days of summer just around the corner.

Average Daylight Hours in Trieste for April

The chart illustrates the variation in daylight duration in Trieste throughout the year, with April highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 7m10h 22m11h 56m13h 33m14h 55m15h 38m15h 15m14h 2m12h 29m10h 53m9h 28m8h 43m
Data source: Trieste daylight hours, calculated by summing the hours between sunrise and sunset for each day.

April Winds in Trieste

As April arrives in Trieste, the winds begin to stir, showcasing an average speed of 2.9 m/s (6 mph). This slight uptick from the previous months marks a transition from the calmer breezes of early spring, hinting at the vibrant energy of the season ahead. While still modest compared to the brisk gusts of later months, April's winds provide a refreshing backdrop for the blossoming scenery. With May on the horizon bringing a similar average wind speed, it's clear that Trieste's coastal charm is perfectly complemented by a gentle, invigorating breeze, setting the stage for the sun-drenched days to follow. The gradual increase in wind speed as spring progresses illustrates the city's dynamic atmosphere, inviting both locals and visitors to enjoy the outdoors.

Average April Wind Speed in Trieste

The chart displays monthly wind speed patterns in Trieste, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.02.82.62.9 m/s3.02.22.42.82.53.73.92.4
Data source: Trieste April wind data, generated using information from the Copernicus Climate Change Service.

How April Weather in Trieste Compares to Other Months

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

April weather is generally much milder and more varied compared to January. In April, temperatures range from a minimum of -1°C (30°F) to a maximum of 24°C (75°F), with an average of 12°C (54°F). This month experiences about 117 mm (4.6 in) of precipitation over approximately 10 days, accompanied by a humidity level of 73%. In contrast, January tends to be colder, with temperatures dipping down to -8°C (17°F) at night and reaching a daytime maximum of only 12°C (54°F), averaging 4°C (39°F). The precipitation in January is lower, at 66 mm (2.6 in) over about 7 days, but the humidity is significantly higher at 88%. For more details, you can check Trieste weather in January.

April generally brings milder and more pleasant weather compared to February. While February has a chilly minimum temperature of -7°C (20°F) and an average of 6°C (43°F), April sees a significant rise with temperatures starting at a minimum of -1°C (30°F) and averaging 12°C (54°F). The maximum temperatures in April can reach up to 24°C (75°F), offering much more warmth compared to February's peak of 19°C (66°F). Although both months see precipitation on about 10 days, April's total rainfall is slightly lower at 117 mm (4.6 in) compared to February's 128 mm (5.0 in). Additionally, humidity levels are higher in February at 82% versus 73% in April, contributing to a sense of chilliness in the earlier month. For a more detailed look at February weather, visit Trieste weather in February.

April's weather shows a significant warming trend compared to March, with minimum temperatures rising from -10°C (14°F) in March to -1°C (30°F) in April. The average temperature also increases from 8°C (46°F) to 12°C (54°F), while maximum temperatures can reach up to 24°C (75°F) in April, compared to 20°C (69°F) in March. In terms of precipitation, April sees an increase to 117 mm (4.6 in), though both months experience rainfall over the same number of days (10 days). Despite the similar humidity levels at 73%, the overall feel of April is warmer and more spring-like than the cooler, lingering conditions of March. For more details on March weather, you can check Trieste weather in March.

April and May present a noticeable shift in weather conditions. In April, temperatures range from a chilly minimum of -1°C (30°F) to a mild maximum of 24°C (75°F), with an average of 12°C (54°F). The month experiences about 117 mm (4.6 in) of precipitation over 10 days, contributing to a humidity level of 73%. In contrast, May brings warmer temperatures, with a minimum of 6°C (44°F) and a maximum of 26°C (79°F), leading to a comfortable average of 16°C (61°F). However, it also sees increased rainfall at 175 mm (6.9 in) across 19 days, while humidity slightly decreases to 70%. For more detailed insights, check out Trieste weather in May.

April and June present contrasting weather patterns. In April, temperatures range from a chilly minimum of -1°C (30°F) to a comfortable maximum of 24°C (75°F), with an average temperature of 12°C (54°F). The month sees significant precipitation, totaling 117 mm (4.6 in) over about 10 days, and humidity levels average around 73%. In contrast, June experiences much warmer conditions, with minimum temperatures starting at 11°C (52°F) and maximums reaching 33°C (91°F), resulting in an average of 21°C (71°F). Precipitation decreases slightly to 105 mm (4.1 in) over just 9 days, and humidity dips to a more comfortable 69%. For more detailed insights into June weather, check Trieste weather in June.

April and July exhibit contrasting weather patterns. In April, temperatures range from a chilly minimum of -1°C (30°F) to a comfortable maximum of 24°C (75°F), with an average of 12°C (54°F). This month is also marked by higher precipitation, totaling 117 mm (4.6 in) over about 10 days, accompanied by a humidity level of 73%. In contrast, July offers a warm climate with temperatures ranging from a minimum of 15°C (59°F) to a peak of 32°C (91°F), averaging 23°C (73°F). The month experiences less rainfall, with 93 mm (3.6 in) spread over approximately 13 days, along with a lower humidity level of 63%. For more detailed information, you can view Trieste weather in July.

April and August present quite contrasting weather patterns. In April, temperatures typically range from a chilly minimum of -1°C (30°F) to a pleasant maximum of 24°C (75°F), with an average of 12°C (54°F). The month is also characterized by relatively high precipitation, totaling 117 mm (4.6 in) over about 10 days, paired with a humidity level of 73%. In contrast, August enjoys much warmer weather, with temperatures ranging from a minimum of 13°C (56°F) to a high of 34°C (93°F), and an average temperature of 23°C (74°F). Precipitation in August is lower, at 89 mm (3.5 in) across the same number of days, with humidity dropping to 51%. For more detailed information, you can visit Trieste weather in August.

April and September present distinct weather patterns, each with its own unique characteristics. In April, temperatures range from a chilly minimum of -1°C (30°F) to a comfortable maximum of 24°C (75°F), averaging around 12°C (54°F). However, this month also sees considerable precipitation, with about 117 mm (4.6 in) spread across approximately 10 days and a humidity level of 73%.

In contrast, September offers a warmer climate, with minimum temperatures of 8°C (46°F) and maximums reaching up to 30°C (87°F), averaging 19°C (66°F). This month experiences even higher precipitation, totaling 183 mm (7.2 in) over 12 days, yet has a slightly lower humidity level of 64%. These differences highlight how April is marked by cool, wet weather while September leans towards warmth and occasional rain. For a more detailed look at September weather in a specific location, check out Trieste weather in September.

April and October present distinct weather patterns, despite both months experiencing around ten days of precipitation. In April, temperatures range from a chilly minimum of -1°C (30°F) to a warm maximum of 24°C (75°F), leading to an average of 12°C (54°F). In contrast, October's temperatures are more moderate, with a minimum of 6°C (43°F), an average of 14°C (58°F), and a maximum of 22°C (72°F). Additionally, October tends to be a bit wetter, with total precipitation slightly higher at 126 mm (5.0 in) compared to April's 117 mm (4.6 in). The humidity also increases in October, rising to 83% from April's 73%. For a deeper look at October's climatic conditions, you can explore Trieste weather in October.

April and November present contrasting weather patterns, marked by differences in temperature, precipitation, and humidity. In April, temperatures range from a chilly minimum of -1°C (30°F) to a pleasant maximum of 24°C (75°F), with an average of 12°C (54°F). The month sees around 117 mm (4.6 in) of rain over approximately 10 days, and the humidity sits at a moderate 73%. In contrast, November experiences cooler temperatures, with a minimum of 0°C (33°F), an average of 10°C (50°F), and a maximum of 18°C (65°F). Precipitation increases significantly to 199 mm (7.8 in) over 13 days, accompanied by higher humidity levels at 89%. For more detailed insights into the weather during November, visit Trieste weather in November.

April and December present contrasting weather conditions. In April, temperatures range from a chilly -1°C (30°F) to a pleasant 24°C (75°F), with an average of 12°C (54°F). The month sees a total precipitation of 117 mm (4.6 in) over approximately 10 days and a humidity level of 73%. In contrast, December experiences colder temperatures, with a minimum of -2°C (29°F) and a maximum of 14°C (58°F), averaging around 6°C (42°F). Precipitation in December is higher, totaling 166 mm (6.5 in) over 12 days, coupled with increased humidity at 88%. For more detailed insights into December's weather, you can check Trieste weather in December.

Compare Trieste's Climate with Cities Worldwide

Conclusion: What to Expect From April Weather in Trieste

As April descends upon Trieste, the city experiences a delightful transition from the chill of winter to the warmth of spring. With average temperatures rising and an invigorating atmosphere, this month typically brings more comfortable weather compared to the frostier months preceding it. However, don’t forget your umbrella, as April tends to be one of the wetter months, marking a shift in the skyline with frequent showers that nurture the blooming scenery. The humidity adds a touch of freshness, setting the stage for an enchanting spring ambiance. For a deeper dive into what to expect throughout the year, visit Trieste Climate.