Last updated: August 21, 2025
April in Porto Alegre, Brazil offers a vibrant tapestry of weather, marked by maximum temperatures soaring up to 34°C (93°F), while the average settles comfortably around 21°C (71°F). As spring unfolds, the city experiences a refreshing contrast with lows dipping to 8°C (47°F). Rain is a recurring theme, with 73 mm (2.9 in) of precipitation spread over 8 days, resulting in an 82% humidity that wraps the city in a lush, tropical embrace. This dynamic weather pattern creates a lively atmosphere, perfect for exploring the cultural richness that Porto Alegre has to offer.
In April, Porto Alegre experiences a notable transition as temperatures begin to dip from the heat of summer. With minimums around 8°C (47°F), it’s a significant drop compared to the warmer months, ushering in a crisp feel to the air. The average temperature settles at a comfortable 21°C (71°F), providing a pleasant backdrop for outdoor activities, while the maximums peak at 34°C (93°F), still allowing for sunny, warm days. This month marks a blend of cooling evenings and mild days, highlighting a clear shift toward the cooler, more temperate climate that characterizes the approaching winter months. Overall, April serves as a gentle reminder of the seasonal change, offering a balance of warmth and refreshing coolness.
In April, Porto Alegre experiences a noticeable shift in precipitation, receiving 73 mm (2.9 in) over just 8 days. This not only marks a decrease compared to the wetter months preceding it, such as March with 109 mm (4.3 in), but also reflects the tail end of the region’s rainy season. As autumn settles in, April's milder rainfall signals a transition towards the drier months ahead, setting the stage for May's increase with 153 mm (6.0 in) as conditions fluctuate once more. This pattern showcases the city’s dynamic climate, where fluctuating precipitation contributes to the rich biodiversity and lush landscapes characteristic of the region.
April in Porto Alegre brings a noticeable rise in humidity, peaking at 82%. This increase follows a trend established in the preceding months of January through March, where humidity levels hovered around 77% to 79%. As the city transitions into the heart of autumn, the air grows increasingly moisture-laden, setting the stage for the more humid conditions of May, which averages 87% humidity. This gradual climb signifies a change in the local climate, indicative of the seasonal shift that leaves residents and visitors alike enveloped in the lush embrace of humidity as they enjoy the vibrant autumn scenery.
In April, Porto Alegre experiences a notable shift in its UV Index as it drops to 9, categorized as very high. This is a change from the extreme levels seen in the earlier summer months, when indices soared to 14, 13, and 12 from January to March, with a rapid burn time of just 10 minutes. As autumn sets in, residents and visitors can enjoy slightly longer exposure times of 15 minutes before risk of skin damage increases. However, it’s essential to stay vigilant as UV levels remain significant. As summer transitions to fall, this trend of decreasing UV intensity continues, culminating in a more moderate index in the following months. For those planning time outdoors, staying informed is crucial—check out the detailed insights at Porto Alegre UV Index.
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April in Porto Alegre experiences a delightful array of sunshine, with 271 hours of bright days illuminating the city. This slight dip from the previous months—January's striking 272 hours, February's 310 hours, and March's 312 hours—highlights a transition into the cooler months. As the warmth of summer fades, April maintains a respectable number of sun-soaked hours, setting the stage for May's drop to 230 hours. The consistent sun in the earlier months contrasts sharply with the shorter days that await in the winter months ahead, showcasing Porto Alegre's dynamic climate as it shifts through the seasons.
In Porto Alegre, April ushers in a promising 54% chance of sunny weather, making it one of the more favorable months for sunshine as the city transitions into autumn. The likelihood of sunny days holds steady with slight fluctuations around this time; in the preceding months, February and May show a higher propensity for sun at 59% and 55%, respectively. Interestingly, despite March dipping to 40%, April's sunshine returns to a more optimistic outlook, hinting at the nourishing warmth of autumn. As the year progresses, the trends indicate a notable decline in sunny days come winter, with June peaking at only 32%—a reminder that Porto Alegre's delightful sunshine is best enjoyed before the colder months set in.
In April, Porto Alegre experiences a notable shift in daylight duration, with 11 hours of sunlight marking a transition from the long, sun-drenched days of summer. This decline in daylight is a part of a broader seasonal pattern, as the days gradually shorten from the peak of 13 hours in January and February. Following April, daylight further decreases to just 10 hours in May and sustains this shorter span through June and July. However, as winter wanes, the city begins to regain light, with a gradual increase starting in August. Overall, the daylight trend throughout the year highlights the beautiful cyclical dance of the seasons, where Porto Alegre moves seamlessly from long summer days to the tranquility of shorter autumnal light.
As April breezes into Porto Alegre, the wind speeds remain relatively mild, averaging at 2.7 m/s (6 mph)—a steady continuation from March's gentle whispers. This trend signifies a slight uptick from the early year, but notably, it aligns with the patterns seen in May, suggesting a consistent yet soft atmospheric embrace as the seasons transition. While the winds may pick up in the latter months, with speeds notably increasing to 3.2 m/s (7 mph) in June and further into the spring, April offers a calm interlude that encourages leisurely strolls and outdoor gatherings. Here, the refreshingly cool air not only invites moments of relaxation but also foreshadows the invigorating gusts that are soon to come.
Weather in Porto Alegre varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Porto Alegre, focusing on differences in temperature, rainfall, humidity, and UV levels.
April presents a warmer climate than January, with average temperatures ranging from a minimum of 8°C (47°F) to a maximum of 34°C (93°F), all while experiencing 8 rainy days and a total precipitation of 73 mm (2.9 in) and a humidity level of 82%. In contrast, January boasts a milder minimum temperature of 15°C (58°F) and can climb to a scorching maximum of 39°C (103°F), but it also sees slightly more rainfall, with 93 mm (3.7 in) over 12 days and a lower humidity of 77%. For more specifics about the January climate, you can visit Porto Alegre weather in January.
April and February present contrasting weather patterns. In April, temperatures range from a minimum of 8°C (47°F) to a maximum of 34°C (93°F), with an average of 21°C (71°F). The month experiences 73 mm (2.9 in) of precipitation over 8 days, accompanied by a humidity level of 82%. In contrast, February is warmer, with minimum temperatures at 14°C (58°F) and maximums reaching 38°C (100°F), averaging 25°C (77°F). February also sees more rainfall, totaling 112 mm (4.4 in) across 11 days, while maintaining a slightly lower humidity at 79%. For more detailed information, check out Porto Alegre weather in February.
In comparing the weather of April and March, April tends to be slightly cooler, with average temperatures ranging from a minimum of 8°C (47°F) to a maximum of 34°C (93°F), compared to March's minimum of 13°C (56°F) and maximum of 38°C (100°F). Although April experiences lower humidity at 82%, it does see more precipitation with 73 mm (2.9 in) over 8 days, while March has more substantial rainfall at 109 mm (4.3 in) across 12 days. For more detailed information, you can check Porto Alegre weather in March.
In comparing the weather between April and May, April generally experiences warmer temperatures, with averages around 21°C (71°F) and maximums reaching up to 34°C (93°F), while May sees a cooler average of 17°C (63°F) and maximums of 32°C (90°F). April also has slightly less precipitation at 73 mm (2.9 in) over 8 days, compared to May's 153 mm (6.0 in) over 10 days, indicating wetter conditions in the latter month. Additionally, May tends to be a bit more humid, with levels at 87% compared to April's 82%. For more detailed information, visit Porto Alegre weather in May.
April and June weather in Porto Alegre exhibit notable differences. In April, temperatures range from a minimum of 8°C (47°F) to a maximum of 34°C (93°F), with an average temperature of 21°C (71°F). The month experiences about 73 mm (2.9 in) of precipitation over 8 days, coupled with a humidity level of 82%. In contrast, June presents cooler conditions, with temperatures dropping to a minimum of 3°C (38°F) and an average of 16°C (60°F), reaching a maximum of 31°C (88°F). Rainfall increases to 113 mm (4.4 in) across 9 days, and humidity slightly rises to 85%. These conditions underscore the transition from warmer to more temperate weather as the seasons change. For more details, check Porto Alegre weather in June.
April weather in Porto Alegre features a broader temperature range, with a minimum of 8°C (47°F), an average of 21°C (71°F), and a maximum of 34°C (93°F). This month also sees 73 mm (2.9 in) of precipitation spread over 8 days, combined with high humidity at 82%. In contrast, July experiences cooler temperatures, with a minimum of 2°C (35°F), an average of 14°C (58°F), and a maximum of 30°C (87°F). Despite having the same number of rainy days, July receives more precipitation at 122 mm (4.8 in), maintaining the same humidity level of 82%. For more detailed information, you can check Porto Alegre weather in July.
In comparing the weather of April and August, we notice some distinct contrasts. April boasts a warmer average temperature of 21°C (71°F), with a comfortable maximum of 34°C (93°F), while August presents a cooler average of 16°C (61°F) despite reaching a similar maximum of 34°C (94°F). Precipitation levels are quite similar, with April receiving 73 mm (2.9 in) and August recording 70 mm (2.8 in), both over eight days of rain. Humidity remains relatively high in both months, with April at 82% and August slightly lower at 81%. For a more detailed overview, check out Porto Alegre weather in August.
April and September present distinct yet captivating weather patterns. In April, temperatures typically range from a mild 8°C (47°F) at night to a warm average of 21°C (71°F) during the day, with the potential to reach a high of 34°C (93°F). The month experiences about 73 mm (2.9 in) of precipitation over 8 days, contributing to a humidity level of 82%. Conversely, September sees slightly cooler temperatures that range from a minimum of 7°C (45°F) to an average of 18°C (65°F), with extreme highs hitting 36°C (96°F). The month is notably wetter, with precipitation totaling 155 mm (6.1 in) across 12 days, resulting in a humidity level of 84%. For more insights on September weather, you can visit Porto Alegre weather in September.
April and October in Porto Alegre exhibit distinct weather patterns that reflect the transition of seasons. In April, temperatures range from a minimum of 8°C (47°F) to a maximum of 34°C (93°F), with an average of 21°C (71°F). The month sees around 73 mm (2.9 in) of precipitation over approximately 8 days, and humidity settles at 82%. In contrast, October experiences slightly milder temperatures, with a minimum of 9°C (49°F) and a maximum reaching 37°C (100°F), averaging 20°C (68°F). The rain is more significant in October, totaling 139 mm (5.5 in) and falling over about 13 days, while humidity increases to 85%. For more details on October weather, visit Porto Alegre weather in October.
April and November in Porto Alegre share a similar humidity level of 82%, creating a consistently muggy atmosphere. However, April features a broader temperature range, with minimums dropping to 8°C (47°F) and maximums reaching up to 34°C (93°F), while November sees slightly warmer conditions with minimums of 12°C (53°F) and maximums climbing to 37°C (99°F). Precipitation also increases in November, with 112 mm (4.4 in) over approximately 10 days compared to April's 73 mm (2.9 in) over 8 days. For a more detailed look at November weather specifics, you can check Porto Alegre weather in November.
April and December present contrasting weather patterns despite their proximity in the calendar year. In April, temperatures range from a minimum of 8°C (47°F) to a maximum of 34°C (93°F), with an average of 21°C (71°F). The month experiences around 73 mm (2.9 in) of precipitation over 8 days, accompanied by a relatively high humidity of 82%. In contrast, December boasts warmer temperatures, with a minimum of 13°C (55°F) and soaring highs up to 38°C (101°F), averaging 24°C (76°F). Precipitation remains slightly higher at 80 mm (3.2 in) over the same number of rainy days, while humidity also increases to 84%. The differences in temperature and precipitation highlight the transitional shift from the coolness of autumn to the heat of summer in this region. For more insight into how December weather unfolds in this area, you can check Porto Alegre weather in December.
April in Porto Alegre brings a delightful shift in weather as the summer heat begins to wane. With warmer days gradually transitioning into cooler evenings, this month offers a pleasant average temperature that invites outdoor activities while still maintaining a touch of summer. The humidity remains high, wrapping the city in a moist embrace, but the relatively low precipitation days allow for ample sunshine. Whether you’re exploring the vibrant local culture or enjoying the lush landscapes, April's weather presents a balanced mix that sets it apart from the more extreme conditions of the adjacent months. For a deeper understanding of the city's climate throughout the year, explore Porto Alegre Climate.