Last updated: August 28, 2025
In August, Montevideo experiences a temperate climate characterized by a maximum temperature of 19°C (67°F) and an average of 12°C (54°F), with a minimum dipping to 6°C (43°F). This month is marked by an average precipitation of 81 mm (3.2 in) spread over about 8 rainy days, contributing to the city’s atmospheric humidity of 72%. Visitors can expect cool and somewhat damp conditions, perfect for enjoying Montevideo's vibrant culture and cozy indoor activities while wrapped in a light jacket.
In Montevideo, Uruguay, August brings a notable chill as winter begins to wane, with temperatures ranging from a brisk 6°C (43°F) to a mild 19°C (67°F). The average temperature hovers around 12°C (54°F), providing a refreshing contrast to the warmer months preceding it. As the region transitions from the coldest part of the year—where July's averages dip to their lowest—August marks a gradual shift, hinting at the warmer, vibrant spring days ahead. While the air remains crisp, this month serves as a wonderful bridge, inviting residents and visitors alike to enjoy the city's charm before summer's arrival.
In August, Montevideo experiences a moderate precipitation level, with 81 mm (or 3.2 in) of rain falling over approximately 8 days. This marks a slight decrease from the previous month’s peak during July, which recorded the highest rainfall of the year at 122 mm (4.8 in). As the winter season begins to transition towards spring, the consistent rainfall in these winter months, particularly from May to July, helps to prepare the region for the warmer months ahead. With September seeing a similar trend of 91 mm (3.6 in), it is clear that August serves as a bridge between the wetter winter and the drier spring, maintaining a balance in the region's climate.
In August, Montevideo experiences a humidity level of 72%, consistent with the generally moderate conditions seen throughout the winter months. The humidity in August is notably lower than the peak levels in April and May, which reach 79% and 82% respectively. Following the trend from July, where humidity drops to 72%, August marks a slight plateau as the region transitions towards spring. Overall, the gradual decline in humidity from the early winter months starkly contrasts the upward climb observed from January through May, giving residents a brief respite before the humidity begins to rise again in September, which returns to 76%. This fluctuation highlights Montevideo's dynamic climate, where the change in humidity reflects the shifting seasons.
In August, Montevideo experiences a UV Index of 6, categorized as high, which signifies a moderate risk of harm from unprotected sun exposure. The burn time stretches to about 25 minutes, offering a brief window for outdoor activities before you need to seek shade or apply sunscreen. As winter transitions to spring, UV levels gradually rise from the lower values seen in the winter months, reflecting a seasonal shift towards higher sun intensity. Notably, this uptick continues into September, where the UV Index climbs to 8, marking a return to very high exposure levels. To stay informed and protect your skin effectively, check out the Montevideo UV Index throughout the year.
UV Risk Categories
As the winter chill recedes in August, Montevideo begins to warm up, boasting approximately 247 hours of sunshine. This marks a noticeable increase from the grayness of winter months like June and July, which see only 211 hours each. With the sunny trend on the rise, August acts as a delightful precursor to the vibrant spring ahead, as the city gradually emerges from its cooler season. Following August, the sunshine continues to flourish, peaking with 385 hours in December, revealing a seasonal pattern that invites both locals and visitors to embrace the warmth and beauty of Montevideo's sunlit days.
In Montevideo, Uruguay, August brings a moderate 54% chance of sunny weather, hinting at a blend of sunshine and clouds as winter transitions to spring. While this percentage is slightly lower than the summer months of January and February, it aligns closely with the sunny disposition of July, which stands at 55%. Interestingly, August marks a peak in sunny potential compared to the cooler months that follow, with September dipping to just 38%. So, while August may not boast the highest sunshine odds, it certainly offers a delightful escape from the colder days ahead, making it a pleasant time for outdoor activities as the landscape begins to awaken.
In August, Montevideo experiences a modest 10 hours of daylight, marking a transition as winter begins to wane. This month follows the shorter days of July, which also offered 10 hours of sunlight, suggesting a stable but brief pause in the gradual increase of daylight. As spring approaches, the trend becomes apparent: daylight starts to lengthen again in September with 11 hours, leading to an invigorating climb toward the vibrant 14 hours of sunlight seen in January and December. The rhythmic shift in daylight throughout the year highlights the dynamic beauty of Montevideo’s seasonal changes, inviting residents and visitors alike to savor the balance of light and shadow.
In August, Montevideo experiences a notable dip in wind speed, averaging 4.8 m/s (11 mph), which is the lowest for the year. This gentle breeze offers a serene atmosphere, contrasting sharply with the bustling winds of November, where speeds climb to 7.1 m/s (16 mph), making it one of the windiest months. Following a trend seen from late spring to early autumn, winds generally pick up in the subsequent months, with September bringing a brisk 6.9 m/s (15 mph). From May through July, wind velocities consistently hover around 6.6 to 6.7 m/s (15 mph), creating an invigorating climate that balances energy and ease. As the seasons transition, the brief calm of August serves as a reminder of the dynamic weather patterns that shape the city's coastal charm.
Weather in Montevideo varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Montevideo, focusing on differences in temperature, rainfall, humidity, and UV levels.
In August, the weather is considerably cooler with average temperatures ranging from a minimum of 6°C (43°F) to a maximum of 19°C (67°F). In contrast, January offers a much warmer climate, with average temperatures between 17°C (62°F) and 31°C (87°F). While August sees more frequent precipitation, totaling 81 mm (3.2 in) over 8 days, January has less at 61 mm (2.4 in) over just 5 days. Additionally, the humidity in August is higher at 72%, compared to January's 63%. For a more detailed look at January's climate, you can visit Montevideo weather in January.
In comparing the weather between August and February, notable differences emerge in both temperature and precipitation. August experiences cooler temperatures, with a minimum of 6°C (43°F) and an average of 12°C (54°F), peaking at 19°C (67°F). In contrast, February boasts significantly warmer temperatures, ranging from a minimum of 16°C (62°F) to an average of 22°C (73°F) and a maximum of 29°C (84°F). Precipitation levels are fairly similar, with August receiving 81 mm (3.2 in) over 8 days and February slightly higher at 84 mm (3.3 in) over 9 days. Interestingly, February's humidity is marginally lower at 69% compared to August's 72%. For a closer look at February's weather specifics, you can refer to Montevideo weather in February.
When comparing the weather in August to that of March, we find notable differences in temperature and precipitation patterns. August experiences cooler temperatures with a minimum of 6°C (43°F) and a maximum of 19°C (67°F), resulting in an average of 12°C (54°F). In contrast, March boasts warmer weather, with minimum temperatures around 14°C (57°F) and maximums reaching 29°C (84°F), giving it an average of 21°C (70°F). While August has a slightly higher precipitation level at 81 mm (3.2 in) over 8 days, March is not far behind with 74 mm (2.9 in) over 7 days. Both months maintain a relatively high humidity level, with August at 72% and March at 73%. For a detailed look at March weather, you can visit Montevideo weather in March.
When comparing the weather in August and April, notable differences emerge in both temperature and humidity. April enjoys a warmer climate with average temperatures ranging from a minimum of 12°C (53°F) to a maximum of 27°C (82°F), while August is cooler, with temperatures averaging between 6°C (43°F) and 19°C (67°F). Additionally, April experiences slightly more precipitation, totaling 87 mm (3.4 in) over about 7 days, compared to August's 81 mm (3.2 in) over 8 days. Humidity levels are also higher in April at 79%, compared to 72% in August. For more detailed information about April's weather, you can visit Montevideo weather in April.
When comparing the weather in May and August, we notice some distinct differences. May tends to be warmer, with average temperatures ranging from a minimum of 8°C (47°F) to a maximum of 22°C (72°F), while August experiences cooler temperatures, with averages between 6°C (43°F) and 19°C (67°F). Additionally, May sees higher precipitation levels, with 115 mm (4.5 in) over 8 days compared to August's 81 mm (3.2 in), making May slightly wetter despite having the same number of rainy days. Humidity levels are also comparable, with May at 82% and August at 72%, leading to a more humid sensation in May. For those interested in more details, you can check out Montevideo weather in May.
In comparing the weather of June and August, both months exhibit relatively cool temperatures typical of late autumn and winter. June experiences slightly warmer conditions, with temperatures ranging from a minimum of 7°C (44°F) to a maximum of 20°C (69°F), while August's range is a bit lower, from a minimum of 6°C (43°F) to a maximum of 19°C (67°F). Precipitation is slightly higher in June, registering 91 mm (3.6 in) over 10 days compared to August’s 81 mm (3.2 in) over 8 days. Humidity also reflects a trend towards dryness in August, averaging 72%, as opposed to June’s 80%. For a more detailed look at June's climate, you can visit Montevideo weather in June.
In comparing the weather of August and July, we see that both months share similar temperature ranges, with minimum temperatures at 6°C (43°F) and maximums reaching 19°C (67°F). However, August boasts a slightly higher average temperature of 12°C (54°F) compared to July’s 11°C (52°F). Precipitation is less frequent in August, occurring on 8 days with a total of 81 mm (3.2 in), while July sees more rain with 122 mm (4.8 in) over 10 days. Despite these differences, both months maintain a consistent humidity level of 72%. For more details about July's weather, you can explore Montevideo weather in July.
In comparing the weather between August and September, we see a noticeable warming trend. August features a minimum temperature of 6°C (43°F) and averages around 12°C (54°F), peaking at 19°C (67°F), while September offers a slightly milder range with minimum temperatures at 7°C (45°F) and an average of 14°C (57°F), reaching up to a maximum of 24°C (75°F). Both months experience similar levels of precipitation, with August receiving 81 mm (3.2 in) and September slightly wetter at 91 mm (3.6 in), each having rain on about eight days. Additionally, humidity rises slightly in September to 76%, compared to 72% in August, contributing to a feeling of increased warmth. For more detailed insights, you can check out Montevideo weather in September.
In comparing the weather between August and October, we observe a notable shift in temperatures and conditions. August features a cooler climate with minimum temperatures dropping to 6°C (43°F) and an average of 12°C (54°F), while October sees a more moderate minimum of 8°C (47°F) and a higher average temperature of 16°C (61°F). Maximum temperatures also rise in October to 23°C (73°F), compared to August's peak of 19°C (67°F). Precipitation levels remain similar, with August recording 81 mm (3.2 in) and October slightly higher at 85 mm (3.3 in), both experiencing rain on about 8 days. Humidity levels are comparable, hovering around 71-72%. For a deeper look at October’s weather, you can visit Montevideo weather in October.
In August, the weather is generally cooler, with temperatures ranging from a minimum of 6°C (43°F) to a maximum of 19°C (67°F), and an average of 12°C (54°F). It experiences higher humidity at 72% and sees about 81 mm (3.2 in) of precipitation over 8 days. In contrast, November brings warmer temperatures, starting from a minimum of 12°C (55°F) and reaching up to 27°C (81°F), with an average of 19°C (66°F). The month has slightly less rainfall, totaling 66 mm (2.6 in) over 7 days, and humidity decreases to 68%. For more details on the weather in November, check Montevideo weather in November.
In comparing the weather between August and December, we see significant differences in temperature and humidity. August experiences cooler temperatures with a minimum of 6°C (43°F) and an average of 12°C (54°F), while December boasts milder conditions, with temperatures ranging from a minimum of 13°C (57°F) to a maximum of 29°C (84°F). Additionally, August is characterized by higher humidity levels at 72% and more rainy days (8 days with 81 mm of precipitation), compared to December's lower humidity of 65% and fewer rainy days (5 days with 61 mm of precipitation). For more detailed insights, you can visit Montevideo weather in December.
As August unfolds in Montevideo, it brings a cooler touch compared to the warmer summer months, with average temperatures hovering around 12°C (54°F). While sunshine still graces the city, the likelihood of rain increases, with 81 mm (3.2 in) of precipitation spread over 8 days, making it one of the wetter months. The 72% humidity can add a noticeable chill, particularly during the evenings. This transition period invites visitors to experience the city's cultural offerings with fewer crowds, so if you're planning a trip during this time, pack layers to enjoy Montevideo's unique charm. For more insights on how the city's weather varies throughout the year, check out Montevideo Climate.