Last updated: August 28, 2025
In Dieciocho de Julio, Uruguay, the average temperature in December is a pleasant 21°C (70°F), with minimums dipping to 10°C (51°F) and maximums reaching up to 32°C (89°F). Expect about 50 mm (2.0 in) of precipitation spread over 8 days, contributing to an average humidity level of 77%. Enjoy the mild climate while staying prepared for occasional rain!
In December, in Dieciocho de Julio, the average temperature is 21°C (70°F). The maximum can reach as high as 32°C (89°F), while the minimum can drop to as low as 10°C (51°F). It's an ideal time to explore the area, so don't forget to pack accordingly for both warm and cooler moments during your travels.
In Dieciocho de Julio in December, the total precipitation amount is 50 mm (2.0 in) spread over 8 days.
In Dieciocho de Julio in December, humidity is 77%. With an average temperature of 21°C (70°F), this humidity feels like a warm, slightly sticky embrace, making travel invigorating yet slightly uncomfortable as you navigate the vibrant streets and outdoor attractions.
In Dieciocho de Julio in December, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Dieciocho de Julio, you can check here.
UV Risk Categories
Weather in Dieciocho de Julio varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Dieciocho de Julio, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 23°C (74°F) | 104 mm (4.1 inches) | 71% | extreme |
| February Weather | 23°C (73°F) | 124 mm (4.9 inches) | 74% | extreme |
| March Weather | 21°C (71°F) | 66 mm (2.6 inches) | 76% | extreme |
| April Weather | 20°C (68°F) | 82 mm (3.2 inches) | 81% | very high |
| May Weather | 16°C (61°F) | 69 mm (2.7 inches) | 87% | moderate |
| June Weather | 14°C (57°F) | 137 mm (5.4 inches) | 86% | moderate |
| July Weather | 12°C (54°F) | 105 mm (4.2 inches) | 81% | moderate |
| August Weather | 13°C (55°F) | 107 mm (4.2 inches) | 78% | high |
| September Weather | 15°C (58°F) | 109 mm (4.3 inches) | 82% | very high |
| October Weather | 16°C (62°F) | 132 mm (5.2 inches) | 82% | extreme |
| November Weather | 19°C (67°F) | 67 mm (2.6 inches) | 79% | extreme |
| December Weather | 21°C (70°F) | 50 mm (2.0 inches) | 77% | extreme |