Last updated: August 22, 2025
In December, the average temperature in San Antonio, Belize hovers around 23°C (74°F), making it a pleasant time to visit. Expect a minimum of 14°C (57°F) and highs reaching up to 32°C (89°F). However, be prepared for some rain, as precipitation averages 65 mm (2.6 in) over 18 days, and the humidity is quite high at 87%.
In December in San Antonio, the average temperature is 23°C (74°F), with maximums reaching 32°C (89°F) and minimums dropping as low as 14°C (57°F). This mild climate makes it an ideal time for travelers to explore the area's outdoor attractions and enjoy pleasant weather.
In San Antonio in December, the precipitation amount is 65 mm (2.6 in) spread over 18 days.
In San Antonio in December, humidity is 87%. With an average temperature of 23°C (74°F), this humidity feels like a warm, sticky embrace that can quickly wear you down while traveling, making even short walks feel exhausting and necessitating frequent breaks for hydration and cool air.
In San Antonio in December, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in San Antonio.
UV Risk Categories
Weather in San Antonio varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in San Antonio, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | 23°C (73°F) | 68 mm (2.7 inches) | 85% | very high |
February Weather | 24°C (76°F) | 50 mm (2.0 inches) | 78% | extreme |
March Weather | 25°C (77°F) | 65 mm (2.5 inches) | 67% | extreme |
April Weather | 27°C (81°F) | 57 mm (2.3 inches) | 62% | extreme |
May Weather | 28°C (82°F) | 106 mm (4.2 inches) | 62% | extreme |
June Weather | 27°C (81°F) | 172 mm (6.8 inches) | 63% | extreme |
July Weather | 27°C (81°F) | 122 mm (4.8 inches) | 66% | extreme |
August Weather | 27°C (81°F) | 130 mm (5.1 inches) | 73% | extreme |
September Weather | 27°C (81°F) | 139 mm (5.5 inches) | 82% | extreme |
October Weather | 26°C (79°F) | 219 mm (8.6 inches) | 86% | extreme |
November Weather | 24°C (76°F) | 138 mm (5.5 inches) | 87% | very high |
December Weather | 23°C (74°F) | 65 mm (2.6 inches) | 87% | very high |