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December Weather in Herval, Brazil

Last updated: August 22, 2025

In Herval, Brazil, the average temperature in December hovers around 22°C (71°F), but you can expect a range from a cool 7°C (45°F) to a sweltering 36°C (97°F). This month typically brings about 64 mm (2.5 in) of precipitation over 7 days, accompanied by an average humidity level of 77%. Prepare for a mix of comfortable warmth and the occasional rain!

December Temperature in Herval

In December in Herval, the average temperature is 22°C (71°F). Maximums can reach 36°C (97°F) and minimums can be as low as 7°C (45°F). This makes it a great time to explore Herval while enjoying pleasantly warm days and cool evenings.

December Weather in Herval: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Herval, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Herval, December typically has an average temperature of 22°C (71°F), with highs reaching up to 36°C (97°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec747370665956545559636771
Data source: Temperature data for Herval generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Herval

In Herval in December, the precipitation amount is 64 mm (2.5 in) accumulated over a period of 7 days.

December Precipitation Trends in Herval

The chart displays monthly precipitation patterns in Herval, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Herval, December typically receives around 64 mm (2.5 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec13494767694981091181581378564
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Herval

In Herval in December, humidity is 77%. With an average temperature of 22°C (71°F), this humidity feels like a warm, enveloping blanket that can make walking around feel a bit stifling, requiring frequent breaks in shaded areas and plenty of hydration.

December Average Humidity in Herval

This chart illustrates the average monthly humidity levels in Herval, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Herval is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec71%74%76%82%87%86%81%78%82%82%79%77%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Herval

In Herval 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 Herval, you can check here.

Maximum UV Index Levels in Herval for December

The chart shows the monthly maximum UV Index (UVI) for Herval in December, 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. In December, the maximum UV index in Herval typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141312854469111314
Data source: Herval December 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.

How December Weather in Herval Compares to Other Months

Weather in Herval varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Herval, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Herval, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (75°F)133 mm (5.3 inches)71%extreme
February Weather23°C (73°F)94 mm (3.7 inches)74%extreme
March Weather21°C (70°F)76 mm (3.0 inches)76%extreme
April Weather19°C (66°F)76 mm (3.0 inches)81%very high
May Weather15°C (59°F)94 mm (3.7 inches)87%moderate
June Weather13°C (56°F)98 mm (3.9 inches)86%moderate
July Weather12°C (54°F)109 mm (4.3 inches)81%moderate
August Weather13°C (56°F)118 mm (4.7 inches)78%high
September Weather15°C (60°F)158 mm (6.2 inches)82%very high
October Weather17°C (63°F)137 mm (5.4 inches)82%extreme
November Weather20°C (67°F)85 mm (3.3 inches)79%extreme
December Weather22°C (71°F)64 mm (2.5 inches)77%extreme

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