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December Weather in San Fernando, Peru

Last updated: August 27, 2025

The average temperature in San Fernando, Peru during December hovers around 27°C (80°F), providing a warm climate. Expect a minimum of 22°C (72°F) and a maximum reaching 34°C (93°F). With 283 mm (11.1 in) of precipitation spread over 26 days, it's wise to keep an umbrella handy. The month is characterized by high humidity, averaging an impressive 89%, making it feel quite tropical.

December Temperature in San Fernando

In December in San Fernando, the average temperature is 27°C (80°F). Maximums can reach 34°C (93°F), while minimums can drop as low as 22°C (72°F). This pleasant climate makes San Fernando an ideal destination for travelers seeking warmth and sunshine during this time.

December Weather in San Fernando: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in San Fernando, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Fernando, December typically has an average temperature of 27°C (80°F), with highs reaching up to 34°C (93°F) and lows dropping to around 22°C (72°F).
JanFebMarAprMayJunJulAugSepOctNovDec808079797978787981818080
Data source: Temperature data for San Fernando 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 San Fernando

In San Fernando in December, the total precipitation amount is 283 mm (11.1 in) over a period of 26 days.

December Precipitation Trends in San Fernando

The chart displays monthly precipitation patterns in San Fernando, 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 San Fernando, December typically receives around 283 mm (11.1 inches) of precipitation spread over approximately 26 days.
JanFebMarAprMayJunJulAugSepOctNovDec2823584182731841079992145209293283
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in San Fernando

In San Fernando in December humidity is 89%. With an average temperature of 27°C (80°F), this humidity feels like a warm, sticky embrace, making travel feel heavy and reminiscent of a sauna, where even the slightest exertion can leave you feeling drenched and yearning for a cool breeze.

December Average Humidity in San Fernando

This chart illustrates the average monthly humidity levels in San Fernando, 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 San Fernando is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%82%86%88%82%67%48%39%40%51%74%89%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in San Fernando

In San Fernando 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 San Fernando, you can check here.

Maximum UV Index Levels in San Fernando for December

The chart shows the monthly maximum UV Index (UVI) for San Fernando 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 San Fernando typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151616151211111214151514
Data source: San Fernando 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 San Fernando Compares to Other Months

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

This table compares monthly weather conditions in San Fernando, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (80°F)282 mm (11.1 inches)85%extreme
February Weather26°C (80°F)357 mm (14.1 inches)82%extreme
March Weather26°C (79°F)418 mm (16.5 inches)86%extreme
April Weather26°C (79°F)273 mm (10.7 inches)88%extreme
May Weather26°C (79°F)184 mm (7.2 inches)82%extreme
June Weather26°C (79°F)107 mm (4.2 inches)67%extreme
July Weather25°C (78°F)99 mm (3.9 inches)48%extreme
August Weather26°C (80°F)92 mm (3.6 inches)39%extreme
September Weather27°C (81°F)145 mm (5.7 inches)40%extreme
October Weather27°C (81°F)209 mm (8.2 inches)51%extreme
November Weather27°C (81°F)293 mm (11.5 inches)74%extreme
December Weather27°C (80°F)283 mm (11.1 inches)89%extreme

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