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December Weather in Waterloo, Sierra Leone

Last updated: August 31, 2025

In December, the average temperature in Waterloo, Sierra Leone hovers around 27°C (81°F), providing a warm atmosphere for visitors. Expect a comfortable minimum of 23°C (74°F) and a lively maximum of 32°C (90°F). However, keep an umbrella handy as precipitation averages 46 mm (1.8 in) over 13 days, contributing to an overall average humidity of 70%. Enjoy the unique blend of warmth and occasional showers!

December Temperature in Waterloo

In December in Waterloo, the average temperature is 27°C (81°F). Maximums can reach 32°C (90°F) and minimums can be as low as 23°C (74°F). This pleasant climate makes Waterloo a great destination for travelers looking to enjoy warm and comfortable weather.

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

The chart illustrates December temperature patterns in Waterloo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Waterloo, December typically has an average temperature of 27°C (81°F), with highs reaching up to 32°C (90°F) and lows dropping to around 23°C (74°F).
JanFebMarAprMayJunJulAugSepOctNovDec818181828179777778798081
Data source: Temperature data for Waterloo 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 Waterloo

In Waterloo in December, the total precipitation amount is 46 mm (1.8 in) spread over a duration of 13 days.

December Precipitation Trends in Waterloo

The chart displays monthly precipitation patterns in Waterloo, 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 Waterloo, December typically receives around 46 mm (1.8 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec1116256219849177772459627014546
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Waterloo

In Waterloo in December humidity is 70%. With an average temperature of 27°C (81°F), this humidity feels like a warm embrace that clings to the skin, making it essential to stay hydrated and plan for plenty of shade while exploring the vibrant sights and sounds.

December Average Humidity in Waterloo

This chart illustrates the average monthly humidity levels in Waterloo, 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 Waterloo is approximately 70%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec65%72%73%78%80%84%84%90%89%86%79%70%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Waterloo

In Waterloo 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 Waterloo.

Maximum UV Index Levels in Waterloo for December

The chart shows the monthly maximum UV Index (UVI) for Waterloo 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 Waterloo typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10111112131213131312109
Data source: Waterloo 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 Waterloo Compares to Other Months

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

This table compares monthly weather conditions in Waterloo, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather27°C (81°F)11 mm (0.4 inches)65%very high
February Weather27°C (81°F)16 mm (0.6 inches)72%extreme
March Weather27°C (82°F)25 mm (1.0 inches)73%extreme
April Weather28°C (82°F)62 mm (2.5 inches)78%extreme
May Weather27°C (81°F)198 mm (7.8 inches)80%extreme
June Weather26°C (79°F)491 mm (19.3 inches)84%extreme
July Weather25°C (78°F)777 mm (30.6 inches)84%extreme
August Weather25°C (78°F)724 mm (28.5 inches)90%extreme
September Weather26°C (78°F)596 mm (23.5 inches)89%extreme
October Weather26°C (79°F)270 mm (10.6 inches)86%extreme
November Weather27°C (80°F)145 mm (5.7 inches)79%very high
December Weather27°C (81°F)46 mm (1.8 inches)70%very high

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