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December Weather in Siaya, Kenya

Last updated: August 23, 2025

In December, the average temperature in Siaya, Kenya hovers around 23°C (73°F), with daily variations ranging from a minimum of 18°C (64°F) to a maximum of 31°C (87°F). Expect a wet season, as precipitation amounts to 181 mm (7.1 in) over approximately 24 days, resulting in an average humidity level of 80%. Embrace the lush, vibrant scenery that thrives in these conditions!

December Temperature in Siaya

In December in Siaya, the average temperature is 23°C (73°F). The maximum can reach 31°C (87°F) and the minimum can be as low as 18°C (64°F). This pleasant climate makes Siaya an ideal destination for outdoor activities and sightseeing during this time.

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

The chart illustrates December temperature patterns in Siaya, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Siaya, December typically has an average temperature of 23°C (73°F), with highs reaching up to 31°C (87°F) and lows dropping to around 18°C (64°F).
JanFebMarAprMayJunJulAugSepOctNovDec747574737372727273737373
Data source: Temperature data for Siaya 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 Siaya

In Siaya in December, the precipitation amount is 181 mm (7.1 in) spread over 24 days.

December Precipitation Trends in Siaya

The chart displays monthly precipitation patterns in Siaya, 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 Siaya, December typically receives around 181 mm (7.1 inches) of precipitation spread over approximately 24 days.
JanFebMarAprMayJunJulAugSepOctNovDec115111219283269142111142159243219181
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Siaya

In Siaya in December humidity is 80%. With an average temperature of 23°C (73°F), this humidity feels like a warm blanket enveloping you, making outdoor activities slightly sticky and requiring frequent breaks in shaded areas to stay comfortable while exploring.

December Average Humidity in Siaya

This chart illustrates the average monthly humidity levels in Siaya, 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 Siaya is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec72%72%69%73%81%75%71%69%73%80%85%80%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Siaya

In Siaya in December, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Siaya.

Maximum UV Index Levels in Siaya for December

The chart shows the monthly maximum UV Index (UVI) for Siaya 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 Siaya typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141516151311121213131212
Data source: Siaya 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 Siaya Compares to Other Months

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

This table compares monthly weather conditions in Siaya, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather23°C (74°F)115 mm (4.5 inches)72%extreme
February Weather24°C (75°F)111 mm (4.4 inches)72%extreme
March Weather23°C (74°F)219 mm (8.6 inches)69%extreme
April Weather23°C (73°F)283 mm (11.1 inches)73%extreme
May Weather23°C (73°F)269 mm (10.6 inches)81%extreme
June Weather22°C (73°F)142 mm (5.6 inches)75%extreme
July Weather22°C (72°F)111 mm (4.4 inches)71%extreme
August Weather22°C (73°F)142 mm (5.6 inches)69%extreme
September Weather23°C (73°F)159 mm (6.2 inches)73%extreme
October Weather23°C (73°F)243 mm (9.6 inches)80%extreme
November Weather23°C (73°F)218 mm (8.6 inches)85%extreme
December Weather23°C (73°F)181 mm (7.1 inches)80%extreme

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