January Weather in Santo Antonio, Sao Tome and Principe

Last updated: August 31, 2025

In January, the average temperature in Santo Antonio, Sao Tome and Principe is a warm 27°C (81°F), with minimums dipping to 25°C (76°F) and maximums reaching up to 29°C (84°F). This month experiences 101 mm (4.0 in) of precipitation spread over 20 days, contributing to an average humidity of 75%. Prepare for a warm and moderately wet month!

January Temperature in Santo Antonio

In January in Santo Antonio, the average temperature is 27°C (81°F), with maximums reaching 29°C (84°F) and minimums dipping as low as 25°C (76°F). This pleasant climate makes it an ideal time for travelers seeking warm weather and outdoor activities.

January Weather in Santo Antonio: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Santo Antonio, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santo Antonio, January typically has an average temperature of 27°C (81°F), with highs reaching up to 29°C (84°F) and lows dropping to around 25°C (76°F).

Data source: Temperature data for Santo Antonio generated using information from the Copernicus Climate Change Service.

January Precipitation in Santo Antonio

In Santo Antonio in January, the total precipitation amount is 101 mm (4.0 in) over the course of 20 days.

January Precipitation Trends in Santo Antonio

The chart displays monthly precipitation patterns in Santo Antonio, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Santo Antonio, January typically receives around 101 mm (4.0 inches) of precipitation spread over approximately 20 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

January Humidity in Santo Antonio

In Santo Antonio in January, humidity is 75%. With an average temperature of 27°C (81°F), this humidity feels like a blanket of warmth enveloping you, making outdoor activities sticky and potentially uncomfortable for traveling.

January Average Humidity in Santo Antonio

This chart illustrates the average monthly humidity levels in Santo Antonio, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Santo Antonio is approximately 75%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Santo Antonio

In Santo Antonio in January, 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 Santo Antonio.

Maximum UV Index Levels in Santo Antonio for January

The chart shows the monthly maximum UV Index (UVI) for Santo Antonio in January, 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 January, the maximum UV index in Santo Antonio typically reaches 12, which falls under the extreme exposure category.

Data source: Santo Antonio January 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 January Weather in Santo Antonio Compares to Other Months

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

This table compares monthly weather conditions in Santo Antonio, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	27°C (81°F)	101 mm (4.0 inches)	75%	extreme
February Weather	28°C (82°F)	96 mm (3.8 inches)	75%	extreme
March Weather	28°C (82°F)	159 mm (6.2 inches)	73%	extreme
April Weather	28°C (82°F)	194 mm (7.6 inches)	74%	extreme
May Weather	27°C (81°F)	212 mm (8.4 inches)	75%	extreme
June Weather	26°C (80°F)	156 mm (6.2 inches)	76%	extreme
July Weather	25°C (78°F)	111 mm (4.4 inches)	76%	very high
August Weather	25°C (78°F)	111 mm (4.4 inches)	83%	extreme
September Weather	26°C (78°F)	259 mm (10.2 inches)	86%	extreme
October Weather	26°C (79°F)	286 mm (11.2 inches)	85%	extreme
November Weather	26°C (80°F)	261 mm (10.3 inches)	81%	extreme
December Weather	27°C (80°F)	172 mm (6.8 inches)	76%	extreme