January Weather in Sao Juliao, Portugal

Last updated: August 27, 2025

In Sao Juliao, Portugal, the average temperature for January hovers around 8°C (47°F). Prepare for a slight chill as temperatures can dip to a minimum of -3°C (27°F), while daytime highs can reach up to 19°C (67°F). During this month, you can expect about 32 mm (1.3 in) of precipitation over approximately 5 days, with an average humidity level of 87%.

January Temperature in Sao Juliao

In January in Sao Juliao, the average temperature is 8°C (47°F). The maximum can reach 19°C (67°F), while the minimum can drop as low as -3°C (27°F). It's a great time to visit for those who enjoy cool weather and outdoor activities, so pack accordingly!

January Weather in Sao Juliao: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Sao Juliao, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sao Juliao, January typically has an average temperature of 8°C (47°F), with highs reaching up to 19°C (67°F) and lows dropping to around -3°C (27°F).

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

January Precipitation in Sao Juliao

In Sao Juliao in January, the precipitation amount is 32 mm (1.3 in) over the course of 5 days.

January Precipitation Trends in Sao Juliao

The chart displays monthly precipitation patterns in Sao Juliao, 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 Sao Juliao, January typically receives around 32 mm (1.3 inches) of precipitation spread over approximately 5 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Sao Juliao

In Sao Juliao in January, humidity is 87%. With an average temperature of 8°C (47°F), this humidity feels like a damp chill that clings to your skin, making outdoor exploration uncomfortably muggy despite the cool air.

January Average Humidity in Sao Juliao

This chart illustrates the average monthly humidity levels in Sao Juliao, 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 Sao Juliao is approximately 87%, 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 Sao Juliao

In Sao Juliao in January, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Sao Juliao, you can check the information here.

Maximum UV Index Levels in Sao Juliao for January

The chart shows the monthly maximum UV Index (UVI) for Sao Juliao 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 Sao Juliao typically reaches 3, which falls under the moderate exposure category.

Data source: Sao Juliao 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 Sao Juliao Compares to Other Months

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

This table compares monthly weather conditions in Sao Juliao, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (47°F)	32 mm (1.3 inches)	87%	moderate
February Weather	11°C (51°F)	47 mm (1.9 inches)	76%	moderate
March Weather	12°C (54°F)	87 mm (3.4 inches)	68%	high
April Weather	14°C (58°F)	81 mm (3.2 inches)	64%	very high
May Weather	19°C (66°F)	41 mm (1.6 inches)	62%	very high
June Weather	22°C (71°F)	13 mm (0.5 inches)	47%	extreme
July Weather	25°C (77°F)	4 mm (0.2 inches)	46%	very high
August Weather	25°C (78°F)	7 mm (0.3 inches)	42%	very high
September Weather	23°C (73°F)	31 mm (1.2 inches)	53%	very high
October Weather	18°C (65°F)	51 mm (2.0 inches)	69%	high
November Weather	12°C (54°F)	72 mm (2.9 inches)	85%	moderate
December Weather	10°C (50°F)	69 mm (2.7 inches)	87%	moderate