September Weather in Loreto, Argentina

Last updated: August 22, 2025

In September, the average temperature in Loreto, Argentina is a pleasant 20°C (69°F). Expect temperatures to range from a cool 7°C (45°F) to a warm 38°C (100°F). During this time, precipitation averages 101 mm (4.0 in) over approximately 10 days, while the average humidity remains at a comfortable 54%.

September Temperature in Loreto

In September in Loreto, the average temperature is 20°C (69°F). Maximums can reach 38°C (100°F) and minimums can be as low as 7°C (45°F). Be prepared for warm days and cooler nights when planning your travel.

September Weather in Loreto: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Loreto, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Loreto, September typically has an average temperature of 20°C (69°F), with highs reaching up to 38°C (100°F) and lows dropping to around 7°C (45°F).

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

September Precipitation in Loreto

In Loreto in September, the precipitation amount is 101 mm (4.0 in) spread over the course of 10 days.

September Precipitation Trends in Loreto

The chart displays monthly precipitation patterns in Loreto, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Loreto, September typically receives around 101 mm (4.0 inches) of precipitation spread over approximately 10 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Loreto

In Loreto in September humidity is 54%. With an average temperature of 20°C (69°F), this humidity feels like a refreshing embrace, making it comfortable for traveling while allowing for pleasant outdoor activities.

September Average Humidity in Loreto

This chart illustrates the average monthly humidity levels in Loreto, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Loreto is approximately 54%, offering insight into how humid the weather typically is during this month.

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

September UV Index in Loreto

In Loreto in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Loreto.

Maximum UV Index Levels in Loreto for September

The chart shows the monthly maximum UV Index (UVI) for Loreto in September, 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 September, the maximum UV index in Loreto typically reaches 10, which falls under the very high exposure category.

Data source: Loreto September 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 September Weather in Loreto Compares to Other Months

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

This table compares monthly weather conditions in Loreto, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	28°C (82°F)	150 mm (5.9 inches)	77%	extreme
February Weather	27°C (81°F)	69 mm (2.7 inches)	71%	extreme
March Weather	25°C (77°F)	143 mm (5.6 inches)	74%	extreme
April Weather	22°C (72°F)	135 mm (5.3 inches)	82%	very high
May Weather	18°C (65°F)	155 mm (6.1 inches)	82%	high
June Weather	17°C (62°F)	91 mm (3.6 inches)	73%	moderate
July Weather	16°C (61°F)	62 mm (2.5 inches)	67%	high
August Weather	18°C (64°F)	58 mm (2.3 inches)	49%	high
September Weather	20°C (69°F)	101 mm (4.0 inches)	54%	very high
October Weather	23°C (73°F)	116 mm (4.6 inches)	58%	extreme
November Weather	25°C (77°F)	146 mm (5.7 inches)	69%	extreme
December Weather	27°C (80°F)	95 mm (3.7 inches)	84%	extreme