September Weather in Sullana, Peru

Last updated: August 27, 2025

In September, the average temperature in Sullana, Peru is a pleasant 21°C (70°F). While temperatures can dip to a minimum of 15°C (59°F), they can also soar to a maximum of 31°C (88°F). Expect minimal precipitation, with only 2 mm (0.1 in) over 0 days. Humidity levels hover around a comfortable 75%, making it an ideal time to explore the area!

September Temperature in Sullana

In September in Sullana, the average temperature is 21°C (70°F). Maximums can reach 31°C (88°F), and minimums can be as low as 15°C (59°F). It's a perfect time to explore Sullana while enjoying comfortable weather.

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

The chart illustrates September temperature patterns in Sullana, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sullana, September typically has an average temperature of 21°C (70°F), with highs reaching up to 31°C (88°F) and lows dropping to around 15°C (59°F).

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

September Precipitation in Sullana

In Sullana in September, the precipitation amount is 2 mm (0.1 in) during a span of 0 days.

September Precipitation Trends in Sullana

The chart displays monthly precipitation patterns in Sullana, 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 Sullana, September typically receives around 2 mm (0.1 inches) of precipitation spread over approximately 0 days.

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

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Millimeters (mm) Inches (in)

September Humidity in Sullana

In Sullana in September, humidity is 75%. With an average temperature of 21°C (70°F), this humidity feels like a warm, enveloping blanket that makes exploring the area feel slightly sticky, requiring travelers to stay hydrated and take occasional breaks in the shade to fully enjoy their adventures.

September Average Humidity in Sullana

This chart illustrates the average monthly humidity levels in Sullana, 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 Sullana is approximately 75%, 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 Sullana

In Sullana in September, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Sullana, you can check here.

Maximum UV Index Levels in Sullana for September

The chart shows the monthly maximum UV Index (UVI) for Sullana 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 Sullana typically reaches 14, which falls under the extreme exposure category.

Data source: Sullana 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 Sullana Compares to Other Months

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

This table compares monthly weather conditions in Sullana, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (80°F)	19 mm (0.7 inches)	89%	extreme
February Weather	27°C (81°F)	79 mm (3.1 inches)	87%	extreme
March Weather	27°C (81°F)	163 mm (6.4 inches)	87%	extreme
April Weather	26°C (79°F)	36 mm (1.4 inches)	86%	extreme
May Weather	24°C (76°F)	10 mm (0.4 inches)	89%	extreme
June Weather	23°C (73°F)	4 mm (0.2 inches)	84%	extreme
July Weather	21°C (70°F)	3 mm (0.1 inches)	71%	extreme
August Weather	21°C (70°F)	1 mm (0.0 inches)	71%	extreme
September Weather	21°C (70°F)	2 mm (0.1 inches)	75%	extreme
October Weather	22°C (71°F)	7 mm (0.3 inches)	77%	extreme
November Weather	22°C (72°F)	10 mm (0.4 inches)	79%	extreme
December Weather	24°C (76°F)	24 mm (0.9 inches)	86%	extreme