September Weather in El Rosario, Nicaragua

Last updated: August 31, 2025

In September, the average temperature in El Rosario, Nicaragua is a warm 27°C (81°F). You can expect a minimum temperature of 22°C (72°F) and a maximum of 35°C (96°F). Be prepared for rain, as the region receives about 218 mm (8.6 in) of precipitation over approximately 25 days, contributing to an average humidity level of 80%.

September Temperature in El Rosario

In September, in El Rosario, the average temperature is 27°C (81°F), with maximums reaching 35°C (96°F) and minimums as low as 22°C (72°F). This warm and pleasant weather makes El Rosario an ideal destination for travelers seeking a sunny getaway.

September Weather in El Rosario: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in El Rosario, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In El Rosario, September typically has an average temperature of 27°C (81°F), with highs reaching up to 35°C (96°F) and lows dropping to around 22°C (72°F).

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

September Precipitation in El Rosario

In El Rosario in September, the total precipitation amount is 218 mm (8.6 in) recorded over the course of 25 days.

September Precipitation Trends in El Rosario

The chart displays monthly precipitation patterns in El Rosario, 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 El Rosario, September typically receives around 218 mm (8.6 inches) of precipitation spread over approximately 25 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 El Rosario

In El Rosario in September humidity is 80%. With an average temperature of 27°C (81°F), this humidity feels like a warm, enveloping blanket that clings to your skin, making travel tiring as sweat beads form quickly and the air feels thick and heavy.

September Average Humidity in El Rosario

This chart illustrates the average monthly humidity levels in El Rosario, 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 El Rosario is approximately 80%, 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 El Rosario

In El Rosario in September, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in El Rosario.

Maximum UV Index Levels in El Rosario for September

The chart shows the monthly maximum UV Index (UVI) for El Rosario 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 El Rosario typically reaches 13, which falls under the extreme exposure category.

Data source: El Rosario 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 El Rosario Compares to Other Months

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

This table compares monthly weather conditions in El Rosario, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	27°C (81°F)	3 mm (0.1 inches)	66%	extreme
February Weather	27°C (82°F)	2 mm (0.1 inches)	64%	extreme
March Weather	28°C (83°F)	2 mm (0.1 inches)	63%	extreme
April Weather	29°C (85°F)	15 mm (0.6 inches)	63%	extreme
May Weather	28°C (83°F)	241 mm (9.5 inches)	63%	extreme
June Weather	27°C (81°F)	212 mm (8.4 inches)	74%	extreme
July Weather	28°C (82°F)	69 mm (2.7 inches)	85%	extreme
August Weather	27°C (82°F)	144 mm (5.7 inches)	82%	extreme
September Weather	27°C (81°F)	218 mm (8.6 inches)	80%	extreme
October Weather	26°C (80°F)	393 mm (15.5 inches)	79%	extreme
November Weather	27°C (81°F)	130 mm (5.1 inches)	79%	very high
December Weather	27°C (81°F)	8 mm (0.3 inches)	70%	very high