September Weather in Nandayure, Costa Rica

Last updated: August 23, 2025

In September, the average temperature in Nandayure, Costa Rica is a pleasant 26°C (79°F), with temperatures ranging from a minimum of 22°C (72°F) to a maximum of 32°C (90°F). Be prepared for some rain, as the area receives an average precipitation of 338 mm (13.3 in) over 29 days. With an average humidity of 73%, the weather can feel quite tropical—perfect for enjoying the lush surroundings!

September Temperature in Nandayure

In September in Nandayure, the average temperature is 26°C (79°F). Maximums can reach 32°C (90°F), and minimums can be as low as 22°C (72°F). This mild weather makes it an ideal time for traveling and exploring the local attractions.

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

The chart illustrates September temperature patterns in Nandayure, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Nandayure, September typically has an average temperature of 26°C (79°F), with highs reaching up to 32°C (90°F) and lows dropping to around 22°C (72°F).

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

September Precipitation in Nandayure

In Nandayure in September, the total precipitation amount is 338 mm (13.3 in) over the course of 29 days.

September Precipitation Trends in Nandayure

The chart displays monthly precipitation patterns in Nandayure, 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 Nandayure, September typically receives around 338 mm (13.3 inches) of precipitation spread over approximately 29 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 Nandayure

In Nandayure in September, humidity is 73%. With an average temperature of 26°C (79°F), this humidity feels like a warm, sticky embrace, making travel slightly uncomfortable as you navigate through the heat with a constant sheen of sweat on your skin.

September Average Humidity in Nandayure

This chart illustrates the average monthly humidity levels in Nandayure, 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 Nandayure is approximately 73%, 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 Nandayure

In Nandayure 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 Nandayure.

Maximum UV Index Levels in Nandayure for September

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

Data source: Nandayure 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 Nandayure Compares to Other Months

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

This table compares monthly weather conditions in Nandayure, 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 (79°F)	19 mm (0.8 inches)	72%	extreme
February Weather	27°C (81°F)	7 mm (0.3 inches)	71%	extreme
March Weather	28°C (82°F)	9 mm (0.4 inches)	70%	extreme
April Weather	27°C (81°F)	102 mm (4.0 inches)	71%	extreme
May Weather	26°C (80°F)	382 mm (15.0 inches)	71%	extreme
June Weather	26°C (79°F)	389 mm (15.3 inches)	79%	extreme
July Weather	26°C (79°F)	311 mm (12.2 inches)	79%	extreme
August Weather	26°C (79°F)	326 mm (12.8 inches)	75%	extreme
September Weather	26°C (79°F)	338 mm (13.3 inches)	73%	extreme
October Weather	26°C (78°F)	490 mm (19.3 inches)	73%	extreme
November Weather	26°C (78°F)	193 mm (7.6 inches)	74%	extreme
December Weather	26°C (79°F)	50 mm (2.0 inches)	72%	very high