September Weather in Tamarindo, Peru

Last updated: August 27, 2025

In Tamarindo, Peru, the average temperature in September hovers around 18°C (64°F), with a comfortable range, where the minimum dips to 13°C (57°F) and the maximum reaches 23°C (73°F). The month experiences minimal precipitation, with just 5 mm (0.2 in) spread over 0 days, ensuring plenty of dry weather. With an average humidity of 42%, it's a great time to enjoy the outdoors!

September Temperature in Tamarindo

In September in Tamarindo, the average temperature is 18°C (64°F). The maximum can reach 23°C (73°F) and the minimum can be as low as 13°C (57°F). This mild climate makes it an ideal time for travelers to explore and enjoy outdoor activities in Tamarindo.

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

The chart illustrates September temperature patterns in Tamarindo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tamarindo, September typically has an average temperature of 18°C (64°F), with highs reaching up to 23°C (73°F) and lows dropping to around 13°C (57°F).

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

September Precipitation in Tamarindo

In Tamarindo in September, the precipitation amount is 5 mm (0.2 in) during a span of 0 days.

September Precipitation Trends in Tamarindo

The chart displays monthly precipitation patterns in Tamarindo, 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 Tamarindo, September typically receives around 5 mm (0.2 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 Tamarindo

In Tamarindo in September humidity is 42%. With an average temperature of 18°C (64°F), this humidity feels like a refreshing embrace, making it pleasant for traveling as you can enjoy outdoor activities without the stickiness often associated with higher humidity levels.

September Average Humidity in Tamarindo

This chart illustrates the average monthly humidity levels in Tamarindo, 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 Tamarindo is approximately 42%, 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 Tamarindo

In Tamarindo 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 Tamarindo, you can check here.

Maximum UV Index Levels in Tamarindo for September

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

Data source: Tamarindo 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 Tamarindo Compares to Other Months

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

This table compares monthly weather conditions in Tamarindo, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	22°C (72°F)	30 mm (1.2 inches)	83%	extreme
February Weather	24°C (75°F)	41 mm (1.6 inches)	81%	extreme
March Weather	24°C (75°F)	63 mm (2.5 inches)	88%	extreme
April Weather	22°C (72°F)	24 mm (0.9 inches)	85%	extreme
May Weather	20°C (69°F)	10 mm (0.4 inches)	78%	extreme
June Weather	19°C (67°F)	2 mm (0.1 inches)	62%	extreme
July Weather	18°C (65°F)	3 mm (0.1 inches)	44%	extreme
August Weather	18°C (65°F)	3 mm (0.1 inches)	38%	extreme
September Weather	18°C (64°F)	5 mm (0.2 inches)	42%	extreme
October Weather	18°C (65°F)	9 mm (0.3 inches)	58%	extreme
November Weather	19°C (66°F)	10 mm (0.4 inches)	69%	extreme
December Weather	21°C (69°F)	30 mm (1.2 inches)	82%	extreme