September Weather in Poco Sol, Costa Rica

Last updated: August 23, 2025

In September, the average temperature in Poco Sol, Costa Rica is a pleasant 22°C (73°F), with lows around 18°C (66°F) and highs reaching up to 30°C (86°F). However, be prepared for some rain, as the region experiences an average precipitation of 311 mm (12.2 in) over 29 days, creating a humid atmosphere with an average humidity of 84%.

September Temperature in Poco Sol

In September in Poco Sol, the average temperature is 22°C (73°F). The maximum can reach 30°C (86°F), and the minimum can be as low as 18°C (66°F). This pleasant climate makes Poco Sol an ideal destination for travelers seeking comfortable weather and outdoor activities.

September Weather in Poco Sol: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Poco Sol, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Poco Sol, September typically has an average temperature of 22°C (73°F), with highs reaching up to 30°C (86°F) and lows dropping to around 18°C (66°F).

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

September Precipitation in Poco Sol

In Poco Sol in September, the precipitation amount is 311 mm (12.2 in) over the course of 29 days.

September Precipitation Trends in Poco Sol

The chart displays monthly precipitation patterns in Poco Sol, 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 Poco Sol, September typically receives around 311 mm (12.2 inches) of precipitation spread over approximately 29 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 Poco Sol

In Poco Sol in September, humidity is 84%. With an average temperature of 22°C (73°F), this humidity feels like a warm, enveloping blanket, making outdoor activities quite uncomfortable and necessitating frequent breaks to stay hydrated while exploring.

September Average Humidity in Poco Sol

This chart illustrates the average monthly humidity levels in Poco Sol, 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 Poco Sol is approximately 84%, 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 Poco Sol

In Poco Sol 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 Poco Sol.

Maximum UV Index Levels in Poco Sol for September

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

Data source: Poco Sol 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 Poco Sol Compares to Other Months

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

This table compares monthly weather conditions in Poco Sol, 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)	20 mm (0.8 inches)	71%	extreme
February Weather	23°C (73°F)	6 mm (0.2 inches)	70%	extreme
March Weather	23°C (74°F)	7 mm (0.3 inches)	68%	extreme
April Weather	24°C (75°F)	54 mm (2.1 inches)	69%	extreme
May Weather	23°C (74°F)	292 mm (11.5 inches)	70%	extreme
June Weather	23°C (74°F)	273 mm (10.7 inches)	81%	extreme
July Weather	23°C (73°F)	185 mm (7.3 inches)	88%	extreme
August Weather	23°C (73°F)	265 mm (10.4 inches)	85%	extreme
September Weather	22°C (73°F)	311 mm (12.2 inches)	84%	extreme
October Weather	22°C (72°F)	469 mm (18.4 inches)	82%	extreme
November Weather	22°C (72°F)	163 mm (6.4 inches)	81%	extreme
December Weather	22°C (72°F)	46 mm (1.8 inches)	74%	very high