September Weather in Sabalito, Costa Rica

Last updated: August 23, 2025

In September, the average temperature in Sabalito, Costa Rica hovers around 22°C (72°F), providing a pleasant environment for visitors. Expect a minimum temperature of 18°C (65°F) and a maximum of 28°C (82°F), creating comfortable conditions for outdoor activities. However, be prepared for rain, as the region sees 597 mm (23.5 in) of precipitation over 30 days. With an average humidity of 81%, it's advisable to stay hydrated and enjoy the lush surroundings this month brings!

September Temperature in Sabalito

In September in Sabalito, the average temperature is 22°C (72°F). Maximums can reach 28°C (82°F), and minimums can be as low as 18°C (65°F). This pleasant weather makes Sabalito an ideal destination for travelers seeking comfortable conditions for outdoor activities and exploration.

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

The chart illustrates September temperature patterns in Sabalito, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sabalito, September typically has an average temperature of 22°C (72°F), with highs reaching up to 28°C (82°F) and lows dropping to around 18°C (65°F).

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

September Precipitation in Sabalito

In Sabalito in September, the precipitation amount is 597 mm (23.5 in) over a period of 30 days.

September Precipitation Trends in Sabalito

The chart displays monthly precipitation patterns in Sabalito, 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 Sabalito, September typically receives around 597 mm (23.5 inches) of precipitation spread over approximately 30 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 Sabalito

In Sabalito in September, humidity is 81%. With an average temperature of 22°C (72°F), this humidity feels like a warm, enveloping blanket, making traveling feel both lush and a bit stifling, as the air clings to your skin and every step is accompanied by a gentle sheen of moisture.

September Average Humidity in Sabalito

This chart illustrates the average monthly humidity levels in Sabalito, 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 Sabalito is approximately 81%, 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 Sabalito

In Sabalito 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 Sabalito, you can check here.

Maximum UV Index Levels in Sabalito for September

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

Data source: Sabalito 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 Sabalito Compares to Other Months

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

This table compares monthly weather conditions in Sabalito, 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 (71°F)	121 mm (4.8 inches)	68%	extreme
February Weather	22°C (72°F)	117 mm (4.6 inches)	68%	extreme
March Weather	22°C (72°F)	133 mm (5.2 inches)	66%	extreme
April Weather	22°C (72°F)	317 mm (12.5 inches)	67%	extreme
May Weather	22°C (73°F)	558 mm (22.0 inches)	69%	extreme
June Weather	22°C (73°F)	526 mm (20.7 inches)	84%	extreme
July Weather	22°C (72°F)	515 mm (20.3 inches)	85%	extreme
August Weather	22°C (72°F)	568 mm (22.4 inches)	82%	extreme
September Weather	22°C (72°F)	597 mm (23.5 inches)	81%	extreme
October Weather	22°C (72°F)	717 mm (28.2 inches)	80%	extreme
November Weather	22°C (71°F)	521 mm (20.5 inches)	80%	extreme
December Weather	22°C (71°F)	246 mm (9.7 inches)	72%	very high