September Weather in Istmina, Colombia

Last updated: August 23, 2025

In Istmina, Colombia, the average temperature in September hovers around 26°C (79°F). Expect daily lows of 21°C (70°F) and highs reaching up to 33°C (92°F). This month sees a substantial precipitation amount of 903 mm (35.6 in) over 30 days, contributing to an average humidity level of about 80%. Prepare for a warm and humid experience!

September Temperature in Istmina

In September, in Istmina, the average temperature is 26°C (79°F). The maximum can reach 33°C (92°F) and the minimum can be as low as 21°C (70°F). This pleasant climate makes Istmina an ideal destination for travelers seeking warm weather and outdoor activities.

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

The chart illustrates September temperature patterns in Istmina, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Istmina, September typically has an average temperature of 26°C (79°F), with highs reaching up to 33°C (92°F) and lows dropping to around 21°C (70°F).

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

September Precipitation in Istmina

In Istmina in September, the total precipitation amount is 903 mm (35.6 in) over a span of 30 days.

September Precipitation Trends in Istmina

The chart displays monthly precipitation patterns in Istmina, 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 Istmina, September typically receives around 903 mm (35.6 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 Istmina

In Istmina in September humidity is 80%. With an average temperature of 26°C (79°F), this humidity feels like a heavy blanket, making outdoor activities feel sticky and exhausting, potentially dampening the travel experience and necessitating frequent breaks to cool down and hydrate.

September Average Humidity in Istmina

This chart illustrates the average monthly humidity levels in Istmina, 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 Istmina 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 Istmina

In Istmina 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 Istmina, you can check here.

Maximum UV Index Levels in Istmina for September

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

Data source: Istmina 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 Istmina Compares to Other Months

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

This table compares monthly weather conditions in Istmina, 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 (80°F)	344 mm (13.5 inches)	78%	extreme
February Weather	27°C (81°F)	400 mm (15.7 inches)	77%	extreme
March Weather	27°C (81°F)	435 mm (17.1 inches)	80%	extreme
April Weather	27°C (80°F)	593 mm (23.4 inches)	83%	extreme
May Weather	26°C (80°F)	817 mm (32.2 inches)	87%	extreme
June Weather	26°C (80°F)	880 mm (34.7 inches)	87%	extreme
July Weather	26°C (80°F)	864 mm (34.0 inches)	85%	extreme
August Weather	26°C (80°F)	910 mm (35.8 inches)	80%	extreme
September Weather	26°C (79°F)	903 mm (35.6 inches)	80%	extreme
October Weather	26°C (79°F)	835 mm (32.9 inches)	85%	extreme
November Weather	26°C (79°F)	810 mm (31.9 inches)	87%	extreme
December Weather	26°C (79°F)	503 mm (19.8 inches)	83%	extreme