September Weather in Carnarvon, South Africa

Last updated: August 31, 2025

In September, the average temperature in Carnarvon, South Africa hovers around 15°C (60°F). Expect a minimum chill of -2°C (28°F) and the occasional warm day reaching up to 32°C (90°F). Precipitation is light, with only 6 mm (0.2 in) falling over the course of just 1 day, and the average humidity rests at a comfortable 58%.

September Temperature in Carnarvon

In September, in Carnarvon, the average temperature is 15°C (60°F). Maximums can reach up to 32°C (90°F), while minimums can plummet to as low as -2°C (28°F). Be prepared for a mix of warm and chilly weather, making it essential to pack accordingly for your trip.

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

The chart illustrates September temperature patterns in Carnarvon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Carnarvon, September typically has an average temperature of 15°C (60°F), with highs reaching up to 32°C (90°F) and lows dropping to around -2°C (28°F).

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

September Precipitation in Carnarvon

In Carnarvon in September, the precipitation amount is 6 mm (0.2 in) over the course of 1 day.

September Precipitation Trends in Carnarvon

The chart displays monthly precipitation patterns in Carnarvon, 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 Carnarvon, September typically receives around 6 mm (0.2 inches) of precipitation spread over approximately 1 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 Carnarvon

In Carnarvon in September humidity is 58%. With an average temperature of 15°C (60°F), this humidity feels like a refreshing embrace, making it comfortable for traveling but requiring light layers and occasional breaks to stay cool and enjoy the scenery.

September Average Humidity in Carnarvon

This chart illustrates the average monthly humidity levels in Carnarvon, 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 Carnarvon is approximately 58%, 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 Carnarvon

In Carnarvon in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Carnarvon.

Maximum UV Index Levels in Carnarvon for September

The chart shows the monthly maximum UV Index (UVI) for Carnarvon 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 Carnarvon typically reaches 10, which falls under the very high exposure category.

Data source: Carnarvon 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 Carnarvon Compares to Other Months

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

This table compares monthly weather conditions in Carnarvon, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	25°C (77°F)	29 mm (1.1 inches)	50%	extreme
February Weather	24°C (75°F)	28 mm (1.1 inches)	55%	extreme
March Weather	22°C (72°F)	12 mm (0.5 inches)	65%	extreme
April Weather	17°C (64°F)	37 mm (1.5 inches)	72%	very high
May Weather	14°C (57°F)	7 mm (0.3 inches)	78%	high
June Weather	10°C (51°F)	3 mm (0.1 inches)	79%	moderate
July Weather	10°C (50°F)	8 mm (0.3 inches)	73%	moderate
August Weather	10°C (51°F)	2 mm (0.1 inches)	64%	high
September Weather	15°C (60°F)	6 mm (0.2 inches)	58%	very high
October Weather	18°C (65°F)	14 mm (0.5 inches)	53%	extreme
November Weather	21°C (69°F)	7 mm (0.3 inches)	42%	extreme
December Weather	23°C (74°F)	23 mm (0.9 inches)	44%	extreme