September Weather in Bethlehem, South Africa

Last updated: August 31, 2025

In Bethlehem, South Africa, the average temperature in September is a mild 15°C (59°F). However, be prepared for fluctuations, as temperatures can drop to a chilly -2°C (30°F) or soar up to a warm 31°C (87°F). While enjoying this beautiful month, expect about 13 mm (0.5 in) of precipitation over two days, contributing to an average humidity of 75%.

September Temperature in Bethlehem

In September in Bethlehem, the average temperature is 15°C (59°F). Maximum temperatures can reach 31°C (87°F), while minimums can drop to as low as -2°C (30°F). It's essential to pack for both warmth and comfort, as conditions can vary significantly during this month.

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

The chart illustrates September temperature patterns in Bethlehem, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bethlehem, September typically has an average temperature of 15°C (59°F), with highs reaching up to 31°C (87°F) and lows dropping to around -2°C (30°F).

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

September Precipitation in Bethlehem

In Bethlehem in September, the precipitation amount is 13 mm (0.5 in) over a span of 2 days.

September Precipitation Trends in Bethlehem

The chart displays monthly precipitation patterns in Bethlehem, 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 Bethlehem, September typically receives around 13 mm (0.5 inches) of precipitation spread over approximately 2 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 Bethlehem

In Bethlehem in September, humidity is 75%. With an average temperature of 15°C (59°F), this humidity feels like a warm blanket enveloping you, making it feel more oppressive than refreshing, which can be a challenge for travelers seeking comfort while exploring the area.

September Average Humidity in Bethlehem

This chart illustrates the average monthly humidity levels in Bethlehem, 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 Bethlehem is approximately 75%, 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 Bethlehem

In Bethlehem in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Bethlehem.

Maximum UV Index Levels in Bethlehem for September

The chart shows the monthly maximum UV Index (UVI) for Bethlehem 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 Bethlehem typically reaches 11, which falls under the extreme exposure category.

Data source: Bethlehem 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 Bethlehem Compares to Other Months

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

This table compares monthly weather conditions in Bethlehem, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	20°C (67°F)	114 mm (4.5 inches)	85%	extreme
February Weather	19°C (67°F)	135 mm (5.3 inches)	85%	extreme
March Weather	18°C (64°F)	86 mm (3.4 inches)	86%	extreme
April Weather	15°C (59°F)	74 mm (2.9 inches)	87%	extreme
May Weather	11°C (53°F)	16 mm (0.6 inches)	88%	high
June Weather	8°C (47°F)	6 mm (0.2 inches)	83%	moderate
July Weather	8°C (47°F)	2 mm (0.1 inches)	74%	high
August Weather	11°C (52°F)	21 mm (0.8 inches)	66%	very high
September Weather	15°C (59°F)	13 mm (0.5 inches)	75%	extreme
October Weather	17°C (63°F)	50 mm (2.0 inches)	80%	extreme
November Weather	18°C (65°F)	100 mm (3.9 inches)	86%	extreme
December Weather	19°C (66°F)	154 mm (6.1 inches)	86%	extreme