September Weather in Mendi, Papua New Guinea

Last updated: August 31, 2025

In Mendi, Papua New Guinea during September, the average temperature hovers around 16°C (62°F). You can expect minimum temperatures to drop to 10°C (50°F), while maximum temperatures can reach up to 24°C (75°F). With an average precipitation of 684 mm (26.9 in) spread over 29 days, it’s no surprise that the humidity levels remain high at around 84%. Prepare for a month of varied weather!

September Temperature in Mendi

In September in Mendi, the average temperature is 16°C (62°F). The maximum can reach 24°C (75°F), while the minimum can be as low as 10°C (50°F). This mild climate makes Mendi an ideal destination for travelers seeking comfortable weather and outdoor activities.

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

The chart illustrates September temperature patterns in Mendi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mendi, September typically has an average temperature of 16°C (62°F), with highs reaching up to 24°C (75°F) and lows dropping to around 10°C (50°F).

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

September Precipitation in Mendi

In Mendi in September, the total precipitation amount is 684 mm (26.9 in) spread over 29 days.

September Precipitation Trends in Mendi

The chart displays monthly precipitation patterns in Mendi, 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 Mendi, September typically receives around 684 mm (26.9 inches) of precipitation spread over approximately 29 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Mendi

In Mendi in September, humidity is 84%. With an average temperature of 16°C (62°F), this humidity feels like a warm blanket wrapping around you, making outdoor activities a bit sticky, but with the right gear, you can still explore comfortably.

September Average Humidity in Mendi

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

In Mendi in September, the maximum UV index is 16, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, making it crucial to take protective measures. For detailed information, you can refer to the Hourly UV Index in Mendi.

Maximum UV Index Levels in Mendi for September

The chart shows the monthly maximum UV Index (UVI) for Mendi 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 Mendi typically reaches 16, which falls under the extreme exposure category.

Data source: Mendi 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 Mendi Compares to Other Months

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

This table compares monthly weather conditions in Mendi, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	17°C (63°F)	509 mm (20.1 inches)	90%	extreme
February Weather	17°C (63°F)	345 mm (13.6 inches)	90%	extreme
March Weather	17°C (63°F)	587 mm (23.1 inches)	91%	extreme
April Weather	17°C (63°F)	634 mm (25.0 inches)	91%	extreme
May Weather	17°C (63°F)	676 mm (26.6 inches)	91%	extreme
June Weather	16°C (62°F)	505 mm (19.9 inches)	91%	extreme
July Weather	16°C (61°F)	449 mm (17.7 inches)	91%	extreme
August Weather	16°C (61°F)	538 mm (21.2 inches)	88%	extreme
September Weather	16°C (62°F)	684 mm (26.9 inches)	84%	extreme
October Weather	17°C (62°F)	654 mm (25.8 inches)	85%	extreme
November Weather	17°C (63°F)	481 mm (18.9 inches)	89%	extreme
December Weather	17°C (63°F)	429 mm (16.9 inches)	90%	extreme