September Weather in Hella, Iceland

Last updated: August 23, 2025

In September, the average temperature in Hella, Iceland is a cool 9°C (49°F). Temperatures can dip to a chilly -1°C (31°F) at night and reach a pleasant 16°C (62°F) during the day. Expect frequent rain, with a total precipitation of 196 mm (7.7 in) spread over 22 days. The air feels quite damp, with an average humidity of 87%—perfect for cozy indoor activities!

September Temperature in Hella

In September in Hella, the average temperature is 9°C (49°F). Maximum temperatures can reach 16°C (62°F), while minimums can drop to as low as -1°C (31°F). Be prepared for a range of temperatures and pack accordingly to enjoy your travels!

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

The chart illustrates September temperature patterns in Hella, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hella, September typically has an average temperature of 9°C (49°F), with highs reaching up to 16°C (62°F) and lows dropping to around -1°C (31°F).

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

September Precipitation in Hella

In Hella in September, the total precipitation amount is 196 mm (7.7 in) over the course of 22 days.

September Precipitation Trends in Hella

The chart displays monthly precipitation patterns in Hella, 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 Hella, September typically receives around 196 mm (7.7 inches) of precipitation spread over approximately 22 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 Hella

In Hella in September humidity is 87%. With an average temperature of 9°C (49°F), this humidity feels like a damp blanket wrapping around you, making travel uncomfortable and leaving you yearning for a dry breeze to refresh your spirit.

September Average Humidity in Hella

This chart illustrates the average monthly humidity levels in Hella, 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 Hella is approximately 87%, 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 Hella

In Hella in September, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Hella, you can check the information here.

Maximum UV Index Levels in Hella for September

The chart shows the monthly maximum UV Index (UVI) for Hella 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 Hella typically reaches 3, which falls under the moderate exposure category.

Data source: Hella 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 Hella Compares to Other Months

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

This table compares monthly weather conditions in Hella, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	2°C (35°F)	147 mm (5.8 inches)	84%	low
February Weather	2°C (36°F)	169 mm (6.6 inches)	82%	low
March Weather	3°C (37°F)	133 mm (5.2 inches)	85%	low
April Weather	5°C (42°F)	133 mm (5.3 inches)	81%	moderate
May Weather	7°C (46°F)	127 mm (5.0 inches)	83%	moderate
June Weather	10°C (51°F)	95 mm (3.8 inches)	82%	high
July Weather	12°C (54°F)	91 mm (3.6 inches)	86%	high
August Weather	12°C (54°F)	98 mm (3.8 inches)	87%	moderate
September Weather	9°C (49°F)	196 mm (7.7 inches)	87%	moderate
October Weather	6°C (43°F)	118 mm (4.6 inches)	88%	low
November Weather	3°C (37°F)	140 mm (5.5 inches)	85%	low
December Weather	2°C (36°F)	147 mm (5.8 inches)	84%	low