September Weather in Oystese, Norway

Last updated: August 27, 2025

In September, the average temperature in Oystese, Norway hovers around 9°C (49°F). Temperatures can dip as low as 1°C (34°F) and soar up to 20°C (69°F). Expect significant rainfall, with an average precipitation of 287 mm (11.3 in) spread over 19 days. The air is quite moist, with an average humidity level of 93%, making it a truly distinctive month!

September Temperature in Oystese

In September in Oystese, the average temperature is 9°C (49°F). Maximum temperatures can reach 20°C (69°F), while the minimum can drop as low as 1°C (34°F). It's advisable to pack layers to be prepared for varying conditions during your travels.

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

The chart illustrates September temperature patterns in Oystese, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Oystese, September typically has an average temperature of 9°C (49°F), with highs reaching up to 20°C (69°F) and lows dropping to around 1°C (34°F).

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

September Precipitation in Oystese

In Oystese in September, the total precipitation amount reaches 287 mm (11.3 in) over the course of 19 days.

September Precipitation Trends in Oystese

The chart displays monthly precipitation patterns in Oystese, 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 Oystese, September typically receives around 287 mm (11.3 inches) of precipitation spread over approximately 19 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 Oystese

In Oystese in September, humidity is 93%. With an average temperature of 9°C (49°F), this humidity feels like a dense, damp blanket enveloping you, making traveling quite uncomfortable as you navigate through the heavy, moist air.

September Average Humidity in Oystese

This chart illustrates the average monthly humidity levels in Oystese, 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 Oystese is approximately 93%, 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 Oystese

In Oystese in September, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Oystese for better planning.

Maximum UV Index Levels in Oystese for September

The chart shows the monthly maximum UV Index (UVI) for Oystese 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 Oystese typically reaches 4, which falls under the moderate exposure category.

Data source: Oystese 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 Oystese Compares to Other Months

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

This table compares monthly weather conditions in Oystese, 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 (28°F)	239 mm (9.4 inches)	98%	low
February Weather	-3°C (27°F)	234 mm (9.2 inches)	96%	low
March Weather	-1°C (31°F)	246 mm (9.7 inches)	94%	moderate
April Weather	2°C (35°F)	152 mm (6.0 inches)	89%	moderate
May Weather	6°C (44°F)	94 mm (3.7 inches)	86%	high
June Weather	12°C (54°F)	164 mm (6.4 inches)	83%	high
July Weather	14°C (57°F)	159 mm (6.2 inches)	87%	high
August Weather	12°C (55°F)	200 mm (7.9 inches)	91%	moderate
September Weather	9°C (49°F)	287 mm (11.3 inches)	93%	moderate
October Weather	5°C (41°F)	340 mm (13.4 inches)	95%	low
November Weather	1°C (34°F)	261 mm (10.3 inches)	97%	low
December Weather	-1°C (30°F)	270 mm (10.6 inches)	97%	low