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September Weather in Sandnes, Norway

Last updated: August 27, 2025

In September, the average temperature in Sandnes, Norway hovers around 13°C (56°F), with a minimum of 6°C (43°F) and a peak of 20°C (68°F). Expect 227 mm (8.9 in) of precipitation spread across approximately 18 days, making for a notably humid atmosphere with an average humidity of 90%.

September Temperature in Sandnes

In September in Sandnes, the average temperature is 13°C (56°F). Maximums can reach 20°C (68°F), while minimums can be as low as 6°C (43°F). This pleasant climate makes it an ideal time for travelers to explore the area comfortably.

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

The chart illustrates September temperature patterns in Sandnes, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sandnes, September typically has an average temperature of 13°C (56°F), with highs reaching up to 20°C (68°F) and lows dropping to around 6°C (43°F).
JanFebMarAprMayJunJulAugSepOctNovDec393739434956585955504540
Data source: Temperature data for Sandnes generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Sandnes

In Sandnes in September, the precipitation amount is 227 mm (8.9 in) accumulated over 18 days.

September Precipitation Trends in Sandnes

The chart displays monthly precipitation patterns in Sandnes, 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 Sandnes, September typically receives around 227 mm (8.9 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec1551571437582112125193227315228202
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sandnes

In Sandnes in September, humidity is 90%. With an average temperature of 13°C (56°F), this humidity feels like a moist blanket enveloping you, making every step sticky and muggy, and forcing you to take frequent breaks in the shade as you explore the scenery.

September Average Humidity in Sandnes

This chart illustrates the average monthly humidity levels in Sandnes, 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 Sandnes is approximately 90%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%90%90%87%84%81%86%87%90%92%93%91%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sandnes

In Sandnes 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 Sandnes for better planning.

Maximum UV Index Levels in Sandnes for September

The chart shows the monthly maximum UV Index (UVI) for Sandnes 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 Sandnes typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec113467754211
Data source: Sandnes 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 Sandnes Compares to Other Months

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

This table compares monthly weather conditions in Sandnes, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)155 mm (6.1 inches)92%low
February Weather3°C (37°F)157 mm (6.2 inches)90%low
March Weather4°C (39°F)143 mm (5.6 inches)90%moderate
April Weather6°C (43°F)75 mm (3.0 inches)87%moderate
May Weather9°C (49°F)82 mm (3.2 inches)84%high
June Weather13°C (56°F)112 mm (4.4 inches)81%high
July Weather15°C (58°F)124 mm (4.9 inches)86%high
August Weather15°C (60°F)193 mm (7.6 inches)87%moderate
September Weather13°C (56°F)227 mm (8.9 inches)90%moderate
October Weather10°C (50°F)314 mm (12.4 inches)92%low
November Weather7°C (45°F)228 mm (9.0 inches)93%low
December Weather5°C (41°F)202 mm (8.0 inches)90%low

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