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September Weather in Hvolsvoellur, Iceland

Last updated: August 23, 2025

In September, the average temperature in Hvolsvoellur, Iceland hovers around 9°C (48°F), with a minimum dipping to -2°C (29°F) and a maximum reaching 16°C (61°F). Expect a fair share of rain, with 194 mm (7.6 in) of precipitation spread over 22 days. Additionally, humidity levels are high, averaging at 87%, creating a brisk atmosphere that's both refreshing and invigorating.

September Temperature in Hvolsvoellur

In September in Hvolsvoellur, the average temperature is 9°C (48°F), with maximums potentially reaching 16°C (61°F) and minimums dropping as low as -2°C (29°F). Be prepared for chilly weather and pack layers if you plan to visit during this time.

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

The chart illustrates September temperature patterns in Hvolsvoellur, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hvolsvoellur, September typically has an average temperature of 9°C (48°F), with highs reaching up to 16°C (61°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec343435404450535248423634
Data source: Temperature data for Hvolsvoellur 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 Hvolsvoellur

In Hvolsvoellur in September, the total precipitation amount is 194 mm (7.6 in) spread over 22 days.

September Precipitation Trends in Hvolsvoellur

The chart displays monthly precipitation patterns in Hvolsvoellur, 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 Hvolsvoellur, September typically receives around 194 mm (7.6 inches) of precipitation spread over approximately 22 days.
JanFebMarAprMayJunJulAugSepOctNovDec1531821381321269892100194123149154
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Hvolsvoellur

In Hvolsvoellur in September humidity is 87%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration uncomfortable and requiring extra layers and careful planning for any activities.

September Average Humidity in Hvolsvoellur

This chart illustrates the average monthly humidity levels in Hvolsvoellur, 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 Hvolsvoellur is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%85%81%83%82%86%87%87%88%85%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Hvolsvoellur

In Hvolsvoellur 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 Hvolsvoellur, you can check the information here.

Maximum UV Index Levels in Hvolsvoellur for September

The chart shows the monthly maximum UV Index (UVI) for Hvolsvoellur 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 Hvolsvoellur typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec112356643211
Data source: Hvolsvoellur 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 Hvolsvoellur Compares to Other Months

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

This table compares monthly weather conditions in Hvolsvoellur, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)153 mm (6.0 inches)84%low
February Weather1°C (35°F)182 mm (7.2 inches)82%low
March Weather2°C (36°F)138 mm (5.4 inches)85%low
April Weather4°C (40°F)132 mm (5.2 inches)81%moderate
May Weather7°C (45°F)126 mm (5.0 inches)83%moderate
June Weather10°C (50°F)98 mm (3.9 inches)82%high
July Weather12°C (53°F)92 mm (3.6 inches)86%high
August Weather11°C (53°F)100 mm (3.9 inches)87%moderate
September Weather9°C (48°F)194 mm (7.6 inches)87%moderate
October Weather5°C (42°F)123 mm (4.9 inches)88%low
November Weather2°C (36°F)149 mm (5.9 inches)85%low
December Weather1°C (34°F)154 mm (6.1 inches)84%low

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