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September Weather in Neskaupstadur, Iceland

Last updated: August 23, 2025

In September, the average temperature in Neskaupstadur, Iceland hovers around 8°C (46°F), with a minimum dipping to -2°C (29°F) and a maximum reaching up to 20°C (67°F). Expect 132 mm (5.2 in) of precipitation spread across 18 days, contributing to a remarkably high average humidity of 90%. Prepare for a cozy, albeit damp, experience!

September Temperature in Neskaupstadur

In September in Neskaupstadur, the average temperature is 8°C (46°F). The maximum can reach 20°C (67°F), while the minimum can dip as low as -2°C (29°F). This range makes it advisable for travelers to pack layers to accommodate changing conditions throughout the day.

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

The chart illustrates September temperature patterns in Neskaupstadur, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Neskaupstadur, September typically has an average temperature of 8°C (46°F), with highs reaching up to 20°C (67°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec283031354046514946393229
Data source: Temperature data for Neskaupstadur 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 Neskaupstadur

In Neskaupstadur in September, the precipitation amount is 132 mm (5.2 in) over the course of 18 days.

September Precipitation Trends in Neskaupstadur

The chart displays monthly precipitation patterns in Neskaupstadur, 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 Neskaupstadur, September typically receives around 132 mm (5.2 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec1191721438180966876132192133191
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Neskaupstadur

In Neskaupstadur in September, humidity is 90%. With an average temperature of 8°C (46°F), this humidity feels like a damp chill that clings to your skin, making it essential to dress in layers and stay dry while exploring the sights.

September Average Humidity in Neskaupstadur

This chart illustrates the average monthly humidity levels in Neskaupstadur, 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 Neskaupstadur is approximately 90%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%85%87%86%88%90%93%91%90%90%88%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Neskaupstadur

In Neskaupstadur 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 Neskaupstadur, you can check the information here.

Maximum UV Index Levels in Neskaupstadur for September

The chart shows the monthly maximum UV Index (UVI) for Neskaupstadur 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 Neskaupstadur typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec112356543211
Data source: Neskaupstadur 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 Neskaupstadur Compares to Other Months

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

This table compares monthly weather conditions in Neskaupstadur, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)119 mm (4.7 inches)84%low
February Weather-1°C (30°F)172 mm (6.8 inches)85%low
March Weather0°C (32°F)143 mm (5.6 inches)87%low
April Weather2°C (35°F)81 mm (3.2 inches)86%moderate
May Weather4°C (40°F)80 mm (3.2 inches)88%moderate
June Weather8°C (47°F)96 mm (3.8 inches)90%high
July Weather10°C (51°F)68 mm (2.7 inches)93%moderate
August Weather10°C (50°F)76 mm (3.0 inches)91%moderate
September Weather8°C (46°F)132 mm (5.2 inches)90%moderate
October Weather4°C (39°F)192 mm (7.6 inches)90%low
November Weather0°C (33°F)133 mm (5.2 inches)88%low
December Weather-1°C (30°F)191 mm (7.5 inches)85%low

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