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September Weather in Olafsfjoerdur, Iceland

Last updated: August 23, 2025

In September, the average temperature in Olafsfjoerdur, Iceland hovers around 6°C (43°F), with minimums dipping to -4°C (25°F) and reaching maximums of 16°C (62°F). Expect a wet month with 190 mm (7.5 in) of precipitation spread over 21 days, and prepare for significant humidity at an average of 96%.

September Temperature in Olafsfjoerdur

In September in Olafsfjoerdur, the average temperature is 6°C (43°F). The maximum can reach 16°C (62°F), and the minimum can be as low as -4°C (25°F). It's a great time to visit if you enjoy a crisp, chilly atmosphere and want to experience the beauty of Olafsfjoerdur during the transition into spring.

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

The chart illustrates September temperature patterns in Olafsfjoerdur, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Olafsfjoerdur, September typically has an average temperature of 6°C (43°F), with highs reaching up to 16°C (62°F) and lows dropping to around -4°C (25°F).
JanFebMarAprMayJunJulAugSepOctNovDec282829323744484843353029
Data source: Temperature data for Olafsfjoerdur 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 Olafsfjoerdur

In Olafsfjoerdur in September, the total precipitation amount is 190 mm (7.5 in) over the course of 21 days.

September Precipitation Trends in Olafsfjoerdur

The chart displays monthly precipitation patterns in Olafsfjoerdur, 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 Olafsfjoerdur, September typically receives around 190 mm (7.5 inches) of precipitation spread over approximately 21 days.
JanFebMarAprMayJunJulAugSepOctNovDec126123115817095105109190171137163
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Olafsfjoerdur

In Olafsfjoerdur in September, humidity is 96%. With an average temperature of 6°C (43°F), this humidity feels like a cold, damp blanket enveloping you, making travel uncomfortable and requiring extra layers to combat the chill while navigating the moist air.

September Average Humidity in Olafsfjoerdur

This chart illustrates the average monthly humidity levels in Olafsfjoerdur, 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 Olafsfjoerdur is approximately 96%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec96%96%95%90%88%89%95%96%96%96%96%96%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Olafsfjoerdur

In Olafsfjoerdur 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 Olafsfjoerdur, you can check the information here.

Maximum UV Index Levels in Olafsfjoerdur for September

The chart shows the monthly maximum UV Index (UVI) for Olafsfjoerdur 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 Olafsfjoerdur typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec112456543211
Data source: Olafsfjoerdur 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 Olafsfjoerdur Compares to Other Months

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

This table compares monthly weather conditions in Olafsfjoerdur, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (28°F)126 mm (5.0 inches)96%low
February Weather-2°C (28°F)122 mm (4.8 inches)96%low
March Weather-2°C (29°F)115 mm (4.5 inches)95%low
April Weather0°C (33°F)81 mm (3.2 inches)90%moderate
May Weather3°C (37°F)70 mm (2.8 inches)88%moderate
June Weather7°C (44°F)95 mm (3.7 inches)89%high
July Weather9°C (49°F)105 mm (4.1 inches)95%moderate
August Weather9°C (48°F)109 mm (4.3 inches)95%moderate
September Weather6°C (43°F)190 mm (7.5 inches)96%moderate
October Weather2°C (36°F)171 mm (6.7 inches)96%low
November Weather-1°C (30°F)137 mm (5.4 inches)96%low
December Weather-2°C (29°F)163 mm (6.4 inches)96%low

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