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September Weather in Dalvik, Iceland

Last updated: August 23, 2025

In September, the average temperature in Dalvik, Iceland hovers around 6°C (43°F), with a chilly minimum of -4°C (25°F) and a warmer maximum of 17°C (62°F). Expect the skies to be quite wet, with 191 mm (7.5 in) of precipitation spread over 21 days, leading to a notably high average humidity of 96%. Be sure to prepare for these damp and cool conditions!

September Temperature in Dalvik

In September in Dalvik, the average temperature is 6°C (43°F). Maximums can reach 17°C (62°F) and minimums can be as low as -4°C (25°F). Be prepared for a range of temperatures to ensure a comfortable and enjoyable trip.

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

The chart illustrates September temperature patterns in Dalvik, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Dalvik, September typically has an average temperature of 6°C (43°F), with highs reaching up to 17°C (62°F) and lows dropping to around -4°C (25°F).
JanFebMarAprMayJunJulAugSepOctNovDec282828323744484843352929
Data source: Temperature data for Dalvik 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 Dalvik

In Dalvik in September, the precipitation amount is 191 mm (7.5 in) during a span of 21 days.

September Precipitation Trends in Dalvik

The chart displays monthly precipitation patterns in Dalvik, 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 Dalvik, September typically receives around 191 mm (7.5 inches) of precipitation spread over approximately 21 days.
JanFebMarAprMayJunJulAugSepOctNovDec130125119827197107112191179144170
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Dalvik

In Dalvik 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 Dalvik

This chart illustrates the average monthly humidity levels in Dalvik, 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 Dalvik 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 Dalvik

In Dalvik 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 Dalvik, you can check the information here.

Maximum UV Index Levels in Dalvik for September

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

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

This table compares monthly weather conditions in Dalvik, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (28°F)130 mm (5.1 inches)96%low
February Weather-2°C (28°F)125 mm (4.9 inches)96%low
March Weather-2°C (29°F)119 mm (4.7 inches)95%low
April Weather0°C (33°F)82 mm (3.2 inches)90%moderate
May Weather3°C (37°F)71 mm (2.8 inches)88%moderate
June Weather7°C (44°F)97 mm (3.8 inches)89%high
July Weather9°C (49°F)107 mm (4.2 inches)95%moderate
August Weather9°C (48°F)112 mm (4.4 inches)95%moderate
September Weather6°C (43°F)191 mm (7.5 inches)96%moderate
October Weather2°C (36°F)179 mm (7.0 inches)96%low
November Weather-1°C (30°F)144 mm (5.7 inches)96%low
December Weather-2°C (29°F)170 mm (6.7 inches)96%low

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