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August Weather in Seltjarnarnes, Iceland

Last updated: August 23, 2025

In August, the average temperature in Seltjarnarnes, Iceland hovers around 11°C (52°F), with a minimum dipping to 5°C (41°F) and a maximum reaching 20°C (68°F). Expect about 83 mm (3.3 in) of precipitation spread over 15 days, all while humidity remains high at an average of 88%.

August Temperature in Seltjarnarnes

In August in Seltjarnarnes, the average temperature is 11°C (52°F). Maximum temperatures can reach 20°C (68°F), while minimums can drop as low as 5°C (41°F). Be sure to pack layers to stay comfortable during your travels!

August Weather in Seltjarnarnes: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Seltjarnarnes, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Seltjarnarnes, August typically has an average temperature of 11°C (52°F), with highs reaching up to 20°C (68°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec323234394449525247413533
Data source: Temperature data for Seltjarnarnes 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.

August Precipitation in Seltjarnarnes

In Seltjarnarnes in August, the precipitation amount is 83 mm (3.3 in) spread over 15 days.

August Precipitation Trends in Seltjarnarnes

The chart displays monthly precipitation patterns in Seltjarnarnes, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Seltjarnarnes, August typically receives around 83 mm (3.3 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec11412510312111392758316496105106
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Seltjarnarnes

In Seltjarnarnes in August, humidity is 88%. With an average temperature of 11°C (52°F), this humidity feels like a heavy blanket wrapping around you, making travel uncomfortable and the air feel thick, encouraging you to seek shelter or stay hydrated as you explore.

August Average Humidity in Seltjarnarnes

This chart illustrates the average monthly humidity levels in Seltjarnarnes, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Seltjarnarnes is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec96%95%94%87%85%81%86%88%92%93%94%95%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Seltjarnarnes

In Seltjarnarnes in August, 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 Seltjarnarnes for better planning.

Maximum UV Index Levels in Seltjarnarnes for August

The chart shows the monthly maximum UV Index (UVI) for Seltjarnarnes in August, 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 August, the maximum UV index in Seltjarnarnes typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec112356643211
Data source: Seltjarnarnes August 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 August Weather in Seltjarnarnes Compares to Other Months

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

This table compares monthly weather conditions in Seltjarnarnes, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)113 mm (4.5 inches)96%low
February Weather0°C (33°F)125 mm (4.9 inches)95%low
March Weather1°C (34°F)103 mm (4.1 inches)94%low
April Weather4°C (40°F)121 mm (4.8 inches)87%moderate
May Weather7°C (44°F)113 mm (4.4 inches)85%moderate
June Weather9°C (49°F)92 mm (3.6 inches)81%high
July Weather11°C (53°F)75 mm (3.0 inches)86%high
August Weather11°C (52°F)83 mm (3.3 inches)88%moderate
September Weather8°C (47°F)164 mm (6.5 inches)92%moderate
October Weather5°C (42°F)96 mm (3.8 inches)93%low
November Weather2°C (35°F)105 mm (4.1 inches)94%low
December Weather0°C (33°F)106 mm (4.2 inches)95%low

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