August weather forecast
Iceland

August in Iceland signals the gradual transition from summer to autumn. Average temperatures in August range from 10°C (50°F) to 15°C (59°F), slightly lower than in July, indicating the onset of cooler weather. However, the southern and western coastal areas, such as Reykjavik, still experience slightly milder conditions due to the ocean's warming influence.

In August, daylight hours begin to decrease, though the change is gradual. The country still enjoys long daylight hours, with the sun rising around 5 am and setting close to 10 pm at the beginning of the month. By the end of August, daylight hours have reduced to 14, marking the end of the Midnight Sun phenomenon and the approach of darker nights.

Precipitation in August averages between 60mm (2.36") to 70mm (2.76"), slightly higher than the summer's drier months, and it usually falls as rain. Snow is a rare occurrence in August and is generally limited to the highest mountain peaks. With the cooler temperatures and increased rainfall, August can bring more cloud cover and occasional fog, especially in the coastal regions.

Wind conditions in August are similar to those in July, with average speeds around 12km/h (7.5mph). The effect of the wind chill is more noticeable towards the end of the month as temperatures begin to drop, making the air feel cooler than the actual temperature, particularly in exposed areas and during windy conditions.

August is a popular time to visit Iceland, thanks to the lingering mild weather and long daylight hours. It's an excellent month for outdoor activities, including hiking and sightseeing. As the month progresses and nights begin to darken, the chances of viewing the Northern Lights start to increase, particularly in the northern regions of the country. The blend of summer's end and autumn's onset makes August a unique and rewarding time to experience Iceland's stunning landscapes and natural beauty.

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• Reykjavík - August »
  As Reykjavík, Iceland sails into August, the summer heat slightly drops to an average high of 12.8°C (55°F) while the sea temperature remains at a warm 11.3°C (52.3°F). The month with the most sunshine in Reykjavík is August, with an average of 7.4h of sunshine.
• Kópavogur - August »
  On the first day of August in Kópavogur sunrise is at 04:34 and sunset at 22:32. August in Kópavogur maintains the warm and luminous summer weather, highlighted by an inviting sea temperature of 11.3°C (52.3°F).
• Akureyri - August »
  August witnesses a slight decline in maximum temperatures to 10°C (50°F), signalling the end of peak summer in Akureyri. On the first day of August in Akureyri, sunrise is at 04:02 and sunset at 22:35.
• Akranes - August »
  The months with the warmest seawater in Akranes are July and August, with an average sea temperature of 11.3°C (52.3°F). July and August, with an average sea temperature of 11.3°C (52.3°F), are months with the warmest seawater in Akranes, Iceland.
• Selfoss - August »
  On the first day of August in Selfoss sunrise is at 04:32 and sunset at 22:27. In Selfoss, Iceland, during August, the rain falls for 17.1 days and regularly aggregates up to 77mm (3.03") of precipitation.
• Ísafjörður - August »
  Despite this, the alluring mild temperature combined with the breathtaking nature of Ísafjörður keeps August a favorable month for visitation. The transition from July to August in Ísafjörður brings an average high-temperature of a still cool 11.9°C (53.4°F), barely different from July's 12.3°C (54.1°F).
• Vestmannaeyjar - August »
  Vestmannaeyjar, Iceland, experiences temperate weather throughout August as well, with sea temperatures at a comfortable 11.7°C (53.1°F). In Vestmannaeyjar during August, the rain falls for 14.4 days and regularly aggregates up to 140mm (5.51") of precipitation.
• Grindavik - August »
  On the first day of August in Grindavik sunrise is at 04:39 and sunset at 22:32. In Grindavik in August, during 14.5 rainfall days, 59mm (2.32") of precipitation is typically accumulated.
• Seltjarnarnes - August »
  July and August, with an average sea temperature of 11.3°C (52.3°F), are months with the warmest seawater in Seltjarnarnes. On the last day of August, in Seltjarnarnes, sunrise is at 06:07 and sunset at 20:49 GMT.
• Borgarnes - August »
  The month with the most sunshine in Borgarnes is August, with an average of 7.4h of sunshine. The onset of August carries the last vestiges of summer warmth in Borgarnes, with temperatures slightly decreasing from their July peak.