Reykjavík weather in August (Capital Region, Iceland)

The average maximum daytime temperature in Reykjavík in August lies at 13.0°C (55.4°F). The average minimum temperature goes down to around 7.0°C (44.6°F) (often the minimum temperature is noted at night).

Rainfall during August is moderate with an average of 75mm (2.9 inches). There are generally around 18 rainy days. The sun will show itself now and again, with 154 hours of sunshine during the entire month.


Reykjavík, monthly averages in August

Show in Fahrenheit
Min Temperature 7 °C  
Max Temperature 13 °C  
Water Temperature 11 °C *  
Chance of Rain 61%  
Precipitation 74mm  
Rainy days 18 days  
Humidity 81% *  
Sunshine 154 hrs *  
Percentage Sunshine 31% *  

Where to stay in Reykjavík

Where to go in Iceland in August

Find out more about the weather in Iceland in August and which places have the best weather conditions in this month.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20-29ºC / 68-84ºF and not too much precipitation (less than 90mm / 3.5inches a month).

So what to wear in August? Bring a rain jacket in case it rains during your stay. It’s not quite the end of sweater weather, so don’t pack your knits away yet. But you could for example swap a turtleneck for a button down shirt in this month. At night it tends to cool off so best to pack some warm nightwear as well. With a water temperature of around 11.0°C (51.8°F), there is no need to bring your swimwear.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in August.

Outdoor sports

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Reykjavík.

Our site offers climate and forecast data for every country in the world. Are you going to Iceland? On this website you can find historical weather averages for many cities in Iceland. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.