Reykjavík

Capital Region Weather in August

Average temperatures, rainfall, sunshine and the best places to visit in Capital Region, Iceland in August.

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Reykjavík Kópavogur Hafnarfjördur Mosfellsbær

Thinking about venturing to Capital Region, Iceland this August and curious about the weather conditions to expect? This page holds all the key information you seek, responding to your question:

What to Expect in Capital Region in August

Capital Region, Iceland is a region in Iceland. August in Capital Region generally has mild temperatures, with high precipitation. The month of August is in the summer season.

Temperatures

You can expect mild maximum daytime temperatures of around 15°C (59°F) and nighttime temperatures around 9°C (48°F) in Reykjavík.

To explore the conditions in Capital Region, Iceland in more detail, check the map below.

Precipitation

In August, precipitation varies across different areas. From high rainfall in Álftanes with an average of 107 mm (4.2 in) to high rainfall in Mosfellsbær with 112 mm (4.4 in).

Average sunshine

Most places get a reasonable amount of sunshine. Take Reykjavík as an example - it receives around 154 hours of sunlight, offering a nice mix of sunny and partly cloudy days. Want to compare this with brighter destinations? Try our weather planner to explore your options.

Explore Capital Region by month

Pick a month to see the average temperature, rainfall and sunshine in Capital Region — and find the best time to visit. (based on Reykjavík)

January3°C (37°F) February3°C (37°F) March4°C (39°F) April7°C (45°F) May11°C (52°F) June14°C (57°F) This monthJuly16°C (61°F) August15°C (59°F) September12°C (54°F) October8°C (46°F) November5°C (41°F) December4°C (39°F)
Best Time to Visit Capital Region →

Best Places to Visit in Capital Region in August

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Capital Region.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Capital Region

What is the weather like in August for some of the most popular destinations in Capital Region, Iceland?

Temperature range in Capital Region (August)

Precipitation variation in Capital Region (August)

Reykjavík

In August Reykjavík generally has moderate temperatures with maximum daytime temperatures around 15°C (59°F), minimum nighttime temperatures around 9°C (48°F) and high monthly rainfall. So on average the conditions are unpleasant that month.

« July
August
September »
July
August
September
Max temperature
16°C (61°F)
15°C (59°F)
12°C (54°F)
Min temperature
9°C (48°F)
9°C (48°F)
6°C (43°F)
Monthly sun hours
168 hours
154 hours
121 hours
Monthly rainfall
92 mm (3.6 in)
109 mm (4.3 in)
145 mm (5.7 in)
Monthly rainy days
17 days
18 days
18 days
Weather conditions
tolerable
unpleasant
poor
Climate in Reykjavík →

Kópavogur

In August Kópavogur generally has moderate temperatures with maximum daytime temperatures around 15°C (59°F), minimum nighttime temperatures around 9°C (48°F) and high monthly rainfall. So on average the conditions are unpleasant that month.

« July
August
September »
July
August
September
Max temperature
16°C (61°F)
15°C (59°F)
12°C (54°F)
Min temperature
9°C (48°F)
9°C (48°F)
6°C (43°F)
Monthly sun hours
168 hours
154 hours
121 hours
Monthly rainfall
93 mm (3.7 in)
111 mm (4.4 in)
146 mm (5.7 in)
Monthly rainy days
18 days
18 days
18 days
Weather conditions
tolerable
unpleasant
poor
Climate in Kópavogur →

Hafnarfjördur

In August Hafnarfjördur generally has moderate temperatures with maximum daytime temperatures around 15°C (59°F), minimum nighttime temperatures around 9°C (48°F) and high monthly rainfall. So on average the conditions are unpleasant that month.

« July
August
September »
July
August
September
Max temperature
16°C (61°F)
15°C (59°F)
12°C (54°F)
Min temperature
9°C (48°F)
9°C (48°F)
6°C (43°F)
Monthly sun hours
168 hours
154 hours
121 hours
Monthly rainfall
93 mm (3.7 in)
111 mm (4.4 in)
146 mm (5.7 in)
Monthly rainy days
18 days
18 days
18 days
Weather conditions
tolerable
unpleasant
poor
Climate in Hafnarfjördur →

Mosfellsbær

In August Mosfellsbær generally has moderate temperatures with maximum daytime temperatures around 15°C (59°F), minimum nighttime temperatures around 9°C (48°F) and high monthly rainfall. So on average the conditions are unpleasant that month.

« July
August
September »
July
August
September
Max temperature
16°C (61°F)
15°C (59°F)
12°C (54°F)
Min temperature
9°C (48°F)
9°C (48°F)
6°C (43°F)
Monthly sun hours
168 hours
154 hours
121 hours
Monthly rainfall
95 mm (3.7 in)
112 mm (4.4 in)
149 mm (5.9 in)
Monthly rainy days
18 days
18 days
18 days
Weather conditions
tolerable
unpleasant
poor
Climate in Mosfellsbær →

Garðabær

In August Garðabær generally has moderate temperatures with maximum daytime temperatures around 15°C (59°F), minimum nighttime temperatures around 9°C (48°F) and high monthly rainfall. So on average the conditions are unpleasant that month.

« July
August
September »
July
August
September
Max temperature
16°C (61°F)
15°C (59°F)
12°C (54°F)
Min temperature
9°C (48°F)
9°C (48°F)
6°C (43°F)
Monthly sun hours
168 hours
154 hours
121 hours
Monthly rainfall
93 mm (3.7 in)
111 mm (4.4 in)
147 mm (5.8 in)
Monthly rainy days
18 days
18 days
18 days
Weather conditions
tolerable
unpleasant
poor
Climate in Garðabær →

Is your destination not in the list? Have a look at all destinations in Capital Region, in Iceland.

In our records: Iceland August extremes

Notable August records observed across cities in Iceland in our climate database (1976 – 2026). Historic readings can vary in quality, so treat these as illustrative.

  • In our records, the warmest August day in Iceland reached 30°C (86°F) in Patreksfjörður on August 29, 2004.

Popular cities in August

Day & night temperatures, rainfall and average weather in Capital Region in August.

City Weather Day temp Night temp Rainfall
Reykjavík 15°C (59°F) 9°C (48°F) 109 mm (4.3 in)
Kópavogur 15°C (59°F) 9°C (48°F) 111 mm (4.4 in)
Hafnarfjördur 15°C (59°F) 9°C (48°F) 111 mm (4.4 in)
Mosfellsbær 15°C (59°F) 9°C (48°F) 112 mm (4.4 in)
Garðabær 15°C (59°F) 9°C (48°F) 111 mm (4.4 in)
Álftanes 15°C (59°F) 9°C (48°F) 107 mm (4.2 in)

Capital Region weather in August: frequently asked questions

What is the weather like in Capital Region, Iceland in August?

August in Capital Region, Iceland brings unpleasant weather. In Reykjavík, daytime temperatures are typically around 15°C (59°F) and nighttime lows hover near 9°C (48°F).

What is the average temperature in Capital Region, Iceland in August?

Reykjavík averages a daytime maximum of 15°C (59°F) in August, with overnight lows close to 9°C (48°F).

Does Capital Region, Iceland get a lot of rain in August?

Yes, August tends to be a wetter month in Capital Region, Iceland. Average rainfall in Reykjavík sits around 109 mm (4.3 in).

Is August a Good Time to Visit Capital Region, Iceland?

Given the typically unpleasant weather conditions in Reykjavík, August may not be the ideal time to visit Capital Region, Iceland.

Generally speaking, June and July provide tolerable weather in Reykjavík. The weather in January, February, March, April, September, October, November and December, on the other hand, tends to be poor.

Interested in more climate information?

We have much more information about the climate in Capital Region.

Weather and climate has detailed information for every country in the world. Are you going to Iceland? Get detailed 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 travel conditions. Find out where to go with our weather planner.

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