August could be a good time to visit Reykjavik, as the weather is generally fine. The average high temperature is around +57°F, and there are typically 3 sunny days in August. However, expect about 20 rainy days, and total monthly rainfall of approximately 87 mm. The weather is changeable so pack for every eventuality. Search flightsin one click on Avionero.
Good to know:
August is usually the hottest month of the year in Reykjavik;
August is usually the wettest month of the year in Reykjavik;
Average weather
☀️
+57°F
Avg. max. temperature
+36°F
Min.
+75°F
Max.
87 mm
Total precipitation
79%
Avg. humidity
3 m/s
Avg. wind
3 ☀️
Sunny Days
8 ⛅️
Cloudy
20 🌦
Rainy
Our opinion: Reykjavik has OK weather in August.
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Average temperature in Reykjavik in August
Here are the expected maximum, average and minimum temperatures in Reykjavik for August based on the historical data.
Last Year
Historical Data
The expected average maximum temperature in August is +59°F with a maximum of +66°F and a minimum of +43°F.
The average maximum temperature goes down 23% by the end of the month, compared with the beginning of the month, from +59°F to +54°F.
Is Reykjavik warm or cold in August?
Reykjavik is typically mild in August.
Maximum temperatures go up compared to the previous month from +57°F to +57°F. The minimum temperature also goes up from +48°F to +48°F.
Pack a light jacket as it will be warm in the day and cool in the evenings.
August is the hottest month in Reykjavik, here is the comparison with other months:
Water temperature in Reykjavik in August
Water in Reykjavik in August is Cold. It varies from +50°F to +55°F, with an average of +52°F.This is almost similar to the air temperature, which averages +57°F.
The water temperature in August is one of the warmest of the entire year:
The warmest water temperatures in Reykjavik are reached in July, when the average sea temperature rises to +53°F. The coldest water temperatures are in March, with an average of +41°F.
Can you swim in Reykjavik in August?
We would not recommend swimming in Reykjavik in August, the water is very cold (+52°F on average). Consider swimming only if you are an experienced cold-water swimmer with proper gear.
🦭
Cold
Below +61°F
🏄♂️
Fresh
61°F - 70°F
🏊
Comfortable
70°F - 77°F
👙
Warm
77°F - 82°F
🔥
Very warm
+82°C and up
You will need a full-body wetsuit, cap, gloves, a warm change of clothes, and a hot drink ready for after your swim.
Climate in Reykjavik in August
Reykjavik weather looks like this, on average, in August and the surrounding months.
July
August
September
Avg. temperature
+57°F
+57°F
+52°F
Min. temperature
+37°F
+36°F
+27°F
Max. temperature
+77°F
+75°F
+64°F
Rainfall
70 mm
87 mm
98 mm
Wind
3 m/s
3 m/s
4 m/s
Avg. water temperature
+53°F
+52°F
+49°F
Humidity
78%
79%
78%
Air pressure
1008 HPa
1007 HPa
1004 HPa
Sunny days
2
3
3
Cloudy days
9
8
7
Rainy days
20
20
20
Snowy days
0
0
0
August weather is still as ok as in July.The temperature levels stay the same in the area of +57°F for average maximum temperature during the day.Prepare for more rain. Average rainfall goes from 70 mm to 87 mm.Humidity rises from 78% to 79%.The average wind speed doesn’t change much during August, staying around 3 m/s.The good news is there are likely to be more sunny days in August, from 2 to 3.
September brings much the same weather, it remains ok.
Wind speed in Reykjavik in August based on historical data.
Last Year
Historical Data
The average wind speed is 3 m/s getting up to 5 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Reykjavik is gradually increasing during August, going from 2 m/s to 3 m/s over the course of the month.
Rain
Amount of rainfall in mm during August in Reykjavik based on historical data.
Last Year
Historical Data
Total precipitation in August is about 69 mm, with a 39% chance of rain on a typical day. The maximum amount of rainfall per day is around 13 mm, which is considered light rain.August is a pretty wet month with over 12 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
August is one of the rainiest months in Reykjavik, here is a comparison with other months, total mm:
Reykjavik wettest month is September, where a typical day has a 67% chance of precipitation and 98 mm of rainfall per day. March, on the other hand, is the driest month with a mere 26% chance of precipitation and 65 mm of rainfall per day.
How was the weather last August in Reykjavik?
This is the weather in Reykjavik in August 2023:
1 August
☁️
+59°F
2 August
☀️
+61°F
3 August
☁️
+57°F
4 August
☁️
+56°F
5 August
🌧️
+57°F
6 August
🌧️
+55°F
7 August
🌧️
+57°F
8 August
🌧️
+57°F
9 August
☀️
+63°F
10 August
☀️
+63°F
11 August
☀️
+65°F
12 August
☀️
+62°F
13 August
☀️
+62°F
14 August
☀️
+60°F
15 August
☁️
+57°F
16 August
☁️
+57°F
17 August
🌧️
+57°F
18 August
🌧️
+62°F
19 August
☀️
+61°F
20 August
☀️
+66°F
21 August
☀️
+57°F
22 August
☀️
+61°F
23 August
☀️
+60°F
24 August
☀️
+62°F
25 August
☀️
+62°F
26 August
🌧️
+58°F
27 August
☁️
+57°F
28 August
🌧️
+57°F
29 August
☀️
+58°F
30 August
☁️
+55°F
31 August
☁️
+54°F
In August 2023 Reykjavik had 15 sunny days, 8 cloudy days, and 8 rainy days. The average maximum temperature was +59°F, with an absolute maximum of +66°F and a minimum of +54°F. The average humidity was 82%, with a maximum of 99% and a minimum of 50%. The average wind speed was 3 m/s, with a maximum of 10 m/s and a minimum of 0 m/s.
Are you planning a trip in August?
Climate Change Over the Years
This is how Reykjavik climate has changed over the last 43 years.
The climate in Reykjavik in August has not changed that much over the last 43 years.
The average temperature was the lowest in 1979 (+42°F) and the highest in 2003 (+48°F). The driest year was 2019 with only 289 mm of rainfall, and the wettest year was 2003 with 1379 mm.
FAQ
Frequently asked questions about the weather in Reykjavik in August:
Is August a good time to visit Reykjavik?
It’s always a good time to visit Reykjavik, but the weather is changeable in August, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.
Can you sunbathe in Reykjavik in August?
August has mild temperatures in Reykjavik. Not ideal for sunbathing, but still good for daytime outdoor activities, but plan for cool evenings. Pack a light jacket and shorts!
Can you swim in Reykjavik in August?
Swimming in Reykjavik in August is challenging and not recommended for inexperienced swimmers or without proper equipment and preparation.
Is Reykjavik rainy in August?
Reykjavik is often rainy in August. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.
Is it sunny in Reykjavik in August?
Usually, it’s not very sunny in Reykjavik in August, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.
For this page, we’ve looked at the typical weather in Reykjavik, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
