South Iceland Weather in August

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

Planning a trip to South Iceland, Iceland this August? Here's what you need to know about the weather:

What to Expect in South Iceland in August

South Iceland, Iceland is a region in Iceland. August in South Iceland generally has temperatures that range from cold to mild, with precipitation levels ranging from moderate to heavy.

Temperatures

Based on our climate data spanning from 1990-2020, the average maximum temperature is cold in Solheimahjaleiga at 11°C (52°F) to mild in Hella at 16°C (61°F). Nighttime temperatures generally drop to 9°C (48°F) in Hella and 7°C (45°F) in Solheimahjaleiga.

For a closer look at conditions across South Iceland, Iceland, refer to the map below.

Precipitation

In August, precipitation varies across different areas. From moderate rainfall in Sprengisandur with an average of 96 mm (3.8 in) to heavy rainfall in Solheimahjaleiga with 196 mm (7.7 in).

Average sunshine

Sunshine is fairly consistent across many areas. Höfn receives about 130 hours of sunlight in August, providing a good balance between sunny spells and cloud cover. If you're after more sunshine hours, take a look at our weather planner for other sun-rich destinations worldwide.

Explore South Iceland by month

Pick a month to see the average temperature, rainfall and sunshine in South Iceland — and find the best time to visit. (based on Vík í Mýrdal)

Best Places to Visit in South Iceland in August

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

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 South Iceland

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

Temperature range in South Iceland (August)

Precipitation variation in South Iceland (August)

Höfn

In August Höfn generally has moderate temperatures with maximum daytime temperatures around 12°C (54°F), minimum nighttime temperatures around 8°C (46°F) and high monthly rainfall. So on average the conditions are poor that month.

July
August
September
Max temperature
12°C (54°F)
12°C (54°F)
10°C (50°F)
Min temperature
8°C (46°F)
8°C (46°F)
6°C (43°F)
Monthly sun hours
141 hours
130 hours
114 hours
Monthly rainfall
119 mm (4.7 in)
152 mm (6 in)
227 mm (8.9 in)
Monthly rainy days
15 days
16 days
16 days
Weather conditions

Selfoss

In August Selfoss 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
Max temperature
15°C (59°F)
15°C (59°F)
12°C (54°F)
Min temperature
10°C (50°F)
9°C (48°F)
7°C (45°F)
Monthly sun hours
168 hours
154 hours
121 hours
Monthly rainfall
99 mm (3.9 in)
124 mm (4.9 in)
177 mm (7 in)
Monthly rainy days
17 days
18 days
18 days
Weather conditions

Hella

In August Hella generally has moderate temperatures with maximum daytime temperatures around 16°C (61°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
Max temperature
16°C (61°F)
16°C (61°F)
13°C (55°F)
Min temperature
10°C (50°F)
9°C (48°F)
7°C (45°F)
Monthly rainfall
106 mm (4.2 in)
124 mm (4.9 in)
175 mm (6.9 in)
Monthly rainy days
17 days
18 days
17 days
Weather conditions

Hveragerði

In August Hveragerði 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
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
102 mm (4 in)
124 mm (4.9 in)
172 mm (6.8 in)
Monthly rainy days
18 days
18 days
18 days
Weather conditions

Laugarvatn

In August Laugarvatn generally has moderate temperatures with maximum daytime temperatures around 14°C (57°F), minimum nighttime temperatures around 8°C (46°F) and high monthly rainfall. So on average the conditions are unpleasant that month.

July
August
September
Max temperature
15°C (59°F)
14°C (57°F)
11°C (52°F)
Min temperature
9°C (48°F)
8°C (46°F)
5°C (41°F)
Monthly sun hours
168 hours
154 hours
121 hours
Monthly rainfall
120 mm (4.7 in)
140 mm (5.5 in)
194 mm (7.6 in)
Monthly rainy days
17 days
18 days
17 days
Weather conditions

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

City Weather Day temp Night temp Rainfall
Vík í Mýrdal 12°C (54°F) 8°C (46°F) 185 mm (7.3 in)
Höfn 12°C (54°F) 8°C (46°F) 152 mm (6 in)
Selfoss 15°C (59°F) 9°C (48°F) 124 mm (4.9 in)
Hella 16°C (61°F) 9°C (48°F) 124 mm (4.9 in)
Hveragerði 15°C (59°F) 9°C (48°F) 124 mm (4.9 in)
Laugarvatn 14°C (57°F) 8°C (46°F) 140 mm (5.5 in)

South Iceland weather in August: frequently asked questions

What is the weather like in South Iceland, Iceland in August?

Expect poor weather across South Iceland, Iceland in August. The popular destination of Höfn averages 12°C (54°F) by day and 8°C (46°F) at night during this month.

What is the average temperature in South Iceland, Iceland in August?

Daytime temperatures in Höfn peak at roughly 12°C (54°F) in August, dropping to about 8°C (46°F) overnight.

Does South Iceland, Iceland get a lot of rain in August?

Yes, August tends to be a wetter month in South Iceland, Iceland. Average rainfall in Höfn sits around 152 mm (6 in).

Is August a Good Time to Visit South Iceland, Iceland?

Given the typically poor weather conditions in Höfn, August may not be the ideal time to visit South Iceland, Iceland.

Generally speaking, provide poor weather in Höfn.

Interested in more climate information?

We have much more information about the climate in South Iceland.

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.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.