South Iceland Weather in September

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

Are you planning a trip a to South Iceland, Iceland in September and wondering what kind of weather to expect? This page has all the details you need.

What to Expect in South Iceland in September

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

Temperatures

The average maximum daytime temperatures vary from cold in Hali at 9°C (48°F) to mild in Hella at 13°C (55°F). Nighttime temperatures generally drop to 7°C (45°F) in Hella and 4°C (39°F) in Hali.

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

Precipitation

In September, precipitation varies across different areas. From high rainfall in Sprengisandur with an average of 129 mm (5.1 in) to heavy rainfall in Solheimahjaleiga with 299 mm (12 in).

Average sunshine

Most places get a reasonable amount of sunshine. Take Höfn as an example - it receives around 114 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 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 September

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 September for some of the most popular destinations in South Iceland, Iceland?

Temperature range in South Iceland (September)

Precipitation variation in South Iceland (September)

Höfn

In September Höfn generally has low temperatures with maximum daytime temperatures around 10°C (50°F), minimum nighttime temperatures around 6°C (43°F) and heavy monthly rainfall. So on average the conditions are less favorable that month.

August
September
October
Max temperature
12°C (54°F)
10°C (50°F)
7°C (45°F)
Min temperature
8°C (46°F)
6°C (43°F)
3°C (37°F)
Monthly sun hours
130 hours
114 hours
78 hours
Monthly rainfall
152 mm (6 in)
227 mm (8.9 in)
237 mm (9.3 in)
Monthly rainy days
16 days
16 days
17 days
Weather conditions

Selfoss

In September Selfoss generally has moderate temperatures with maximum daytime temperatures around 12°C (54°F), minimum nighttime temperatures around 7°C (45°F) and heavy monthly rainfall. So on average the conditions are less favorable that month.

August
September
October
Max temperature
15°C (59°F)
12°C (54°F)
8°C (46°F)
Min temperature
9°C (48°F)
7°C (45°F)
3°C (37°F)
Monthly sun hours
154 hours
121 hours
92 hours
Monthly rainfall
124 mm (4.9 in)
177 mm (7 in)
151 mm (5.9 in)
Monthly rainy days
18 days
18 days
19 days
Weather conditions

Hella

In September Hella generally has moderate temperatures with maximum daytime temperatures around 13°C (55°F), minimum nighttime temperatures around 7°C (45°F) and heavy monthly rainfall. So on average the conditions are less favorable that month.

August
September
October
Max temperature
16°C (61°F)
13°C (55°F)
9°C (48°F)
Min temperature
9°C (48°F)
7°C (45°F)
3°C (37°F)
Monthly rainfall
124 mm (4.9 in)
175 mm (6.9 in)
149 mm (5.9 in)
Monthly rainy days
18 days
17 days
18 days
Weather conditions

Hveragerði

In September Hveragerði generally has moderate temperatures with maximum daytime temperatures around 12°C (54°F), minimum nighttime temperatures around 6°C (43°F) and heavy monthly rainfall. So on average the conditions are less favorable that month.

August
September
October
Max temperature
15°C (59°F)
12°C (54°F)
8°C (46°F)
Min temperature
9°C (48°F)
6°C (43°F)
2°C (36°F)
Monthly sun hours
154 hours
121 hours
92 hours
Monthly rainfall
124 mm (4.9 in)
172 mm (6.8 in)
143 mm (5.6 in)
Monthly rainy days
18 days
18 days
19 days
Weather conditions

Laugarvatn

In September Laugarvatn generally has low temperatures with maximum daytime temperatures around 11°C (52°F), minimum nighttime temperatures around 5°C (41°F) and heavy monthly rainfall. So on average the conditions are less favorable that month.

August
September
October
Max temperature
14°C (57°F)
11°C (52°F)
7°C (45°F)
Min temperature
8°C (46°F)
5°C (41°F)
1°C (34°F)
Monthly sun hours
154 hours
121 hours
92 hours
Monthly rainfall
140 mm (5.5 in)
194 mm (7.6 in)
163 mm (6.4 in)
Monthly rainy days
18 days
17 days
18 days
Weather conditions

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

Popular cities in September

Day & night temperatures, rainfall and average weather in South Iceland in September.

City Weather Day temp Night temp Rainfall
Vík í Mýrdal 10°C (50°F) 7°C (45°F) 270 mm (11 in)
Höfn 10°C (50°F) 6°C (43°F) 227 mm (8.9 in)
Selfoss 12°C (54°F) 7°C (45°F) 177 mm (7 in)
Hella 13°C (55°F) 7°C (45°F) 175 mm (6.9 in)
Hveragerði 12°C (54°F) 6°C (43°F) 172 mm (6.8 in)
Laugarvatn 11°C (52°F) 5°C (41°F) 194 mm (7.6 in)

South Iceland weather in September: frequently asked questions

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

South Iceland, Iceland typically experiences less favorable weather in September, part of the season. Daytime highs in Höfn average around 10°C (50°F), and temperatures drop to about 6°C (43°F) at night.

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

Höfn averages a daytime maximum of 10°C (50°F) in September, with overnight lows close to 6°C (43°F).

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

Yes. September brings heavy rainfall to South Iceland, Iceland, with Höfn averaging around 227 mm (8.9 in). Expect frequent showers and pack accordingly.

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

In our view, September might not be the best time to travel to South Iceland, Iceland with often less favorable weather in Höfn.

Generally speaking, the best visiting conditions can be found in offering mostly less favorable 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.

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