Akranes Weather in September
Akranes in September sees low temperatures, with highs around 12°C (54°F) and overnight lows of 7°C (45°F). Rainfall is fairly high at around 143 mm (5.6 in) on average, so pack waterproofs just in case.
Rainfall in Akranes in September
Typically around 17 days of rainfall are expected, averaging 143 mm (5.6 in) for the month. Wet weather is a regular and significant part of this month. Frequent days of rain combined with high totals means proper waterproofs are worth packing.
Temperature in Akranes in September
In September, expect low temperatures in Akranes, with highs of 12°C (54°F) and lows of 7°C (45°F) at night. Even at the warmest part of the day, temperatures stay low. Dressing warmly from the start is the sensible approach. With overnight lows of 7°C (45°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.
Sunshine in Akranes in September
The area enjoys a moderate level of sunlight, with around 121 hours. It's a good balance between sunny and cloudy days.
Wind Speed in Akranes in September
September has wind speeds averaging 5 m/s (10 knots). You can expect gentle to moderate winds that move small trees and make flags wave steadily on typical days. Conditions typically range from light breezes to moderate winds.
Average water temperature in September
At 10°C (50°F), the water is very cold. Most people find it too uncomfortable for anything beyond a brief wade.Our weather planner can help you find worldwide destinations with pleasant weather during this period. July typically offers the best weather for Akranes.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Iceland, check out our Akranes's climate page.
Akranes Temperature in September
Min Temperature
7°C (45°F)
Max Temperature
12°C (54°F)
Water Temperature
10°C (50°F) *
Chance of Rain
58%
Precipitation
143 mm (5.6 in)
Rainy days
17 days
Humidity
79% *
Windspeed
5 m/s (10 knots) *
Sunshine
121 hours *
Percentage Sunshine
30% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Akranes typically stay consistent throughout September, with daily highs averaging around 12°C (54°F). Nights are cold, with lows typically ranging from 5°C (41°F) to 8°C (46°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Akranes in September
Browse day-by-day weather records for Akranes spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Akranes historical weather extremes in September
Based on weather observations in Akranes between 1976 and 2025, these are the recorded extremes during September.
- The warmest day in September was on September 1, 2006, with a maximum of 18°C (64°F).
- On September 30, 1981, Akranes saw its coldest September day with temperatures maxing out at 3°C (37°F).
- Akranes registered its coldest September night on September 25, 2020, with temperatures dropping to -2°C (28°F).
- The wettest day in September Akranes was on September 12, 2007 with 36 mm (1.4 in) of precipitation.
Best Places in Iceland in September
Find out more about the weather in Iceland and which places have the best travel conditions in this month. See all of Iceland in September →
perfect weather
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What to Wear in Akranes in September
The weather can be unpredictable in September, so pack clothes you can easily mix and match. You could bring jeans, other long pants, and a few t-shirts. A light jacket or light sweater will be pleasant for the cooler moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. The water temperature sits at about 10°C (50°F), which is too chilly for most people to enjoy swimming. Leave the swimsuit at home unless you love cold water. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Akranes in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Iceland, check out our Akranes's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Akranes climate overview or explore weather in Iceland.
