Akranes, Iceland — Weather in September 2026

Climate Overview

Akranes, Iceland in September has cold conditions, with highs averaging around 10°C (50°F). Rain falls on about 17 days this month, totalling around 136 mm. Sea temperature stays cool at 10.7°C (51°F).

This month falls at the beginning of Autumn.

Daily highs in September gradually drop from around 12°C (53°F) at the start to 8°C (47°F) by month's end.

September sees fairly even rainfall, totalling about 136 mm across the month.

Expect around 8.0h of sunshine at the start of September, decreasing to 5.8h by the end.

The warmest days tend to fall around the 3th, averaging 11.9°C (53°F).

Compared to August, this month is about 3°C cooler with 5 more rainy days. Temperatures begin dropping heading into October.

Monthly September Averages

Temperature

10°C / 6°C

Feels Like

7°C / 2°C

Rain

17 days · 136 mm

Sunshine

6.8h / day

Humidity

84% — Very Humid

Wind

21 km/h

Wind Direction

E (79°)

Gusts

46 km/h

Daylight

13 h

Cloud Cover

78%

Clear Sky Days

0.7

UV Index

2.1 — Moderate

Sea Temperature

11°C

Dew Point

5°C — Dry

Moon Phase

Waxing Crescent · 11%

Snow Days

1 days · 0.8 cm

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

HighLow

Daily Precipitation

Rainfall

Daily Sunshine

Sunshine

Daily Wind Speed

Wind Speed

Sun Position

Sunrise 06:52

Daylight 13.1h

Sunset 19:58

What to Expect

Keep afternoons flexible as tropical showers are common — they typically clear within an hour.

Wet weather can spread across much of the day, so it is best to keep outdoor plans flexible.

2 of the last 5 yearly records were warmer than this month's long-run average.

Compare Months

Month	Temp	Feels Like	Rain	Sun	Humidity	UV	Status	Details
January	0°C / -4°C	-5°C / -10°C	17days (127 mm) Wet	1.3h Poor	82% Humid	0.2 Low	Poor	View Details
February	1°C / -3°C	-4°C / -8°C	16days (121 mm) Wet	3.3h Poor	82% Humid	0.8 Low	Poor	View Details
March	3°C / -2°C	-2°C / -7°C	16days (113 mm) Wet	6.5h Fair	79% Humid	1.8 Low	Poor	View Details
April	6°C / 1°C	2°C / -3°C	14days (84 mm) Wet	8.9h Good	78% Humid	3.2 Moderate	Poor	View Details
May	9°C / 4°C	6°C / 0°C	17days (102 mm) Wet	10.8h Excellent	77% Humid	3.8 Moderate	Poor	View Details
June best	12°C / 7°C	9°C / 4°C	14days (81 mm) Wet	10.1h Excellent	79% Humid	3.9 Moderate	Fair	View Details
July best	14°C / 9°C	12°C / 7°C	14days (78 mm) Wet	9.6h Good	82% Humid	3.7 Moderate	Fair	View Details
August best	13°C / 9°C	11°C / 6°C	12days (83 mm) Wet	8.9h Good	82% Humid	3.2 Moderate	Fair	View Details
September	10°C / 6°C	7°C / 2°C	17days (136 mm) Wet	6.8h Fair	84% Humid	2.1 Moderate	Poor	View Details
October	6°C / 2°C	3°C / -2°C	17days (113 mm) Wet	4.3h Fair	85% Humid	1 Low	Poor	View Details
November	3°C / -1°C	-1°C / -5°C	13days (96 mm) Wet	1.8h Poor	84% Humid	0.3 Low	Poor	View Details
December	1°C / -3°C	-4°C / -8°C	16days (110 mm) Wet	0.8h Poor	83% Humid	0.1 Low	Poor	View Details

What to Wear

Full winter gear is a must — insulated coat, thermal base layers, warm hat, gloves, and waterproof boots.

A waterproof jacket or compact umbrella is recommended for occasional showers.

Packing List

Layered clothingLight jacketUmbrellaWaterproof jacketWaterproof shoes

Frequently Asked Questions

Expand all

Is September a good time to visit Akranes?

September is typically poor for visiting Akranes, with average highs of 10°C (50°F) and around 17 rainy days. Akranes, Iceland in September has cold conditions, with highs averaging around 10°C (50°F). Rain falls on about 17 days

Does it rain a lot in Akranes in September?

Akranes typically sees around 17 rainy days in September with 136 mm (5.4 in) of total rainfall. Pack a waterproof jacket.

Does it get cold at night in Akranes in September?

Nights in Akranes during September are cool at around 6°C (42°F). Bring a jacket or sweater for evenings.

What should I pack for Akranes in September?

With highs of 10°C (50°F) and lows of 6°C (42°F) in September, we recommend: Layered clothing, Light jacket, Umbrella, Waterproof jacket, Waterproof shoes. Comfortable walking shoes are essential.

Is September among the best months weather-wise in Akranes?

September is not the most favourable month weather-wise in Akranes. Consider visiting during months with milder temperatures or less rainfall for a better experience.

What is the UV index in Akranes in September?

The average UV index in Akranes during September is 2 (low). No special sun protection is needed.

How many hours of daylight are there in Akranes in September?

Akranes gets approximately 13 hours of daylight per day in September, with around 7 hours of sunshine.

Does it snow in Akranes in September?

Yes, Akranes typically sees around 1 snow days in September with roughly 1 cm (0 in) of snowfall.

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