Iceland weather in September
Iceland in September averages 9°C (47°F), 51 mm of rain and 3 hours of sun a day.
Of the twelve months in Iceland, September is the fourth warmest, the sixth wettest and the sixth sunniest.
- Average temp
- 9°C (47°F)
5–12°C · 41–53°F
- Rainfall
- 51 mm
Showers likely
- Sunshine
- 3 h
hours per day
What is Iceland like in September?
Daytime
Days are cool.
Rain
Some rain is likely; pack for showers.
Evening
Evenings are cooler. A layer helps after sunset.
What should I pack for Iceland in September?
A light rain jacket
About 51 mm falls this month — showers rather than washouts.
A warm mid-layer
Nights drop to around 5°C (41°F).
September compared with August and October
September in Iceland is 2.9°C cooler than August and 11 mm wetter than it, which averages 11°C (53°F).
September in Iceland is 4.8°C warmer than October and 28 mm drier than it, which averages 4°C (39°F).
Daylight in Iceland in September
On 15 September the sun is up for 13 hours 2 minutes in Iceland, rising about 06:39 and setting about 19:41 local time.
September ends 3 hours 14 minutes shorter than it begins, so the last week of the month is a different length of day from the first.
That is 8 hours 50 minutes short of June, the longest-lit month here.
Travel guides for Iceland
What to read before you book.
Iceland weather by month
TemperatureRainfall
How September compares with the rest of the year
September is highlighted. Every other month links to its own page.
| Month | Average | Rainfall |
|---|---|---|
| January | 0°C / 31°F | 61 mm |
| February | -1°C / 31°F | 51 mm |
| March | 0°C / 33°F | 50 mm |
| April | 3°C / 38°F | 25 mm |
| May | 7°C / 44°F | 23 mm |
| June | 10°C / 50°F | 20 mm |
| July | 12°C / 53°F | 33 mm |
| August | 11°C / 53°F | 40 mm |
| September | 9°C / 47°F | 51 mm |
| October | 4°C / 39°F | 78 mm |
| November | 1°C / 33°F | 64 mm |
| December | -1°C / 31°F | 73 mm |
Check another month
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FAQs about Iceland in September
September climate averages for Iceland, 1991–2020.
Iceland averages 9°C (47°F) in September, ranging from about 5°C (41°F) at night to 12°C (53°F) in the afternoon. That is a 1991–2020 average, so an individual week can run either side of it.
Some. About 51 mm falls across September, enough to need a light jacket but not enough to reshape a trip.
Yes. September averages 9°C (47°F) against 4°C (39°F) in October — 4.8°C warmer.
September is 2.9°C cooler than August, and 11 mm wetter.
Yes. September falls inside the most comfortable stretch of the year here, April to September, on temperature and rainfall together.
About 3 hours of sun a day on the 1991–2020 average, so daylight is short on useful sun.
This page does not show today's weather. It is a 1991–2020 climate normal from Meteostat — a long-run average of what September is usually like, which is what you want when booking months ahead. For today or the coming week, check a live forecast.
About 13 hours 2 minutes of daylight in mid-September, against 21 hours 52 minutes in June and 3 hours 42 minutes in December.
On 15 September, sunrise is about 06:39 and sunset about 19:41 local time. Both shift across the month — the month ends 3 hours 14 minutes shorter than it starts.
