Reykjavik weather in September
Reykjavik in September averages 9°C (48°F), 87 mm of rain and 3.9 hours of sun a day.
Of the twelve months in Reykjavik, September is the fourth warmest, the second wettest and the sixth sunniest.
- Average temp
- 9°C (48°F)
6–11°C · 43–53°F
- Rainfall
- 87 mm
Showers likely
- Sunshine
- 3.9 h
hours per day
- Wind
- 23 km/h
What is Reykjavik 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 Reykjavik in September?
A light rain jacket
About 87 mm falls this month — showers rather than washouts.
A warm mid-layer
Nights drop to around 6°C (43°F).
September compared with August and October
September in Reykjavik is 2.6°C cooler than August and 21 mm wetter than it, which averages 11°C (53°F).
September in Reykjavik is 3.7°C warmer than October and about as wet as it, which averages 5°C (41°F).
Daylight in Reykjavik in September
On 15 September the sun is up for 13 hours in Reykjavik, rising about 06:51 and setting about 19:51 local time.
September ends 3 hours 7 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 4 minutes short of June, the longest-lit month here.
Where to stay in Reykjavik
Dates are a starting point for September.
Travel guides for Reykjavik
What to read before you book.
Reykjavik 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 | 1°C / 33°F | 86 mm |
| February | 1°C / 33°F | 87 mm |
| March | 2°C / 35°F | 84 mm |
| April | 4°C / 39°F | 56 mm |
| May | 7°C / 45°F | 49 mm |
| June | 10°C / 50°F | 41 mm |
| July | 12°C / 54°F | 50 mm |
| August | 11°C / 53°F | 66 mm |
| September | 9°C / 48°F | 87 mm |
| October | 5°C / 41°F | 80 mm |
| November | 2°C / 36°F | 86 mm |
| December | 1°C / 33°F | 97 mm |
Check another month
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FAQs about Reykjavik in September
September climate averages for Reykjavik, 1991–2020.
Reykjavik averages 9°C (48°F) in September, ranging from about 6°C (43°F) at night to 11°C (53°F) in the afternoon. That is a 1991–2020 average, so an individual week can run either side of it.
Some. About 87 mm falls across September, enough to need a light jacket but not enough to reshape a trip.
Yes. September averages 9°C (48°F) against 5°C (41°F) in October — 3.7°C warmer.
September is 2.6°C cooler than August, and 21 mm wetter.
Yes. September falls inside the most comfortable stretch of the year here, May to October, on temperature and rainfall together.
About 3.9 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 of daylight in mid-September, against 21 hours 4 minutes in June and 4 hours 12 minutes in December.
On 15 September, sunrise is about 06:51 and sunset about 19:51 local time. Both shift across the month — the month ends 3 hours 7 minutes shorter than it starts.
