Siglufjörður Weather in September
Average highs run from 9°C on September 1 to 5°C on September 30, and lows from 5°C to 2°C. Normal precipitation for the month is 129 mm over about 21 wet days.
September day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
September at a glance
- Average high
- 7°C
- Average low
- 3°C
- Precipitation
- 129 mm
- Reanalysis high
- 15°CSep 4, 2010
- Reanalysis low
- -6°CSep 28, 1995
- Daylight
- 14 h 49 min to 11 h 23 min
- Cloud cover
- 82%
- Humidity
- 89%
- Dew point
- 3°C
- Wind
- 18.0 km/h
Every day of the month
A wet day has at least 1 mm of precipitation in the reanalysis.
| Date | Normal high | Normal low | Reanalysis high | Reanalysis low | Chance wet |
|---|---|---|---|---|---|
| Sep 1 | 9°C | 5°C | 14°C 2010 | 1°C 2013 | 71% |
| Sep 2 | 9°C | 5°C | 14°C 2010 | 1°C 2002 | 71% |
| Sep 3 | 9°C | 5°C | 13°C 2017 | 1°C 2002 | 71% |
| Sep 4 | 8°C | 5°C | 15°C 2010 | 1°C 1992 | 72% |
| Sep 5 | 8°C | 5°C | 14°C 2010 | 2°C 1992 | 71% |
| Sep 6 | 8°C | 4°C | 11°C 2003 | 1°C 2005 | 69% |
| Sep 7 | 8°C | 4°C | 13°C 2010 | 1°C 2005 | 67% |
| Sep 8 | 8°C | 4°C | 14°C 2004 | 1°C 2011 | 66% |
| Sep 9 | 8°C | 4°C | 12°C 2003 | 0°C 2011 | 66% |
| Sep 10 | 8°C | 4°C | 12°C 2002 | 0°C 2011 | 65% |
| Sep 11 | 8°C | 4°C | 13°C 1995 | -2°C 2012 | 66% |
| Sep 12 | 7°C | 4°C | 12°C 2002 | -3°C 2012 | 66% |
| Sep 13 | 7°C | 4°C | 13°C 2002 | -2°C 1997 | 66% |
| Sep 14 | 7°C | 3°C | 12°C 2014 | -3°C 1997 | 66% |
| Sep 15 | 7°C | 3°C | 13°C 1996 | -3°C 2007 | 66% |
| Sep 16 | 7°C | 3°C | 14°C 2017 | -2°C 2007 | 64% |
| Sep 17 | 7°C | 3°C | 12°C 1996 | -3°C 2007 | 64% |
| Sep 18 | 7°C | 3°C | 12°C 2017 | -4°C 2000 | 63% |
| Sep 19 | 7°C | 3°C | 11°C 1996 | -4°C 2000 | 64% |
| Sep 20 | 6°C | 3°C | 12°C 1999 | -3°C 2000 | 63% |
| Sep 21 | 6°C | 3°C | 11°C 2002 | -1°C 2013 | 63% |
| Sep 22 | 6°C | 3°C | 11°C 2019 | -2°C 2003 | 64% |
| Sep 23 | 6°C | 2°C | 11°C 2002 | -4°C 2018 | 65% |
| Sep 24 | 6°C | 2°C | 13°C 2019 | -2°C 2020 | 66% |
| Sep 25 | 6°C | 2°C | 12°C 2019 | -2°C 2020 | 68% |
| Sep 26 | 6°C | 2°C | 12°C 2019 | -2°C 1995 | 68% |
| Sep 27 | 5°C | 2°C | 11°C 2017 | -3°C 1995 | 68% |
| Sep 28 | 5°C | 2°C | 9°C 2010 | -6°C 1995 | 68% |
| Sep 29 | 5°C | 2°C | 9°C 2010 | -4°C 1995 | 68% |
| Sep 30 | 5°C | 2°C | 10°C 2011 | -3°C 1994 | 67% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT).
- September 1
- sunrise 5:50 AM, sunset 8:39 PM
- September 30
- sunrise 7:23 AM, sunset 6:46 PM
Other months
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.