Weather on September 18 in Reykjavik
Historical weather data for September 18 in Reykjavik, Iceland
Based on 55 years of data from REYKJAVIK
About This Date
September 18th in Reykjavik, Iceland typically brings cool fall weather, with average highs around 11°C and lows near 6°C. Over 55 years of records, the warmest September 18th was in 1996 (12°C average), while the coldest was 1974 (3°C) — a 16°F range across recorded history. Rain or other precipitation has occurred on about 44% of September 18th dates historically, with the wettest September 18th recording 1.03" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for September 18th in Reykjavik? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip |
|---|---|---|---|
| 2025 | 9°C (49°F) | 1°C (33°F) | -- |
| 2024 | 12°C (53°F) | 6°C (42°F) | -- |
| 2023 | 12°C (54°F) | 4°C (39°F) | -- |
| 2022 | 12°C (53°F) | 9°C (48°F) | -- |
| 2021 | 9°C (49°F) | -- | -- |
| 2020 | 10°C (50°F) | 8°C (46°F) | -- |
| 2019 | 11°C (52°F) | 6°C (42°F) | -- |
| 2018 | 11°C (52°F) | 7°C (45°F) | -- |
| 2017 | 12°C (54°F) | 9°C (49°F) | -- |
| 2016 | 10°C (50°F) | 6°C (42°F) | -- |
| 2015 | 9°C (49°F) | 7°C (44°F) | -- |
| 2014 | 12°C (54°F) | 9°C (49°F) | -- |
| 2013 | 8°C (46°F) | 4°C (39°F) | -- |
| 2012 | 11°C (52°F) | 3°C (38°F) | -- |
| 2011 | 11°C (52°F) | 8°C (47°F) | -- |
| 2010 | 12°C (54°F) | 4°C (39°F) | -- |
| 2009 | 10°C (50°F) | 6°C (42°F) | -- |
| 2008 | 11°C (52°F) | 8°C (47°F) | -- |
| 2007 | 10°C (50°F) | 6°C (42°F) | -- |
| 2006 | 14°C (57°F) | 11°C (51°F) | -- |
| 2005 | 8°C (47°F) | 6°C (42°F) | 0.37" |
| 2004 | 12°C (53°F) | 9°C (48°F) | 0.62" |
| 2003 | 11°C (52°F) | 3°C (37°F) | 0" |
| 2002 | 12°C (53°F) | 8°C (46°F) | 0.24" |
| 2001 | 12°C (53°F) | 8°C (46°F) | 0.04" |
| 2000 | 6°C (43°F) | 2°C (35°F) | 0" |
| 1999 | 13°C (55°F) | 7°C (44°F) | 0.03" |
| 1998 | 11°C (51°F) | 3°C (38°F) | 0" |
| 1997 | 9°C (49°F) | -2°C (29°F) | 0" |
| 1996 | 14°C (58°F) | 11°C (51°F) | 0.26" |
| 1995 | 11°C (51°F) | 7°C (45°F) | 0.01" |
| 1994 | 11°C (51°F) | 7°C (44°F) | 0.13" |
| 1993 | 13°C (55°F) | 6°C (43°F) | 0" |
| 1992 | 11°C (51°F) | 8°C (46°F) | 0.9" |
| 1991 | 9°C (49°F) | 7°C (44°F) | 0" |
| 1990 | 6°C (42°F) | 2°C (35°F) | 0.78" |
| 1989 | 11°C (51°F) | 4°C (39°F) | 0" |
| 1988 | 11°C (52°F) | 6°C (43°F) | 0.88" |
| 1987 | 11°C (52°F) | 3°C (38°F) | 0.09" |
| 1986 | 12°C (53°F) | 7°C (45°F) | 0.17" |
| 1985 | 8°C (47°F) | 3°C (37°F) | 0.33" |
| 1984 | 9°C (49°F) | 7°C (44°F) | 0.45" |
| 1983 | 12°C (53°F) | 5°C (41°F) | 0" |
| 1982 | 6°C (42°F) | 1°C (33°F) | 0.07" |
| 1981 | 12°C (54°F) | 8°C (47°F) | 0.15" |
| 1980 | 11°C (51°F) | 5°C (41°F) | 0" |
| 1979 | 7°C (45°F) | 3°C (38°F) | 0" |
| 1978 | 9°C (49°F) | 6°C (42°F) | 0.13" |
| 1977 | 13°C (55°F) | 8°C (47°F) | 0" |
| 1976 | 12°C (54°F) | 9°C (49°F) | 0.01" |
| 1975 | 8°C (47°F) | 3°C (38°F) | 1.03" |
| 1974 | 6°C (43°F) | 1°C (34°F) | 0.03" |
| 1973 | 12°C (54°F) | 10°C (50°F) | 0.21" |
| 1972 | 10°C (50°F) | 7°C (45°F) | 0.13" |
| 1971 | 11°C (52°F) | 8°C (47°F) | 0.65" |