Weather on September 20 in Reykjavik
Historical weather data for September 20 in Reykjavik, Iceland
Based on 55 years of data from REYKJAVIK
About This Date
September 20th 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 20th was in 1999 (14°C average), while the coldest was 1990 (2°C) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 47% of September 20th dates historically, with the wettest September 20th recording 0.77" of rain. The last decade has been 3.9°F cooler on this date compared to 20-30 years ago.
The last decade has been 3.9°F cooler on this date compared to 20-30 years ago.
Planning for September 20th 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 | 6°C (43°F) | 1°C (33°F) | -- |
| 2024 | 9°C (49°F) | 2°C (36°F) | -- |
| 2023 | 13°C (56°F) | 6°C (43°F) | -- |
| 2022 | 12°C (54°F) | 9°C (49°F) | -- |
| 2021 | 11°C (52°F) | 6°C (43°F) | -- |
| 2020 | 11°C (51°F) | 5°C (41°F) | -- |
| 2019 | 13°C (56°F) | -- | -- |
| 2018 | 6°C (42°F) | 3°C (38°F) | -- |
| 2017 | 8°C (47°F) | 7°C (44°F) | -- |
| 2016 | 7°C (45°F) | 6°C (42°F) | -- |
| 2015 | 12°C (54°F) | 7°C (45°F) | -- |
| 2014 | 11°C (51°F) | 8°C (46°F) | -- |
| 2013 | 8°C (47°F) | 4°C (40°F) | -- |
| 2012 | 9°C (49°F) | 1°C (34°F) | -- |
| 2011 | 10°C (50°F) | 6°C (43°F) | -- |
| 2010 | 8°C (47°F) | 4°C (40°F) | -- |
| 2009 | 11°C (52°F) | 6°C (43°F) | -- |
| 2008 | 11°C (51°F) | 4°C (40°F) | -- |
| 2007 | 9°C (48°F) | 4°C (39°F) | -- |
| 2006 | 13°C (55°F) | 8°C (46°F) | -- |
| 2005 | 7°C (45°F) | 2°C (36°F) | 0.25" |
| 2004 | 12°C (53°F) | 7°C (45°F) | 0" |
| 2003 | 11°C (51°F) | 6°C (42°F) | 0.42" |
| 2002 | 12°C (54°F) | 9°C (49°F) | 0.14" |
| 2001 | 13°C (55°F) | 8°C (47°F) | 0.5" |
| 2000 | 11°C (52°F) | 0°C (32°F) | 0" |
| 1999 | 17°C (63°F) | 12°C (53°F) | 0.25" |
| 1998 | 12°C (53°F) | 7°C (44°F) | 0.45" |
| 1997 | 11°C (51°F) | 9°C (48°F) | 0.29" |
| 1996 | 14°C (57°F) | 11°C (51°F) | 0.03" |
| 1995 | 12°C (53°F) | 7°C (45°F) | 0.39" |
| 1994 | 9°C (49°F) | 2°C (35°F) | 0" |
| 1993 | 13°C (56°F) | 8°C (46°F) | 0.31" |
| 1992 | 12°C (53°F) | 7°C (45°F) | 0.77" |
| 1991 | 12°C (53°F) | 6°C (42°F) | 0.69" |
| 1990 | 3°C (37°F) | 1°C (33°F) | 0.11" |
| 1989 | 10°C (50°F) | 5°C (41°F) | 0" |
| 1988 | 8°C (47°F) | 2°C (36°F) | 0.06" |
| 1987 | 10°C (50°F) | 7°C (44°F) | 0.1" |
| 1986 | 9°C (49°F) | 6°C (42°F) | 0" |
| 1985 | 8°C (46°F) | -1°C (31°F) | 0" |
| 1984 | 10°C (50°F) | 4°C (40°F) | 0.03" |
| 1983 | 11°C (52°F) | 4°C (39°F) | 0" |
| 1982 | 12°C (53°F) | 3°C (37°F) | 0.6" |
| 1981 | 13°C (56°F) | 6°C (42°F) | 0" |
| 1980 | 11°C (51°F) | 7°C (45°F) | 0.11" |
| 1979 | 5°C (41°F) | 1°C (33°F) | 0.04" |
| 1978 | 11°C (52°F) | 8°C (47°F) | 0.34" |
| 1977 | 12°C (53°F) | 9°C (49°F) | 0" |
| 1976 | 14°C (57°F) | 11°C (51°F) | 0.47" |
| 1975 | 7°C (45°F) | 2°C (36°F) | 0.2" |
| 1974 | 8°C (47°F) | 3°C (38°F) | 0.6" |
| 1973 | 9°C (49°F) | 5°C (41°F) | 0.22" |
| 1972 | 12°C (53°F) | 7°C (44°F) | 0.71" |
| 1971 | 8°C (47°F) | 3°C (37°F) | 0.04" |