Weather on August 21 in Reykjavik
Historical weather data for August 21 in Reykjavik, Iceland
Based on 55 years of data from REYKJAVIK
About This Date
August 21st in Reykjavik, Iceland typically brings cool summer weather, with average highs around 13°C and lows near 8°C. Over 55 years of records, the warmest August 21st was in 2012 (15°C average), while the coldest was 1976 (7°C) — a 15°F range across recorded history. Rain or other precipitation has occurred on about 35% of August 21st dates historically, with the wettest August 21st recording 0.91" of rain. The last decade has been 1.7°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.7°F cooler on this date compared to 20-30 years ago.
Planning for August 21st 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 | 14°C (58°F) | 11°C (52°F) | -- |
| 2024 | 10°C (50°F) | 7°C (45°F) | -- |
| 2023 | 13°C (56°F) | 8°C (47°F) | -- |
| 2022 | 13°C (55°F) | 4°C (39°F) | -- |
| 2021 | 14°C (57°F) | 9°C (49°F) | -- |
| 2020 | 18°C (64°F) | 7°C (44°F) | -- |
| 2019 | -- | 11°C (51°F) | -- |
| 2018 | 11°C (52°F) | 9°C (48°F) | -- |
| 2017 | 16°C (60°F) | 8°C (46°F) | -- |
| 2016 | 12°C (54°F) | 11°C (51°F) | -- |
| 2015 | 15°C (59°F) | 10°C (50°F) | -- |
| 2014 | 13°C (56°F) | 7°C (44°F) | -- |
| 2013 | 12°C (54°F) | 8°C (46°F) | -- |
| 2012 | 17°C (63°F) | 13°C (55°F) | -- |
| 2011 | 12°C (54°F) | 7°C (45°F) | -- |
| 2010 | 12°C (54°F) | 6°C (43°F) | -- |
| 2009 | 11°C (51°F) | 6°C (43°F) | -- |
| 2008 | 13°C (55°F) | 9°C (49°F) | -- |
| 2007 | 14°C (58°F) | 11°C (52°F) | -- |
| 2006 | 16°C (60°F) | 9°C (49°F) | 0" |
| 2005 | 13°C (55°F) | 9°C (48°F) | 0.52" |
| 2004 | 14°C (58°F) | 7°C (45°F) | 0" |
| 2003 | 17°C (62°F) | 11°C (52°F) | 0.02" |
| 2002 | 12°C (54°F) | 8°C (47°F) | 0.76" |
| 2001 | 14°C (58°F) | 11°C (51°F) | 0.25" |
| 2000 | 16°C (61°F) | 7°C (44°F) | 0" |
| 1999 | 12°C (54°F) | 11°C (51°F) | 0.02" |
| 1998 | 13°C (56°F) | 10°C (50°F) | 0.02" |
| 1997 | 17°C (62°F) | 12°C (54°F) | 0.52" |
| 1996 | 13°C (55°F) | 9°C (49°F) | 0" |
| 1995 | 14°C (58°F) | 11°C (51°F) | 0.64" |
| 1994 | 13°C (55°F) | 7°C (45°F) | 0.01" |
| 1993 | 11°C (51°F) | 3°C (38°F) | 0" |
| 1992 | 14°C (58°F) | 8°C (47°F) | 0.05" |
| 1991 | 12°C (53°F) | 5°C (41°F) | 0" |
| 1990 | 13°C (55°F) | 6°C (43°F) | 0.75" |
| 1989 | 14°C (58°F) | 9°C (48°F) | 0.17" |
| 1988 | 11°C (52°F) | 6°C (42°F) | 0" |
| 1987 | 16°C (60°F) | 8°C (46°F) | 0" |
| 1986 | 12°C (53°F) | 8°C (47°F) | 0" |
| 1985 | 13°C (56°F) | 11°C (51°F) | 0.91" |
| 1984 | 12°C (53°F) | 8°C (46°F) | 0" |
| 1983 | 10°C (50°F) | 6°C (42°F) | 0.05" |
| 1982 | 14°C (58°F) | 7°C (45°F) | 0" |
| 1981 | 11°C (52°F) | 7°C (45°F) | 0.47" |
| 1980 | 13°C (55°F) | 6°C (42°F) | 0" |
| 1979 | 12°C (54°F) | 7°C (45°F) | 0" |
| 1978 | 14°C (58°F) | 10°C (50°F) | 0.28" |
| 1977 | 13°C (56°F) | 9°C (48°F) | 0" |
| 1976 | 9°C (49°F) | 4°C (40°F) | 0.5" |
| 1975 | 13°C (56°F) | 4°C (39°F) | 0" |
| 1974 | 13°C (55°F) | 8°C (46°F) | 0" |
| 1973 | 12°C (54°F) | 5°C (41°F) | 0" |
| 1972 | 12°C (53°F) | 8°C (46°F) | 0.16" |
| 1971 | 14°C (57°F) | 8°C (47°F) | 0.04" |