Weather on May 21 in Reykjavik
Historical weather data for May 21 in Reykjavik, Iceland
Avg High10°C (50°F)
Avg Low4°C (40°F)
Warmest197212°C
Coldest20063°C
Based on 56 years of data from REYKJAVIK
About This Date
May 21st in Reykjavik, Iceland typically brings cool spring weather, with average highs around 10°C and lows near 4°C. Over 56 years of records, the warmest May 21st was in 1972 (12°C average), while the coldest was 2006 (3°C) — a 17°F range across recorded history. Rain or other precipitation has occurred on about 27% of May 21st dates historically. The last decade has been 2.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.3°F warmer on this date compared to 20-30 years ago.
Planning for May 21st in Reykjavik? Bring layers as temperatures can vary throughout the day.
Year by Year History
| Year | High | Low | Precip (mm) |
|---|---|---|---|
| 2026 | 16°C (61°F) | 7°C (44°F) | -- |
| 2025 | 15°C (59°F) | 8°C (47°F) | -- |
| 2024 | 9°C (48°F) | 3°C (37°F) | -- |
| 2023 | 7°C (45°F) | 2°C (36°F) | -- |
| 2022 | 14°C (57°F) | 7°C (45°F) | -- |
| 2021 | -- | 3°C (38°F) | -- |
| 2020 | -- | 7°C (45°F) | -- |
| 2019 | 12°C (53°F) | -- | -- |
| 2018 | 7°C (45°F) | 3°C (38°F) | -- |
| 2017 | 16°C (61°F) | 5°C (41°F) | -- |
| 2016 | 8°C (47°F) | 5°C (41°F) | -- |
| 2015 | 7°C (45°F) | 1°C (34°F) | -- |
| 2014 | 11°C (51°F) | 4°C (40°F) | -- |
| 2013 | 7°C (45°F) | 3°C (38°F) | -- |
| 2012 | 14°C (58°F) | 3°C (38°F) | -- |
| 2011 | 11°C (51°F) | 0°C (32°F) | -- |
| 2010 | 13°C (56°F) | 8°C (47°F) | -- |
| 2009 | 11°C (52°F) | 6°C (42°F) | -- |
| 2008 | 9°C (49°F) | 4°C (39°F) | -- |
| 2007 | 6°C (42°F) | 1°C (33°F) | -- |
| 2006 | 6°C (43°F) | 0°C (32°F) | 0 mm |
| 2005 | 7°C (45°F) | -1°C (31°F) | 0 mm |
| 2004 | 8°C (47°F) | 3°C (38°F) | 2 mm |
| 2003 | 12°C (54°F) | 8°C (46°F) | 0 mm |
| 2002 | 12°C (54°F) | 7°C (45°F) | 0 mm |
| 2001 | 9°C (49°F) | 5°C (41°F) | 7 mm |
| 2000 | 9°C (48°F) | 3°C (37°F) | 3 mm |
| 1999 | 10°C (50°F) | 1°C (33°F) | 9 mm |
| 1998 | 11°C (51°F) | 6°C (43°F) | 0 mm |
| 1997 | 8°C (47°F) | 6°C (42°F) | 0 mm |
| 1996 | 11°C (52°F) | 7°C (44°F) | 0 mm |
| 1995 | 11°C (51°F) | 5°C (41°F) | 0 mm |
| 1994 | 9°C (49°F) | 5°C (41°F) | 2 mm |
| 1993 | 12°C (53°F) | 6°C (42°F) | 1 mm |
| 1992 | 8°C (46°F) | 4°C (39°F) | 1 mm |
| 1991 | 6°C (43°F) | 4°C (39°F) | 0 mm |
| 1990 | 10°C (50°F) | 6°C (43°F) | 4 mm |
| 1989 | 8°C (46°F) | 4°C (40°F) | 1 mm |
| 1988 | 9°C (49°F) | 8°C (46°F) | 4 mm |
| 1987 | 11°C (51°F) | 6°C (43°F) | 0 mm |
| 1986 | 13°C (55°F) | 7°C (44°F) | 6 mm |
| 1985 | 16°C (60°F) | 6°C (43°F) | 0 mm |
| 1984 | 11°C (51°F) | 1°C (33°F) | 0 mm |
| 1983 | 11°C (52°F) | 1°C (34°F) | 0 mm |
| 1982 | 12°C (54°F) | 5°C (41°F) | 0 mm |
| 1981 | 11°C (51°F) | 5°C (41°F) | 0 mm |
| 1980 | 11°C (51°F) | 5°C (41°F) | 0 mm |
| 1979 | 8°C (47°F) | -2°C (29°F) | 0 mm |
| 1978 | 8°C (46°F) | 2°C (36°F) | 1 mm |
| 1977 | 10°C (50°F) | 5°C (41°F) | 0 mm |
| 1976 | 10°C (50°F) | 4°C (39°F) | 0 mm |
| 1975 | 12°C (54°F) | 4°C (40°F) | 0 mm |
| 1974 | 11°C (51°F) | 7°C (44°F) | 1 mm |
| 1973 | 8°C (47°F) | 3°C (38°F) | 0 mm |
| 1972 | 14°C (58°F) | 9°C (49°F) | 0 mm |
| 1971 | 8°C (46°F) | 2°C (35°F) | 3 mm |