Weather on April 21 in Istanbul
Historical weather data for April 21 in Istanbul, Turkey
Based on 56 years of data from ISTANBUL
About This Date
April 21st in Istanbul, Turkey typically brings mild spring weather, with average highs around 17°C and lows near 9°C. Over 56 years of records, the warmest April 21st was in 2008 (20°C average), while the coldest was 1979 (6°C) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 46% of April 21st dates historically, with the wettest April 21st recording 2.3" of rain. The last decade has been 1.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.6°F warmer on this date compared to 20-30 years ago.
Planning for April 21st in Istanbul? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip (mm) |
|---|---|---|---|
| 2026 | 22°C (72°F) | 9°C (48°F) | -- |
| 2025 | 25°C (77°F) | 9°C (49°F) | 0 mm |
| 2024 | 22°C (71°F) | 9°C (49°F) | 25 mm |
| 2023 | 18°C (64°F) | 13°C (55°F) | 0 mm |
| 2022 | 16°C (61°F) | 9°C (48°F) | 5 mm |
| 2021 | 18°C (65°F) | 8°C (46°F) | 0 mm |
| 2020 | -- | 11°C (52°F) | -- |
| 2019 | -- | 5°C (41°F) | 1 mm |
| 2018 | -- | 8°C (47°F) | 6 mm |
| 2017 | 13°C (56°F) | -- | 10 mm |
| 2016 | 18°C (64°F) | 11°C (51°F) | 3 mm |
| 2015 | 13°C (55°F) | -- | 1 mm |
| 2014 | 22°C (71°F) | 12°C (53°F) | 1 mm |
| 2013 | 14°C (58°F) | 4°C (40°F) | 0 mm |
| 2012 | 21°C (69°F) | 13°C (55°F) | 18 mm |
| 2011 | 15°C (59°F) | -- | 11 mm |
| 2010 | 16°C (61°F) | -- | 2 mm |
| 2009 | 24°C (75°F) | 11°C (51°F) | 0 mm |
| 2008 | 29°C (84°F) | 11°C (52°F) | 0 mm |
| 2007 | 21°C (70°F) | 7°C (44°F) | 0 mm |
| 2006 | 19°C (67°F) | 12°C (53°F) | 0 mm |
| 2005 | 27°C (81°F) | 10°C (50°F) | 0 mm |
| 2004 | 14°C (58°F) | -- | 2 mm |
| 2003 | 16°C (60°F) | 5°C (41°F) | -- |
| 2002 | 14°C (58°F) | 10°C (50°F) | 0 mm |
| 2001 | 21°C (69°F) | 17°C (62°F) | -- |
| 2000 | 14°C (57°F) | 12°C (53°F) | 58 mm |
| 1999 | 16°C (60°F) | 10°C (50°F) | -- |
| 1998 | 14°C (57°F) | 10°C (50°F) | 3 mm |
| 1997 | 20°C (68°F) | 12°C (54°F) | 3 mm |
| 1996 | 13°C (55°F) | 7°C (44°F) | 0 mm |
| 1995 | 20°C (68°F) | 9°C (48°F) | -- |
| 1994 | 19°C (67°F) | 9°C (48°F) | 13 mm |
| 1993 | 16°C (60°F) | 8°C (46°F) | -- |
| 1992 | 12°C (53°F) | 7°C (44°F) | 10 mm |
| 1991 | 21°C (70°F) | 10°C (50°F) | -- |
| 1990 | 18°C (65°F) | 11°C (52°F) | 3 mm |
| 1989 | 19°C (66°F) | 11°C (52°F) | -- |
| 1988 | 11°C (52°F) | 8°C (46°F) | 5 mm |
| 1987 | 21°C (69°F) | 7°C (45°F) | -- |
| 1986 | 12°C (54°F) | 8°C (46°F) | 33 mm |
| 1985 | 12°C (54°F) | 6°C (43°F) | -- |
| 1984 | 12°C (54°F) | 4°C (39°F) | 3 mm |
| 1983 | 17°C (62°F) | 9°C (48°F) | 3 mm |
| 1982 | 11°C (51°F) | 7°C (45°F) | 48 mm |
| 1981 | 17°C (62°F) | 7°C (44°F) | -- |
| 1980 | 19°C (66°F) | 12°C (53°F) | 25 mm |
| 1979 | 9°C (48°F) | 3°C (38°F) | -- |
| 1978 | 14°C (58°F) | 8°C (46°F) | -- |
| 1977 | 13°C (56°F) | 6°C (43°F) | -- |
| 1976 | 18°C (64°F) | 6°C (42°F) | -- |
| 1975 | 18°C (64°F) | 7°C (44°F) | 0 mm |
| 1974 | 13°C (56°F) | 3°C (38°F) | -- |
| 1973 | 19°C (67°F) | 11°C (51°F) | 3 mm |
| 1972 | 18°C (64°F) | 11°C (51°F) | 3 mm |
| 1971 | 11°C (51°F) | 6°C (43°F) | -- |