Weather on September 17 in Valparaíso
Historical weather data for September 17 in Valparaíso, Chile
Based on 51 years of data from QUINTERO
About This Date
September 17th in Valparaíso, Chile typically brings mild fall weather, with average highs around 20°C and lows near 6°C — a 25°F daily swing. Over 51 years of records, the warmest September 17th was in 2025 (19°C average), while the coldest was 1979 (8°C) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 14% of September 17th dates historically, with the wettest September 17th recording 0.59" of rain. The last decade has been 3.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.8°F warmer on this date compared to 20-30 years ago.
Planning for September 17th in Valparaíso? Great weather for outdoor activities.
Year by Year History
| Year | High | Low | Precip (mm) |
|---|---|---|---|
| 2026 | 25°C (77°F) | 10°C (50°F) | -- |
| 2025 | 26°C (79°F) | 13°C (55°F) | -- |
| 2024 | -- | 6°C (43°F) | -- |
| 2023 | 20°C (68°F) | -- | 0 mm |
| 2022 | 25°C (77°F) | 9°C (49°F) | -- |
| 2021 | -- | 6°C (42°F) | -- |
| 2020 | -- | 5°C (41°F) | 0 mm |
| 2019 | 21°C (69°F) | 4°C (40°F) | 0 mm |
| 2018 | 20°C (68°F) | -- | -- |
| 2017 | 31°C (87°F) | 6°C (43°F) | 0 mm |
| 2015 | -- | 9°C (49°F) | 0 mm |
| 2014 | 14°C (58°F) | -- | 0 mm |
| 2013 | -- | -2°C (28°F) | 1 mm |
| 2012 | 18°C (64°F) | 8°C (46°F) | 0 mm |
| 2011 | -- | 3°C (37°F) | 0 mm |
| 2009 | 19°C (67°F) | -- | -- |
| 2008 | 24°C (76°F) | -- | 0 mm |
| 2007 | 17°C (62°F) | 6°C (42°F) | -- |
| 2006 | -- | 2°C (35°F) | -- |
| 2005 | 22°C (71°F) | 4°C (39°F) | -- |
| 2004 | 27°C (81°F) | 11°C (51°F) | 0 mm |
| 2003 | 26°C (78°F) | 8°C (46°F) | 0 mm |
| 2002 | 18°C (65°F) | 4°C (39°F) | 4 mm |
| 2001 | -- | 8°C (47°F) | 1 mm |
| 2000 | 19°C (67°F) | 7°C (45°F) | -- |
| 1999 | -- | 4°C (40°F) | 0 mm |
| 1998 | -- | 9°C (48°F) | 0 mm |
| 1997 | -- | 10°C (50°F) | 0 mm |
| 1996 | 26°C (78°F) | 9°C (48°F) | 0 mm |
| 1995 | 23°C (73°F) | 11°C (51°F) | 0 mm |
| 1994 | -- | 9°C (48°F) | 0 mm |
| 1993 | 18°C (64°F) | -- | 0 mm |
| 1992 | -- | 2°C (35°F) | 12 mm |
| 1991 | -- | 9°C (49°F) | 15 mm |
| 1990 | -- | 8°C (46°F) | 0 mm |
| 1989 | 19°C (66°F) | 11°C (51°F) | 0 mm |
| 1988 | -- | 2°C (36°F) | -- |
| 1987 | -- | 5°C (41°F) | 0 mm |
| 1986 | -- | -1°C (30°F) | -- |
| 1985 | 20°C (68°F) | -- | 0 mm |
| 1984 | 21°C (69°F) | 12°C (53°F) | -- |
| 1983 | 13°C (55°F) | -- | -- |
| 1981 | 17°C (63°F) | 10°C (50°F) | 0 mm |
| 1980 | 14°C (57°F) | 5°C (41°F) | 0 mm |
| 1979 | 14°C (57°F) | 3°C (37°F) | 0 mm |
| 1978 | -- | 6°C (43°F) | 11 mm |
| 1977 | 15°C (59°F) | 4°C (39°F) | 0 mm |
| 1976 | 26°C (79°F) | 4°C (39°F) | -- |
| 1975 | 15°C (59°F) | 9°C (48°F) | -- |
| 1974 | -- | 2°C (36°F) | 0 mm |
| 1973 | 15°C (59°F) | -- | -- |