Weather on September 15 in Riga
Historical weather data for September 15 in Riga, Latvia
Based on 47 years of data from RIGA
About This Date
September 15th in Riga, Latvia typically brings mild fall weather, with average highs around 16°C and lows near 9°C. Over 47 years of records, the warmest September 15th was in 2024 (19°C average), while the coldest was 1971 (6°C) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 40% of September 15th dates historically, with the wettest September 15th recording 2.08" of rain. The last decade has been 5.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.4°F warmer on this date compared to 20-30 years ago.
Planning for September 15th in Riga? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip (mm) |
|---|---|---|---|
| 2025 | 17°C (63°F) | 14°C (57°F) | -- |
| 2024 | 21°C (70°F) | 17°C (62°F) | -- |
| 2023 | -- | 6°C (42°F) | 0 mm |
| 2022 | 16°C (61°F) | 12°C (53°F) | -- |
| 2017 | 16°C (61°F) | 11°C (51°F) | 10 mm |
| 2016 | 22°C (71°F) | 7°C (44°F) | -- |
| 2015 | 16°C (61°F) | 11°C (52°F) | -- |
| 2014 | -- | 4°C (40°F) | -- |
| 2013 | -- | 9°C (48°F) | -- |
| 2012 | 17°C (63°F) | 13°C (55°F) | -- |
| 2011 | 16°C (61°F) | -- | -- |
| 2010 | 15°C (59°F) | 12°C (53°F) | -- |
| 2009 | 17°C (62°F) | -- | -- |
| 2004 | 19°C (67°F) | -- | -- |
| 2003 | 22°C (72°F) | 11°C (52°F) | -- |
| 2002 | 13°C (56°F) | 9°C (48°F) | -- |
| 2001 | 15°C (59°F) | -- | 16 mm |
| 2000 | 14°C (58°F) | 5°C (41°F) | -- |
| 1999 | 15°C (59°F) | -- | 0 mm |
| 1998 | 17°C (62°F) | 10°C (50°F) | -- |
| 1997 | 16°C (60°F) | 8°C (46°F) | -- |
| 1996 | 12°C (53°F) | 9°C (48°F) | 13 mm |
| 1995 | -- | 9°C (49°F) | 0 mm |
| 1994 | 22°C (72°F) | 11°C (52°F) | 0 mm |
| 1993 | 13°C (55°F) | 6°C (43°F) | 46 mm |
| 1992 | 18°C (64°F) | -- | 8 mm |
| 1991 | 21°C (69°F) | 9°C (49°F) | 0 mm |
| 1990 | 14°C (57°F) | 10°C (50°F) | 6 mm |
| 1989 | 17°C (62°F) | 10°C (50°F) | 8 mm |
| 1988 | 16°C (61°F) | 8°C (46°F) | 0 mm |
| 1987 | 16°C (60°F) | 9°C (49°F) | 24 mm |
| 1986 | 15°C (59°F) | 11°C (51°F) | 9 mm |
| 1985 | 14°C (58°F) | 11°C (51°F) | 0 mm |
| 1984 | 14°C (58°F) | 8°C (47°F) | 3 mm |
| 1983 | 16°C (61°F) | 7°C (45°F) | 1 mm |
| 1982 | 20°C (68°F) | 9°C (48°F) | 0 mm |
| 1981 | 14°C (57°F) | 9°C (48°F) | 0 mm |
| 1980 | 16°C (60°F) | 9°C (48°F) | 1 mm |
| 1979 | 13°C (56°F) | 7°C (44°F) | 45 mm |
| 1978 | 17°C (62°F) | 11°C (52°F) | 23 mm |
| 1977 | 11°C (52°F) | 5°C (41°F) | 53 mm |
| 1976 | 21°C (70°F) | 13°C (56°F) | 0 mm |
| 1975 | 19°C (67°F) | 13°C (55°F) | 0 mm |
| 1974 | 14°C (58°F) | 6°C (43°F) | 0 mm |
| 1973 | 13°C (56°F) | 7°C (45°F) | 11 mm |
| 1972 | 23°C (73°F) | 8°C (46°F) | 4 mm |
| 1971 | 10°C (50°F) | 3°C (37°F) | 18 mm |