Weather on September 18 in Riga
Historical weather data for September 18 in Riga, Latvia
Avg High16°C (60°F)
Avg Low8°C (47°F)
Warmest197518°C
Coldest19737°C
Based on 46 years of data from RIGA
About This Date
September 18th in Riga, Latvia typically brings mild fall weather, with average highs around 16°C and lows near 8°C. Over 46 years of records, the warmest September 18th was in 1975 (18°C average), while the coldest was 1973 (7°C) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 33% of September 18th dates historically.
Planning for September 18th 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) | 12°C (53°F) | -- |
| 2024 | 19°C (67°F) | 11°C (51°F) | -- |
| 2023 | -- | 8°C (46°F) | 0 mm |
| 2022 | 16°C (60°F) | 7°C (44°F) | -- |
| 2016 | 16°C (61°F) | -- | -- |
| 2015 | 21°C (69°F) | -- | -- |
| 2014 | -- | 6°C (42°F) | -- |
| 2013 | -- | 13°C (56°F) | -- |
| 2012 | 21°C (70°F) | 13°C (56°F) | -- |
| 2011 | 17°C (62°F) | 7°C (44°F) | -- |
| 2010 | 14°C (58°F) | 9°C (48°F) | 2 mm |
| 2009 | 16°C (61°F) | 12°C (54°F) | -- |
| 2004 | 18°C (64°F) | 7°C (45°F) | -- |
| 2003 | 19°C (67°F) | 7°C (45°F) | -- |
| 2002 | 15°C (59°F) | 11°C (51°F) | 11 mm |
| 2001 | 21°C (70°F) | 13°C (56°F) | -- |
| 2000 | 15°C (59°F) | 3°C (37°F) | -- |
| 1999 | 19°C (67°F) | 9°C (48°F) | 0 mm |
| 1998 | 19°C (66°F) | 9°C (49°F) | -- |
| 1997 | 16°C (60°F) | -- | -- |
| 1996 | 13°C (55°F) | 2°C (36°F) | -- |
| 1995 | 15°C (59°F) | -2°C (29°F) | 0 mm |
| 1994 | 13°C (56°F) | 7°C (44°F) | 1 mm |
| 1993 | 8°C (46°F) | -- | 2 mm |
| 1992 | 17°C (62°F) | 13°C (55°F) | -- |
| 1991 | 15°C (59°F) | 11°C (51°F) | 2 mm |
| 1990 | 14°C (57°F) | 7°C (45°F) | 0 mm |
| 1989 | 17°C (62°F) | 12°C (53°F) | 3 mm |
| 1988 | 14°C (58°F) | 8°C (46°F) | 2 mm |
| 1987 | 12°C (54°F) | 8°C (46°F) | 0 mm |
| 1986 | 12°C (53°F) | 3°C (38°F) | 0 mm |
| 1985 | 14°C (58°F) | 8°C (47°F) | 8 mm |
| 1984 | 14°C (57°F) | 8°C (47°F) | 7 mm |
| 1983 | 15°C (59°F) | 9°C (49°F) | 1 mm |
| 1982 | 21°C (69°F) | 7°C (45°F) | 0 mm |
| 1981 | 10°C (50°F) | 8°C (46°F) | 0 mm |
| 1980 | 13°C (56°F) | 9°C (48°F) | 0 mm |
| 1979 | 14°C (57°F) | 8°C (47°F) | 7 mm |
| 1978 | 12°C (54°F) | 8°C (46°F) | 1 mm |
| 1977 | 13°C (55°F) | 7°C (44°F) | 1 mm |
| 1976 | 14°C (57°F) | 9°C (49°F) | 0 mm |
| 1975 | 22°C (72°F) | 14°C (57°F) | 0 mm |
| 1974 | 20°C (68°F) | 8°C (46°F) | 1 mm |
| 1973 | 13°C (55°F) | 1°C (33°F) | 0 mm |
| 1972 | 16°C (60°F) | 11°C (51°F) | 1 mm |
| 1971 | 13°C (55°F) | 4°C (40°F) | 0 mm |