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, with the wettest September 18th recording 1.07" of rain.
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 |
|---|---|---|---|
| 2025 | 17°C (63°F) | 12°C (53°F) | -- |
| 2024 | 19°C (67°F) | 11°C (51°F) | -- |
| 2023 | -- | 8°C (46°F) | 0" |
| 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) | 0.15" |
| 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) | 1.07" |
| 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" |
| 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" |
| 1994 | 13°C (56°F) | 7°C (44°F) | 0.1" |
| 1993 | 8°C (46°F) | -- | 0.2" |
| 1992 | 17°C (62°F) | 13°C (55°F) | -- |
| 1991 | 15°C (59°F) | 11°C (51°F) | 0.2" |
| 1990 | 14°C (57°F) | 7°C (45°F) | 0" |
| 1989 | 17°C (62°F) | 12°C (53°F) | 0.26" |
| 1988 | 14°C (58°F) | 8°C (46°F) | 0.14" |
| 1987 | 12°C (54°F) | 8°C (46°F) | 0" |
| 1986 | 12°C (53°F) | 3°C (38°F) | 0" |
| 1985 | 14°C (58°F) | 8°C (47°F) | 0.78" |
| 1984 | 14°C (57°F) | 8°C (47°F) | 0.7" |
| 1983 | 15°C (59°F) | 9°C (49°F) | 0.07" |
| 1982 | 21°C (69°F) | 7°C (45°F) | 0" |
| 1981 | 10°C (50°F) | 8°C (46°F) | 0" |
| 1980 | 13°C (56°F) | 9°C (48°F) | 0" |
| 1979 | 14°C (57°F) | 8°C (47°F) | 0.71" |
| 1978 | 12°C (54°F) | 8°C (46°F) | 0.1" |
| 1977 | 13°C (55°F) | 7°C (44°F) | 0.1" |
| 1976 | 14°C (57°F) | 9°C (49°F) | 0" |
| 1975 | 22°C (72°F) | 14°C (57°F) | 0" |
| 1974 | 20°C (68°F) | 8°C (46°F) | 0.04" |
| 1973 | 13°C (55°F) | 1°C (33°F) | 0" |
| 1972 | 16°C (60°F) | 11°C (51°F) | 0.13" |
| 1971 | 13°C (55°F) | 4°C (40°F) | 0" |