Weather in Riga in September
In an average September, Riga sees a daily high around 17°C and a low around 9°C, based on 1980–2026 of local climate records.
| Average high | 17°C |
|---|---|
| Typical high range | 13°C to 21°C |
| Average low | 9°C |
| Typical low range | 5°C to 13°C |
| Average daily precipitation | 3 mm |
September records
The most extreme September on record for each metric, across 1980–2026. For rainfall, the wettest and driest are by total September accumulation.
High
Highest
29°C
1992-09-01
Lowest
7°C
1986-09-26
Low
Highest
17°C
2025-09-07
Lowest
-1°C
1993-09-30
Feels-like
Highest
31°C
2024-09-04
Lowest
-7°C
1986-09-28
Humidity
Highest
15.6 g/m³
2025-09-07
Lowest
4.4 g/m³
1986-09-28
Wind
Highest
41 km/h
2017-09-14
Lowest
5 km/h
2014-09-03
Gust
Highest
88 km/h
1983-09-23
Lowest
13 km/h
2003-09-07
Precip
Wettest
142 mm
2017
Driest
20 mm
2016
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