Weather in Riga in September
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Book now, pay at pickup — compare Hertz, Avis, Budget, Sixt and 800+ rental companies for September in Riga.
Compare car hire prices → Affiliate link — we earn a commission at no extra cost to youIn September, Riga sees average highs of 17.3°C (63.1°F) and lows of 10.0°C. Conditions are pleasantly mild and moderately rainy (11 rainy days), with roughly 9.6 hours of sunshine a day. This is peak season for good reason — conditions are close to ideal. For the complete picture, see the best time to visit Riga — every month compared. Once you know when to go, find your Riga packing list at 247PackingList.
Get ready for Riga in September
Search flights to Riga
Compare 100+ airlines for September — one search, best price.
Search Flights →Thermal travel layers
Pack proper layers — winters are genuinely cold and evenings drop fast year-round.
Check Price →What to pack for Riga in September
- Warm layers
- Light jacket or fleece
- Comfortable walking shoes
- Light waterproof layer
Compare all months in Riga
| Month | High | Rain | Rating |
|---|---|---|---|
| January | 1.6°C | 63.5mm | 8/10 |
| February | 1.9°C | 51.9mm | 8/10 |
| March | 5.8°C | 44.9mm | 10/10 |
| April | 10.3°C | 30.0mm | 10/10 |
| May | 15.4°C | 66.0mm | 10/10 |
| June | 22.9°C | 73.7mm | 10/10 |
| July | 22.8°C | 82.2mm | 10/10 |
| August | 22.4°C | 111.9mm | 9/10 |
| September | 17.3°C | 53.3mm | 10/10 |
| October | 11.9°C | 86.4mm | 10/10 |
| November | 5.5°C | 55.9mm | 10/10 |
| December | 0.2°C | 57.2mm | 8/10 |
Full month-by-month guide: best time to visit Riga →
For facts about Latvia — currency, language and dialling code — see our Latvia country guide at 247CountryInfo. Travellers also find it useful to keep a Riga travel guide to hand. Check clothing sizes in Latvia before you shop.
Frequently Asked Questions
Is September a good time to visit Riga?
September rates 10/10 for visiting Riga — excellent time to visit. Expect average highs of 17.3°C, 53.3mm of rain across the month and about 9.6 hours of daily sunshine.
What is the temperature in Riga in September?
In September, Riga has average highs of 17.3°C (63.1°F) and average lows of 10.0°C (50.0°F).
Does it rain in Riga in September?
Not much. September averages just 53.3mm of rain in Riga — the odd shower is possible but most days stay dry.
What should I wear in Riga in September?
For Riga in September (17.3°C highs / 10.0°C lows), pack warm layers plus light jacket or fleece, comfortable walking shoes, light waterproof layer.
More essentials for Riga in September
Packing cubes
Keep the bag organised whatever the weather — compression cubes for every size.
Check Price →Travel first aid kit
Compact TSA-friendly kit for peace of mind wherever you travel.
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Climate data sourced from Open-Meteo (open source, open data licence). Monthly averages calculated from 2020–2023 historical data. Weather can be unpredictable — always check a live forecast before travelling.