Month guide · Riga · Latvia
Riga in September
What September is really like in Riga: weather, crowds, prices, events and what to pack.
Updated By the AMZBooking editorial team
Photo: Diliff, CC BY-SA 3.0
Quick answer
September is one of the best months to visit Riga. Expect average highs of 17°C (63°F), lows of 8°C (46°F), about 10 rainy days and roughly 12.7 hours of daylight. Mild and quieter, with autumn colour starting in the parks and Gauja valley; a good month for day trips.
Key facts
- Average high / low
- 17°C (63°F) / 8°C (46°F)
- Rainy days
- About 10
- Daylight
- About 12.7 hours
- Sea temperature
- 15°C (59°F)
- Crowds
- Moderate
- Hotel prices
- Average
Weather in September
September is the 5th-warmest month in Riga: days average 17°C (63°F) against a yearly average high of 11°C (52°F), and nights fall to about 8°C (46°F). Rain falls on roughly 10 of its 30 days. Compared with August (22°C (72°F)), September is cooler; by October highs drop to around 10°C (50°F).
- Sunrise (15 September)
- About 06:54
- Sunset (15 September)
- About 19:43
- Daylight
- About 12.7 hours
- Sea
- 15°C (59°F)
Autumn (September–November). Mild September and golden early October, then grey skies, national-holiday candles and the light festival in November.
Crowds and prices
On a 1–5 scale, September rates 3 for crowds (the peak is July at 5) and 3 for hotel prices (highest in June). Prices sit in the middle of the year's range.
Events in September
September has no major recurring festival in Riga, which usually means easier bookings.
What to do in September
With frequent rain, plan around indoor sights and keep outdoor time flexible.

Gallery · City Centre
Latvian National Museum of Art
Go up to the rooftop terrace for a view over the Esplanāde and the Nativity of Christ Cathedral.
- Time needed
- 2 hours
- Cost
- Mid-priced
- Art
- Rainy day
- Architecture
Architecture · Pārdaugava
National Library of Latvia
The 'Castle of Light', designed by Latvian-American architect Gunnar Birkerts and opened in 2014, rises in a glass-topped peak on the left bank of the Daugava.
- Time needed
- 1 hour
- Cost
- Free
- Free
- Architecture
- Views
- Rainy day
Gallery · Old Riga
Art Museum Riga Bourse
Visit when the Old Town streets are busy; the building's interiors are as much the attraction as the collection.
- Time needed
- 1–1.5 hours
- Cost
- Mid-priced
- Art
- Rainy day
- Architecture
- Off the beaten path

Museum · Mežciems
Riga Motor Museum
Reopened in 2016 in a modern building in the eastern suburbs, the museum displays cars and motorbikes from the early 1900s onwards, including vehicles used by Soviet leaders, among them a Rolls-Royce crashed by Leonid Brezhnev.
- Time needed
- 1.5–2 hours
- Cost
- Mid-priced
- Kids
- Rainy day
- History
What to pack
For highs near 17°C, lows near 8°C and 10 wet days: layers, a warm sweater and a jacket for cool evenings; a packable rain jacket for showers; comfortable walking shoes.
Is September a good time to visit Riga?
One of the best months to visit Riga. The other best months are May–August. Compare every month.
Riga in other months
Questions travellers ask
+Is September a good time to visit Riga?
It is one of the best months to visit Riga. Mild and quieter, with autumn colour starting in the parks and Gauja valley; a good month for day trips.
+How warm is Riga in September?
Average highs are around 17°C (63°F) and lows around 8°C (46°F).
+Does it rain a lot in Riga in September?
Expect rain on about 10 days of the month.