Early autumn · Weather & things to do
Riga in September
Riga cools off: highs slip to 62°F (17°C), from 70°F in August, with lows of 49°F (10°C) and about 2.3 in (59 mm) of rain.
At 81/100 for comfort (4th of 12), it's one of the best months to visit.
- Avg high
- 62°F (17°C)
- Avg low
- 49°F (10°C)
- Rain
- 2.3 in (59 mm)
- Humidity
- 84%
- Cloud cover
- 68%
- Daylight
- ~12 h 27 min
- Comfort score
- 81/100 · Great
What September feels like
Days are mild at around 62°F (17°C): comfortable for walking all day, with a layer for the evening.
After dark, temperatures fall to about 49°F (10°C).
Rain is moderate at about 2.3 in (59 mm) for the month.
Plan around September
September is one of Riga's best months on the climate data.
- Last of the best-scoring months: by October, the score drops to 55/100.
- Comfort slips from 84/100 in August to 81/100.
- Our Tallinn & Riga route is planned for Late Nov – Dec, a window set by the holiday season rather than the weather — September falls outside it.
What to pack for September
- A warm layer for eveningsnights drop to 49°F
- Comfortable walking shoesmost places below are best reached on foot or with short walks
What to do in Riga in September
September is good outdoor weather here, so these picks lean toward the open air.
House of the Blackheads
Ornate Dutch Renaissance guild house of the Brotherhood of Blackheads, rebuilt in 1999 after wartime destruction.
Riga Art Nouveau Museum
Restored 1903 apartment at Alberta iela 12 with original furniture and a painted spiral staircase.
Riga Christmas Market
Red-and-white striped stalls and a tall tree on Dome Square, beside Riga Cathedral, selling mittens, honey and hot food.
Riga Central Market
Market in five former Zeppelin hangars by the river, with halls for fish, meat, dairy and smoked foods.
Why now September scores 81/100 for comfort, good conditions for being outside.
Black Magic
Dark wood cafe-bar on Kaļķu iela pouring Riga Black Balsam cocktails, with handmade chocolates.
Nearby in September
- Tallinn in September~173 mi · highs 60°F, 2.2 in rain · 1°C (2°F) cooler by day, about as wet
- Helsinki in September~225 mi · highs 59°F, 2.5 in rain · 2°C (3°F) cooler by day, about as wet
- Stockholm in September~275 mi · highs 62°F, 2.2 in rain · similar daytime temperatures, about as wet
NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Riga in September: quick answers
Is September a good time to visit Riga?
Yes. On the climate data it's one of the best months, scoring 81/100. Expect highs of 62°F (17°C) and 2.3 in (59 mm) of rain.
How cold is Riga in September?
Average highs are 62°F (17°C) and average lows 49°F (10°C), making it the 4th-warmest month by daytime highs.
Does it rain a lot in Riga in September?
Not much: about 2.3 in (59 mm) of rain falls across September on average, the 5th-driest month of the year. The annual total is about 30.1 in (764 mm).
What should I pack for Riga in September?
Bring a warm layer for evenings (nights drop to 49°F) and comfortable walking shoes (most places below are best reached on foot or with short walks).
More on Riga
Planning Riga in September?
Plan it together in TripsCircle: one itinerary, one shared packing list and costs split as you go.