Riga weather in September
Riga in September averages 13°C (55°F) and 52 mm of rain.
Of the twelve months in Riga, September is the fourth warmest and the fifth wettest.
- Average temp
- 13°C (55°F)
8–18°C · 47–64°F
- Rainfall
- 52 mm
Showers likely
- Sunshine
- —
What is Riga like in September?
Daytime
Days are cool.
Rain
Some rain is likely; pack for showers.
Evening
Evenings are cooler. A layer helps after sunset.
What should I pack for Riga in September?
A light rain jacket
About 52 mm falls this month — showers rather than washouts.
A warm mid-layer
Nights drop to around 8°C (47°F).
September compared with August and October
September in Riga is 4.8°C cooler than August and 17 mm drier than it, which averages 18°C (64°F).
September in Riga is 5.6°C warmer than October and 12 mm drier than it, which averages 7°C (45°F).
Daylight in Riga in September
On 15 September the sun is up for 12 hours 46 minutes in Riga, rising about 06:54 and setting about 19:40 local time.
September ends 2 hours 18 minutes shorter than it begins, so the last week of the month is a different length of day from the first.
That is 5 hours 5 minutes short of June, the longest-lit month here.
Where to stay in Riga
Dates are a starting point for September.
Travel guides for Riga
What to read before you book.
Riga weather by month
TemperatureRainfall
How September compares with the rest of the year
September is highlighted. Every other month links to its own page.
| Month | Average | Rainfall |
|---|---|---|
| January | -3°C / 27°F | 39 mm |
| February | -3°C / 27°F | 30 mm |
| March | 1°C / 34°F | 30 mm |
| April | 7°C / 45°F | 30 mm |
| May | 12°C / 53°F | 42 mm |
| June | 16°C / 60°F | 68 mm |
| July | 18°C / 65°F | 78 mm |
| August | 18°C / 64°F | 69 mm |
| September | 13°C / 55°F | 52 mm |
| October | 7°C / 45°F | 64 mm |
| November | 3°C / 37°F | 45 mm |
| December | -1°C / 30°F | 41 mm |
Check another month
This is the month you are reading. Change either side to look at another.
FAQs about Riga in September
September climate averages for Riga, 1991–2020.
Riga averages 13°C (55°F) in September, ranging from about 8°C (47°F) at night to 18°C (64°F) in the afternoon. That is a 1991–2020 average, so an individual week can run either side of it.
Some. About 52 mm falls across September, enough to need a light jacket but not enough to reshape a trip.
Yes. September averages 13°C (55°F) against 7°C (45°F) in October — 5.6°C warmer.
September is 4.8°C cooler than August, and 17 mm drier.
Yes. September falls inside the most comfortable stretch of the year here, April to September, on temperature and rainfall together.
This page does not show today's weather. It is a 1991–2020 climate normal from Meteostat — a long-run average of what September is usually like, which is what you want when booking months ahead. For today or the coming week, check a live forecast.
About 12 hours 46 minutes of daylight in mid-September, against 17 hours 51 minutes in June and 6 hours 46 minutes in December.
On 15 September, sunrise is about 06:54 and sunset about 19:40 local time. Both shift across the month — the month ends 2 hours 18 minutes shorter than it starts.
