Riga
September
Weather in Riga for September 2025
Your guide to Riga weather in September - trends and predictions
In general, the average temperature in Riga at the beginning of September is 21.4 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 18.6 °C by the end of September.
The climate of Riga in September is notably wet, with an average of 12 rainy days, and a total of 32.5 mm of precipitation.
Temperatures
Rain 🌧️
18
Dry days
12
Rainy days
0
Snow days
21°/12°
Temperatures
16 km/h
Avg max wind
70 %
Avg humidity
Riga Weather September
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  18° | 2 20° | 3 22° | 4  24° | 5  24° | 6  21° | 7 21° |
| 8  23° | 9 23° | 10  21° | 11 23° | 12 22° | 13 22° | 14 21° |
| 15 18° | 16 22° | 17 23° | 18 21° | 19 21° | 20 18° | 21 21° |
| 22 21° | 23 20° | 24 20° | 25 19° | 26 19° | 27 20° | 28 20° |
| 29 17° | 30 15° |
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Temperatures trend during September in Riga
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Light rain shower | 18° /12° | 5.1 mm | 4 | |
| 2 Sept. | Light rain shower | 20° /12° | 9.5 mm | 5 | |
| 3 Sept. | Light rain shower | 22° /12° | 2.1 mm | 5 | |
| 4 Sept. | Mist | 24° /13° | 0 mm | 6 | |
| 5 Sept. | Cloudy | 24° /14° | 0 mm | 6 | |
| 6 Sept. | Overcast | 21° /12° | 0 mm | 5 | |
| 7 Sept. | Overcast | 21° /11° | 0 mm | 6 | |
| 8 Sept. | Sunny | 23° /12° | 0 mm | 7 | |
| 9 Sept. | Mist | 23° /13° | 0 mm | 6 | |
| 10 Sept. | Partly cloudy | 21° /13° | 1.7 mm | 5 | |
| 11 Sept. | Sunny | 23° /14° | 0.9 mm | 6 | |
| 12 Sept. | Sunny | 22° /13° | 0 mm | 6 | |
| 13 Sept. | Partly cloudy | 22° /15° | 0.6 mm | 6 | |
| 14 Sept. | Overcast | 21° /13° | 1.3 mm | 5 | |
| 15 Sept. | Partly cloudy | 18° /12° | 0 mm | 5 | |
| 16 Sept. | Sunny | 22° /11° | 0 mm | 6 | |
| 17 Sept. | Overcast | 23° /12° | 0 mm | 6 | |
| 18 Sept. | Cloudy | 21° /12° | 0 mm | 6 | |
| 19 Sept. | Light rain shower | 21° /13° | 1.2 mm | 5 | |
| 20 Sept. | Patchy rain possible | 18° /12° | 0.1 mm | 5 | |
| 21 Sept. | Sunny | 21° /12° | 0 mm | 6 | |
| 22 Sept. | Sunny | 21° /11° | 0 mm | 6 | |
| 23 Sept. | Light rain shower | 20° /11° | 1 mm | 5 | |
| 24 Sept. | Patchy rain possible | 20° /11° | 0 mm | 5 | |
| 25 Sept. | Sunny | 19° /11° | 0.4 mm | 5 | |
| 26 Sept. | Cloudy | 19° /11° | 1.6 mm | 5 | |
| 27 Sept. | Partly cloudy | 20° /14° | 3.4 mm | 5 | |
| 28 Sept. | Sunny | 20° /12° | 1.1 mm | 5 | |
| 29 Sept. | Overcast | 17° /10° | 0.7 mm | 4 | |
| 30 Sept. | Light rain shower | 15° /9° | 1.7 mm | 4 | |
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Important Notice
Our weather forecast for Riga in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Riga forecast closer to your planned date for the most up-to-date weather information.
Riga in September - FAQ
What are the expected maximum and minimum temperatures in Riga during September?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Riga during September?
In September, Riga can expect light to moderate rainfall, totaling 32.5 mm across approximately 12 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Riga during September?
The average wind speed in Riga during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Riga
Explore the daily rainfall trends and prepare for Rigas September weather 💧
UV exposure in Riga during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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