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.
Riga sees moderate rainfall in September, averaging 7 rainy days.
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23
Dry days
7
Rainy days
0
Snow days
20°/12°
Temperatures
17 km/h
Avg max wind
74 %
Avg humidity
Riga in September average weather
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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 20° 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 42 mm across approximately 7 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 17 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Riga in September?
As you prepare for your trip to Riga in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Riga, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Warm Clothing: Sweaters, hoodies, long pants
- Rain Gear: Lightweight, waterproof clothing
- Accessories
- Scarves: To protect you from the cold wind
- Gloves/Mittens: Essential for cold weather
- Warm Hats: Warm hats for insulation in cold weather
- Umbrellas/Raincoats: For rainy days
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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