Weather in Mainz for September 2025
In general, the average temperature in Mainz at the beginning of September is 26.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 18.9 °C by the end of September.
The climate of Mainz in September is notably wet, with an average of 12 rainy days, and a total of 48.3 mm of precipitation.
Is September a good time to visit Mainz? check out the best time to travel to Mainz page.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
Mainz in September average weather
Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
---|---|---|---|---|---|---|
1 24° | 2 27° | 3 27° | 4 24° | 5 28° | 6 24° | 7 29° |
8 26° | 9 24° | 10 25° | 11 23° | 12 21° | 13 18° | 14 20° |
15 22° | 16 21° | 17 24° | 18 24° | 19 23° | 20 24° | 21 25° |
22 21° | 23 19° | 24 18° | 25 19° | 26 19° | 27 20° | 28 20° |
29 19° | 30 17° |
You can click on date
Temperatures trend during September in Mainz
September weather day by day
Date | Weather | Temperatures | Rain | UV | More |
---|---|---|---|---|---|
1 Sept. | Light rain shower | 24° /16° | 6.1 mm | 5 | |
2 Sept. | Fog | 27° /17° | 1.7 mm | 6 | |
3 Sept. | Sunny | 27° /18° | 0.1 mm | 7 | |
4 Sept. | Sunny | 24° /16° | 0.2 mm | 6 | |
5 Sept. | Sunny | 28° /17° | 0.7 mm | 7 | |
6 Sept. | Sunny | 24° /16° | 0.7 mm | 6 | |
7 Sept. | Sunny | 29° /17° | 0 mm | 7 | |
8 Sept. | Sunny | 26° /16° | 0.9 mm | 6 | |
9 Sept. | Sunny | 24° /16° | 4.3 mm | 6 | |
10 Sept. | Sunny | 25° /16° | 0.1 mm | 6 | |
11 Sept. | Overcast | 23° /15° | 2.4 mm | 6 | |
12 Sept. | Thundery outbreaks possible | 21° /13° | 4 mm | 5 | |
13 Sept. | Overcast | 18° /12° | 0.2 mm | 5 | |
14 Sept. | Cloudy | 20° /12° | 0 mm | 5 | |
15 Sept. | Partly cloudy | 22° /11° | 0 mm | 6 | |
16 Sept. | Partly cloudy | 21° /14° | 1.3 mm | 6 | |
17 Sept. | Partly cloudy | 24° /14° | 0.4 mm | 7 | |
18 Sept. | Patchy rain possible | 24° /16° | 1.7 mm | 6 | |
19 Sept. | Overcast | 23° /15° | 0.1 mm | 5 | |
20 Sept. | Partly cloudy | 24° /14° | 0 mm | 7 | |
21 Sept. | Patchy light rain | 25° /14° | 4.9 mm | 6 | |
22 Sept. | Light rain shower | 21° /14° | 1 mm | 5 | |
23 Sept. | Patchy rain possible | 19° /12° | 0.5 mm | 4 | |
24 Sept. | Sunny | 18° /12° | 1 mm | 5 | |
25 Sept. | Sunny | 19° /12° | 1 mm | 5 | |
26 Sept. | Sunny | 19° /13° | 14.4 mm | 5 | |
27 Sept. | Overcast | 20° /13° | 0.2 mm | 5 | |
28 Sept. | Sunny | 20° /12° | 0.3 mm | 5 | |
29 Sept. | Patchy rain possible | 19° /12° | 0 mm | 4 | |
30 Sept. | Sunny | 17° /11° | 0.3 mm | 5 | |
Next |
Mainz in September - FAQ
What to pack to Mainz in September?
As you prepare for your trip to Mainz 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 Mainz, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Layered Clothing: Light sweaters, long-sleeve shirts, light jackets, and comfortable pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Umbrellas/Raincoats: For rainy days
September rainfall patterns in Mainz
UV exposure in Mainz during September
Quick links
Get accurate weather forecasts for Mainz, located at latitude 49.984 and longitude 8.279. Stay updated with localized weather information tailored for Mainz.