Heidelberg
May
Weather in Heidelberg for May 2025
Your guide to Heidelberg weather in May - trends and predictions
In general, the average temperature in Heidelberg at the beginning of May is 18.1 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 21.9 °C by the end of May.
Heidelberg sees moderate rainfall in May, averaging 9 rainy days.
Is May a good time to visit Heidelberg? check out the best time to travel to Heidelberg page.
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22
Dry days
9
Rainy days
0
Snow days
22°/10°
Temperatures
14 km/h
Avg max wind
72 %
Avg humidity
Heidelberg in May average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  21° | 2  16° | 3  16° | 4  16° | |||
| 5 21° | 6 18° | 7 19° | 8 18° | 9 20° | 10 19° | 11 19° |
| 12 20° | 13 20° | 14 22° | 15 18° | 16 17° | 17 15° | 18  19° |
| 19 19° | 20 21° | 21  22° | 22 21° | 23 19° | 24 18° | 25 22° |
| 26 23° | 27 21° | 28 22° | 29 22° | 30 21° | 31 22° |
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Temperatures trend during May in Heidelberg
See the weather trend as well as the moving average line
May weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 May | Moderate rain at times | 21° /11° | 1.2 mm | 5 | |
| 2 May | Patchy rain possible | 16° /10° | 3.1 mm | 4 | |
| 3 May | Sunny | 16° /6° | 0.7 mm | 5 | |
| 4 May | Overcast | 16° /8° | 3.1 mm | 4 | |
| 5 May | Patchy rain possible | 21° /11° | 3.6 mm | 5 | |
| 6 May | Patchy rain possible | 18° /11° | 5.4 mm | 4 | |
| 7 May | Patchy rain possible | 19° /10° | 4.9 mm | 4 | |
| 8 May | Moderate rain at times | 18° /10° | 3.8 mm | 4 | |
| 9 May | Moderate or heavy rain shower | 20° /11° | 7.4 mm | 5 | |
| 10 May | Moderate rain at times | 19° /10° | 2.7 mm | 5 | |
| 11 May | Patchy rain possible | 19° /10° | 0.9 mm | 5 | |
| 12 May | Moderate rain at times | 20° /11° | 1.8 mm | 5 | |
| 13 May | Patchy rain possible | 20° /11° | 2.2 mm | 5 | |
| 14 May | Patchy rain possible | 22° /11° | 0.5 mm | 5 | |
| 15 May | Moderate rain at times | 18° /11° | 2.8 mm | 5 | |
| 16 May | Patchy rain possible | 17° /11° | 8.3 mm | 4 | |
| 17 May | Overcast | 15° /8° | 5.7 mm | 4 | |
| 18 May | Partly cloudy | 19° /7° | 0.6 mm | 5 | |
| 19 May | Overcast | 19° /9° | 2.1 mm | 4 | |
| 20 May | Overcast | 21° /10° | 0 mm | 5 | |
| 21 May | Cloudy | 22° /12° | 1.7 mm | 5 | |
| 22 May | Moderate rain at times | 21° /13° | 1.6 mm | 5 | |
| 23 May | Patchy rain possible | 19° /11° | 4.5 mm | 5 | |
| 24 May | Cloudy | 18° /10° | 1.1 mm | 4 | |
| 25 May | Partly cloudy | 22° /9° | 0.6 mm | 6 | |
| 26 May | Partly cloudy | 23° /11° | 0.3 mm | 6 | |
| 27 May | Sunny | 21° /11° | 2.7 mm | 6 | |
| 28 May | Sunny | 22° /10° | 0.5 mm | 5 | |
| 29 May | Partly cloudy | 22° /12° | 3.4 mm | 6 | |
| 30 May | Partly cloudy | 21° /11° | 5.3 mm | 5 | |
| 31 May | Sunny | 22° /11° | 2 mm | 6 | |
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Important Notice
Our weather forecast for Heidelberg in May 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 Heidelberg forecast closer to your planned date for the most up-to-date weather information.
Heidelberg in May - FAQ
What are the expected maximum and minimum temperatures in Heidelberg during May?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Heidelberg during May?
Significant rainfall exceeding 168.9 mm is expected in Heidelberg during May, occurring over more than 9 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Heidelberg during May?
The average wind speed in Heidelberg during May is 14 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Heidelberg in May?
As you prepare for your trip to Heidelberg in May, 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 Heidelberg, during May, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Warm Clothing: Sweaters, hoodies, long 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
- 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
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