Heilbronn weather in July

In July, Heilbronn sees average daytime highs of 24°C and overnight lows near 14°C, with 74 mm of rain across 12.7 wet days and about 15.6 hours of daylight. It is the 1st-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 23°C in the first days to 25°C by the end. The sky is clear or mostly clear about 28% of the time in July, and the air most often feels dry.

Daylight stretches from about 16 hours at the start of July to 15 hours by month's end. Set against the rest of the year, July is Heilbronn's 2nd-clearest and 10th-windiest month. For the whole year in context, see Heilbronn's year-round climate.

Daytime high
24°
1st warmest
Overnight low
14°
12th coldest
Rainfall
74 mm
12.7 wet days
Daylight
15 h 36 min
4:40 AM – 8:17 PM
Cloud cover
58%
2nd clearest
Wind
9 km/h
10th windiest
Solar energy
5.48 kWh/m²
Travel score
6.5
out of 10
Air quality
Moderate
PM2.5 11.6 µg/m³ · 2019

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 23°C in the first days to 25°C by the end.

A typical July day in Heilbronn reaches about 24°C in the afternoon and slips back to 14°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 30°C. Set against its neighbours, July runs about 2°C warmer than June and on par with August.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12314
22314
32314
42414
52414
62414
72414
82414
92414
102414
112414
122414
132414
142414
152414
162414
172415
182415
192415
202415
212515
222515
232515
242515
252515
262515
272515
282515
292515
302515
312515

How July really feels in Heilbronn

Once humidity and wind are folded in, July averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

July sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Heilbronn weather by month

How July compares with the rest of the year at a glance. July is the 1st-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -1°7612.34.48.50.0
Feb / -1°6611.34.39.80.2
Mar10° / 7612.5211.62.0
Apr15° / 5210.40.213.44.2
May19° / 7913.10155.5
Jun22° / 13°6612.2015.96.2
Jul24° / 14°7412.7015.66.5
Aug24° / 14°6211.1014.26.7
Sep19° / 11°6310.3012.46.0
Oct14° / 7211.80.110.53.7
Nov / 7211.61.48.91.1
Dec / 9014.64.78.10.0

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 20% of July, with mostly cloudy or overcast conditions the remaining 52%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14852
24852
34753
44753
54753
64753
74753
84654
94654
104654
114654
124654
134555
144555
154753
164753
174753
184753
194852
204753
214852
224951
234951
244951
255050
265050
275149
285149
295149
305248
315248

Chance of precipitation in July

Any precipitation

Heilbronn gets around 74 mm of rain over 12.7 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 41% and peaks near 44% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
138
238
339
440
541
641
742
843
943
1044
1144
1244
1344
1444
1543
1643
1743
1842
1942
2041
2141
2240
2340
2439
2538
2638
2737
2837
2936
3036
3136

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

Most of July feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, July lands in the dry band about 51% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
15732101
25633101
35633101
45633101
55633110
65534110
75534110
85534110
95534110
105434120
115434120
125434120
135334130
145433130
155333140
165333140
175233150
185133160
195133160
204934170
214834170
224834180
234735180
244635180
254635190
264536190
274436190
284437190
294338190
304339180
314239180

Wind in July

Winds average 9 km/h in July.

Across July, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 16 hours at the start of July to 15 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 60 minutes over July. Sunrise moves from 4:28 AM to 4:58 AM, and sunset from 8:25 PM to 8:00 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
116.04:288:25
215.94:288:25
315.94:298:25
415.94:308:24
515.94:308:24
615.94:318:24
715.94:328:23
815.84:338:23
915.84:338:22
1015.84:348:22
1115.84:358:21
1215.74:368:20
1315.74:378:20
1415.74:388:19
1515.74:398:18
1615.64:408:17
1715.64:418:17
1815.64:428:16
1915.54:438:15
2015.54:458:14
2115.44:468:13
2215.44:478:12
2315.44:488:10
2415.34:498:09
2515.34:518:08
2615.34:528:07
2715.24:538:06
2815.24:548:04
2915.14:568:03
3015.14:578:02
3115.04:588:00

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5.48 kWh/m².

For context, solar energy here swings from a low near 0.75 kWh/m² to a high of 5.6 kWh/m² in June across the year — July's 5.48 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.6Bright
55.6Bright
65.6Bright
75.6Bright
85.5Bright
95.5Bright
105.5Bright
115.5Bright
125.5Bright
135.5Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.5Bright
195.4Bright
205.4Bright
215.4Bright
225.4Bright
235.4Bright
245.4Bright
255.4Bright
265.4Bright
275.4Bright
285.4Bright
295.3Bright
305.3Bright
315.3Bright
Planning a trip in July

Is July a good time to visit Heilbronn?

Our two travel scores rate July for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.5
Sightseeing
2nd-best month of the year
5.6
Beach & pool
1st-best month of the year

July is a reasonable time to visit Heilbronn for sightseeing.

What to pack for Heilbronn in July

From July's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In July, Heilbronn sees daytime highs around 24°C and nights near 14°C. Worth packing: light clothes, rain gear and sun protection. About 13 days see rain.

light clothesrain gearsun protection

UV index in Heilbronn in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Heilbronn peaks around July 15 at about 7 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near January 1 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 15UV 7Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr4Moderate
May6High
Jun7High
Jul8Very high
Aug6High
Sep4Moderate
Oct3Moderate
Nov1Low
Dec1Low

Air quality in Heilbronn in July

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where July falls, not just the annual average.

Air quality in Heilbronn is worst in April — around 15 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (November, 8 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Heilbronn's WHO annual average of 11.6 µg/m³.

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1715 µg/m³Nov 238 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb10Good
Mar13Moderate
Apr15Moderate
May14Moderate
Jun15Moderate
Jul12Moderate
Aug13Moderate
Sep12Good
Oct10Good
Nov8Good
Dec8Good
Location & terrain

Where is Heilbronn?

Heilbronn sits at 49.1°N, 9.2°E, 173 m above sea level, in Germany. The nearest listed city is Neckarsulm, 5.0 km away.

Topography around Heilbronn

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Heilbronn.

Within 3 km, the terrain around Heilbronn has only modest variations in elevation — a maximum elevation change of 181 m around an average of 196 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 416 m; within 80 km, large variations in elevation — a maximum elevation change of 910 m.

The land around Heilbronn is covered by artificial surfaces (43%) and trees (34%) within 3 km, cropland (37%) and trees (31%) within 16 km, and trees (47%) and cropland (28%) within 80 km.

3 km
181 m
16 km
416 m
80 km
910 m
treesgrasslandcroplandartificial surfaceswater
July weather nearby: Neckarsulm 5.0 km · Brackenheim 13 km · Bad Rappenau 14 km · Öhringen 22 km · Eppingen 22 km · Marbach am Neckar 22 km · Sachsenheim 23 km · Bietigheim-Bissingen 23 km

Germany travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 80% of US
price level, 2025
GDP per capita
$60,496
2025
Happiness
6.9 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
0.9
per 100k, 2023
Road deaths
3.8
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 615
Religion
none 44%Roman Catholic 25%Protestant 23%other 5%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Heilbronn (49.1399°, 9.2205°, elevation 173 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).