July Weather in Koeln, Germany

Last updated: February 26, 2025

In Cologne, Germany, July brings a dynamic climate characterized by a maximum temperature soaring up to 40°C (104°F), while the average sits comfortably at around 20°C (68°F). Expect mild evenings with a minimum temperature dipping to 8°C (48°F). This month also witnesses notable precipitation, with a total of 97 mm (3.8 in) spread over 12 days, contributing to the city's lush greenery. Overall, humidity levels hover around 72%, creating a warm but often humid atmosphere, perfect for experiencing Cologne’s vibrant summer allure.

July Temperature in Koeln

In July, Koeln, Germany, experiences a vibrant summer, with temperatures reflecting the season's warmth. The month starts with a minimum of 8°C (48°F), allowing for comfortable evenings, while daytime averages rise to a pleasant 20°C (68°F). However, the real highlight is the peak temperature that can soar to an impressive 40°C (104°F), showcasing the potential for heatwaves that turn the city into a lively hub of outdoor activities and events. This pattern of rising temperatures from June to July indicates a notable summer trend, encouraging both locals and visitors to bask in the long, sunny days.

July Weather in Koeln: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Koeln, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec384145505766676760544541
Data source: Temperature data for Koeln generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

July Precipitation in Koeln

In July, Koeln experiences a noticeable uptick in precipitation, with 97 mm (3.8 in) of rain recorded over 12 days. This marks it as one of the wetter months of the year, reflecting a shift from the drier spells earlier in spring. While April had a mere 38 mm (1.5 in) of rainfall, the summer months bring increased humidity and precipitation, with July and October sharing the highest rainfall totals. Interestingly, the pattern of precipitation days shows a steady increase leading into the summer, with July's 12 rainy days blending seamlessly into the warmer climate that characterizes the region at this time. Overall, July stands out as a pivotal month, balancing warm temperatures with refreshing showers that nurture the vibrant greenery of Koeln.

July Precipitation Trends in Koeln

The chart displays monthly precipitation patterns in Koeln, with values for each month alongside July's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec9186913866609778659767127
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in Koeln

In Koeln, Germany, July marks a noticeable dip in humidity, recorded at 72%. This trend of decreasing moisture levels begins around June and continues through August, reflecting a shift towards drier summer months. The July humidity is the lowest of the year, following a gradual decrease from a high of 91% in January. Interestingly, as summer unfolds, the humidity levels trend downward, illustrating a pattern of increased comfort as temperatures rise. However, as autumn approaches, we see a significant rebound, with humidity levels climbing back to 81% by September, suggesting the city's weather is dynamic and ever-changing throughout the year.

July Average Humidity in Koeln

This chart illustrates the average monthly humidity levels in Koeln, with July's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how July's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec91%90%87%84%77%74%72%71%81%88%91%92%
Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Koeln

In Koeln, Germany, the UV Index peaks sharply in the summer months, with July mirroring June at a striking 8, indicating a very high exposure category. This trend highlights the need for protection as sunburn can occur in just 15 minutes of sun exposure. Gradually climbing from January's modest 1 in the winter, the index rises steadily, reaching 7 in May before spiking to 8 in both June and July. As summer wanes, the index drops back down to 7 in August and stabilizes at 5 in September, showing a clear seasonal pattern influenced by the strength of sunlight. For detailed insights and daily updates, visit Koeln UV Index.

Maximum UV Index Levels in Koeln for July

The chart shows the monthly maximum UV Index (UVI) for Koeln in July, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec124578875421
Data source: Koeln July UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

July Sunshine in Koeln

July in Koeln, Germany, shines brightly as the sun graces the city with 405 hours of golden daylight, making it the sunniest month of the year. This peak in sunshine follows a steady climb from the relatively dull January, which only offers a mere 113 hours. The trend is clear: as the year progresses, residents and visitors alike can expect longer, sunnier days, with June already providing a generous 383 hours. After July, sunshine begins to wane, with August still holding onto a respectable 377 hours, but the gradual descent into autumn starts to set in. Overall, Koeln's progression into summer not only brings warmth but also a vibrant boost of daylight, creating an inviting atmosphere for outdoor activities and social gatherings.

Monthly Sunshine Duration in Koeln: July Highlighted

The July sunshine duration represents the total number of hours Koeln experiences direct sunlight during the month of July, excluding cloudy or obstructed periods. This chart compares the sunshine duration of July with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec113h202h267h336h387h383h405h377h313h232h183h129h
Data source: Koeln July Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Koeln During July

In Koeln, Germany, the likelihood of enjoying sunny weather in July reflects a moderate 31%, aligning closely with the trends observed in the preceding months. As we progress from the brighter days of March (41%) into the summer months, the chance of sunshine fluctuates but hovers around the early thirties in June and July. This pattern seems to suggest a consistent yet unpredictable summer climate, making it wise for residents and visitors alike to remain prepared for a mix of sunny moments and overcast skies. Fortunately, the sunshine returns with more vigor in August (33%) and September (36%), hinting that while July may not be the sunniest month, the warmth and beauty of Koeln's summer still beckon.

Percentage of Sunny Days in July in Koeln

The chart illustrates the percentage of sunny days in Koeln throughout the year, with July highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Koeln experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec9%32%41%38%29%31%31%33%36%28%23%13%
Data source: Koeln July chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Koeln in July

In Koeln, Germany, July marks a pivotal point in the summer season, boasting an impressive 15 hours of daylight. Although this is a slight decrease from June's peak of 16 hours, it still symbolizes the heart of summer when the days are long and vibrant. As the year unfolds, daylight gradually diminishes, with January's mere 8 hours feeling a distant memory. The progression from early spring, with just 11 hours in March, to the delightful brightness of late spring and early summer showcases the gradual increase in daylight, culminating in June. As the days begin to shorten in August, dipping to 14 hours, the transition towards autumn becomes evident, highlighting the cyclical nature of daylight in this enchanting city.

Average Daylight Hours in Koeln for July

The chart illustrates the variation in daylight duration in Koeln throughout the year, with July highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 27m10h11h 55m13h 52m15h 34m16h 27m15h 59m14h 27m12h 34m10h 38m8h 53m7h 58m
Data source: Koeln daylight hours, calculated by summing the hours between sunrise and sunset for each day.

July Winds in Koeln

In July, the wind in Köln, Germany presents a gentle breeze, averaging around 2.7 m/s (6 mph). This mild airflow marks a slight increase from the previous month but remains among the lowest averages of the year. Following a notable peak in April, where winds were brisker at 3.1 m/s (7 mph), July's conditions offer a contrast to the more turbulent spring months. As summer progresses, the overall trend shows a gradual decline in wind speeds, with the city experiencing its calmest days leading into late summer. While the wind might be soft, the vibrant atmosphere of Köln continues to thrive, making for delightful summer outings.

Average July Wind Speed in Koeln

The chart displays monthly wind speed patterns in Koeln, with values for each month shown alongside July's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how July's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.73.93.53.13.62.52.7 m/s3.02.43.82.83.5
Data source: Koeln July wind data, generated using information from the Copernicus Climate Change Service.

How July Weather in Koeln Compares to Other Months

The weather in Koeln changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of July's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Koeln and find detailed weather information for every month.

July and January present a striking contrast in weather patterns. In July, temperatures can range from a chilly 8°C (48°F) to a scorching 40°C (104°F), with an average of 20°C (68°F). The month often experiences 97 mm (3.8 in) of rainfall over 12 days and maintains a humidity level of 72%. In contrast, January brings much colder conditions, with temperatures dropping as low as -8°C (17°F) and averaging around 3°C (38°F), peaking at 15°C (59°F). Although precipitation is slightly less at 91 mm (3.6 in) over 15 days, the humidity is higher at 91%. For more detailed information, visit Koeln weather in January.

When comparing the weather in July and February, we notice significant differences. July boasts a temperature range from a chilly 8°C (48°F) at its lowest to a scorching 40°C (104°F) at its peak, with an average temperature of around 20°C (68°F). In contrast, February experiences much cooler temperatures, oscillating between a frigid -9°C (16°F) and a mild 20°C (68°F), with an average of 5°C (41°F).

Precipitation is also noteworthy; July experiences 97 mm (3.8 in) of rain over 12 days, while February sees slightly less, with 86 mm (3.4 in) spread across 13 days. Additionally, February's humidity is higher, peaking at 90%, compared to July's 72%. For detailed insights into February weather, check out Koeln weather in February.

When comparing the weather in July and March, it’s clear that July is significantly warmer, with temperatures ranging from a minimum of 8°C (48°F) to a scorching maximum of 40°C (104°F) and an average of 20°C (68°F). In contrast, March experiences much cooler temperatures, with a minimum of -9°C (16°F) and a maximum of 22°C (72°F), averaging around 7°C (45°F). Additionally, while July has 97 mm (3.8 in) of precipitation over 12 days, March is slightly wetter with 91 mm (3.6 in) over 15 days but has higher humidity at 87% compared to July’s 72%. For more detailed insights on the weather in March, you can explore Koeln weather in March.

When comparing the weather in July and April, there are notable differences in temperature and precipitation. July experiences higher temperatures, with a minimum of 8°C (48°F), an average of 20°C (68°F), and a maximum reaching up to 40°C (104°F). In contrast, April starts with much cooler conditions, featuring a minimum of -3°C (26°F) and an average of 10°C (51°F), peaking at 27°C (81°F). Additionally, July sees considerably more rain, totaling 97 mm (3.8 in) over 12 days, compared to April's milder 38 mm (1.5 in) across 9 days. Humidity levels also vary, with July at 72% and April higher at 84%. For more detailed information, you can check Koeln weather in April.

When comparing the weather in July and May, July typically presents a much warmer climate. The average temperature in July reaches 20°C (68°F), with maximums soaring up to 40°C (104°F), while May has a more moderate average of 14°C (57°F) and a maximum of 33°C (91°F). Additionally, July is characterized by higher humidity at 72% compared to May's 77%. Precipitation is more substantial in July, with 97 mm (3.8 in) over 12 days, compared to May's 66 mm (2.6 in) over 13 days, indicating that while May may be cooler, it also tends to be slightly wetter. For those interested in specific details about May weather trends, you can explore more here: Koeln weather in May.

In comparing the weather between June and July, we see notable differences in temperature and precipitation. July experiences a wider temperature range, with minimums of 8°C (48°F) and maximums soaring up to 40°C (104°F), averaging around 20°C (68°F). In contrast, June's temperatures are slightly cooler, with minimums at 8°C (46°F) and maximums reaching 35°C (95°F), giving an average of 19°C (67°F). Precipitation also increases in July, totaling 97 mm (3.8 in) over about 12 days, compared to June's 60 mm (2.4 in) over 10 days. Humidity remains relatively high in both months, with July at 72% and June at 74%. For more detailed information on June weather, you can check Koeln weather in June.

In July, temperatures typically range from a minimum of 8°C (48°F) to a maximum of 40°C (104°F), with an average of 20°C (68°F). The month also experiences considerable precipitation, totaling 97 mm (3.8 in) over approximately 12 days, contributing to a humidity level of 72%. In contrast, August sees slightly cooler temperatures, with a minimum of 7°C (44°F) and a maximum of 37°C (99°F), while maintaining the same average of 20°C (68°F). Precipitation in August decreases to 78 mm (3.1 in), occurring over 14 days, and humidity remains relatively stable at 71%. For more detailed weather insights, you can explore Koeln weather in August.

In July, the weather can be quite extreme with temperatures ranging from a minimum of 8°C (48°F) to a scorching maximum of 40°C (104°F), while the average temperature sits at a comfortable 20°C (68°F). This month also experiences considerable precipitation, with 97 mm (3.8 in) over 12 days and a humidity level of 72%.

In contrast, September sees a notable drop in temperatures, with a minimum of 3°C (37°F) and a maximum of 34°C (93°F), resulting in a cooler average of 16°C (60°F). Rainfall is somewhat less, totaling 65 mm (2.5 in) over 10 days, but humidity is slightly higher at 81%. The overall shift from July to September brings cooler conditions and less precipitation, making it a transitional period towards autumn. For more detailed weather insights, you can refer to Koeln weather in September.

In July, the weather is characterized by warm temperatures, with daily averages around 20°C (68°F) and peaks reaching as high as 40°C (104°F). The month experiences significant humidity at 72% and has about 12 days of precipitation, totaling 97 mm (3.8 in). In contrast, October brings a cooler climate, where temperatures range from a minimum of 1°C (34°F) to a maximum of 27°C (80°F), with an average of 12°C (54°F). The humidity increases to 88%, and although the precipitation remains the same at 97 mm (3.8 in), it occurs on more days—approximately 15. For more details on the weather conditions in October, visit Koeln weather in October.

In July, the weather is notably warmer, with average temperatures around 20°C (68°F) and highs reaching up to 40°C (104°F), making it one of the hottest months. However, July also sees substantial rainfall, with about 97 mm (3.8 in) over 12 days, and a humidity level of 72%. In contrast, November brings cooler temperatures with an average of 7°C (45°F), and a minimum reaching as low as -4°C (26°F). While November experiences less precipitation at 67 mm (2.6 in), it has more rainy days—13 in total—and higher humidity at 91%. For a deeper dive into what to expect, check out Koeln weather in November.

In July, the weather features a wide temperature range, with minimums around 8°C (48°F) and maximums soaring up to 40°C (104°F), resulting in an average of 20°C (68°F). This month experiences significant humidity levels at 72% and sees about 97 mm (3.8 in) of precipitation spread over 12 days. In contrast, December brings much cooler temperatures, with minimums dropping to -5°C (24°F) and maximums peaking at 15°C (59°F), averaging just 5°C (41°F). Precipitation increases to 127 mm (5.0 in) over 20 days, alongside a higher humidity level of 92%. For more details, check the Koeln weather in December.

Compare Koeln's Climate with Cities Worldwide

Conclusion: What to Expect From July Weather in Koeln

July in Koeln brings a notable shift in weather compared to other months, characterized by warm temperatures and increased humidity. With daytime highs soaring up to 40°C (104°F), it stands out as one of the hottest months of the year, offering a vibrant ambiance perfect for summer activities. However, this month also experiences considerable precipitation, occurring on about 12 days and contributing to an overall humid feel, averaging around 72%. As you prepare for your visit, keep in mind that July’s mix of sun and rain makes it a unique time to experience the rich culture of the city. For more in-depth insights on what to expect year-round, visit Koeln Climate.