Last updated: June 24, 2025
In Hamburg, United States, the average temperature in September is a pleasant 22°C (71°F). While you might enjoy a warm day with highs reaching up to 36°C (97°F), be prepared for cooler moments, as temperatures can drop to a minimum of 6°C (43°F). Expect some rain, with an average precipitation of 94 mm (3.7 in) spread over 9 days. The climate remains comfortably humid, with an average humidity level of 75%.
In September in Hamburg, the average temperature is 22°C (71°F). The maximum can reach 36°C (97°F), while the minimum can drop to as low as 6°C (43°F). This diverse temperature range makes it essential to pack both light clothing for the warm days and warmer layers for the cooler evenings during your travels.
In Hamburg in September, the precipitation amount reaches 94 mm (3.7 in) over the course of 9 days.
In Hamburg in September, humidity is 75%. With an average temperature of 22°C (71°F), this humidity feels like a warm embrace, making traveling a bit sticky but also invigorating, as the air surrounds you with a heavy yet refreshing sensation that highlights the vibrant atmosphere of your surroundings.
In Hamburg in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Hamburg.
UV Risk Categories
Weather in Hamburg varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Hamburg, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -3°C (27°F) | 35 mm (1.4 inches) | 76% | moderate |
| February Weather | -2°C (28°F) | 32 mm (1.3 inches) | 80% | moderate |
| March Weather | 6°C (44°F) | 93 mm (3.7 inches) | 73% | high |
| April Weather | 11°C (52°F) | 71 mm (2.8 inches) | 74% | very high |
| May Weather | 18°C (65°F) | 155 mm (6.1 inches) | 78% | very high |
| June Weather | 25°C (77°F) | 106 mm (4.2 inches) | 82% | extreme |
| July Weather | 26°C (80°F) | 102 mm (4.0 inches) | 83% | very high |
| August Weather | 24°C (76°F) | 111 mm (4.4 inches) | 80% | very high |
| September Weather | 22°C (71°F) | 94 mm (3.7 inches) | 75% | very high |
| October Weather | 12°C (55°F) | 143 mm (5.6 inches) | 75% | high |
| November Weather | 5°C (42°F) | 32 mm (1.3 inches) | 82% | moderate |
| December Weather | 1°C (34°F) | 33 mm (1.3 inches) | 83% | moderate |