Weather in Bonn on 9 August 2026
Preliminary outlook for 9 August 2026
A preliminary estimate based on the 2020–2025 archive: daytime around +27°C and nighttime around +16°C, average precipitation 0.5 mm, wind around 2 m/s, humidity around 62%.
This is a climate-based estimate, not a precise long-range forecast. It is replaced by hourly data when the date enters the forecast window.
+22°C
Weather archive — latest year: 2025
Clear/Sunny
Weather archive — latest year: 2025
Nighttime: +16°C
Precipitation: 0 mm
Wind: 1 — 3 m/s
Humidity: 54%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +30°C | Sun hours | 14 h |
| UV index | 6 | Cloud cover (avg.) | 22% |
| Pressure (avg.) | 764 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +22°C | Dew point (avg.) | +12°C |
| Heat index (avg.) | +22°C | Wind chill (avg.) | +22°C |
| Wind gusts (max.) | 4 m/s | Wind direction (avg.) | 235° ↖ (NW) |
Sunrise
06:10
Duration
14 h 53 min
Sunset
21:03
Moonrise
21:25
Moonset
05:57
Moon phase
Full Moon
Illumination
100%
+20°C
Weather archive — for 2024 year
Overcast
Weather archive — for 2024 year
Nighttime: +16°C
Precipitation: 0.3 mm
Wind: 3 — 5 m/s
Humidity: 73%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +24°C | Sun hours | 2 h |
| UV index | 5 | Cloud cover (avg.) | 91% |
| Pressure (avg.) | 762 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +22°C | Dew point (avg.) | +15°C |
| Heat index (avg.) | +22°C | Wind chill (avg.) | +21°C |
| Wind gusts (max.) | 9 m/s | Wind direction (avg.) | 220° ← (W) |
Sunrise
06:11
Duration
14 h 51 min
Sunset
21:02
Moonrise
11:54
Moonset
22:46
Moon phase
Waxing Crescent
Illumination
28%
+17°C
Weather archive — for 2023 year
Cloudy
Weather archive — for 2023 year
Nighttime: +13°C
Precipitation: 2.2 mm
Wind: 2 — 3 m/s
Humidity: 71%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +22°C | Sun hours | 11 h |
| UV index | 4 | Cloud cover (avg.) | 70% |
| Pressure (avg.) | 763 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +17°C | Dew point (avg.) | +12°C |
| Heat index (avg.) | +18°C | Wind chill (avg.) | +17°C |
| Wind gusts (max.) | 6 m/s | Wind direction (avg.) | 274° ← (W) |
Sunrise
06:10
Duration
14 h 54 min
Sunset
21:04
Moonrise
Does not rise today
Moonset
16:03
Moon phase
Last Quarter
Illumination
42%
+23°C
Weather archive — for 2022 year
Clear/Sunny
Weather archive — for 2022 year
Nighttime: +15°C
Precipitation: 0 mm
Wind: 2 — 4 m/s
Humidity: 49%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +31°C | Sun hours | 15 h |
| UV index | 6 | Cloud cover (avg.) | 10% |
| Pressure (avg.) | 768 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +22°C | Dew point (avg.) | +10°C |
| Heat index (avg.) | +22°C | Wind chill (avg.) | +23°C |
| Wind gusts (max.) | 10 m/s | Wind direction (avg.) | 41° ↗ (NE) |
Sunrise
06:10
Duration
14 h 53 min
Sunset
21:03
Moonrise
19:41
Moonset
01:46
Moon phase
Waxing Gibbous
Illumination
81%
+17°C
Weather archive — for 2021 year
Cloudy
Weather archive — for 2021 year
Nighttime: +12°C
Precipitation: 0.2 mm
Wind: 3 — 4 m/s
Humidity: 76%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +21°C | Sun hours | 12 h |
| UV index | 4 | Cloud cover (avg.) | 58% |
| Pressure (avg.) | 763 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +17°C | Dew point (avg.) | +11°C |
| Heat index (avg.) | +18°C | Wind chill (avg.) | +17°C |
| Wind gusts (max.) | 10 m/s | Wind direction (avg.) | 189° ↓ (SSW) |
Sunrise
06:10
Duration
14 h 53 min
Sunset
21:03
Moonrise
06:48
Moonset
22:01
Moon phase
Waxing Crescent
Illumination
3%
+28°C
Weather archive — for 2020 year
Clear/Sunny
Weather archive — for 2020 year
Nighttime: +23°C
Precipitation: 0 mm
Wind: 2 — 3 m/s
Humidity: 48%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +35°C | Sun hours | 14 h |
| UV index | 7 | Cloud cover (avg.) | 11% |
| Pressure (avg.) | 763 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +29°C | Dew point (avg.) | +16°C |
| Heat index (avg.) | +29°C | Wind chill (avg.) | +28°C |
| Wind gusts (max.) | 5 m/s | Wind direction (avg.) | 119° ↘ (SE) |
Sunrise
06:11
Duration
14 h 51 min
Sunset
21:02
Moonrise
23:43
Moonset
12:36
Moon phase
Waning Gibbous
Illumination
59%
Weather in Bonn on 9 August in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+30°C
|
+16°C
|
+22°C | 14 h | 6 | 54% | 1 — 3 m/s |
| 2024 |
+24°C
|
+16°C
|
+20°C | 2 h | 5 | 73% | 3 — 5 m/s |
| 2023 |
+22°C
|
+13°C
|
+17°C | 11 h | 4 | 71% | 2 — 3 m/s |
| 2022 |
+31°C
|
+15°C
|
+23°C | 15 h | 6 | 49% | 2 — 4 m/s |
| 2021 |
+21°C
|
+12°C
|
+17°C | 12 h | 4 | 76% | 3 — 4 m/s |
| 2020 |
+35°C
|
+23°C
|
+28°C | 14 h | 7 | 48% | 2 — 3 m/s |