Climate averages 1991–2020
Iserlohn weather
in July.
A mild, moderately wet month: the warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a mild month in Iserlohn: daytime highs average 21.4°C and nights cool to about 13.6°C. By daytime temperature it is the warmest month of the year.
Expect about 86 mm of rain on roughly 14 days, which makes July a moderately wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 16 h 07 min on an average July day.
The nearest other city in this atlas is Hagen (16 km away). In July its highs average 22.4°C, 1.0°C warmer than Iserlohn, with 111 mm of rain.
Among the 120 cities listed in Germany, Iserlohn ranks joint 113th of 120 for the warmest July highs and 92nd of 120 for the driest July (rainfall, lowest first). The mean July high of those 120 cities is 23.0°C; Iserlohn is 1.6°C cooler than that mean.
From July to August, average highs fall by 0.2°C to 21.2°C, and monthly rainfall falls from 86 mm to 84 mm.
The annual picture
July in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Iserlohn climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 3.7°C-0.7°C | -0.7°C | 81 | 14.5 | 8.48 h |
| February | 4.7°C-0.8°C | -0.8°C | 67 | 12.4 | 9.910 h |
| March | 8.4°C1.4°C | 1.4°C | 71 | 13.5 | 11.812 h |
| April | 12.8°C4.4°C | 4.4°C | 55 | 11.2 | 13.814 h |
| May | 16.5°C8.3°C | 8.3°C | 67 | 12.6 | 15.616 h |
| June | 19.4°C11.4°C | 11.4°C | 72 | 12.7 | 16.517 h |
| July, selected | 21.4°C13.6°C | 13.6°C | 86 | 14.0 | 16.116 h |
| August | 21.2°C13.5°C | 13.5°C | 84 | 13.1 | 14.615 h |
| September | 17.5°C10.6°C | 10.6°C | 72 | 12.3 | 12.713 h |
| October | 12.8°C7.3°C | 7.3°C | 72 | 12.7 | 10.711 h |
| November | 7.8°C3.4°C | 3.4°C | 75 | 13.7 | 8.99 h |
| December | 4.4°C0.5°C | 0.5°C | 85 | 14.7 | 8.08 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
July in nearby cities
- Hagen in JulyGermany · 16 kmHigh 22.4°C · Low 14.6°C · 111 mm rain
- Lüdenscheid in JulyGermany · 18 kmHigh 20.6°C · Low 12.9°C · 105 mm rain
- Dortmund in JulyGermany · 23 kmHigh 22.6°C · Low 14.4°C · 90 mm rain
- Witten in JulyGermany · 25 kmHigh 22.4°C · Low 14.5°C · 89 mm rain
- Arnsberg in JulyGermany · 26 kmHigh 21.3°C · Low 13.3°C · 85 mm rain
- Lünen in JulyGermany · 29 kmHigh 22.9°C · Low 14.6°C · 90 mm rain
- Castrop-Rauxel in JulyGermany · 34 kmHigh 22.8°C · Low 14.4°C · 89 mm rain
- Hamm in JulyGermany · 35 kmHigh 22.7°C · Low 14.4°C · 72 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Iserlohn) is explained once on the Iserlohn year overview and on the Sources, method and limits page.