Monthly climate averages for Iserlohn, Germany. Based on 10-year ERA5 reanalysis data.
Cfb Oceanic
Climate OverviewIserlohn, Germany in August has warm conditions, with highs averaging 22.5°C (73°F). Rain falls on about 13 days this month.
This month falls at the end of Summer.
Temperatures remain fairly steady throughout August, with daily highs around 22°C (72°F).
August sees fairly even rainfall, totalling about 73 mm across the month.
The warmest days tend to fall around the 13th, averaging 23.9°C (75°F).
Temperatures begin dropping heading into September.
Daily averages based on historical data (2016–2025)
Daytime temperatures around 23°C (73°F) are ideal for full-day outdoor exploration. Keep afternoons flexible as tropical showers are common — they typically clear within an hour.
Rain usually comes in shorter passing showers rather than all-day rain.
1 of the last 5 yearly records were warmer than this month's long-run average.
| Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 4°C / 0°C | 0°C / -4°C | 16days (97 mm) Wet | 3.2h Poor | 88% Very Muggy | 1 Low | Poor | View Details |
| February | 7°C / 1°C | 2°C / -4°C | 14days (82 mm) Wet | 5.1h Fair | 82% Humid | 1.7 Low | Poor | View Details |
| March | 9°C / 2°C | 6°C / -2°C | 13days (70 mm) Wet | 7.1h Good | 77% Humid | 3.4 Moderate | Poor | View Details |
| April | 13°C / 4°C | 10°C / 1°C | 12days (60 mm) Wet | 9.6h Good | 73% Muggy | 4.4 Moderate | Fair | View Details |
| May best | 17°C / 9°C | 16°C / 6°C | 12days (69 mm) Wet | 10.8h Excellent | 72% Muggy | 5.8 High | Good | View Details |
| June best | 21°C / 13°C | 21°C / 12°C | 10days (74 mm) Wet | 11.3h Excellent | 71% Muggy | 6.3 High | Excellent | View Details |
| July best | 22°C / 14°C | 22°C / 13°C | 13days (84 mm) Wet | 11.1h Excellent | 71% Muggy | 5.8 High | Excellent | View Details |
| August best | 23°C / 14°C | 22°C / 14°C | 13days (73 mm) Wet | 10.3h Excellent | 72% Muggy | 5.3 High | Excellent | View Details |
| September best | 19°C / 12°C | 18°C / 10°C | 11days (68 mm) Wet | 8.6h Good | 76% Humid | 4.1 Moderate | Good | View Details |
| October | 14°C / 9°C | 12°C / 6°C | 15days (86 mm) Wet | 5.3h Fair | 83% Humid | 2.3 Moderate | Fair | View Details |
| November | 8°C / 4°C | 5°C / 0°C | 14days (72 mm) Wet | 4h Fair | 87% Very Muggy | 1.3 Low | Poor | View Details |
| December | 6°C / 2°C | 2°C / -2°C | 15days (84 mm) Wet | 2.6h Poor | 89% Very Muggy | 0.8 Low | Poor | View Details |
Dress in layers — a mix of long sleeves, light sweaters, and a versatile jacket works best for changeable conditions.
A waterproof jacket or compact umbrella is recommended for occasional showers.
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