Photo: Dr.G.Schmitz · CC BY-SA 3.0 · Wikimedia Commons
IserlohnReport this photo · linked, not stored
IserlohnReport this photo · linked, not stored
Climate guideThirty-year normals for Iserlohn
Iserlohn climate by month
Oceanic · CfbBest May · Aug–Sep
Annual mean10°day and night
Seasonal swing16°warmest vs coolest
Precipitation1,153 mm164 wet days a year
51.38° N, 7.70° EElevation 253 mUTC+2 · Central European Summer Time
When to goIserlohn · weather score
Best timeMay · Aug–Sep
October: high / low14° / 6°
iSummary
What the weather is like
Iserlohn has an oceanic climate (Köppen Cfb): rain spread through the year and no real dry season.
The warmest month is July, when afternoons average 23° and nights 13°. January is the coolest month, with highs of 5° and lows of -1°. The difference between the warmest and the coolest month is about 16°.
About 1,153 mm of precipitation falls in an average year. January is the wettest month (115 mm, 16 wet days) and April the driest (67 mm, 10 wet days). Cloud cover ranges from 38% in August to 58% in December.
Compared with Berlin, the capital, Iserlohn is 2° cooler on a July afternoon and receives more precipitation over the year.
Year in figures
- Hottest afternoons
- 23° · July
- Coldest nights
- -1° · February
- Wettest month
- January
- Driest month
- April
- Clearest skies
- August · 38% cloud
- Longest day
- 16 h 35 min
- Shortest day
- 7 h 53 min
iiCharts
Twelve months at a glance
Temperature and precipitation
Daily high/low range bars, monthly precipitation columnsTemperature curve
Average high, lowDaylight
Hours between sunrise and sunset on the 15th of each monthiiiData table
Climate normals month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high | 5° | 6° | 10° | 14° | 18° | 21° | 23° | 23° | 19° | 14° | 9° | 5° |
| Average low | -1° | -1° | 1° | 4° | 7° | 10° | 13° | 12° | 9° | 6° | 3° | 1° |
| Precipitation | 115 mm | 89 mm | 103 mm | 67 mm | 83 mm | 92 mm | 101 mm | 94 mm | 94 mm | 97 mm | 107 mm | 111 mm |
| Wet days (≥1 mm) | 16.4 | 13 | 13.2 | 10.4 | 13.1 | 13.6 | 15.6 | 14.8 | 10.9 | 12.5 | 14.1 | 16.3 |
| Cloud cover | 55% | 52% | 50% | 44% | 43% | 42% | 39% | 38% | 45% | 48% | 56% | 58% |
| Daylight | 8h 21 | 10h 00 | 11h 49 | 13h 50 | 15h 35 | 16h 35 | 16h 10 | 14h 38 | 12h 42 | 10h 45 | 8h 55 | 7h 53 |
| Month score | 15 | 18 | 19 | 50 | 64 | 63 | 63 | 64 | 68 | 42 | 14 | 13 |
ivMonth by month
Iserlohn in every month
January15
5° / -1°
115 mm · 16.4 wet days
February18
6° / -1°
89 mm · 13 wet days
March19
10° / 1°
103 mm · 13.2 wet days
April50
14° / 4°
67 mm · 10.4 wet days
May64
18° / 7°
83 mm · 13.1 wet days
June63
21° / 10°
92 mm · 13.6 wet days
July63
23° / 13°
101 mm · 15.6 wet days
August64
23° / 12°
94 mm · 14.8 wet days
September68
19° / 9°
94 mm · 10.9 wet days
October42
14° / 6°
97 mm · 12.5 wet days
November14
9° / 3°
107 mm · 14.1 wet days
December13
5° / 1°
111 mm · 16.3 wet days