Climate guideThirty-year normals for Calw
Calw climate by month
Oceanic · CfbBest Jul–Sep
Annual mean10°day and night
Seasonal swing18°warmest vs coolest
Precipitation926 mm155 wet days a year
48.71° N, 8.74° EElevation 339 mUTC+2 · Central European Summer Time
When to goCalw · weather score
Best timeJul–Sep
October: high / low14° / 6°
iSummary
What the weather is like
Calw has an oceanic climate (Köppen Cfb): rain spread through the year and no real dry season.
The warmest month is August, when afternoons average 24° and nights 13°. January is the coolest month, with highs of 4° and lows of -2°. The difference between the warmest and the coolest month is about 18°.
About 926 mm of precipitation falls in an average year. December is the wettest month (88 mm, 15 wet days) and September the driest (64 mm, 10 wet days). Cloud cover ranges from 32% in August to 50% in December.
Compared with Berlin, the capital, Calw is 0.4° cooler on a August afternoon and receives more precipitation over the year.
Year in figures
- Hottest afternoons
- 24° · August
- Coldest nights
- -2° · January
- Wettest month
- December
- Driest month
- September
- Clearest skies
- August · 32% cloud
- Longest day
- 16 h 08 min
- Shortest day
- 8 h 18 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 | 4° | 6° | 10° | 15° | 19° | 22° | 24° | 24° | 19° | 14° | 8° | 5° |
| Average low | -2° | -2° | 1° | 4° | 8° | 11° | 13° | 13° | 9° | 6° | 2° | -1° |
| Precipitation | 74 mm | 67 mm | 75 mm | 63 mm | 92 mm | 83 mm | 88 mm | 80 mm | 64 mm | 79 mm | 73 mm | 88 mm |
| Wet days (≥1 mm) | 14.2 | 11.4 | 12.6 | 10.6 | 14.4 | 13.8 | 14.2 | 13.8 | 9.9 | 12.3 | 12.2 | 15.3 |
| Cloud cover | 47% | 44% | 44% | 41% | 40% | 37% | 33% | 32% | 38% | 43% | 49% | 50% |
| Daylight | 8h 43 | 10h 11 | 11h 50 | 13h 40 | 15h 14 | 16h 08 | 15h 46 | 14h 24 | 12h 38 | 10h 52 | 9h 13 | 8h 18 |
| Month score | 18 | 25 | 24 | 53 | 63 | 65 | 66 | 67 | 73 | 46 | 21 | 17 |
ivMonth by month
Calw in every month
January18
4° / -2°
74 mm · 14.2 wet days
February25
6° / -2°
67 mm · 11.4 wet days
March24
10° / 1°
75 mm · 12.6 wet days
April53
15° / 4°
63 mm · 10.6 wet days
May63
19° / 8°
92 mm · 14.4 wet days
June65
22° / 11°
83 mm · 13.8 wet days
July66
24° / 13°
88 mm · 14.2 wet days
August67
24° / 13°
80 mm · 13.8 wet days
September73
19° / 9°
64 mm · 9.9 wet days
October46
14° / 6°
79 mm · 12.3 wet days
November21
8° / 2°
73 mm · 12.2 wet days
December17
5° / -1°
88 mm · 15.3 wet days