September
OK
20.6°C / 12°C
16 rain days
mild, very wet
- comfortable temperatures (avg high 20.6°C / 69°F)
Best time to visit Cologne
Cologne, Germany — ranked month by month from data: temperature, rainfall, snow, and peak hazard seasons. Every month has trade-offs — pick what you can tolerate.
Best · September & May
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OK — shoulder months
May
OK
18.8°C / 9.4°C
18 rain days
mild, very wet
- comfortable temperatures (avg high 18.8°C / 66°F)
June
OK
23.1°C / 14°C
18 rain days
warm, very wet
- comfortable temperatures (avg high 23.1°C / 74°F)
- warm evenings without humidity overload
April
OK
14.8°C / 5.2°C
17 rain days
cool, very wet
March
OK
11.3°C / 2.9°C
18 rain days
cool, very wet
February
OK
8.2°C / 1.6°C
17 rain days
chilly, very wet
Months to skip
July
Skip
24.3°C / 15.2°C
20 rain days
warm, very wet
- extremely wet (20 rain days)
August
Skip
24°C / 15.1°C
20 rain days
warm, very wet
- extremely wet (20 rain days)
October
Skip
15.7°C / 9.1°C
19 rain days
cool, very wet
- extremely wet (19 rain days)
November
Skip
10°C / 4.8°C
21 rain days
cool, very wet
- extremely wet (21 rain days)
December
Skip
7.5°C / 3°C
20 rain days
chilly, very wet
- extremely wet (20 rain days)
January
Skip
6.1°C / 1.4°C
23 rain days
chilly, very wet
- extremely wet (23 rain days)
How we ranked these
Each month is scored on temperature comfort (18–27°C avg high is the sweet spot), rainfall (more rain days = lower score), snow days, and peak hazard seasons (hurricanes, monsoons, etc.). Green-tier months are within ideal range with no major issues. Yellow are workable but with trade-offs. Red has at least one significant problem — extreme heat or cold, heavy rain, or peak storm season.
🇩🇪 German survival phrases
The 16 phrases that will earn you smiles, food, and help when you need it. English-speaking travellers — start with the first 4 and add the rest as needed.
Hello
Hallo / Guten Tag
HAL-lo / GOO-ten tahk
Thank you
Danke
DAHN-keh
Please
Bitte
BIT-teh
Yes / No
Ja / Nein
yah / nyne
Excuse me
Entschuldigung
ent-SHUL-dee-goong
Do you speak English?
Sprechen Sie Englisch?
SHPREH-khen zee ENG-lish
I don't understand
Ich verstehe nicht
ikh fair-SHTEH-eh nikht
How much?
Wie viel?
vee feel
The bill, please
Die Rechnung, bitte
dee REKH-noong
Water
Wasser
VAH-sehr
Where is…?
Wo ist…?
voh ist
Bathroom
Toilette
twah-LEH-teh
Help!
Hilfe!
HIL-feh
Call the police
Rufen Sie die Polizei
ROO-fen zee dee po-lee-TSYE
I need a doctor
Ich brauche einen Arzt
ikh BROW-kheh AYN-en ARTST
I'm allergic to…
Ich bin allergisch gegen…
ikh bin ah-LEHR-gish GAY-gen
Pronunciations are rough English approximations — they'll get you understood, even if your tones aren't perfect.