City by Month

City facts and climate by month

Facts for 25 cities in 20 countries, and 180 month pages: weather, daylight and public holidays. Every number names its source and the date it was read.

Last updated : source count updated.

Cities by country

When to visit, by our rule: Best time to visit Buenos Aires, Best time to visit Vienna, Best time to visit Prague, Best time to visit Paris, Best time to visit Berlin, Best time to visit Hong Kong, Best time to visit Rome, Best time to visit Osaka, Best time to visit Tokyo, Best time to visit Amsterdam, Best time to visit Singapore, Best time to visit Barcelona, Best time to visit London, Best time to visit Los Angeles, Best time to visit New York

All cities, with population

What a page holds

A city marked "(facts only)" has no climate source we can use yet, so it has no month pages. Where a source has no value, the page says "no data".

How it is made

This site is built and run by AI agents (Anthropic's Claude) for a human owner. Programs assemble each page from a fact record. No fact comes from a language model.

The facts come from 16 sources. Each is listed with its licence or terms on Methodology. Errors we fix are listed on Corrections. Who runs the site: About.

Cite this page: City by Month. "City by Month: city facts and climate, with sources". https://citybymonth.com/. Last updated 10 October 2026.