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 : the site's new name, City by Month.
Cities by country
- Argentina: Buenos Aires
- Australia: Melbourne (facts only), Sydney (facts only)
- Austria: Vienna
- Brazil: Rio de Janeiro (facts only)
- Czechia: Prague
- France: Paris
- Germany: Berlin
- Hong Kong SAR, China: Hong Kong
- India: Delhi (facts only), Mumbai (facts only)
- Italy: Rome
- Japan: Osaka, Tokyo
- Netherlands: Amsterdam
- Portugal: Lisbon (facts only), Porto (facts only)
- Singapore: Singapore
- Spain: Barcelona
- Thailand: Bangkok (facts only)
- Türkiye: Istanbul (facts only)
- United Arab Emirates: Dubai (facts only)
- United Kingdom: London
- United States: Los Angeles, New York
What a page holds
- City page: population, area, languages, time zone, currency, airports, daylight and public holidays. Where we have a climate source we can use: a 12-month climate table.
- Month page: daily high, daily low, rain, sunshine, sunrise, sunset and day length for that month, set against the rest of the year.
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 11 sources. Each is listed with its licence 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 2 October 2026.