Methodology

China Temp Rankings turns city-level weather observations and forecasts into readable province and national temperature rankings. The goal is to make broad weather patterns easier to compare while still preserving city-level detail for readers who need local context.

What We Measure

For each monitored city, we collect temperature, daily high and low temperatures, wind speed, and a short weather condition such as sunny, cloudy, overcast, or rain. Province pages show the monitored cities within that province, while the national page summarizes the province-level extremes.

How Rankings Are Calculated

Province rankings are built from the latest available city records. The hottest and coldest rankings use the relevant temperature fields from each province, and city tables are sorted by the current temperature reading. Weather descriptions are translated into English and Chinese so the same dataset can be read in both languages.

For Japan, location rankings use the JMA daily maximum-temperature field. Regional highs are the maximum of the included representative locations, while regional lows use the lowest available minimum. Missing values remain missing rather than being estimated. The Japan grouping uses ten travel regions and 48 locations representing all 47 prefectures.

How We Add Context

The generated summaries do more than repeat the raw feed. National pages compare warm and cool regions, temperature spread, wind signals, and wet-weather signals. Province pages keep the monitored city table visible, identify warmer and cooler city clusters, and add practical notes about clothing, travel, terrain, and local variation.

Update Frequency

The site is generated automatically from the latest available data. Static pages are refreshed regularly and served through a CDN for fast access. Because weather feeds can update at different times, a city may occasionally show a newer or older observation than a neighboring city.

Known Limitations

This website is an informational reference, not an official meteorological warning service. Temperature readings can differ from official station reports because of data provider timing, city coverage, rounding, and missing values. For safety-critical decisions, always consult official weather agencies and local emergency services.

Quality Checks

Pages are generated with canonical URLs, noindex rules for date archive pages that are too similar to core pages, visible data-source links, contact information, and FAQ sections. The aim is to keep the site useful for readers while avoiding duplicate or unexplained weather tables.

How to Interpret the Maps

Map colors show temperature ranges, not comfort levels. Humidity, wind, rain, sunshine, and elevation can make the same temperature feel different in different regions. For that reason, every map should be read alongside the city table and the daily summary on the page.

How the Life Indices Are Calculated

The “life indices” on city and province pages are computed by this site from the day’s own high, low, wind, humidity, weather condition and seven-day forecast; nothing is taken from third-party content. The clothing index first converts the daytime high into a feels-like temperature (wind chill below 10°C when it is windy, the heat index above 27°C when it is humid), then applies an eight-band scale — very hot above 30°C, hot 26–30°C, comfortable 22–26°C, mild 18–22°C, cool 12–18°C, cold 6–12°C, very cold 0–6°C, freezing below 0°C — with a note added for a day–night swing above 10°C, precipitation or strong wind. The cold-risk index scores the day–night range, the change into tomorrow’s high, cold nights, very dry or very humid air and precipitation, and sums them into four levels from low to very high. The UV index estimates the clear-sky noon value from latitude and date, scales it for cloud (roughly 80% under partial cloud, 50% overcast, 30–40% in rain, snow or fog) and reports the WHO bands from low to extreme. The exercise index starts from the daytime feels-like temperature and deducts points for heat, cold, precipitation, fog, haze or dust, strong wind and humid heat, giving four levels from good to avoid. The outlook sentence picks out days in the seven-day strip that differ from today by 5°C or more and the days with rain. These indices are everyday guidance for dressing and planning, not health or medical advice, and they do not replace official forecasts or warnings.