If you only remember three things: avoid Chinese New Year (late Jan / early Feb), avoid the first week of May, and avoid October 1–7. These are the three windows when 1.4 billion people also try to travel.
Month-by-month
| Month | Weather | Crowds | Verdict |
|---|---|---|---|
| Jan | Cold, dry north; mild south | Low (avoid Spring Festival week) | Harbin Ice Festival, Yunnan, Hong Kong |
| Feb | Cold; Spring Festival travel chaos | Insane during CNY, then empty | Skip CNY week; otherwise great value |
| Mar | Spring begins south | Low | Yunnan, Guangxi, Hong Kong |
| Apr | Warm, blooming, often clear | Moderate | ★ Best overall — Beijing, Xi'an, Suzhou |
| May | Warm to hot; rain south | Heavy around May 1 holiday | Avoid Golden Week (May 1–5) |
| Jun | Hot, humid, monsoon south | Moderate | Tibet, Qinghai, Xinjiang |
| Jul | Very hot; school holidays | Heavy at sights | Mountains: Jiuzhaigou, Zhangjiajie |
| Aug | Hot, typhoons on coast | Heavy | Inner Mongolia grasslands, Tibet |
| Sep | Cooling, clear skies | Light early, heavy late | ★ Best overall — everywhere works |
| Oct | Crisp, postcard fall | Brutal Oct 1–7 Golden Week | Mid-late Oct is gold; avoid Oct 1–7 |
| Nov | Cool, dry, clear | Low | Beijing, Huangshan, Yangtze cruise |
| Dec | Cold north, mild south | Very low | Cheapest flights & hotels of the year |
By region
- Beijing & the north — April–May, late September–early November. Winter is cold but Forbidden City crowds vanish.
- Shanghai & the Yangtze delta — March–May, October–November. Summer is brutally humid.
- Chengdu, Yunnan, Guizhou — March–June, September–November. Mild year-round; rainy June–August.
- Tibet & Qinghai — June–September only. Roads close in winter and oxygen is thin.
- Xinjiang & the Silk Road — May–June, September–October. Summer hits 40°C in Turpan.
- Hong Kong, Hainan, Guangdong — November–March. Skip summer typhoons.
The three weeks to avoid
During these windows, domestic flights triple in price, every train sells out within minutes of release, and the Great Wall is shoulder-to-shoulder:
- Chinese New Year — dates shift every year; check the lunar calendar before booking.
- Labour Day — May 1–5.
- National Day "Golden Week" — October 1–7. The single worst week to be a tourist in China.
Now book the trip
Once you've picked your month, check the visa rules, then book HSR and Didi. If you're choosing between China and its neighbors, compare the costs.