Short answer
March to May and September to November. Dali sits at roughly 2,000 metres, so temperatures barely move through the year: daytime highs run from about 13°C in January to about 23°C in June, and readings above 28°C are uncommon even in midsummer. What changes is rain. November to April is dry, and May to October carries the monsoon, peaking in July and August.
Spring is the flower season, with cherry blossom in the city and rapeseed in the fields around Xizhou from February into April. Autumn has the clearest air and the best light on the lake. Winter is dry, sunny and cold at night, and it brings the red-billed gulls to Erhai from November. Summer is green, cheap and wet, with short afternoon showers rather than all-day rain.
The weeks to avoid are Lunar New Year, National Day week in early October, and the spring March Street festival. All three fill the lake villages and lift prices hard. The windy season in late winter and early spring is a separate matter: Dali's wind is a local fixture, not a weather warning.
Dali weather by month
| Month | Daytime high | Night low | Rain | What it is like |
|---|---|---|---|---|
| January | 13-16°C | 3°C | Low, 23-27mm | Cold mornings, clear days, gulls on the lake |
| February | 16-17°C | 4°C | Low | First cherry blossom, warming fast |
| March | 19-20°C | 7°C | Low, around 35mm | Driest air of the year, windiest, blossom peaks |
| April | 22°C | 10°C | Low, 27-41mm | Sunniest month, around 9 hours of sun a day |
| May | 23-25°C | 13°C | Rising, 84-103mm | Warmest daytime temperatures, rain starts |
| June | 23-25°C | 15-17°C | Heavy, 145-197mm | Wet season underway, green hillsides |
| July | 22-25°C | 15-17°C | Wettest, 194-284mm | Humid, frequent showers, wild mushroom season |
| August | 22-25°C | 15-16°C | Very wet, 210-274mm | Wettest stretch alongside July, warm nights |
| September | 21-24°C | 14°C | Easing, 160-196mm | Clearing, best cloud layers on Cangshan |
| October | 19-22°C | 12°C | Tapering, 102-106mm | Rain ends, light turns gold |
| November | 16-19°C | 7°C | Low, 29-31mm | Calm, dry, gulls arrive, quiet before winter |
| December | 13-16°C | 3°C | Driest, 12-16mm | Bright blue skies, cold nights, snow on Cangshan |
Two things hold across every source. Dali has no extreme heat and no extreme cold, and the difference between day and night is bigger than the difference between seasons. A sunny December afternoon can feel like spring, and the same evening needs a jacket.
Spring: the flower season
| What blooms | When | Where |
|---|---|---|
| Magnolia | January to February | Shanshuijian residential area |
| Cherry blossom | February to early April, peaking around mid-March | Dali University's ancient city campus, Shanshuijian, city streets |
| Rapeseed | February to March | Fields around Xizhou and the lake plain |
| Pear blossom | Mid-March to early April | Qifeng village near Heqing, about 1.5 hours north |
| Jacaranda | May to June | Hongsheng Road and Fengyi Road, Xiaguan |
| Lotus | July to August | Dali Lotus Garden, Xinyi village |
| Ginkgo | December | Yuer Road and the Old Town |
| Winter cherry blossom | Late December | Xiaoyuanzi area, Lvyu Road |
The Dali University ancient city campus is the main cherry blossom site, an 800-metre avenue at the foot of Cangshan, and it is free. It also requires an advance reservation through the university's official WeChat account, with ID checked at the gate, so it is not somewhere you can decide to go on the morning. Peak bloom is around mid-March. Mornings before 09:00 and the hour before sunset are the quietest and the best light; weekends from 10:00 to 15:00 are the busiest.
Spring is also the windy season. March and April bring the strongest wind of the year across the lake, which is fine in town and less fine on a bicycle or an exposed cable car. April is simultaneously the sunniest month, at around nine hours of sun a day.
Summer and the wet season
The monsoon runs roughly May to October, heaviest in July and August, and the reality is more manageable than the totals suggest. Reports from Dali in July and August describe afternoon showers that come and go rather than days of steady rain, temperatures between about 18°C and 25°C, and mornings that are often clear.
What summer does well: it is the greenest the valley gets, it is the cool season for anyone escaping a Chinese coastal summer, the wild mushroom season runs through it, and it is cheaper and emptier than spring or autumn. What it does badly: cloud sits on Cangshan and hides the peaks, the Ximatan cable car closes in wind and rain, and the lake views lose their long range.
Autumn: the pick for visibility
September and October are the transition. September is still wet, around 160 to 196mm, and also the cloudiest month of the year at roughly 5.2 hours of sun a day. But the rain is breaking up, and the layered cloud sitting on the Cangshan range in September is what photographers rate the month for. October is drier, cooler and calmer, with the light turning gold across the lake plain.
November is the sweet spot for anyone who wants dry weather without the cold: around 29 to 31mm of rain, daytime highs of 16 to 19°C, and the red-billed gulls arriving on Erhai. For clear air, comfortable temperatures and manageable crowds at once, late October into November is it.
Winter
Winter in Dali is dry, bright and cold at the edges. December is the driest month at around 12 to 16mm, January has daytime highs of 13 to 16°C and nights around 3°C, and the snow line sits on Cangshan where you can see it from the Old Town.
The draw is the red-billed gulls, which migrate from Siberia and spend the winter on Erhai, with the lakeside villages at Caicun and Longkan the easiest places to see them. Winter cherry blossom also opens in late December. The catch is the cold after dark: central heating is not standard in Chinese guesthouses, so a January night indoors can be colder than the same night in a Beijing hotel. Ask what the room has before booking, and pack layers rather than one heavy coat.
Peak season and the weeks to dodge
| Period | What happens | Effect on a trip |
|---|---|---|
| Lunar New Year, late January or February | China's biggest travel week | Lake villages fill, prices jump, transport booked solid |
| National Day week, 1-7 October | The autumn holiday week | Same effect, on top of the best weather of the year |
| March Street festival, 15th to 21st of the third lunar month | Dali's largest festival, usually April or May | Horse racing, markets, crowds outside the west gate. Bus hours extend, some roads close |
| Torch Festival, 25th day of the sixth lunar month | Bai fire festival in villages around the lake | Evening events at Xizhou, Shuanglang, Wase and the Old Town. Book ahead |
| Raosanling, fourth lunar month | Three-day Bai temple fair around the lake villages | Biggest at Qingdong temple north of the Old Town. Localised crowds, not a tourist event |
Lunar dates move against the Gregorian calendar every year, so none of the festival dates above is fixed. The March Street festival is the one to plan around deliberately: a national intangible heritage event with horse racing and hundreds of market stalls, drawing people from across Yunnan. In recent years it has run for a week from the start of May, with the fairground west of the Old Town, extended hours on bus routes 4 and 8, and temporary road closures. Confirm the dates locally before you build a trip around it.
Outside those windows, Dali does not have a crushing tourist season the way Lijiang does. Even in spring and autumn, crowds concentrate in the Old Town's main streets and at Shuanglang, and a side lane or a lake village 10 minutes away is quiet.
Choosing your dates
- Flowers and warm days: March to mid-April. Accept wind, and the busiest guesthouses of spring.
- Clear mountain and lake views: October to November. Cooler evenings, especially in November.
- Cheapest and quietest: June to August. Afternoon rain, cloud on the peaks, the high cable car closing.
- Dry, sunny, cold nights: December to February. No heating in many guesthouses, short days.
- Gulls and snow on Cangshan: November to February. Cold mornings and dry-season dust.
- Avoiding crowds entirely: late February, early September, late November. Shoulder-season weather, some rain or wind.
Frequently asked questions
What is the best month to visit Dali?
October and November for most people: clear air, daytime highs of 16 to 22°C and the rain finished. March and April if flowers matter more than visibility, at the cost of wind.
How bad is the rainy season in Dali?
June to August, heaviest in July and August, with short afternoon showers rather than all-day rain. The real cost is cloud on Cangshan hiding the peaks and closing the high cable car.
When can I see the cherry blossom in Dali?
February to early April, peaking around mid-March at Dali University's ancient city campus. It is free but needs an advance reservation through the university's official WeChat account.
Is Dali cold in winter?
The days are not: January highs are around 13 to 16°C with plenty of sun. The nights are, dropping near 3°C, and guesthouses generally have no central heating.
When are the red-billed gulls on Erhai Lake?
They winter on the lake from around November to February, migrating from Siberia. The west shore villages at Caicun and Longkan are the easiest places to see them.
What is the windy season in Dali?
Late winter and early spring, strongest in March and April. Wind is one of the local four famous features, alongside flowers, snow on Cangshan and the moon over Erhai.
Which holiday weeks should I avoid?
Lunar New Year and National Day week, 1 to 7 October, which fill every lake village. The spring March Street festival has a similar effect in Dali. Lunar dates shift each year.
Is summer a bad time to go?
Not bad, just different: green, cool by Chinese summer standards, cheaper and quieter. What you lose is the view, with cloud on Cangshan and the high cable car closing in bad weather.
Related reading
Monthly temperature and rainfall ranges follow published climate compilations for the Dali basin; two sources disagree on monthly rainfall totals by 30 to 90mm and both ranges are shown above. Flower timing follows local and regional bloom calendars for Yunnan. Festival dates follow the Bai lunar calendar and are published each year by Dali prefecture sources, so they move against Gregorian dates. Confirm bloom and festival timing locally before you book.