Monthly weather averages & travel planning

Asia › 🇨🇳 China › Kunming
Updated: March 2026
May is a fair time to visit Kunming (5/10). With 10 daily sunshine hours and only 15 rain days, this month delivers genuinely reliable outdoor conditions, ranking it 4th sunniest of the year in Kunming. Culture-focused travellers and those who prefer lighter crowds will find May a practical choice, with prices running lower than peak April without sacrificing all the good weather. June offers a similar profile at lower hotel rates if dates are flexible. Watch out for prolonged rain stretches: with 15 wet days, a fully outdoor itinerary is risky. Build in museum days and covered market visits as contingency. Planning tips: accommodation is generally available without long lead times, and flight prices are typically lower than peak season. Flexible travellers will find the best deals by booking 2-4 weeks ahead. Mid-week arrivals consistently unlock lower hotel rates than weekend check-ins.
The single most important thing to know about visiting Kunming in May: rain is a genuine factor across 15 days of the month, meaning your plans need built-in indoor alternatives. Precipitation totals 143mm for the month, spread across roughly 15 days, and 10 sunshine hours per day give you a reliable window for outdoor plans.
24°C
75°F
Avg High
15°C
59°F
Avg Low
15 days
143 mm total
Rain Days
10h
per day avg
Sunshine
70%
Moderate
Humidity
The 9°C day-night temperature range is typical for continental climates: a light jacket in the morning that you shed by midday and need again after sunset. Humidity averages 70%, which is comfortable for most visitors. On warmer days, lighter fabrics help with the mild stickiness in the afternoon. UV index averages 9 this month, classed as high to very high. SPF 30+ sunscreen, a brim hat, and sunglasses are not optional between 10am and 4pm. Wind averages 19 km/h, light enough to be refreshing on warm days but noticeable in open coastal areas or elevated viewpoints. In Fahrenheit: 75°F average high, 59°F overnight low. Data sourced from Open-Meteo ERA5 climate reanalysis (1991–2020 normals).
Packing for Kunming in May means dressing for 24°C days and 15°C evenings. A light cotton tee with a casual overshirt works well at 24°C, the overshirt doubles as a layer for air-conditioned venues. Evening temperatures settle at 15°C, a modest 9°C drop that a light cardigan or denim jacket covers. Comfortable walking trainers are the versatile choice for both outdoor sightseeing and indoor venues. With 15 rain days expected, a compact travel umbrella is worth the bag space. A waterproof jacket is better than an umbrella if you plan full-day outdoor routes. For temple and religious site visits, carry a lightweight scarf or sarong to cover shoulders and knees, required at most major sites across the region.
Local tip: Temple and religious site visits require covered shoulders and knees in most of Kunming's heritage areas. A lightweight scarf or sarong weighs almost nothing and solves the problem instantly.
May has no major festivals or public holidays in Kunming, which is one of its practical advantages for independent travellers. Attractions run at lower capacity than during peak event periods, queues are shorter, and accommodation is easier to find without needing to book many months in advance. Local restaurants, markets, and transport operate at a relaxed pace, making this an ideal time for visitors who prefer a more authentic, unhurried experience of everyday city life rather than large crowds drawn in by a single major headline event.
Based on 24°C average highs and 15 rainy days
Kunming's May heat is driven by the Asian summer monsoon system, as the low-pressure cell that forms over the heated landmass draws warm, humid air from the oceans. The result is temperatures averaging 24°C with high moisture in the air. Overnight temperatures remain elevated at 15°C, as clouds and humidity prevent the earth from radiating heat away after sunset. Climate data: Open-Meteo ERA5 (1991–2020).
Sunshine Hours
The average number of hours per day with direct sunlight. Calculated from satellite measurements. Days with more than 7 hours of sunshine are ideal for outdoor activities. Under 3 hours means overcast conditions dominate.
UV Index
A scale from 0-11+ measuring ultraviolet radiation intensity. UV 0-2: Minimal risk. UV 3-5: Moderate, wear sunscreen. UV 6-7: High, hat and SPF 30+ essential. UV 8-10: Very High, limit midday exposure. UV 11+: Extreme, seek shade between 10am-4pm.
Rain Days
A rain day is counted when precipitation exceeds 0.1mm. This threshold captures even light drizzle. Unlike total rainfall in mm, rain days tells you how often you might need an umbrella, which is useful for planning outdoor activities.
Humidity
Relative humidity as a percentage. Below 40%: Dry, skin and throat may feel parched. 40-60%: Comfortable, ideal for most people. 60-80%: Sticky, light breathable fabrics recommended. Above 80%: Muggy, heat feels more intense; quick-dry clothing is essential.
Kunming in May
May ranks 4th sunniest of the year in Kunming, with an average 10 daily sunshine hours. The driest months are January, February, and December. April is the hottest month (24°C avg high); December is the coolest (14°C). From here, temperatures fall 0°C into June. Compared to last month (April: 24°C high, 9 rain days), May is similarly warm and wetter. May sits in the middle of the annual sunshine ranking for Kunming, offering a reasonable balance of good weather and manageable crowds.
| Month | High | Low | Rain Days | Sun | Details |
|---|---|---|---|---|---|
| January | 15°C | 5°C | 5 | 9h | View |
| February | 17°C | 7°C | 5 | 10h | View |
| March | 21°C | 10°C | 7 | 10h | View |
| April | 24°C | 13°C | 9 | 11h | View |
| May | 24°C | 15°C | 15 | 10h | View |
| June | 24°C | 17°C | 24 | 9h | View |
| July | 23°C | 17°C | 27 | 9h | View |
| August | 23°C | 16°C | 25 | 9h | View |
| September | 22°C | 15°C | 21 | 9h | View |
| October | 19°C | 12°C | 17 | 8h | View |
| November | 17°C | 8°C | 7 | 8h | View |
| December | 14°C | 5°C | 5 | 8h | View |
January
5 rain days, 9h sun
February
5 rain days, 10h sun
March
7 rain days, 10h sun
April
9 rain days, 11h sun
May
15 rain days, 10h sun
June
24 rain days, 9h sun
July
27 rain days, 9h sun
August
25 rain days, 9h sun
September
21 rain days, 9h sun
October
17 rain days, 8h sun
November
7 rain days, 8h sun
December
5 rain days, 8h sun
Data Sources for Kunming
Climate normals represent 30-year averages (1991-2020). Individual years may vary.