Jiayuguan in Summer
In summer (June, July and August), Jiayuguan sees average daytime highs around 25°C and overnight lows near 15°C, with 73 mm of rain over about 15 wet days across the season. It is the warmest season of the year and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 25°C. The sky is clear or mostly clear about 48% of the time across summer, and the air most often feels dry.
Summer is Jiayuguan's best season of the year to visit on our travel score. For the whole year in context, see Jiayuguan's year-round climate.
- Avg daytime high
- 25°C
- warmest season of the year
- Avg overnight low
- 15°C
- Rainfall
- 73 mm
- 15 wet days
- Avg wind
- 9 km/h
- Travel score
- 7.7
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Jiayuguan in Summer
Across summer, daytime highs hold fairly steady around 25°C.
A typical summer day in Jiayuguan reaches about 25°C and drops to 15°C overnight. The warmest of the three months is July, the coolest June.
How summer really feels in Jiayuguan
Once humidity and wind are folded in, summer brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
summer sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Jiayuguan weather by month
How the three summer months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | -3° / -13° | 3 | 1.1 | 1.7 | 9.5 | 0.0 |
| Feb | 1° / -10° | 3 | 1.1 | 1.5 | 10.4 | 0.0 |
| Mar | 8° / -4° | 10 | 2.3 | 2.2 | 11.7 | 1.6 |
| Apr | 15° / 3° | 9 | 2.3 | 0.8 | 13 | 5.7 |
| May | 21° / 9° | 15 | 3.9 | 0.2 | 14.2 | 7.4 |
| Jun | 25° / 14° | 20 | 4.2 | 0 | 14.8 | 7.8 |
| Jul | 27° / 16° | 25 | 5.2 | 0 | 14.5 | 7.5 |
| Aug | 25° / 14° | 27 | 5.4 | 0 | 13.6 | 7.8 |
| Sep | 20° / 9° | 18 | 3.5 | 0 | 12.3 | 7.6 |
| Oct | 14° / 2° | 7 | 1.8 | 0.6 | 10.9 | 4.9 |
| Nov | 5° / -5° | 5 | 1.6 | 1.7 | 9.8 | 0.7 |
| Dec | -2° / -11° | 4 | 1.4 | 1.8 | 9.2 | 0.0 |
Cloud cover in Summer
The sky is clear or mostly clear about 48% of the time across summer.
Chance of precipitation in Summer
Jiayuguan gets around 73 mm of rain over 15 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 9 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 14 h 36 min in early June to 13 hours by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 6.5 kWh/m².
Hazard calendar for Jiayuguan
In summer, Jiayuguan overlaps its dust season. The full year is below, with each hazard's peak months called out.
Jiayuguan sees seasonal dust haze (March–October), heaviest in May.
Is summer a good time to visit Jiayuguan?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is one of the better times to visit Jiayuguan for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Jiayuguan in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Jiayuguan sees daytime highs around 25°C and nights near 15°C. Pack sun protection. Worth having: light clothes. About 15 days see rain.
UV index in Jiayuguan in Summer
Clear-sky midday UV across summer averages around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Jiayuguan peaks around July 14 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 10 at about 2 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 3 | 5 | 7 | 8 | 10 | 11 | 9 | 8 | 4 | 2 | 2 |
| Level | Low | Moderate | Moderate | High | Very high | Very high | Extreme | Very high | Very high | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 3 | Moderate |
| Mar | 5 | Moderate |
| Apr | 7 | High |
| May | 8 | Very high |
| Jun | 10 | Very high |
| Jul | 11 | Extreme |
| Aug | 9 | Very high |
| Sep | 8 | Very high |
| Oct | 4 | Moderate |
| Nov | 2 | Moderate |
| Dec | 2 | Low |
Air quality in Jiayuguan in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual average.
Air quality in Jiayuguan is worst in May — around 39 µg/m³ PM2.5 (poor), about 2.6× the cleanest month (December, 15 µg/m³).
Seasonal pattern from CAMS reanalysis, scaled to Jiayuguan's WHO annual average of 25.9 µg/m³.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 19 | 20 | 37 | 39 | 39 | 25 | 22 | 26 | 22 | 26 | 21 | 15 |
| Level | Moderate | Moderate | Poor | Poor | Poor | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 19 | Moderate |
| Feb | 20 | Moderate |
| Mar | 37 | Poor |
| Apr | 39 | Poor |
| May | 39 | Poor |
| Jun | 25 | Moderate |
| Jul | 22 | Moderate |
| Aug | 26 | Moderate |
| Sep | 22 | Moderate |
| Oct | 26 | Moderate |
| Nov | 21 | Moderate |
| Dec | 15 | Moderate |
Where is Jiayuguan?
Jiayuguan sits at 39.8°N, 98.3°E, 1,635 m above sea level, in China. The nearest listed city is Dunhuang, 309 km away.
Topography around Jiayuguan
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Jiayuguan.
Within 3 km, the terrain around Jiayuguan has only modest variations in elevation — a maximum elevation change of 90 m around an average of 1,636 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 748 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,337 m.
The land around Jiayuguan is covered by artificial surfaces (57%) and bare terrain (32%) within 3 km, bare terrain (75%) within 16 km, and bare terrain (70%) within 80 km.
China travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type A / I
- 220 V · 50 Hz
- Prices
- ≈ 47% of US
- price level, 2025
- GDP per capita
- $13,862
- 2025
- Happiness
- 6.1 / 10
- World Happiness, 2025
- Homicide rate
- 0.5
- per 100k, 2020
- Road deaths
- 17.4
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Low
- EF EPI 464
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Jiayuguan (39.8112°, 98.2862°, elevation 1,635 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.