Wuxi weather in May

In May, Wuxi sees average daytime highs of 25°C and overnight lows near 18°C, with 134 mm of rain across 10.6 wet days and about 13.6 hours of daylight. It is the 5th-warmest and 4th-wettest month of the year here.

Highs climb over the month, from about 23°C in the first days to 26°C by the end. The sky is clear or mostly clear about 27% of the time in May, and the air most often feels humid.

Daylight stretches from about 13 h 12 min at the start of May to 13 h 54 min by month's end. Set against the rest of the year, May is Wuxi's 9th-clearest and 2nd-windiest month. For the whole year in context, see Wuxi's year-round climate.

Daytime high
25°
5th warmest
Overnight low
18°
8th coldest
Rainfall
134 mm
10.6 wet days
Daylight
13 h 36 min
5:07 AM – 6:43 PM
Cloud cover
66%
9th clearest
Wind
15 km/h
2nd windiest
Solar energy
5.25 kWh/m²
Travel score
6.6
out of 10

Wuxi is prefecture-level city in Jiangsu, China.

Air quality
Very high
PM2.5 43.5 µg/m³ · 2018
Density
950/km²
people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 23°C in the first days to 26°C by the end.

A typical May day in Wuxi reaches about 25°C in the afternoon and slips back to 18°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 29°C. Set against its neighbours, May runs about 5°C warmer than April and about 3°C cooler than June.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12316
22316
32316
42316
52317
62417
72417
82417
92417
102417
112418
122418
132418
142418
152518
162518
172518
182519
192519
202519
212519
222619
232619
242619
252620
262620
272620
282620
292620
302620
312720

How May really feels in Wuxi

Once humidity and wind are folded in, May averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Wuxi weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 7091.410.20.9
Feb / 739.20.910.81.9
Mar14° / 10311.80.311.83.7
Apr20° / 13°11010.3012.86.0
May25° / 18°13410.6013.66.6
Jun28° / 22°26113.20145.4
Jul31° / 26°17913.7013.83.8
Aug31° / 26°16814013.24.0
Sep27° / 22°889.1012.26.4
Oct22° / 16°596.7011.27.3
Nov16° / 10°627.9010.45.3
Dec10° / 486.70.4102.3

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 10% of May, with mostly cloudy or overcast conditions the remaining 63%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13862
23862
33862
43763
53763
63763
73862
83763
93664
103664
113664
123664
133664
143664
153664
163664
173763
183763
193763
203664
213664
223664
233664
243763
253763
263763
273664
283664
293664
303565
313565

Chance of precipitation in May

Any precipitation

Wuxi gets around 134 mm of rain over 10.6 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 34% and peaks near 37% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
133
233
333
433
533
634
735
835
936
1036
1136
1237
1337
1436
1536
1636
1736
1836
1935
2035
2134
2234
2333
2433
2532
2632
2732
2832
2932
3032
3132

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

Most of May feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, May lands in the humid band about 30% of days. Sticky, muggy-or-worse air turns up on roughly 27% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1382623940
23626241040
33426251040
43227261140
53127271240
62927271240
72827281340
82727281440
92627281440
102527281550
112427291650
122227291650
132127291750
142027291851
151828301851
161727311951
171527312051
181427322151
191327322261
201126322361
211026332461
22925332571
23824342671
24724342781
25623352881
26621352991
27520353091
284193531101
294183532111
303173433121
313153335131

Wind in May

Winds average 15 km/h in May.

Across May, daily wind ranges from about 14 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
115light breeze
215light breeze
315light breeze
415light breeze
515light breeze
615light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze
3114light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 12 min at the start of May to 13 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 42 minutes over May. Sunrise moves from 5:19 AM to 5:00 AM, and sunset from 6:33 PM to 6:53 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.25:196:33
213.25:186:33
313.35:186:34
413.35:176:35
513.35:166:35
613.45:156:36
713.45:146:37
813.45:136:38
913.45:126:38
1013.55:116:39
1113.55:116:40
1213.55:106:40
1313.55:096:41
1413.65:086:42
1513.65:086:42
1613.65:076:43
1713.65:066:44
1813.65:066:45
1913.75:056:45
2013.75:056:46
2113.75:046:47
2213.75:036:47
2313.85:036:48
2413.85:026:49
2513.85:026:49
2613.85:016:50
2713.85:016:50
2813.85:016:51
2913.95:006:52
3013.95:006:52
3113.95:006:53

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.25 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.55 kWh/m² to a high of 5.25 kWh/m² in May across the year — May's 5.25 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.2Bright
45.2Bright
55.2Bright
65.2Bright
75.2Bright
85.2Bright
95.2Bright
105.2Bright
115.2Bright
125.2Bright
135.2Bright
145.2Bright
155.2Bright
165.2Bright
175.2Bright
185.3Bright
195.3Bright
205.3Bright
215.3Bright
225.3Bright
235.3Bright
245.3Bright
255.3Bright
265.3Bright
275.3Bright
285.3Bright
295.3Bright
305.3Bright
315.3Bright
Planning a trip in May

Hazard calendar for Wuxi

In seasonPeak

In May, Wuxi sits inside its pacific typhoon and rainy season season. The full year is below, with each hazard's peak months called out.

Wuxi sits in the Pacific typhoon belt; the season peaks July–October.

Wuxi's rainy season runs May–August, when most of the year's rain falls.

Pacific typhoon
Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is May a good time to visit Wuxi?

Our two travel scores rate May for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.6
Sightseeing
2nd-best month of the year
5.8
Beach & pool
4th-best month of the year

May is a reasonable time to visit Wuxi for sightseeing.

What to pack for Wuxi in May

From May's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In May, Wuxi sees daytime highs around 25°C and nights near 18°C. Worth packing: light clothes, rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

UV index in Wuxi in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Wuxi peaks around September 10 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateSep 10UV 10Dec 18UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar5High
Apr7High
May7High
Jun8Very high
Jul9Very high
Aug9Very high
Sep10Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Wuxi in May

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where May falls, not just the annual average.

Air quality in Wuxi is worst in December — around 59 µg/m³ PM2.5 (unhealthy), about 2.1× the cleanest month (August, 28 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Wuxi's WHO annual average of 43.5 µg/m³.

020406080JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModeratePoorUnhealthyDec 2259 µg/m³Aug 1028 µg/m³
PM2.5 (µg/m³)Level
Jan58Unhealthy
Feb53Poor
Mar52Poor
Apr47Poor
May39Poor
Jun34Moderate
Jul28Moderate
Aug28Moderate
Sep34Moderate
Oct42Poor
Nov49Poor
Dec59Unhealthy
Location & terrain

Where is Wuxi?

Wuxi sits at 31.6°N, 120.3°E, 10 m above sea level, in China. The nearest listed city is Suzhou, 41 km away.

Qingdao

Topography around Wuxi

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Wuxi.

Within 3 km, the terrain around Wuxi has only modest variations in elevation — a maximum elevation change of 222 m around an average of 9 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 323 m; within 80 km, large variations in elevation — a maximum elevation change of 669 m.

The land around Wuxi is covered by artificial surfaces (75%) within 3 km, artificial surfaces (48%) within 16 km, and cropland (35%), artificial surfaces (27%) and water (21%) within 80 km.

3 km
222 m
16 km
323 m
80 km
669 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Suzhou 41 km · Shanghai 118 km · Pingyao 134 km · Hangzhou 142 km · Nanjing 153 km · Ningbo 223 km · Tunxi 280 km · Qingdao 500 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
unaffiliated 52%folk religion 22%Buddhist 18%Christian 5%

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 Wuxi (31.5689°, 120.2886°, elevation 10 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).