Nanjing weather in April

In April, Nanjing sees average daytime highs of 21°C and overnight lows near 12°C, with 94 mm of rain across 9.1 wet days and about 12.8 hours of daylight. It is the 7th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 18°C in the first days to 23°C by the end. The sky is clear or mostly clear about 25% of the time in April, and the air most often feels dry.

Daylight stretches from about 12 h 18 min at the start of April to 13 h 12 min by month's end. Set against the rest of the year, April is Nanjing's 8th-clearest and 2nd-windiest month. For the whole year in context, see Nanjing's year-round climate.

Daytime high
21°
7th warmest
Overnight low
12°
6th coldest
Rainfall
94 mm
9.1 wet days
Daylight
12 h 48 min
5:42 AM – 6:29 PM
Cloud cover
66%
8th clearest
Wind
11 km/h
2nd windiest
Solar energy
4.97 kWh/m²
Travel score
6.4
out of 10

Nanjing is capital city of Jiangsu Province, China, former capital of the Republic of China and China's Ming dynasty.

Air quality
Very high
PM2.5 44.7 µg/m³ · 2018
Density
1,414/km²
people per km²
Founded
~494 BCE

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

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 18°C in the first days to 23°C by the end.

A typical April day in Nanjing reaches about 21°C in the afternoon and slips back to 12°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 27°C. Set against its neighbours, April runs about 6°C warmer than March and about 5°C cooler than May.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
1189
2189
31810
41810
51910
61910
71910
81910
92011
102011
112011
122011
132011
142112
152112
162112
172112
182112
192213
202213
212213
222213
232213
242314
252314
262314
272314
282314
292414
302415

How April really feels in Nanjing

Once humidity and wind are folded in, April 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

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

Nanjing weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 558210.11.0
Feb10° / 558.31.310.82.2
Mar15° / 80100.411.84.3
Apr21° / 12°949.1012.86.4
May26° / 17°1219.8013.66.6
Jun29° / 22°22211.9014.15.2
Jul32° / 25°21015.1013.93.5
Aug31° / 25°17414.4013.23.9
Sep27° / 20°818.4012.26.4
Oct22° / 14°546.3011.27.4
Nov16° / 536.80.110.45.5
Dec10° / 345.60.49.92.4

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 11% of April, with mostly cloudy or overcast conditions the remaining 63%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13565
23664
33664
43664
53664
63664
73664
83664
93664
103664
113664
123565
133664
143565
153565
163664
173664
183565
193664
203763
213763
223763
233763
243862
253862
263961
273961
283961
294060
303961

Chance of precipitation in April

Any precipitation

Nanjing gets around 94 mm of rain over 9.1 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 30% and peaks near 31% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
131
230
330
430
530
629
729
829
929
1029
1129
1230
1330
1430
1530
1630
1731
1831
1931
2031
2131
2231
2331
2431
2531
2631
2731
2831
2931
3031

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, April lands in the dry band about 68% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1879400
28610400
38511400
48412400
58313400
68114500
78015500
87916500
97817500
107718500
117619500
127320610
137221610
147221610
157022710
167022710
176822820
186723820
196723820
206424930
2162251030
2260251140
2358261240
2455261351
2553261461
2652261561
2750261671
2848261771
2947261881
3045261991

Wind in April

Winds average 11 km/h in April.

Across April, daily wind ranges from about 11 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 18 min at the start of April to 13 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 54 minutes over April. Sunrise moves from 6:01 AM to 5:26 AM, and sunset from 6:18 PM to 6:39 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:016:18
212.35:596:19
312.45:586:20
412.45:576:20
512.45:556:21
612.55:546:22
712.55:536:22
812.55:526:23
912.65:506:24
1012.65:496:25
1112.65:486:25
1212.75:466:26
1312.75:456:27
1412.75:446:27
1512.85:436:28
1612.85:426:29
1712.85:406:29
1812.95:396:30
1912.95:386:31
2012.95:376:32
2112.95:366:32
2213.05:346:33
2313.05:336:34
2413.05:326:34
2513.15:316:35
2613.15:306:36
2713.15:296:37
2813.25:286:37
2913.25:276:38
3013.25:266:39

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 4.97 kWh/m².

For context, solar energy here swings from a low near 2.53 kWh/m² to a high of 5.28 kWh/m² in May across the year — April's 4.97 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.7Bright
44.7Bright
54.7Bright
64.8Bright
74.8Bright
84.8Bright
94.8Bright
104.9Bright
114.9Bright
124.9Bright
134.9Bright
144.9Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
205.0Bright
215.1Bright
225.1Bright
235.1Bright
245.1Bright
255.1Bright
265.2Bright
275.2Bright
285.2Bright
295.2Bright
305.2Bright
Planning a trip in April

Hazard calendar for Nanjing

In seasonPeak

In April, Nanjing sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.

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

Nanjing'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 April a good time to visit Nanjing?

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

6.4
Sightseeing
3rd-best month of the year
3.8
Beach & pool
7th-best month of the year

April is a reasonable time to visit Nanjing for sightseeing.

What to pack for Nanjing in April

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

In April, Nanjing sees daytime highs around 21°C and nights near 12°C. Worth packing: rain gear and sun protection. About 9 days see rain.

rain gearsun protection

UV index in Nanjing in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Nanjing peaks around July 21 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 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 highModerateJul 21UV 9Dec 17UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar6High
Apr6High
May7High
Jun6High
Jul9Very high
Aug8Very high
Sep9Very high
Oct5Moderate
Nov3Moderate
Dec3Moderate

Air quality in Nanjing in April

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Nanjing is worst in January — around 59 µg/m³ PM2.5 (unhealthy), about 2.0× the cleanest month (August, 29 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Nanjing's WHO annual average of 44.7 µg/m³.

020406080JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModeratePoorUnhealthyJan 1059 µg/m³Aug 929 µg/m³
PM2.5 (µg/m³)Level
Jan59Unhealthy
Feb55Poor
Mar53Poor
Apr48Poor
May42Poor
Jun36Poor
Jul29Moderate
Aug29Moderate
Sep35Poor
Oct44Poor
Nov49Poor
Dec58Unhealthy
Location & terrain

Where is Nanjing?

Nanjing sits at 32.1°N, 118.8°E, 22 m above sea level, in China. The nearest listed city is Wuxi, 153 km away.

NingboWuhan

Topography around Nanjing

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

Within 3 km, the terrain around Nanjing has only modest variations in elevation — a maximum elevation change of 59 m around an average of 15 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 514 m; within 80 km, large variations in elevation — a maximum elevation change of 611 m.

The land around Nanjing is covered by artificial surfaces (66%) and trees (22%) within 3 km, artificial surfaces (46%) and trees (28%) within 16 km, and cropland (51%) and trees (28%) within 80 km.

3 km
59 m
16 km
514 m
80 km
611 m
treesgrasslandcroplandartificial surfacesbare terrainwater
April weather nearby: Wuxi 153 km · Suzhou 192 km · Pingyao 216 km · Hangzhou 237 km · Tunxi 265 km · Shanghai 270 km · Ningbo 359 km · Wuhan 459 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 Nanjing (32.0617°, 118.7778°, elevation 22 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).