Weather in Nanjing in March
China · 20-year averages, March
A good month. March is a solid month to be in Nanjing. Highs average 15.9 °C, lows 4.1 °C, and rain falls on 8 days — nothing in the month is working against you.
March ranks 6 of 12 in Nanjing: past the worst of the year but short of October, which is the month to book if the dates are open.
Rain on 8 days, 2 of them heavy. Enough to need a plan B, not enough to need a plan around it. Pack for 15.9 °C days and 4.1 °C nights; the spread matters more here than any single number.
What the averages hide
Averages flatten a month, and this one hides a few things: 5 nights fall below freezing. Across the twenty years measured, the hottest March day reached 28.3 °C and the coldest night fell to -7.6 °C, and the wettest single day dropped 39 mm — roughly 56% of the month's rain in one day.
March is moderately variable: 16 mm in the driest year against 130 mm in the wettest, around an average of 70 mm. Roughly two Marchs in three land near that average, and the third does something else entirely.
Wind is light at 10.5 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 75%, high enough to notice on the warm days without dominating them.
How March sits in the year
The month is on the way up: 5.4 °C warmer than February, and April adds another 6.2 °C. Late in the month feels noticeably different from the start of it, which is worth knowing if the trip is short.
Daylight in March
11.9 hours of daylight, gaining 1 hours across the month. That is between Nanjing's extremes of 14.2 and 10.1 hours, so days are long enough not to constrain the plan.
An inland climate
With no coast nearby, the year swings a fair way — 34.2 °C between the warmest afternoons and the coldest nights, wider than any coastal city at this latitude would manage.
How busy it gets
Shoulder. The value months — prices ease off and you get the place closer to itself.
Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.
March in Nanjing versus nearby
If Nanjing is one option among several, the nearby comparison is worth making. Hangzhou is close enough to be a coin toss — within a degree on temperature, 4 days more rain. Shanghai is the weaker option in March — within a degree on temperature, 3 days more rain.
So: March works, with October the better month by 15 points if the dates can move. If they cannot, nothing here should stop you booking.
Every month in Nanjing
| Month | High °C | Low °C | Rain days | Rain mm | Humidity % | Daylight h | Score |
|---|---|---|---|---|---|---|---|
| January | 7.5 | -2 | 8 | 52 | 77 | 10.3 | 41 |
| February | 10.5 | 0.1 | 9 | 64 | 78 | 11 | 52 |
| March | 15.9 | 4.1 | 8 | 70 | 75 | 11.9 | 71 |
| April | 22.1 | 10 | 9 | 95 | 73 | 12.9 | 81 |
| May | 27.5 | 15.8 | 9 | 87 | 71 | 13.8 | 79 |
| June | 30.8 | 20.6 | 12 | 181 | 74 | 14.2 | 57 |
| July | 32.2 | 24.7 | 16 | 243 | 82 | 14.1 | 40 |
| August | 31.9 | 24.1 | 15 | 155 | 81 | 13.4 | 46 |
| September | 28.5 | 19 | 9 | 94 | 78 | 12.4 | 75 |
| October | 23.6 | 12.7 | 7 | 55 | 73 | 11.4 | 86 |
| November | 17.1 | 6.1 | 7 | 59 | 75 | 10.5 | 77 |
| December | 9.6 | -0.3 | 7 | 42 | 75 | 10.1 | 48 |
See all twelve months in Nanjing, or where else to go in March.
Planning the rest of the trip
- Flight time to Nanjing how long you are actually in the air
- Nanjing time zone and the difference from home
- Days until your trip count down to the departure date