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Nanjing in January: Weather, Average temperature and Climate

Planning a trip and want to know what the weather in Nanjing in January will be like? Take a look at our weather guide for Nanjing, based on historical data.
Check flight prices to Nanjing on Avionero:
January

Weather in Nanjing in January 2026

OK Weather
Chill
☁️
Cloudy
If you plan to visit Nanjing in January, the weather is typically alright, with an average high temperature of +45°F during the day and approximately 8 sunny days. Expect some rainy, though, as there are typically 7 rainy days in the month and around 38 mm of precipitation. The weather is changeable so you may have to pack for every eventuality. Search flights in one click on Avionero.
Good to know:
  • January is usually the coldest month of the year in Nanjing;

Average weather

☀️
+45°F
Avg. max. temperature
+12°F
Min.
+68°F
Max.
38 mm
Total precipitation
76%
Avg. humidity
2 m/s
Avg. wind
8 ☀️
Sunny Days
13 ⛅️
Cloudy
7 🌦
Rainy
Our opinion: Nanjing has OK weather in January.

Average temperature in Nanjing in January

Here are the expected maximum, average and minimum temperatures in Nanjing for January based on the historical data.
Last Year
Historical Data

Going from a maximum of +68°F during the day to a minimum of +18°F during the night, the temperature in January averages around +50°F.

The average maximum temperature goes up 39% by the end of the month, compared with the beginning of the month, from +46°F to +66°F.

Is Nanjing warm or cold in January?

Nanjing is typically chill in January.

Maximum temperatures go down compared to the previous month from +48°F to +45°F. The minimum temperature also goes down from +34°F to +30°F.

Pack a jumper and a jacket as there will be cooler temperatures.

January is the coldest month in Nanjing, here is the comparison with other months:

Climate in Nanjing in January

Nanjing weather looks like this, on average, in January and the surrounding months.
DecemberJanuaryFebruary
Avg. temperature
+48°F+45°F+48°F
Min. temperature
+14°F+12°F+12°F
Max. temperature
+75°F+68°F+82°F
Rainfall
29 mm38 mm47 mm
Wind
2 m/s2 m/s2 m/s
Humidity
73%76%74%
Air pressure
1026 HPa1026 HPa1024 HPa
Sunny days
1185
Cloudy days
121313
Rainy days
678
Snowy days
133

January typically has worse weather conditions compared to December. It’s getting colder in January. From +48°F in the day, the average maximum temperature lowers to +45°F. Prepare for more rain. Average rainfall goes from 29 mm to 38 mm. Humidity rises from 73% to 76%. The average wind speed doesn’t change much during January, staying around 2 m/s. The days becoming less sunny, going from 11 sunny days in December to 8 in January.

February brings much the same weather, it remains ok.

Wind

Wind speed in Nanjing in January based on historical data.
Last Year
Historical Data

The average wind speed is 2 m/s getting up to 6 m/s which is a medium breeze. You can feel it, especially getting out of the water.

The average wind speed in Nanjing is gradually increasing during January, going from 2 m/s to 2 m/s over the course of the month.

Rain

Amount of rainfall in mm during January in Nanjing based on historical data.
Last Year
Historical Data
Typically, there is a 16% chance of rain on an average day in January, with total rainfall of approximately 29 mm. The maximum amount of rainfall per day is around 13 mm, which is considered light rain. On average, there are about 5 rainy days during January, so prepare to bring an umbrella.
Here’s how January is compared with other months in the amount of precipitation, total mm:
Nanjing wettest month is July, where a typical day has a 71% chance of precipitation and 230 mm of rainfall per day. December, on the other hand, is the driest month with a mere 19% chance of precipitation and 29 mm of rainfall per day.

Snow

Amount of snow in mm during January in Nanjing based on historical data.
Last Year
Historical Data
Typically, there is a 3% chance of snow on an average day in January, with a total monthly snowfall of approximately 2 mm.

January is one of the snowiest months in Nanjing.

Here’s how January is compared with other months in the amount of snow, total mm:

How was the weather last January in Nanjing?

This is the weather in Nanjing in January 2024:
1 January
☁️
+47°F
2 January
☁️
+48°F
3 January
☀️
+50°F
4 January
☀️
+54°F
5 January
☀️
+55°F
6 January
☀️
+60°F
7 January
☀️
+63°F
8 January
☀️
+69°F
9 January
☀️
+58°F
10 January
☀️
+52°F
11 January
☀️
+60°F
12 January
🌧️
+63°F
13 January
☁️
+61°F
14 January
🌨️
+43°F
15 January
☁️
+31°F
16 January
☀️
+36°F
17 January
☀️
+42°F
18 January
☀️
+46°F
19 January
☀️
+53°F
20 January
☀️
+47°F
21 January
☀️
+51°F
22 January
☁️
+45°F
23 January
☁️
+46°F
24 January
☀️
+31°F
25 January
☀️
+33°F
26 January
☀️
+42°F
27 January
☀️
+40°F
28 January
☀️
+45°F
29 January
☀️
+53°F
30 January
☀️
+59°F
31 January
☀️
+66°F
In January 2024 Nanjing had 23 sunny days, 6 cloudy days, and 1 rainy days. The average maximum temperature was +50°F, with an absolute maximum of +68°F and a minimum of +30°F. The average humidity was 69%, with a maximum of 100% and a minimum of 20%. The average wind speed was 2 m/s, with a maximum of 7 m/s and a minimum of 0 m/s.
Are you planning a trip in January?

Climate Change Over the Years

This is how Nanjing climate has changed over the last 43 years.

The climate in Nanjing in January has not changed that much over the last 43 years.

The average temperature was the lowest in 1980 (+65°F) and the highest in 2019 (+74°F). The driest year was 2019 with only 819 mm of rainfall, and the wettest year was 2020 with 4430 mm.

FAQ

Frequently asked questions about the weather in Nanjing in January:

Is January a good time to visit Nanjing?

It’s always a good time to visit Nanjing, but the weather is changeable in January, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.

Can you sunbathe in Nanjing in January?

Not really, January is not the best time to sunbathe, unless you visit a local solarium.

Is Nanjing rainy in January?

Nanjing is usually dry in January. Plan your packing around outdoor activities and exploring.

Is it sunny in Nanjing in January?

Usually, it’s not very sunny in Nanjing in January, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.

Other cities in China

Check out the weather for other cities in China.

Monthly weather in Nanjing

Source of the data

For this page, we’ve looked at the typical weather in Nanjing, based on historical hourly weather data from January 1, 1979, to December 31, 2023.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.