Hongkou weather history, September 2023

The month at a glance

Recorded day by day for Hongkou in September 2023: conditions, high and low temperature, wind, and sunrise and sunset times. History pages show archived readings, so they never change.

Warmest day

34 °C

Coldest day

19 °C

Average

26 °C

Days recorded

Calendar

Mo	Tu	We	Th	Fr	Sa	Su
				09-01 Overcast 24 °C to 30 °C 05:29 18:18	09-02 Overcast to Light rain 25 °C to 31 °C 05:30 18:17	09-03 Rainstorm to Overcast 25 °C to 30 °C 05:30 18:16
09-04 Overcast 25 °C to 32 °C 05:31 18:15	09-05 Overcast 25 °C to 30 °C 05:31 18:13	09-06 Overcast to Sunny 24 °C to 32 °C 05:32 18:12	09-07 Overcast to Sunny 24 °C to 32 °C 05:33 18:11	09-08 Overcast to Sunny 23 °C to 32 °C 05:33 18:10	09-09 Overcast to Cloudy 23 °C to 31 °C 05:34 18:08	09-10 Sunny to Cloudy 24 °C to 32 °C 05:34 18:07
09-11 Rainstorm to Overcast 25 °C to 32 °C 05:35 18:06	09-12 Moderate rain to Overcast 25 °C to 29 °C 05:36 18:04	09-13 Light rain 23 °C to 27 °C 05:36 18:03	09-14 Light rain 23 °C to 26 °C 05:37 18:02	09-15 Moderate rain 23 °C to 28 °C 05:37 18:01	09-16 Overcast to Sunny 23 °C to 27 °C 05:38 17:59	09-17 Overcast to Sunny 24 °C to 31 °C 05:38 17:58
09-18 Overcast to Sunny 26 °C to 33 °C 05:39 17:57	09-19 Cloudy to Overcast 26 °C to 34 °C 05:40 17:55	09-20 Moderate rain to Light rain 22 °C to 31 °C 05:40 17:54	09-21 Light rain 21 °C to 26 °C 05:41 17:53	09-22 Light rain 21 °C to 24 °C 05:41 17:51	09-23 Moderate rain to Light rain 21 °C to 21 °C 05:42 17:50	09-24 Light rain to Cloudy 24 °C to 24 °C 05:43 17:49
09-25 Overcast to Cloudy 21 °C to 29 °C 05:43 17:48	09-26 Overcast to Cloudy 24 °C to 29 °C 05:44 17:46	09-27 Overcast to Cloudy 24 °C to 30 °C 05:44 17:45	09-28 Overcast 25 °C to 29 °C 05:45 17:44	09-29 Overcast to Light rain 23 °C to 29 °C 05:46 17:42	09-30 Light rain to Sunny 19 °C to 25 °C 05:46 17:41

09-01

Overcast

24 °C to 30 °C

05:29 18:18

09-02

Overcast to Light rain

25 °C to 31 °C

05:30 18:17

09-03

Rainstorm to Overcast

25 °C to 30 °C

05:30 18:16

09-04

Overcast

25 °C to 32 °C

05:31 18:15

09-05

Overcast

25 °C to 30 °C

05:31 18:13

09-06

Overcast to Sunny

24 °C to 32 °C

05:32 18:12

09-07

Overcast to Sunny

24 °C to 32 °C

05:33 18:11

09-08

Overcast to Sunny

23 °C to 32 °C

05:33 18:10

09-09

Overcast to Cloudy

23 °C to 31 °C

05:34 18:08

09-10

Sunny to Cloudy

24 °C to 32 °C

05:34 18:07

09-11

Rainstorm to Overcast

25 °C to 32 °C

05:35 18:06

09-12

Moderate rain to Overcast

25 °C to 29 °C

05:36 18:04

09-13

Light rain

23 °C to 27 °C

05:36 18:03

09-14

Light rain

23 °C to 26 °C

05:37 18:02

09-15

Moderate rain

23 °C to 28 °C

05:37 18:01

09-16

Overcast to Sunny

23 °C to 27 °C

05:38 17:59

09-17

Overcast to Sunny

24 °C to 31 °C

05:38 17:58

09-18

Overcast to Sunny

26 °C to 33 °C

05:39 17:57

09-19

Cloudy to Overcast

26 °C to 34 °C

05:40 17:55

09-20

Moderate rain to Light rain

22 °C to 31 °C

05:40 17:54

09-21

Light rain

21 °C to 26 °C

05:41 17:53

09-22

Light rain

21 °C to 24 °C

05:41 17:51

09-23

Moderate rain to Light rain

21 °C to 21 °C

05:42 17:50

09-24

Light rain to Cloudy

24 °C to 24 °C

05:43 17:49

09-25

Overcast to Cloudy

21 °C to 29 °C

05:43 17:48

09-26

Overcast to Cloudy

24 °C to 29 °C

05:44 17:46

09-27

Overcast to Cloudy

24 °C to 30 °C

05:44 17:45

09-28

Overcast

25 °C to 29 °C

05:45 17:44

09-29

Overcast to Light rain

23 °C to 29 °C

05:46 17:42

09-30

Light rain to Sunny

19 °C to 25 °C

05:46 17:41

Day by day

Date	Conditions	Temperature	Wind	Sunrise and sunset
Friday 1 September	Overcast	24 °C to 30 °C	East to Northeast force <3	05:29 / 18:18
Saturday 2 September	Overcast to Light rain	25 °C to 31 °C	Northeast to North force <3	05:30 / 18:17
Sunday 3 September	Rainstorm to Overcast	25 °C to 30 °C	Northwest to East force <3	05:30 / 18:16
Monday 4 September	Overcast	25 °C to 32 °C	Northeast force <3	05:31 / 18:15
Tuesday 5 September	Overcast	25 °C to 30 °C	East to Northeast force <3	05:31 / 18:13
Wednesday 6 September	Overcast to Sunny	24 °C to 32 °C	East to Northeast force <3	05:32 / 18:12
Thursday 7 September	Overcast to Sunny	24 °C to 32 °C	East to Northeast force <3	05:33 / 18:11
Friday 8 September	Overcast to Sunny	23 °C to 32 °C	East force <3	05:33 / 18:10
Saturday 9 September	Overcast to Cloudy	23 °C to 31 °C	Northeast to East force <3	05:34 / 18:08
Sunday 10 September	Sunny to Cloudy	24 °C to 32 °C	North to East force <3	05:34 / 18:07
Monday 11 September	Rainstorm to Overcast	25 °C to 32 °C	East force <3	05:35 / 18:06
Tuesday 12 September	Moderate rain to Overcast	25 °C to 29 °C	Southeast force <3	05:36 / 18:04
Wednesday 13 September	Light rain	23 °C to 27 °C	North to West force <3	05:36 / 18:03
Thursday 14 September	Light rain	23 °C to 26 °C	West to Northeast force <3	05:37 / 18:02
Friday 15 September	Moderate rain	23 °C to 28 °C	East to North force <3	05:37 / 18:01
Saturday 16 September	Overcast to Sunny	23 °C to 27 °C	Northwest to West force <3	05:38 / 17:59
Sunday 17 September	Overcast to Sunny	24 °C to 31 °C	Southeast force <3	05:38 / 17:58
Monday 18 September	Overcast to Sunny	26 °C to 33 °C	Northeast to Southeast force <3	05:39 / 17:57
Tuesday 19 September	Cloudy to Overcast	26 °C to 34 °C	East to South force <3	05:40 / 17:55
Wednesday 20 September	Moderate rain to Light rain	22 °C to 31 °C	West to North force 3-4	05:40 / 17:54
Thursday 21 September	Light rain	21 °C to 26 °C	North force 3-4	05:41 / 17:53
Friday 22 September	Light rain	21 °C to 24 °C	Northeast force <3	05:41 / 17:51
Saturday 23 September	Moderate rain to Light rain	21 °C to 21 °C	Northeast to East force <3	05:42 / 17:50
Sunday 24 September	Light rain to Cloudy	24 °C to 24 °C	East to Southeast force <3	05:43 / 17:49
Monday 25 September	Overcast to Cloudy	21 °C to 29 °C	East to North force <3	05:43 / 17:48
Tuesday 26 September	Overcast to Cloudy	24 °C to 29 °C	East force <3	05:44 / 17:46
Wednesday 27 September	Overcast to Cloudy	24 °C to 30 °C	East to Northeast force <3	05:44 / 17:45
Thursday 28 September	Overcast	25 °C to 29 °C	East to Northeast force <3	05:45 / 17:44
Friday 29 September	Overcast to Light rain	23 °C to 29 °C	East to Northwest force <3	05:46 / 17:42
Saturday 30 September	Light rain to Sunny	19 °C to 25 °C	Northwest to North force <3	05:46 / 17:41

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About this data

History pages list the daily readings WuAi Weather archives from public meteorological feeds. They record what was measured in the past, they are not a forecast, and they are provided for reference only.

How to read this forecast

A short guide to Hongkou: what these numbers mean and how to plan around them.

Why one day shows two conditions

Forecasts split the day into daytime and night. The daily table gives both, with separate wind, so you know what to expect on the way out and on the way home.

What "to" means between two conditions

In "light rain to moderate rain" the word "to" describes a change during the day, not two things happening at once. Pack for the stronger half.

When the high and low actually happen

The daily maximum usually falls between 14:00 and 16:00, and the minimum around sunrise. Mornings feel colder than the headline number, so dress for the low.

Far forecasts are a trend, not a promise

Days 1 to 3 are reliable. Days 7 to 15 shift as systems are re-run, so treat them as a direction and re-check three days before anything important.

Reading wind force

Force is the Beaufort-style scale used by the source service. Up to 4 it barely matters; 5 to 6 makes an umbrella awkward and cycling unstable; 7 and above is when outdoor work, scaffolding and small boats should stop.

AQI is not PM2.5

AQI blends several pollutants, PM2.5 is one measurement. 0 to 50 is excellent, 51 to 100 good, and above 150 sensitive groups should cut hard outdoor exercise; above 200 consider a mask and keep windows shut.

The precipitation figure

The current reading is accumulated rainfall in millimetres over the recent period. Around 10 mm means moderate to heavy rain and puddles, so leave extra time.

Using historical weather

From the city page open History and choose a month to see day-by-day recorded conditions. Historical archives and live forecasts are produced on different pipelines, so small differences are normal.

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Current and hourly data is normally refreshed about every 15 minutes, and the daily forecast once a day. If a number looks frozen, reload the page.

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Short range is accurate, long range is a tendency. Use days 7 to 15 for the shape of the week rather than an exact figure and confirm close to your travel date.

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