Guangzhou weather in September
In September, Guangzhou sees average daytime highs of 32°C and overnight lows near 25°C, with 177 mm of rain across 15.8 wet days and about 12.1 hours of daylight. It is the 4th-warmest and 6th-wettest month of the year here.
Highs ease over the month, from about 32°C in the first days to 31°C by the end. The sky is clear or mostly clear about 33% of the time in September, and the air most often feels miserable.
Daylight stretches from about 12 h 30 min at the start of September to 11 h 48 min by month's end. Set against the rest of the year, September is Guangzhou's 5th-clearest and 11th-windiest month. For the whole year in context, see Guangzhou's year-round climate.
- Daytime high
- 32°
- 4th warmest
- Overnight low
- 25°
- 9th coldest
- Rainfall
- 177 mm
- 15.8 wet days
- Daylight
- 12 h 06 min
- 6:17 AM – 6:25 PM
- Cloud cover
- 60%
- 5th clearest
- Wind
- 9 km/h
- 11th windiest
- Solar energy
- 4.68 kWh/m²
- Travel score
- 3.6
- out of 10
Guangzhou is capital city of Guangdong Province, China.
- Air quality
- Very high
- PM2.5 36.4 µg/m³ · 2018
- Density
- 2,221/km²
- people per km²
- Founded
- ~214 BCE
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in September
Highs ease over the month, from about 32°C in the first days to 31°C by the end.
A typical September day in Guangzhou reaches about 32°C in the afternoon and slips back to 25°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 34°C. Set against its neighbours, September runs about 1°C cooler than August and about 3°C warmer than October.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 33 | 33 | 33 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 |
| Avg low (°C) | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 24 | 24 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 33 | 26 |
| 2 | 33 | 26 |
| 3 | 33 | 26 |
| 4 | 32 | 26 |
| 5 | 32 | 26 |
| 6 | 32 | 26 |
| 7 | 32 | 26 |
| 8 | 32 | 26 |
| 9 | 32 | 26 |
| 10 | 32 | 26 |
| 11 | 32 | 26 |
| 12 | 32 | 26 |
| 13 | 32 | 26 |
| 14 | 32 | 26 |
| 15 | 32 | 25 |
| 16 | 32 | 25 |
| 17 | 32 | 25 |
| 18 | 32 | 25 |
| 19 | 32 | 25 |
| 20 | 32 | 25 |
| 21 | 32 | 25 |
| 22 | 31 | 25 |
| 23 | 31 | 25 |
| 24 | 31 | 25 |
| 25 | 31 | 25 |
| 26 | 31 | 25 |
| 27 | 31 | 24 |
| 28 | 31 | 24 |
| 29 | 31 | 24 |
| 30 | 31 | 24 |
How September really feels in Guangzhou
Once humidity and wind are folded in, September averages 30 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Guangzhou weather by month
How September compares with the rest of the year at a glance. September is the 4th-warmest and 6th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 19° / 12° | 41 | 6.4 | 10.7 | 6.6 |
| Feb | 20° / 13° | 55 | 8.9 | 11.2 | 6.1 |
| Mar | 23° / 17° | 117 | 14.3 | 11.8 | 5.8 |
| Apr | 27° / 21° | 197 | 16.5 | 12.5 | 5.1 |
| May | 30° / 24° | 290 | 21 | 13.1 | 3.5 |
| Jun | 32° / 26° | 336 | 22.7 | 13.4 | 2.6 |
| Jul | 33° / 27° | 229 | 21.8 | 13.3 | 2.4 |
| Aug | 33° / 27° | 265 | 22.1 | 12.8 | 2.5 |
| Sep | 32° / 25° | 177 | 15.8 | 12.1 | 3.6 |
| Oct | 29° / 22° | 58 | 6.4 | 11.5 | 6.1 |
| Nov | 25° / 18° | 35 | 5.3 | 10.9 | 7.7 |
| Dec | 21° / 13° | 37 | 4.7 | 10.6 | 7.4 |
Cloud cover in September
The sky is clear or mostly clear about 33% of the time in September.
Beyond those clear spells, partly cloudy skies cover about 18% of September, with mostly cloudy or overcast conditions the remaining 50%. Skies tend to open up as the month goes on.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 36 | 36 | 36 | 38 | 39 | 40 | 42 | 43 | 44 | 45 | 48 | 49 | 50 | 51 | 52 | 54 | 54 | 55 | 55 | 56 | 56 | 56 | 57 | 58 | 58 | 59 | 59 | 59 | 60 | 61 |
| Cloudier (%) | 64 | 64 | 64 | 62 | 61 | 60 | 58 | 57 | 56 | 55 | 52 | 51 | 50 | 49 | 48 | 46 | 46 | 45 | 45 | 44 | 44 | 44 | 43 | 42 | 42 | 41 | 41 | 41 | 40 | 39 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 36 | 64 |
| 2 | 36 | 64 |
| 3 | 36 | 64 |
| 4 | 38 | 62 |
| 5 | 39 | 61 |
| 6 | 40 | 60 |
| 7 | 42 | 58 |
| 8 | 43 | 57 |
| 9 | 44 | 56 |
| 10 | 45 | 55 |
| 11 | 48 | 52 |
| 12 | 49 | 51 |
| 13 | 50 | 50 |
| 14 | 51 | 49 |
| 15 | 52 | 48 |
| 16 | 54 | 46 |
| 17 | 54 | 46 |
| 18 | 55 | 45 |
| 19 | 55 | 45 |
| 20 | 56 | 44 |
| 21 | 56 | 44 |
| 22 | 56 | 44 |
| 23 | 57 | 43 |
| 24 | 58 | 42 |
| 25 | 58 | 42 |
| 26 | 59 | 41 |
| 27 | 59 | 41 |
| 28 | 59 | 41 |
| 29 | 60 | 40 |
| 30 | 61 | 39 |
Chance of precipitation in September
Guangzhou gets around 177 mm of rain over 15.8 wet days in September. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 51% and peaks near 66% on the wettest days. The odds ease toward the end of the month.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 66 | 66 | 65 | 65 | 64 | 64 | 63 | 62 | 61 | 60 | 58 | 56 | 55 | 53 | 51 | 50 | 48 | 47 | 46 | 45 | 43 | 42 | 41 | 40 | 39 | 38 | 38 | 36 | 35 | 34 |
| Rain chance (%) | |
|---|---|
| 1 | 66 |
| 2 | 66 |
| 3 | 65 |
| 4 | 65 |
| 5 | 64 |
| 6 | 64 |
| 7 | 63 |
| 8 | 62 |
| 9 | 61 |
| 10 | 60 |
| 11 | 58 |
| 12 | 56 |
| 13 | 55 |
| 14 | 53 |
| 15 | 51 |
| 16 | 50 |
| 17 | 48 |
| 18 | 47 |
| 19 | 46 |
| 20 | 45 |
| 21 | 43 |
| 22 | 42 |
| 23 | 41 |
| 24 | 40 |
| 25 | 39 |
| 26 | 38 |
| 27 | 38 |
| 28 | 36 |
| 29 | 35 |
| 30 | 34 |
Humidity in September
Most of September feels miserable — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, September lands in the miserable band about 53% of days. Sticky, muggy-or-worse air turns up on roughly 94% of them.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 |
| Comfortable (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 |
| Humid (%) | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 3 | 3 | 4 | 4 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 8 | 9 | 10 | 11 |
| Muggy (%) | 2 | 2 | 3 | 3 | 4 | 4 | 5 | 6 | 6 | 7 | 8 | 9 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 22 | 23 | 23 | 23 |
| Oppressive (%) | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 25 | 26 | 27 | 28 | 29 | 30 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 38 | 39 | 39 | 39 | 39 | 39 | 39 |
| Miserable (%) | 84 | 83 | 81 | 79 | 77 | 76 | 74 | 71 | 70 | 68 | 65 | 62 | 60 | 57 | 55 | 52 | 49 | 47 | 44 | 42 | 39 | 37 | 35 | 33 | 31 | 29 | 27 | 26 | 24 | 23 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|---|
| 1 | 0 | 0 | 0 | 2 | 14 | 84 |
| 2 | 0 | 0 | 0 | 2 | 15 | 83 |
| 3 | 0 | 0 | 0 | 3 | 16 | 81 |
| 4 | 0 | 0 | 1 | 3 | 17 | 79 |
| 5 | 0 | 0 | 1 | 4 | 18 | 77 |
| 6 | 0 | 0 | 1 | 4 | 19 | 76 |
| 7 | 0 | 0 | 1 | 5 | 20 | 74 |
| 8 | 0 | 0 | 2 | 6 | 21 | 71 |
| 9 | 0 | 0 | 2 | 6 | 22 | 70 |
| 10 | 0 | 0 | 2 | 7 | 23 | 68 |
| 11 | 0 | 0 | 2 | 8 | 25 | 65 |
| 12 | 0 | 0 | 3 | 9 | 26 | 62 |
| 13 | 0 | 1 | 3 | 9 | 27 | 60 |
| 14 | 0 | 1 | 4 | 10 | 28 | 57 |
| 15 | 0 | 1 | 4 | 11 | 29 | 55 |
| 16 | 0 | 1 | 5 | 12 | 30 | 52 |
| 17 | 0 | 1 | 5 | 13 | 32 | 49 |
| 18 | 0 | 1 | 5 | 14 | 33 | 47 |
| 19 | 0 | 1 | 6 | 15 | 34 | 44 |
| 20 | 0 | 1 | 6 | 16 | 35 | 42 |
| 21 | 0 | 1 | 6 | 17 | 36 | 39 |
| 22 | 0 | 2 | 6 | 18 | 37 | 37 |
| 23 | 0 | 2 | 6 | 19 | 38 | 35 |
| 24 | 0 | 2 | 7 | 20 | 38 | 33 |
| 25 | 0 | 2 | 7 | 21 | 39 | 31 |
| 26 | 1 | 2 | 7 | 22 | 39 | 29 |
| 27 | 1 | 2 | 8 | 22 | 39 | 27 |
| 28 | 1 | 3 | 9 | 23 | 39 | 26 |
| 29 | 1 | 3 | 10 | 23 | 39 | 24 |
| 30 | 1 | 3 | 11 | 23 | 39 | 23 |
Wind in September
Winds average 9 km/h in September.
Across September, daily wind ranges from about 8 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 8 | calm |
| 2 | 8 | calm |
| 3 | 8 | calm |
| 4 | 8 | calm |
| 5 | 8 | calm |
| 6 | 8 | calm |
| 7 | 8 | calm |
| 8 | 8 | calm |
| 9 | 8 | calm |
| 10 | 8 | calm |
| 11 | 9 | calm |
| 12 | 9 | calm |
| 13 | 9 | calm |
| 14 | 9 | calm |
| 15 | 9 | calm |
| 16 | 9 | calm |
| 17 | 9 | calm |
| 18 | 9 | calm |
| 19 | 9 | calm |
| 20 | 9 | calm |
| 21 | 9 | calm |
| 22 | 9 | calm |
| 23 | 9 | calm |
| 24 | 9 | calm |
| 25 | 9 | calm |
| 26 | 9 | calm |
| 27 | 9 | calm |
| 28 | 9 | calm |
| 29 | 9 | calm |
| 30 | 10 | calm |
Sunrise & sunset in September
Daylight runs from about 12 h 30 min at the start of September to 11 h 48 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 42 minutes over September. Sunrise moves from 6:13 AM to 6:22 AM, and sunset from 6:41 PM to 6:11 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 12.5 | 12.4 | 12.4 | 12.4 | 12.4 | 12.4 | 12.3 | 12.3 | 12.3 | 12.3 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.1 | 12.1 | 12.1 | 12.1 | 12.0 | 12.0 | 12.0 | 12.0 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 11.8 | 11.8 |
| Sunrise (AM) | 6:13 | 6:13 | 6:13 | 6:14 | 6:14 | 6:14 | 6:15 | 6:15 | 6:15 | 6:15 | 6:16 | 6:16 | 6:16 | 6:17 | 6:17 | 6:17 | 6:18 | 6:18 | 6:18 | 6:19 | 6:19 | 6:19 | 6:20 | 6:20 | 6:20 | 6:21 | 6:21 | 6:21 | 6:22 | 6:22 |
| Sunset (PM) | 6:41 | 6:40 | 6:39 | 6:38 | 6:37 | 6:36 | 6:35 | 6:34 | 6:33 | 6:32 | 6:31 | 6:30 | 6:28 | 6:27 | 6:26 | 6:25 | 6:24 | 6:23 | 6:22 | 6:21 | 6:20 | 6:19 | 6:18 | 6:17 | 6:16 | 6:15 | 6:14 | 6:13 | 6:12 | 6:11 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.5 | 6:13 | 6:41 |
| 2 | 12.4 | 6:13 | 6:40 |
| 3 | 12.4 | 6:13 | 6:39 |
| 4 | 12.4 | 6:14 | 6:38 |
| 5 | 12.4 | 6:14 | 6:37 |
| 6 | 12.4 | 6:14 | 6:36 |
| 7 | 12.3 | 6:15 | 6:35 |
| 8 | 12.3 | 6:15 | 6:34 |
| 9 | 12.3 | 6:15 | 6:33 |
| 10 | 12.3 | 6:15 | 6:32 |
| 11 | 12.2 | 6:16 | 6:31 |
| 12 | 12.2 | 6:16 | 6:30 |
| 13 | 12.2 | 6:16 | 6:28 |
| 14 | 12.2 | 6:17 | 6:27 |
| 15 | 12.2 | 6:17 | 6:26 |
| 16 | 12.1 | 6:17 | 6:25 |
| 17 | 12.1 | 6:18 | 6:24 |
| 18 | 12.1 | 6:18 | 6:23 |
| 19 | 12.1 | 6:18 | 6:22 |
| 20 | 12.0 | 6:19 | 6:21 |
| 21 | 12.0 | 6:19 | 6:20 |
| 22 | 12.0 | 6:19 | 6:19 |
| 23 | 12.0 | 6:20 | 6:18 |
| 24 | 11.9 | 6:20 | 6:17 |
| 25 | 11.9 | 6:20 | 6:16 |
| 26 | 11.9 | 6:21 | 6:15 |
| 27 | 11.9 | 6:21 | 6:14 |
| 28 | 11.9 | 6:21 | 6:13 |
| 29 | 11.8 | 6:22 | 6:12 |
| 30 | 11.8 | 6:22 | 6:11 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 4.68 kWh/m².
For context, solar energy here swings from a low near 2.95 kWh/m² to a high of 5.07 kWh/m² in July across the year — September's 4.68 kWh/m² sits near the top of that range.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 4.8 | 4.8 | 4.8 | 4.8 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 4.8 | Bright |
| 2 | 4.8 | Bright |
| 3 | 4.8 | Bright |
| 4 | 4.8 | Bright |
| 5 | 4.7 | Bright |
| 6 | 4.7 | Bright |
| 7 | 4.7 | Bright |
| 8 | 4.7 | Bright |
| 9 | 4.7 | Bright |
| 10 | 4.7 | Bright |
| 11 | 4.8 | Bright |
| 12 | 4.8 | Bright |
| 13 | 4.8 | Bright |
| 14 | 4.8 | Bright |
| 15 | 4.8 | Bright |
| 16 | 4.7 | Bright |
| 17 | 4.7 | Bright |
| 18 | 4.7 | Bright |
| 19 | 4.7 | Bright |
| 20 | 4.7 | Bright |
| 21 | 4.7 | Bright |
| 22 | 4.7 | Bright |
| 23 | 4.7 | Bright |
| 24 | 4.7 | Bright |
| 25 | 4.7 | Bright |
| 26 | 4.7 | Bright |
| 27 | 4.7 | Bright |
| 28 | 4.7 | Bright |
| 29 | 4.7 | Bright |
| 30 | 4.7 | Bright |
Hazard calendar for Guangzhou
In September, Guangzhou sits inside its pacific typhoon and monsoon season. The full year is below, with each hazard's peak months called out.
Guangzhou sits in the Pacific typhoon belt; the season peaks July–October.
Guangzhou's monsoon runs April–September, when most of the year's rain falls.
Is September a good time to visit Guangzhou?
Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
September is a weaker month for outdoor sightseeing in Guangzhou.
What to pack for Guangzhou in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, Guangzhou sees daytime highs around 32°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 16 days see rain.
Sea temperature near Guangzhou in September
The nearest coast averages about 28°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 67 km away) is warmest in August at about 29°C and coldest in February near 18°C.
It's comfortable for a long swim from Mar 21 to Dec 17 — about 8.9 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 18 | 18 | 20 | 22 | 26 | 28 | 29 | 29 | 28 | 27 | 23 | 20 |
| Comfort | Cool | Cool | Cool | Refreshing | Warm | Warm | Tropical | Tropical | Tropical | Warm | Refreshing | Refreshing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 18 | Cool |
| Feb | 18 | Cool |
| Mar | 20 | Cool |
| Apr | 22 | Refreshing |
| May | 26 | Warm |
| Jun | 28 | Warm |
| Jul | 29 | Tropical |
| Aug | 29 | Tropical |
| Sep | 28 | Tropical |
| Oct | 27 | Warm |
| Nov | 23 | Refreshing |
| Dec | 20 | Refreshing |
UV index in Guangzhou in September
Clear-sky midday UV in September peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Guangzhou peaks around July 16 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 12 at about 6 (high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 6 | 7 | 8 | 8 | 10 | 10 | 12 | 10 | 9 | 8 | 7 | 6 |
| Level | High | High | Very high | Very high | Very high | Extreme | Extreme | Very high | Very high | Very high | High | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 6 | High |
| Feb | 7 | High |
| Mar | 8 | Very high |
| Apr | 8 | Very high |
| May | 10 | Very high |
| Jun | 10 | Extreme |
| Jul | 12 | Extreme |
| Aug | 10 | Very high |
| Sep | 9 | Very high |
| Oct | 8 | Very high |
| Nov | 7 | High |
| Dec | 6 | High |
Air quality in Guangzhou in September
Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.
Air quality in Guangzhou is worst in January — around 47 µg/m³ PM2.5 (poor), about 2.0× the cleanest month (July, 24 µg/m³).
Seasonal pattern from CAMS reanalysis, scaled to Guangzhou's WHO annual average of 36.4 µg/m³.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 47 | 45 | 42 | 37 | 31 | 25 | 24 | 29 | 39 | 37 | 42 | 39 |
| Level | Poor | Poor | Poor | Poor | Moderate | Moderate | Moderate | Moderate | Poor | Poor | Poor | Poor |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 47 | Poor |
| Feb | 45 | Poor |
| Mar | 42 | Poor |
| Apr | 37 | Poor |
| May | 31 | Moderate |
| Jun | 25 | Moderate |
| Jul | 24 | Moderate |
| Aug | 29 | Moderate |
| Sep | 39 | Poor |
| Oct | 37 | Poor |
| Nov | 42 | Poor |
| Dec | 39 | Poor |
Where is Guangzhou?
Guangzhou sits at 23.1°N, 113.3°E, 15 m above sea level, in China. The nearest listed city is Zhuhai, 99 km away.
Topography around Guangzhou
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Guangzhou.
Within 3 km, the terrain around Guangzhou has only modest variations in elevation — a maximum elevation change of 64 m around an average of 12 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 371 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,285 m.
The land around Guangzhou is covered by artificial surfaces (79%) within 3 km, artificial surfaces (65%) and trees (21%) within 16 km, and trees (49%) and artificial surfaces (26%) within 80 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
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 Guangzhou (23.1167°, 113.25°, elevation 15 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). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).