Hefei, China — Weather in September 2026

Monthly climate averages for Hefei, China. Based on 10-year ERA5 reanalysis data.

Cfa Humid Subtropical
7.7 /10
Excellent

September is an excellent month in Hefei

Climate Overview

Hefei, China in September has hot conditions, with highs reaching 28.6°C (83°F) and afternoons the warmest part of the day.

This month falls at the beginning of Autumn.

Daily highs in September gradually drop from around 30°C (86°F) at the start to 27°C (81°F) by month's end.

Rainfall is heaviest during the last third of the month, while the first third tends to be drier.

Expect around 8.4h of sunshine at the start of September, decreasing to 7.4h by the end.

The warmest days tend to fall around the 6th, averaging 30.5°C (87°F).

Compared to August, this month is about 4°C cooler with 1 fewer rainy days. Temperatures begin dropping heading into October.

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Monthly September Averages

Temperature
29°C / 21°C
Feels Like
31°C / 23°C
Rain
9 days · 85 mm
Sunshine
8h / day
Humidity
74% — Muggy
Wind
14 km/h
Wind Direction
NE (56°)
Gusts
29 km/h
Daylight
12.4 h
Cloud Cover
59%
Clear Sky Days
4.9
UV Index
5.3 — High
Dew Point
20°C — Humid
Moon Phase
Waxing Crescent · 11%

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

36°C 32°C 28°C 24°C 20°C 16°C 12°C 151015202530
High Low

Daily Precipitation

0 mm 2 mm 4 mm 6 mm 8 mm 151015202530
Rainfall

Daily Sunshine

0h 3h 6h 9h 12h 151015202530
Sunshine

Daily Wind Speed

0 5 10 15 20 25 151015202530
Wind Speed
Sun Position
Sunrise 05:55
Daylight 12.4h
Sunset 18:17

What to Expect

Daytime temperatures around 29°C (83°F) are ideal for full-day outdoor exploration.

Rain usually comes in shorter passing showers rather than all-day rain.

2 of the last 5 yearly records were warmer than this month's long-run average.

Compare Months

January
Poor
Temp
8°C / 0°C
Feels Like
5°C / -4°C
Rain
8days (53 mm) Wet
Sun
6h Fair
Humidity
71% Muggy
UV
3.3 Moderate
Snow Days
3days
View Details
February
Poor
Temp
11°C / 1°C
Feels Like
7°C / -2°C
Rain
8days (48 mm) Wet
Sun
6.5h Fair
Humidity
70% Muggy
UV
3.9 Moderate
Snow Days
3days
View Details
March
Good
Temp
17°C / 8°C
Feels Like
15°C / 5°C
Rain
9days (69 mm) Wet
Sun
7.4h Good
Humidity
69% Muggy
UV
5.1 High
View Details
April best
Excellent
Temp
22°C / 13°C
Feels Like
22°C / 12°C
Rain
9days (86 mm) Wet
Sun
8.1h Good
Humidity
69% Muggy
UV
6 High
View Details
May best
Excellent
Temp
27°C / 18°C
Feels Like
28°C / 18°C
Rain
11days (120 mm) Wet
Sun
8.3h Good
Humidity
71% Muggy
UV
6.5 High
View Details
June
Wet
Temp
30°C / 22°C
Feels Like
33°C / 25°C
Rain
12days (186 mm) Wet
Sun
8.6h Good
Humidity
77% Humid
UV
6.4 High
View Details
July
Wet
Temp
32°C / 26°C
Feels Like
38°C / 31°C
Rain
15days (225 mm) Wet
Sun
8.9h Good
Humidity
80% Humid
UV
6.9 High
View Details
August
Poor
Temp
33°C / 26°C
Feels Like
38°C / 30°C
Rain
10days (121 mm) Wet
Sun
9.5h Good
Humidity
77% Humid
UV
7.2 Very High
View Details
September best
Excellent
Temp
29°C / 21°C
Feels Like
31°C / 23°C
Rain
9days (85 mm) Wet
Sun
8h Good
Humidity
74% Muggy
UV
5.3 High
View Details
October best
Excellent
Temp
22°C / 14°C
Feels Like
22°C / 14°C
Rain
9days (68 mm) Wet
Sun
6.6h Fair
Humidity
72% Muggy
UV
4.4 Moderate
View Details
November best
Excellent
Temp
17°C / 8°C
Feels Like
15°C / 6°C
Rain
5days (35 mm) Good
Sun
7h Good
Humidity
69% Muggy
UV
3.7 Moderate
View Details
December
Poor
Temp
10°C / 1°C
Feels Like
7°C / -3°C
Rain
5days (27 mm) Good
Sun
6.9h Fair
Humidity
67% Muggy
UV
3.3 Moderate
Snow Days
1days
View Details
Month Temp Feels Like Rain Sun Humidity UV Status
January 8°C / 0°C 5°C / -4°C 8days (53 mm) Wet 6h Fair 71% Muggy 3.3 Moderate Poor View Details
February 11°C / 1°C 7°C / -2°C 8days (48 mm) Wet 6.5h Fair 70% Muggy 3.9 Moderate Poor View Details
March 17°C / 8°C 15°C / 5°C 9days (69 mm) Wet 7.4h Good 69% Muggy 5.1 High Good View Details
April best 22°C / 13°C 22°C / 12°C 9days (86 mm) Wet 8.1h Good 69% Muggy 6 High Excellent View Details
May best 27°C / 18°C 28°C / 18°C 11days (120 mm) Wet 8.3h Good 71% Muggy 6.5 High Excellent View Details
June 30°C / 22°C 33°C / 25°C 12days (186 mm) Wet 8.6h Good 77% Humid 6.4 High Wet View Details
July 32°C / 26°C 38°C / 31°C 15days (225 mm) Wet 8.9h Good 80% Humid 6.9 High Wet View Details
August 33°C / 26°C 38°C / 30°C 10days (121 mm) Wet 9.5h Good 77% Humid 7.2 Very High Poor View Details
September best 29°C / 21°C 31°C / 23°C 9days (85 mm) Wet 8h Good 74% Muggy 5.3 High Excellent View Details
October best 22°C / 14°C 22°C / 14°C 9days (68 mm) Wet 6.6h Fair 72% Muggy 4.4 Moderate Excellent View Details
November best 17°C / 8°C 15°C / 6°C 5days (35 mm) Good 7h Good 69% Muggy 3.7 Moderate Excellent View Details
December 10°C / 1°C 7°C / -3°C 5days (27 mm) Good 6.9h Fair 67% Muggy 3.3 Moderate Poor View Details

What to Wear

Summer clothing like shorts, t-shirts, and sundresses will be comfortable. Bring a light cardigan for air-conditioned spaces.

A waterproof jacket or compact umbrella is recommended for occasional showers.

Packing List

UmbrellaBreathable clothingSunscreen (SPF 30+)Sun hatSunglassesComfortable walking shoes

Frequently Asked Questions

September is typically excellent for visiting Hefei, with average highs of 29°C (83°F) and around 9 rainy days. Hefei, China in September has hot conditions, with highs reaching 28.6°C (83°F) and afternoons the warmest part of the d
Hefei typically sees around 9 rainy days in September with 85 mm (3.3 in) of total rainfall. An umbrella should suffice.
Nights stay pleasantly warm in Hefei during September, around 21°C (70°F). Light evening wear is sufficient.
With highs of 29°C (83°F) and lows of 21°C (70°F) in September, we recommend: Umbrella, Breathable clothing, Sunscreen (SPF 30+), Sun hat, Sunglasses. Comfortable walking shoes are essential.
Yes, September offers some of the best weather conditions in Hefei with comfortable temperatures and lower chances of rain.
The average UV index in Hefei during September is 5 (moderate). Sunscreen and sunglasses are recommended during midday hours.
Hefei gets approximately 12 hours of daylight per day in September, with around 8 hours of sunshine.
Snow is uncommon in Hefei during September based on 10-year climate averages.

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