Dali weather in September

In September, Dali sees average daytime highs of 23°C and overnight lows near 15°C, with 184 mm of rain across 24.5 wet days and about 12.2 hours of daylight. It is the 5th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 23°C through the month. The sky is clear or mostly clear about 6% of the time in September, and the air most often feels comfortable.

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 Dali's 9th-clearest and 11th-windiest month. For the whole year in context, see Dali's year-round climate.

Daytime high: 23°; 5th warmest
Overnight low: 15°; 9th coldest
Rainfall: 184 mm; 24.5 wet days
Daylight: 12 h 06 min; 7:09 AM – 7:18 PM
Cloud cover: 80%; 9th clearest
Wind: 4 km/h; 11th windiest
Solar energy: 4.15 kWh/m²
Travel score: 4.3; out of 10

Air quality: Elevated; PM2.5 17.6 µg/m³ · 2019

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

← August Dali year-round climate October →Best places to visit in September

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 23°C through the month.

A typical September day in Dali reaches about 23°C in the afternoon and slips back to 15°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 25°C. Set against its neighbours, September runs about 1°C cooler than August and about 2°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)	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	22	22	22	22	22	22	22
Avg low (°C)	16	16	16	16	16	16	16	16	16	16	16	16	16	16	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15

	Avg high (°C)	Avg low (°C)
1	23	16
2	23	16
3	23	16
4	23	16
5	23	16
6	23	16
7	23	16
8	23	16
9	23	16
10	23	16
11	23	16
12	23	16
13	23	16
14	23	16
15	23	15
16	23	15
17	23	15
18	23	15
19	23	15
20	23	15
21	23	15
22	23	15
23	23	15
24	22	15
25	22	15
26	22	15
27	22	15
28	22	15
29	22	15
30	22	15

Dali weather by month

How September compares with the rest of the year at a glance. September is the 5th-warmest and 3rd-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	15° / 3°	25	4.5	10.6	5.5
Feb	17° / 4°	22	4.8	11.1	6.5
Mar	20° / 7°	29	6	11.8	7.3
Apr	23° / 11°	37	5.9	12.6	7.5
May	24° / 14°	90	10.7	13.2	6.8
Jun	25° / 17°	174	21.7	13.6	4.7
Jul	24° / 17°	272	28.8	13.4	3.8
Aug	24° / 17°	275	26.8	12.9	4.1
Sep	23° / 15°	184	24.5	12.2	4.3
Oct	21° / 13°	97	15.7	11.4	5.6
Nov	18° / 7°	26	4.7	10.8	6.7
Dec	15° / 4°	13	2.9	10.4	5.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 6% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 80%.

	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 (%)	17	17	18	19	19	19	18	18	17	16	16	16	16	16	16	16	16	16	17	18	19	20	22	23	24	26	27	30	31	32
Cloudier (%)	83	83	82	81	81	81	82	82	83	84	84	84	84	84	84	84	84	84	83	82	81	80	78	77	76	74	73	70	69	68

	Clearer (%)	Cloudier (%)
1	17	83
2	17	83
3	18	82
4	19	81
5	19	81
6	19	81
7	18	82
8	18	82
9	17	83
10	16	84
11	16	84
12	16	84
13	16	84
14	16	84
15	16	84
16	16	84
17	16	84
18	16	84
19	17	83
20	18	82
21	19	81
22	20	80
23	22	78
24	23	77
25	24	76
26	26	74
27	27	73
28	30	70
29	31	69
30	32	68

Chance of precipitation in September

Any precipitation

Dali gets around 184 mm of rain over 24.5 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 81% and peaks near 83% 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 (%)	83	83	83	83	83	83	82	82	83	83	83	83	83	83	83	83	83	82	82	82	81	81	80	79	78	77	76	76	75	73

	Rain chance (%)
1	83
2	83
3	83
4	83
5	83
6	83
7	82
8	82
9	83
10	83
11	83
12	83
13	83
14	83
15	83
16	83
17	83
18	82
19	82
20	82
21	81
22	81
23	80
24	79
25	78
26	77
27	76
28	76
29	75
30	73

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels comfortable — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the comfortable band about 48% of days. It rarely turns muggy — the humid and sticky bands barely register.

	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 (%)	4	4	5	5	6	6	6	7	7	7	8	8	8	8	9	9	9	10	10	10	11	11	12	13	14	15	16	18	19	20
Comfortable (%)	30	31	32	33	34	36	37	38	39	40	41	43	44	45	47	48	50	51	53	54	55	57	58	60	61	62	63	63	64	65
Humid (%)	66	65	63	62	60	58	57	55	54	53	51	50	48	46	44	43	41	39	37	36	34	32	30	27	25	23	21	19	17	15

	Dry (%)	Comfortable (%)	Humid (%)
1	4	30	66
2	4	31	65
3	5	32	63
4	5	33	62
5	6	34	60
6	6	36	58
7	6	37	57
8	7	38	55
9	7	39	54
10	7	40	53
11	8	41	51
12	8	43	50
13	8	44	48
14	8	45	46
15	9	47	44
16	9	48	43
17	9	50	41
18	10	51	39
19	10	53	37
20	10	54	36
21	11	55	34
22	11	57	32
23	12	58	30
24	13	60	27
25	14	61	25
26	15	62	23
27	16	63	21
28	18	63	19
29	19	64	17
30	20	65	15

Wind in September

Winds average 4 km/h in September.

Across September, daily wind ranges from about 4 km/h on the calmest days to 5 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)	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	5	5	5	5	5	5	5	5	5	5	5	5
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	4	calm
2	4	calm
3	4	calm
4	4	calm
5	4	calm
6	4	calm
7	4	calm
8	4	calm
9	4	calm
10	4	calm
11	4	calm
12	4	calm
13	4	calm
14	4	calm
15	4	calm
16	4	calm
17	4	calm
18	4	calm
19	5	calm
20	5	calm
21	5	calm
22	5	calm
23	5	calm
24	5	calm
25	5	calm
26	5	calm
27	5	calm
28	5	calm
29	5	calm
30	5	calm

Sunrise & sunset in September

DaylightNight

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 7:03 AM to 7:15 AM, and sunset from 7:35 PM to 7:02 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	12.5	12.5	12.5	12.4	12.4	12.4	12.4	12.3	12.3	12.3	12.3	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	11.8	11.8	11.8
Sunrise (AM)	7:03	7:03	7:04	7:04	7:05	7:05	7:05	7:06	7:06	7:07	7:07	7:07	7:08	7:08	7:09	7:09	7:09	7:10	7:10	7:11	7:11	7:11	7:12	7:12	7:13	7:13	7:14	7:14	7:14	7:15
Sunset (PM)	7:35	7:34	7:33	7:31	7:30	7:29	7:28	7:27	7:26	7:25	7:24	7:22	7:21	7:20	7:19	7:18	7:17	7:16	7:14	7:13	7:12	7:11	7:10	7:09	7:08	7:07	7:05	7:04	7:03	7:02

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.5	7:03	7:35
2	12.5	7:03	7:34
3	12.5	7:04	7:33
4	12.5	7:04	7:31
5	12.4	7:05	7:30
6	12.4	7:05	7:29
7	12.4	7:05	7:28
8	12.4	7:06	7:27
9	12.3	7:06	7:26
10	12.3	7:07	7:25
11	12.3	7:07	7:24
12	12.3	7:07	7:22
13	12.2	7:08	7:21
14	12.2	7:08	7:20
15	12.2	7:09	7:19
16	12.1	7:09	7:18
17	12.1	7:09	7:17
18	12.1	7:10	7:16
19	12.1	7:10	7:14
20	12.0	7:11	7:13
21	12.0	7:11	7:12
22	12.0	7:11	7:11
23	12.0	7:12	7:10
24	11.9	7:12	7:09
25	11.9	7:13	7:08
26	11.9	7:13	7:07
27	11.9	7:14	7:05
28	11.8	7:14	7:04
29	11.8	7:14	7:03
30	11.8	7:15	7:02

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.15 kWh/m².

For context, solar energy here swings from a low near 3.69 kWh/m² to a high of 6.29 kWh/m² in April across the year — September's 4.15 kWh/m² falls in the middle.

	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)	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.2	4.2	4.2	4.2	4.2	4.2	4.1	4.1	4.1	4.1	4.1	4.0	4.0	4.0	4.0	4.0	4.0	4.0	4.0	4.0	4.0
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	Moderate	Moderate	Moderate	Moderate

	Solar energy (kWh/m²)	Level
1	4.3	Bright
2	4.3	Bright
3	4.3	Bright
4	4.3	Bright
5	4.3	Bright
6	4.3	Bright
7	4.3	Bright
8	4.3	Bright
9	4.3	Bright
10	4.2	Bright
11	4.2	Bright
12	4.2	Bright
13	4.2	Bright
14	4.2	Bright
15	4.2	Bright
16	4.1	Bright
17	4.1	Bright
18	4.1	Bright
19	4.1	Bright
20	4.1	Bright
21	4.0	Bright
22	4.0	Bright
23	4.0	Bright
24	4.0	Bright
25	4.0	Bright
26	4.0	Bright
27	4.0	Moderate
28	4.0	Moderate
29	4.0	Moderate
30	4.0	Moderate

Planning a trip in September

Hazard calendar for Dali

In seasonPeak

In September, Dali sits inside its pacific typhoon and monsoon season. The full year is below, with each hazard's peak months called out.

Dali sits in the Pacific typhoon belt; the season peaks July–October.

Dali's monsoon runs June–September, when most of the year's rain falls.

Pacific typhoon

Monsoon

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is September a good time to visit Dali?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

4.3

Sightseeing

10th-best month of the year

3.3

Beach & pool

7th-best month of the year

September is a reasonable time to visit Dali for sightseeing.

What to pack for Dali in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Dali sees daytime highs around 23°C and nights near 15°C. Pack rain gear. Worth having: light clothes. About 25 days see rain.

rain gearlight clothes

UV index in Dali in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Dali peaks around June 20 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 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	8	11	10	12	15	14	11	12	9	8	6
Level	High	Very high	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	Very high	High

	UV index (midday)	Level
Jan	6	High
Feb	8	Very high
Mar	11	Extreme
Apr	10	Extreme
May	12	Extreme
Jun	15	Extreme
Jul	14	Extreme
Aug	11	Extreme
Sep	12	Extreme
Oct	9	Very high
Nov	8	Very high
Dec	6	High

Air quality in Dali in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Dali is worst in April — around 23 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (June, 13 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Dali's WHO annual average of 17.6 µg/m³.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	19	19	22	23	18	13	13	14	16	17	19	19
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	PM2.5 (µg/m³)	Level
Jan	19	Moderate
Feb	19	Moderate
Mar	22	Moderate
Apr	23	Moderate
May	18	Moderate
Jun	13	Moderate
Jul	13	Moderate
Aug	14	Moderate
Sep	16	Moderate
Oct	17	Moderate
Nov	19	Moderate
Dec	19	Moderate

Location & terrain

Where is Dali?

Dali sits at 25.6°N, 100.2°E, 1,977 m above sea level, in China. The nearest listed city is Lijiang, 143 km away.

Topography around Dali

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Dali.

Within 3 km, the terrain around Dali has large variations in elevation — a maximum elevation change of 970 m around an average of 2,123 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 2,663 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,847 m.

The land around Dali is covered by trees (49%) and artificial surfaces (40%) within 3 km, trees (57%) within 16 km, and trees (58%) and grassland (20%) within 80 km.

3 km

970 m

trees 49%

16 km

2,663 m

trees 57%

80 km

2,847 m

trees 58%

treesgrasslandcroplandartificial surfacesbare terrainwater

← August Dali year-round climate October →Best places to visit in September

September weather nearby: Lijiang 143 km · Panglong 253 km · Shangri-La 254 km · Laukkai 256 km · Kunming 259 km · Myitkyina 284 km · Mu-se 293 km · Lakang 321 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 Dali (25.5847°, 100.2123°, elevation 1,977 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). 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).

	Avg high (°C)	Avg low (°C)
1	23	16
2	23	16
3	23	16
4	23	16
5	23	16
6	23	16
7	23	16
8	23	16
9	23	16
10	23	16
11	23	16
12	23	16
13	23	16
14	23	16
15	23	15
16	23	15
17	23	15
18	23	15
19	23	15
20	23	15
21	23	15
22	23	15
23	23	15
24	22	15
25	22	15
26	22	15
27	22	15
28	22	15
29	22	15
30	22	15

	Clearer (%)	Cloudier (%)
1	17	83
2	17	83
3	18	82
4	19	81
5	19	81
6	19	81
7	18	82
8	18	82
9	17	83
10	16	84
11	16	84
12	16	84
13	16	84
14	16	84
15	16	84
16	16	84
17	16	84
18	16	84
19	17	83
20	18	82
21	19	81
22	20	80
23	22	78
24	23	77
25	24	76
26	26	74
27	27	73
28	30	70
29	31	69
30	32	68

	Rain chance (%)
1	83
2	83
3	83
4	83
5	83
6	83
7	82
8	82
9	83
10	83
11	83
12	83
13	83
14	83
15	83
16	83
17	83
18	82
19	82
20	82
21	81
22	81
23	80
24	79
25	78
26	77
27	76
28	76
29	75
30	73

	Dry (%)	Comfortable (%)	Humid (%)
1	4	30	66
2	4	31	65
3	5	32	63
4	5	33	62
5	6	34	60
6	6	36	58
7	6	37	57
8	7	38	55
9	7	39	54
10	7	40	53
11	8	41	51
12	8	43	50
13	8	44	48
14	8	45	46
15	9	47	44
16	9	48	43
17	9	50	41
18	10	51	39
19	10	53	37
20	10	54	36
21	11	55	34
22	11	57	32
23	12	58	30
24	13	60	27
25	14	61	25
26	15	62	23
27	16	63	21
28	18	63	19
29	19	64	17
30	20	65	15

	Avg high (°C)	Avg low (°C)
1	23	16
2	23	16
3	23	16
4	23	16
5	23	16
6	23	16
7	23	16
8	23	16
9	23	16
10	23	16
11	23	16
12	23	16
13	23	16
14	23	16
15	23	15
16	23	15
17	23	15
18	23	15
19	23	15
20	23	15
21	23	15
22	23	15
23	23	15
24	22	15
25	22	15
26	22	15
27	22	15
28	22	15
29	22	15
30	22	15

	Clearer (%)	Cloudier (%)
1	17	83
2	17	83
3	18	82
4	19	81
5	19	81
6	19	81
7	18	82
8	18	82
9	17	83
10	16	84
11	16	84
12	16	84
13	16	84
14	16	84
15	16	84
16	16	84
17	16	84
18	16	84
19	17	83
20	18	82
21	19	81
22	20	80
23	22	78
24	23	77
25	24	76
26	26	74
27	27	73
28	30	70
29	31	69
30	32	68

	Rain chance (%)
1	83
2	83
3	83
4	83
5	83
6	83
7	82
8	82
9	83
10	83
11	83
12	83
13	83
14	83
15	83
16	83
17	83
18	82
19	82
20	82
21	81
22	81
23	80
24	79
25	78
26	77
27	76
28	76
29	75
30	73

	Dry (%)	Comfortable (%)	Humid (%)
1	4	30	66
2	4	31	65
3	5	32	63
4	5	33	62
5	6	34	60
6	6	36	58
7	6	37	57
8	7	38	55
9	7	39	54
10	7	40	53
11	8	41	51
12	8	43	50
13	8	44	48
14	8	45	46
15	9	47	44
16	9	48	43
17	9	50	41
18	10	51	39
19	10	53	37
20	10	54	36
21	11	55	34
22	11	57	32
23	12	58	30
24	13	60	27
25	14	61	25
26	15	62	23
27	16	63	21
28	18	63	19
29	19	64	17
30	20	65	15

	Avg high (°C)	Avg low (°C)
1	23	16
2	23	16
3	23	16
4	23	16
5	23	16
6	23	16
7	23	16
8	23	16
9	23	16
10	23	16
11	23	16
12	23	16
13	23	16
14	23	16
15	23	15
16	23	15
17	23	15
18	23	15
19	23	15
20	23	15
21	23	15
22	23	15
23	23	15
24	22	15
25	22	15
26	22	15
27	22	15
28	22	15
29	22	15
30	22	15

	Clearer (%)	Cloudier (%)
1	17	83
2	17	83
3	18	82
4	19	81
5	19	81
6	19	81
7	18	82
8	18	82
9	17	83
10	16	84
11	16	84
12	16	84
13	16	84
14	16	84
15	16	84
16	16	84
17	16	84
18	16	84
19	17	83
20	18	82
21	19	81
22	20	80
23	22	78
24	23	77
25	24	76
26	26	74
27	27	73
28	30	70
29	31	69
30	32	68

	Rain chance (%)
1	83
2	83
3	83
4	83
5	83
6	83
7	82
8	82
9	83
10	83
11	83
12	83
13	83
14	83
15	83
16	83
17	83
18	82
19	82
20	82
21	81
22	81
23	80
24	79
25	78
26	77
27	76
28	76
29	75
30	73

	Dry (%)	Comfortable (%)	Humid (%)
1	4	30	66
2	4	31	65
3	5	32	63
4	5	33	62
5	6	34	60
6	6	36	58
7	6	37	57
8	7	38	55
9	7	39	54
10	7	40	53
11	8	41	51
12	8	43	50
13	8	44	48
14	8	45	46
15	9	47	44
16	9	48	43
17	9	50	41
18	10	51	39
19	10	53	37
20	10	54	36
21	11	55	34
22	11	57	32
23	12	58	30
24	13	60	27
25	14	61	25
26	15	62	23
27	16	63	21
28	18	63	19
29	19	64	17
30	20	65	15