Kim Liên weather in September

In September, Kim Liên sees average daytime highs of 31°C and overnight lows near 25°C, with 298 mm of rain across 20.2 wet days and about 12.1 hours of daylight. It is the 5th-warmest and 1st-wettest month of the year here.

Highs ease over the month, from about 32°C in the first days to 30°C by the end. The sky is clear or mostly clear about 15% of the time in September, and the air most often feels miserable.

Daylight stretches from about 12 h 24 min at the start of September to 11 h 48 min by month's end. Set against the rest of the year, September is Kim Liên's 8th-clearest and 11th-windiest month. For the whole year in context, see Kim Liên's year-round climate.

Daytime high
31°
5th warmest
Overnight low
25°
8th coldest
Rainfall
298 mm
20.2 wet days
Daylight
12 h 06 min
5:50 AM – 5:56 PM
Cloud cover
76%
8th clearest
Wind
5 km/h
11th windiest
Solar energy
4.32 kWh/m²
Travel score
3.3
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 32°C in the first days to 30°C by the end.

A typical September day in Kim Liên reaches about 31°C in the afternoon and slips back to 25°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 34°C. Set against its neighbours, September runs about 2°C cooler than August and about 3°C warmer than October.

20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13225
23225
33225
43225
53225
63225
73225
83225
93125
103125
113125
123125
133125
143125
153125
163125
173125
183124
193124
203124
213124
223124
233124
243024
253024
263024
273024
283024
293024
303024

How September really feels in Kim Liên

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.

Days feeling ≥ 32°C
30
7 feel dangerously hot (≥ 39°C)
Days feeling ≤ C
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Kim Liên weather by month

How September compares with the rest of the year at a glance. September is the 5th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan21° / 15°347.9116.4
Feb23° / 16°296.211.47.0
Mar26° / 19°498.611.96.6
Apr30° / 22°7410.212.44.7
May33° / 25°13815.312.92.9
Jun35° / 27°11912.413.12.2
Jul34° / 27°17414.4132.4
Aug33° / 26°26620.612.62.6
Sep31° / 25°29820.212.13.3
Oct28° / 22°25517.111.64.9
Nov26° / 19°7710.411.16.5
Dec22° / 16°448.310.96.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 12% of September, with mostly cloudy or overcast conditions the remaining 73%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11783
21783
31783
41882
51882
61882
72080
82080
92080
102278
112278
122377
132476
142575
152575
162773
172773
182971
193070
203169
213268
223367
233367
243565
253565
263664
273664
283763
293862
304060

Chance of precipitation in September

Any precipitation

Kim Liên gets around 298 mm of rain over 20.2 wet days in September, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 68% and peaks near 72% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
172
272
372
472
572
672
771
871
971
1070
1170
1270
1369
1469
1569
1668
1768
1867
1966
2066
2165
2264
2364
2463
2563
2663
2763
2863
2963
3063

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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 69% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1001090
2001189
3001189
4011287
5011386
6011485
7011584
8021682
9021781
10021880
11021979
12032077
13132175
14142372
15142471
16142570
17152767
18152866
19162964
20163162
21163360
22173458
23173656
24183853
25183952
26194149
271104247
281104345
291114543
301124541

Wind in September

Winds average 5 km/h in September.

Across September, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 24 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 36 minutes over September. Sunrise moves from 5:47 AM to 5:53 AM, and sunset from 6:10 PM to 5:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:476:10
212.45:476:09
312.35:486:08
412.35:486:07
512.35:486:06
612.35:486:05
712.35:486:04
812.35:486:04
912.25:496:03
1012.25:496:02
1112.25:496:01
1212.25:496:00
1312.25:495:59
1412.15:505:58
1512.15:505:57
1612.15:505:56
1712.15:505:55
1812.15:505:54
1912.15:505:53
2012.05:515:53
2112.05:515:52
2212.05:515:51
2312.05:515:50
2412.05:515:49
2511.95:525:48
2611.95:525:47
2711.95:525:46
2811.95:525:45
2911.95:525:44
3011.85:535:43

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.32 kWh/m².

For context, solar energy here swings from a low near 2.47 kWh/m² to a high of 5.55 kWh/m² in June across the year — September's 4.32 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.5Bright
44.5Bright
54.5Bright
64.5Bright
74.4Bright
84.4Bright
94.4Bright
104.4Bright
114.3Bright
124.3Bright
134.3Bright
144.3Bright
154.3Bright
164.3Bright
174.3Bright
184.3Bright
194.2Bright
204.2Bright
214.2Bright
224.2Bright
234.2Bright
244.2Bright
254.2Bright
264.1Bright
274.1Bright
284.1Bright
294.1Bright
304.0Bright
Planning a trip in September

Hazard calendar for Kim Liên

In seasonPeak

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

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

Kim Liên's monsoon runs May–May, 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 Kim Liên?

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

3.3
Sightseeing
8th-best month of the year
4.8
Beach & pool
8th-best month of the year

September is a weaker month for outdoor sightseeing in Kim Liên.

What to pack for Kim Liên in September

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

In September, Kim Liên sees daytime highs around 31°C and nights near 25°C. Pack light clothes and rain gear. About 20 days see rain.

light clothesrain gear

Sea temperature near Kim Liên in September

The nearest coast averages about 30°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 32 km away) is warmest in August at about 30°C and coldest in February near 21°C.

The water stays above 20°C all year — warm enough for a swim any month.

20°25°30°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan21Refreshing
Feb21Refreshing
Mar22Refreshing
Apr24Warm
May28Warm
Jun30Tropical
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct28Warm
Nov26Warm
Dec23Refreshing

UV index in Kim Liên in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Kim Liên peaks around August 13 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 6 (high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highVery highExtremeVery highHighAug 13UV 13Dec 16UV 6
UV index (midday)Level
Jan7Very high
Feb9Very high
Mar11Extreme
Apr9Very high
May10Extreme
Jun13Extreme
Jul12Extreme
Aug13Extreme
Sep11Extreme
Oct10Very high
Nov7Very high
Dec6High

Air quality in Kim Liên 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 Kim Liên is worst in April — around 81 µg/m³ PM2.5 (unhealthy), about 5.3× the cleanest month (July, 15 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

020406080JanFebMarAprMayJunJulAugSepOctNovDecPoorUnhealthyModeratePoorApr 1278 µg/m³Jul 2215 µg/m³
PM2.5 (µg/m³)Level
Jan39Poor
Feb44Poor
Mar66Unhealthy
Apr81Unhealthy
May31Moderate
Jun21Moderate
Jul15Moderate
Aug16Moderate
Sep22Moderate
Oct30Moderate
Nov34Moderate
Dec39Poor
Location & terrain

Where is Kim Liên?

Kim Liên sits at 18.9°N, 105.3°E, 19 m above sea level, in Vietnam. The nearest listed city is Diễn Thành, 32 km away.

Topography around Kim Liên

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

Within 3 km, the terrain around Kim Liên has only modest variations in elevation — a maximum elevation change of 139 m around an average of 18 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 532 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,232 m.

The land around Kim Liên is covered by cropland (55%) and trees (20%) within 3 km, trees (60%) and cropland (31%) within 16 km, and trees (70%) within 80 km.

3 km
139 m
16 km
532 m
80 km
2,232 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Diễn Thành 32 km · Thái Hòa 36 km · Yên Vinh 44 km · Vinh 46 km · Bến Thủy 48 km · Nghi Xuân 52 km · Hồng Lĩnh 57 km · Hoàng Mai 60 km

Vietnam travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B / C / F
220 V · 50 Hz
Prices
≈ 29% of US
price level, 2025
GDP per capita
$5,066
2025
Happiness
6.4 / 10
World Happiness, 2025
Safe drinking water
59%
of population, 2024
Homicide rate
1.5
per 100k, 2011
Road deaths
30.6
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Moderate
EF EPI 500
Religion
none 86%Catholic 6%Buddhist 6%Protestant 1%

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 Kim Liên (18.8833°, 105.3167°, elevation 19 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).