Thị Trấn Đông Triều weather in September

In September, Thị Trấn Đông Triều sees average daytime highs of 31°C and overnight lows near 25°C, with 236 mm of rain across 20.2 wet days and about 12.1 hours of daylight. It is the 4th-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 20% 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 Thị Trấn Đông Triều's 4th-clearest and 11th-windiest month. For the whole year in context, see Thị Trấn Đông Triều's year-round climate.

Daytime high
31°
4th warmest
Overnight low
25°
8th coldest
Rainfall
236 mm
20.2 wet days
Daylight
12 h 06 min
5:45 AM – 5:52 PM
Cloud cover
71%
4th clearest
Wind
7 km/h
11th windiest
Solar energy
4.4 kWh/m²
Travel score
3.3
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 31°C through the month.

A typical September day in Thị Trấn Đông Triều 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 28°C and 34°C. Set against its neighbours, September runs about 1°C cooler than August and about 2°C warmer than October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13226
23226
33226
43226
53226
63226
73126
83126
93126
103126
113125
123125
133125
143125
153125
163125
173125
183125
193125
203125
213125
223125
233125
243125
253125
263124
273124
283124
293124
303124

How September really feels in Thị Trấn Đông Triều

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
6 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.

Thị Trấn Đông Triều weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan20° / 14°326.510.96.4
Feb21° / 16°206.311.36.5
Mar24° / 19°459.411.96.5
Apr28° / 22°7511.512.55.5
May31° / 25°24119.2133.4
Jun33° / 27°24220.713.32.5
Jul33° / 27°26922.913.22.5
Aug32° / 26°35425.612.72.5
Sep31° / 25°23620.212.13.3
Oct29° / 23°10812.411.55.3
Nov26° / 19°557.4117.0
Dec22° / 16°315.910.77.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 20% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 13% of September, with mostly cloudy or overcast conditions the remaining 67%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12377
22377
32476
42476
52377
62377
72476
82476
92674
102674
112674
122872
132872
143070
153268
163367
173466
183664
193664
203862
213961
224060
234159
244357
254357
264555
274555
284753
294753
304852

Chance of precipitation in September

Any precipitation

Thị Trấn Đông Triều gets around 236 mm of rain over 20.2 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 67% and peaks near 84% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
184
284
383
483
583
682
781
879
978
1077
1175
1273
1371
1469
1568
1666
1764
1862
1960
2059
2157
2256
2355
2454
2554
2653
2752
2852
2951
3051

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 72% of days. Sticky, muggy-or-worse air turns up on roughly 98% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
100694
200793
301792
401891
511890
611989
7121087
8121087
9121186
10131284
11131383
12141481
13141580
14251677
15261775
16261874
17272071
18282169
19292267
202102464
212102563
222112760
232122858
242122957
253133054
263133153
273143251
284143348
295153446
305153544

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

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 5:41 AM to 5:48 AM, and sunset from 6:06 PM to 5:38 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:416:06
212.45:416:05
312.45:416:05
412.45:426:04
512.35:426:03
612.35:426:02
712.35:426:01
812.35:436:00
912.35:435:59
1012.25:435:58
1112.25:435:57
1212.25:445:56
1312.25:445:55
1412.25:445:54
1512.15:445:53
1612.15:455:52
1712.15:455:51
1812.15:455:50
1912.15:455:49
2012.05:465:48
2112.05:465:47
2212.05:465:46
2312.05:465:45
2412.05:475:44
2511.95:475:43
2611.95:475:42
2711.95:485:41
2811.95:485:40
2911.85:485:39
3011.85:485:38

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.4 kWh/m².

For context, solar energy here swings from a low near 2.31 kWh/m² to a high of 4.98 kWh/m² in June across the year — September's 4.4 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.4Bright
24.4Bright
34.4Bright
44.3Bright
54.3Bright
64.3Bright
74.3Bright
84.3Bright
94.3Bright
104.4Bright
114.4Bright
124.4Bright
134.4Bright
144.4Bright
154.4Bright
164.4Bright
174.5Bright
184.5Bright
194.5Bright
204.5Bright
214.5Bright
224.5Bright
234.5Bright
244.5Bright
254.5Bright
264.5Bright
274.5Bright
284.5Bright
294.5Bright
304.5Bright
Planning a trip in September

Hazard calendar for Thị Trấn Đông Triều

In seasonPeak

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

Thị Trấn Đông Triều sits in the Pacific typhoon belt; the season peaks July–October.

Thị Trấn Đông Triều's monsoon runs May–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 Thị Trấn Đông Triều?

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

3.3
Sightseeing
9th-best month of the year
4.9
Beach & pool
6th-best month of the year

September is a weaker month for outdoor sightseeing in Thị Trấn Đông Triều.

What to pack for Thị Trấn Đông Triều in September

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

In September, Thị Trấn Đông Triều 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 Thị Trấn Đông Triều 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 52 km away) is warmest in August at about 30°C and coldest in February near 20°C.

It's comfortable for a long swim from Feb 24 to Feb 2 — about 11.3 months when the water holds above 20°C.

20°25°30°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan20Refreshing
Feb20Cool
Mar21Refreshing
Apr23Refreshing
May27Warm
Jun29Tropical
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct28Tropical
Nov26Warm
Dec23Refreshing

UV index in Thị Trấn Đông Triều in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Thị Trấn Đông Triều peaks around June 21 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeVery highHighJun 21UV 11Dec 15UV 6
UV index (midday)Level
Jan7High
Feb7Very high
Mar8Very high
Apr7High
May9Very high
Jun12Extreme
Jul11Extreme
Aug8Very high
Sep8Very high
Oct8Very high
Nov6High
Dec6High

Air quality in Thị Trấn Đông Triều 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 Thị Trấn Đông Triều is worst in December — around 92 µg/m³ PM2.5 (unhealthy), about 2.6× the cleanest month (July, 35 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorUnhealthyDec 2192 µg/m³Jul 1335 µg/m³
PM2.5 (µg/m³)Level
Jan90Unhealthy
Feb80Unhealthy
Mar76Unhealthy
Apr66Unhealthy
May49Poor
Jun37Poor
Jul35Moderate
Aug40Poor
Sep59Unhealthy
Oct74Unhealthy
Nov82Unhealthy
Dec92Unhealthy
Location & terrain

Where is Thị Trấn Đông Triều?

Thị Trấn Đông Triều sits at 21.1°N, 106.5°E, 5 m above sea level, in Vietnam. The nearest listed city is Thị Trấn Mạo Khê, 9.0 km away.

Topography around Thị Trấn Đông Triều

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Thị Trấn Đông Triều.

Within 3 km, the terrain around Thị Trấn Đông Triều has only modest variations in elevation — a maximum elevation change of 102 m around an average of 6 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 923 m; within 80 km, large variations in elevation — a maximum elevation change of 1,144 m.

The land around Thị Trấn Đông Triều is covered by cropland (48%) and trees (20%) within 3 km, trees (48%) and cropland (30%) within 16 km, and trees (47%) and cropland (26%) within 80 km.

3 km
102 m
16 km
923 m
80 km
1,144 m
treesgrasslandcroplandartificial surfacesbare terrainwatermangroves
September weather nearby: Thị Trấn Mạo Khê 9.0 km · Chí Linh 21 km · Hải Dương 24 km · Thành Phố Uông Bí 27 km · Haiphong 30 km · Chũ 33 km · Kiến An 33 km · Cung Kiệm 38 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 Thị Trấn Đông Triều (21.0824°, 106.5138°, elevation 5 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).