Cẩm Phả Mines weather in September

In September, Cẩm Phả Mines sees average daytime highs of 29°C and overnight lows near 26°C, with 296 mm of rain across 19.9 wet days and about 12.1 hours of daylight. It is the 4th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 29% 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 Cẩm Phả Mines's 4th-clearest and 10th-windiest month. For the whole year in context, see Cẩm Phả Mines's year-round climate.

Daytime high
29°
4th warmest
Overnight low
26°
9th coldest
Rainfall
296 mm
19.9 wet days
Daylight
12 h 06 min
5:42 AM – 5:49 PM
Cloud cover
65%
4th clearest
Wind
12 km/h
10th windiest
Solar energy
4.63 kWh/m²
Travel score
4.2
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical September day in Cẩm Phả Mines reaches about 29°C in the afternoon and slips back to 26°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 31°C. Set against its neighbours, September runs on par with August and about 2°C warmer than October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12926
22926
32926
42926
52926
62926
72926
82926
92926
102926
112926
122926
132926
142926
152926
162926
172926
182926
192926
202926
212926
222926
232926
242925
252925
262925
272925
282825
292825
302825

How September really feels in Cẩm Phả Mines

Once humidity and wind are folded in, September averages 27 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
27
heat index over the day's high
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.

Cẩm Phả Mines weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan18° / 15°6111.410.95.5
Feb19° / 16°4410.511.35.6
Mar21° / 19°6412.111.95.9
Apr24° / 22°6510.312.56.5
May28° / 25°20017.5135.0
Jun30° / 27°28821.413.33.5
Jul30° / 27°37323.413.13.4
Aug30° / 27°43124.512.73.4
Sep29° / 26°29619.912.14.2
Oct27° / 24°12611.911.56.4
Nov24° / 21°598.9117.2
Dec20° / 17°487.710.76.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 29% 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 58%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13070
23070
33070
43070
53268
63268
73268
83268
93367
103565
113466
123664
133763
143961
153961
164258
174357
184456
194654
204753
214852
225050
235149
245248
255347
265446
275545
285644
295743
305842

Chance of precipitation in September

Any precipitation

Cẩm Phả Mines gets around 296 mm of rain over 19.9 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 66% and peaks near 81% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
181
281
381
480
580
679
778
877
976
1075
1173
1272
1370
1468
1567
1665
1763
1862
1960
2059
2158
2257
2355
2454
2553
2652
2751
2850
2950
3049

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 64% of days. Sticky, muggy-or-worse air turns up on roughly 98% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
10011188
20011287
30011287
40111385
50121483
60121483
70121582
80131680
90131680
100241777
110251875
120251974
130262072
140272170
150282268
160282367
170292564
1802102761
1902112859
2002123056
2102123254
2202133451
2302143548
2402153746
2502153943
2603164041
2703174238
2813174336
2914184433
3014194531

Wind in September

Winds average 12 km/h in September.

Across September, daily wind ranges from about 11 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
712calm
812calm
912calm
1012calm
1112calm
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze

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 5:38 AM to 5:45 AM, and sunset from 6:03 PM to 5:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:386:03
212.45:386:02
312.45:386:01
412.45:396:00
512.35:395:59
612.35:395:58
712.35:395:58
812.35:405:57
912.35:405:56
1012.25:405:55
1112.25:405:54
1212.25:415:53
1312.25:415:52
1412.25:415:51
1512.15:415:50
1612.15:425:49
1712.15:425:48
1812.15:425:47
1912.15:425:46
2012.05:435:45
2112.05:435:44
2212.05:435:43
2312.05:435:42
2412.05:445:41
2511.95:445:40
2611.95:445:39
2711.95:445:38
2811.95:455:37
2911.95:455:36
3011.85:455:35

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.63 kWh/m².

For context, solar energy here swings from a low near 2.72 kWh/m² to a high of 5.16 kWh/m² in May across the year — September's 4.63 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.6Bright
54.5Bright
64.5Bright
74.5Bright
84.5Bright
94.6Bright
104.6Bright
114.6Bright
124.6Bright
134.6Bright
144.6Bright
154.7Bright
164.7Bright
174.7Bright
184.7Bright
194.7Bright
204.7Bright
214.7Bright
224.7Bright
234.7Bright
244.7Bright
254.7Bright
264.7Bright
274.7Bright
284.7Bright
294.7Bright
304.7Bright
Planning a trip in September

Hazard calendar for Cẩm Phả Mines

In seasonPeak

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

Cẩm Phả Mines sits in the Pacific typhoon belt; the season peaks July–October.

Cẩm Phả Mines'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 Cẩm Phả Mines?

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

4.2
Sightseeing
9th-best month of the year
5.4
Beach & pool
5th-best month of the year

September is a reasonable time to visit Cẩm Phả Mines for sightseeing.

What to pack for Cẩm Phả Mines in September

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

In September, Cẩm Phả Mines sees daytime highs around 29°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection. About 20 days see rain.

light clothesrain gearsun protection

Sea temperature near Cẩm Phả Mines in September

The nearest coast averages about 29°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 18 km away) is warmest in August at about 30°C and coldest in February near 19°C.

It's comfortable for a long swim from Mar 13 to Jan 10 — about 10 months when the water holds above 20°C.

20°25°30°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan20Cool
Feb19Cool
Mar20Refreshing
Apr23Refreshing
May27Warm
Jun29Tropical
Jul29Tropical
Aug30Tropical
Sep29Tropical
Oct28Warm
Nov25Warm
Dec22Refreshing

UV index in Cẩm Phả Mines in September

LowModerateHighVery highExtreme

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 Cẩm Phả Mines peaks around July 11 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 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 highHighJul 11UV 12Dec 17UV 6
UV index (midday)Level
Jan7High
Feb8Very high
Mar9Very high
Apr8Very high
May10Extreme
Jun12Extreme
Jul13Extreme
Aug8Very high
Sep9Very high
Oct9Very high
Nov7High
Dec6High

Air quality in Cẩm Phả Mines 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 Cẩm Phả Mines is worst in January — around 42 µg/m³ PM2.5 (poor), about 2.6× the cleanest month (July, 16 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModeratePoorJan 2342 µg/m³Jul 1716 µg/m³
PM2.5 (µg/m³)Level
Jan42Poor
Feb42Poor
Mar41Poor
Apr40Poor
May26Moderate
Jun19Moderate
Jul16Moderate
Aug18Moderate
Sep21Moderate
Oct27Moderate
Nov29Moderate
Dec39Poor
Location & terrain

Where is Cẩm Phả Mines?

Cẩm Phả Mines sits at 21.0°N, 107.3°E, 209 m above sea level, in Vietnam. The nearest listed city is Cẩm Phả, 3.0 km away.

Topography around Cẩm Phả Mines

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

Within 3 km, the terrain around Cẩm Phả Mines has significant variations in elevation — a maximum elevation change of 547 m around an average of 91 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,012 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,582 m.

The land around Cẩm Phả Mines is covered by bare terrain (36%), artificial surfaces (26%) and trees (23%) within 3 km, trees (44%) and water (42%) within 16 km, and water (50%) and trees (41%) within 80 km.

3 km
547 m
16 km
1,012 m
80 km
1,582 m
treesgrasslandcroplandartificial surfacesbare terrainwatermangroves
September weather nearby: Cẩm Phả 3.0 km · Ha Long 25 km · Thị Trấn Ba Chẽ 28 km · Thị Trấn Tiên Yên 37 km · Cát Bà 41 km · Thị Trấn Đầm Hà 48 km · Thành Phố Uông Bí 55 km · Đố Sơn 63 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 Cẩm Phả Mines (21.0167°, 107.3°, elevation 209 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).