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September

Ha Long Weather in September with Sea Temperature

September weather in Ha Long includes average daytime air +31°C, nighttime +24°C, average sea temperature +30°C. Daily water temperatures usually range from +29°C to +30°C, which is comfortable for swimming and beach planning. The tables below also show air temperature, wind, rain and humidity; for near-term water data, open the current 30-day water temperature forecast.

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Averaged values across several years

Daily air temperature for the month

Day Night

Daily sea water temperature for the month

Water

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September	Day	Night	Sea t°	Wind	Precip	Humidity
1Mon	+32°C	+25°C	+30°C	2 m/s	4.2 mm	80%
2Tue	+32°C	+25°C	+30°C	2 m/s	0.9 mm	80%
3Wed	+32°C	+25°C	+30°C	2 m/s	1.7 mm	80%
4Thu	+32°C	+25°C	+30°C	2 m/s	0.4 mm	80%
5Fri	+33°C	+25°C	+30°C	2 m/s	1.1 mm	79%
6Sat	+33°C	+25°C	+30°C	2 m/s	0.6 mm	77%
7Sun	+32°C	+25°C	+30°C	3 m/s	7.1 mm	80%
8Mon	+31°C	+25°C	+30°C	2 m/s	3.5 mm	85%
9Tue	+28°C	+25°C	+30°C	2 m/s	4.8 mm	92%
10Wed	+29°C	+24°C	+30°C	1 m/s	10.3 mm	89%
11Thu	+31°C	+25°C	+30°C	2 m/s	4 mm	85%
12Fri	+31°C	+25°C	+30°C	1 m/s	1.7 mm	85%
13Sat	+31°C	+24°C	+30°C	1 m/s	0.4 mm	84%
14Sun	+31°C	+25°C	+29°C	1 m/s	0.9 mm	82%
15Mon	+31°C	+25°C	+29°C	1 m/s	0.9 mm	83%
16Tue	+31°C	+25°C	+29°C	1 m/s	1.3 mm	83%
17Wed	+30°C	+25°C	+30°C	1 m/s	2.2 mm	86%
18Thu	+31°C	+24°C	+30°C	2 m/s	1 mm	83%
19Fri	+31°C	+24°C	+30°C	2 m/s	1.1 mm	84%
20Sat	+31°C	+24°C	+30°C	1 m/s	1.8 mm	84%
21Sun	+31°C	+24°C	+29°C	2 m/s	2.6 mm	83%
22Mon	+29°C	+24°C	+29°C	2 m/s	1.7 mm	83%
23Tue	+30°C	+23°C	+29°C	2 m/s	1.5 mm	78%
24Wed	+30°C	+23°C	+29°C	2 m/s	1.7 mm	79%
25Thu	+29°C	+23°C	+29°C	2 m/s	2.2 mm	82%
26Fri	+30°C	+23°C	+29°C	2 m/s	0.9 mm	82%
27Sat	+31°C	+24°C	+29°C	2 m/s	1.5 mm	81%
28Sun	+30°C	+24°C	+29°C	2 m/s	1.3 mm	82%
29Mon	+30°C	+24°C	+29°C	3 m/s	2.3 mm	83%
30Tue	+30°C	+24°C	+29°C	2 m/s	1.6 mm	83%

Sea water temperature by months

Water +30°C

Day and night air temperature

Day +31°C Night +24°C

Weather highs and lows in Ha Long for september

Warmest day: 6 september, +33°C
Coldest night: 25 september, +23°C
Max precipitation: 10 september, 10.3 mm
Warmest sea water: 1 september, +30°C
Coldest sea water: 14 september, +29°C

Climate in Ha Long in september

Average daytime temperature: +31°C
Average nighttime temperature: +24°C
Sea water temperature: —
Precipitation (monthly average): 67.3 mm
Days with precipitation: 12.3
Humidity: 83%
Wind: 2 m/s
Data: 7 years / coverage 100%

Daily air temperature for the month

Day Night

Daily sea water temperature for the month

Water

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September	Day	Night	Sea t°	Wind	Precip	Humidity
1Mon	+31°C	+24°C	+30°C	2-3 m/s, ESE	1.3 mm	84%
2Tue	+29°C	+25°C	+30°C	1-2 m/s, SSE	1.9 mm	89%
3Wed	+32°C	+25°C	+30°C	1-3 m/s, S	0 mm	83%
4Thu	+32°C	+25°C	+30°C	1-3 m/s, S	0 mm	82%
5Fri	+33°C	+25°C	+30°C	2-3 m/s, SSE	0 mm	81%
6Sat	+32°C	+25°C	+30°C	1-2 m/s, SE	0.3 mm	83%
7Sun	+34°C	+25°C	+30°C	1-2 m/s, S	0 mm	76%
8Mon	+35°C	+25°C	+30°C	2-3 m/s, W	0 mm	78%
9Tue	+26°C	+24°C	+30°C	1-2 m/s, NE	4.5 mm	95%
10Wed	+29°C	+24°C	+30°C	1-2 m/s, ESE	6.7 mm	90%
11Thu	+31°C	+25°C	+30°C	2-3 m/s, SSE	2.1 mm	84%
12Fri	+31°C	+25°C	+30°C	2-4 m/s, SSE	0.7 mm	84%
13Sat	+31°C	+24°C	+30°C	2-3 m/s, SE	0.1 mm	83%
14Sun	+30°C	+24°C	+29°C	1-2 m/s, ESE	0.2 mm	86%
15Mon	+31°C	+24°C	+29°C	2-3 m/s, SSE	0.7 mm	85%
16Tue	+32°C	+24°C	+29°C	2-3 m/s, SE	0.1 mm	79%
17Wed	+29°C	+24°C	+30°C	2-3 m/s, ENE	0.9 mm	85%
18Thu	+30°C	+24°C	+30°C	2-3 m/s, ESE	0.6 mm	85%
19Fri	+32°C	+24°C	+30°C	2-3 m/s, SE	0.2 mm	80%
20Sat	+34°C	+25°C	+30°C	1-2 m/s, SSW	0 mm	78%
21Sun	+31°C	+25°C	+29°C	1-2 m/s, ESE	1.8 mm	84%
22Mon	+30°C	+24°C	+29°C	2 m/s, E	2.3 mm	87%
23Tue	+30°C	+24°C	+29°C	1-2 m/s, NNW	1.5 mm	86%
24Wed	+33°C	+24°C	+29°C	4-6 m/s, NNW	0 mm	73%
25Thu	+27°C	+22°C	+29°C	5-6 m/s, WNW	13.9 mm	90%
26Fri	+27°C	+22°C	+29°C	2 m/s, ENE	2.2 mm	94%
27Sat	+29°C	+24°C	+29°C	2 m/s, NE	1.5 mm	89%
28Sun	+31°C	+24°C	+29°C	3-5 m/s, ENE	0.5 mm	83%
29Mon	+25°C	+23°C	+29°C	6-7 m/s, ESE	12.1 mm	95%
30Tue	+26°C	+23°C	+29°C	2-3 m/s, ESE	4.3 mm	95%

Weather highs and lows in Ha Long for september

Warmest day: 8 september, +35°C
Coldest night: 25 september, +22°C
Max precipitation: 25 september, 13.9 mm
Warmest water: 1 september, +30°C
Coldest water: 14 september, +29°C

Climate in Ha Long in september

Year: 2025
Average daytime temperature: +30°C
Average nighttime temperature: +24°C
Water temperature: +30°C
Precipitation (month): 60.4 mm
Days with precipitation: 13
Humidity: 85%
Wind: 2 m/s

Daily air temperature for the month

Day Night

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September	Day	Night	Sea t°	Wind	Precip	Humidity
1Sun	+32°C	+25°C	—	2 m/s, ESE	2.7 mm	81%
2Mon	+33°C	+26°C	—	1-2 m/s, SSE	0.2 mm	85%
3Tue	+34°C	+26°C	—	1-2 m/s, S	2.9 mm	80%
4Wed	+35°C	+26°C	—	1-2 m/s, SSW	0 mm	77%
5Thu	+37°C	+26°C	—	1-2 m/s, NNW	0 mm	76%
6Fri	+36°C	+26°C	—	3-4 m/s, NNW	0.1 mm	72%
7Sat	+28°C	+23°C	—	12-15 m/s, WNW	39.2 mm	88%
8Sun	+28°C	+25°C	—	5-8 m/s, SSE	13.8 mm	94%
9Mon	+26°C	+25°C	—	3-4 m/s, E	8.9 mm	95%
10Tue	+25°C	+23°C	—	1-2 m/s, E	52.7 mm	97%
11Wed	+24°C	+24°C	—	2-3 m/s, ENE	18.3 mm	98%
12Thu	+31°C	+23°C	—	1 m/s, N	3.3 mm	86%
13Fri	+32°C	+24°C	—	1-2 m/s, ESE	0.2 mm	81%
14Sat	+31°C	+25°C	—	1 m/s, S	0.7 mm	85%
15Sun	+31°C	+25°C	—	1 m/s, S	0 mm	87%
16Mon	+32°C	+24°C	—	1 m/s, SSE	0.8 mm	82%
17Tue	+31°C	+24°C	—	2-3 m/s, ENE	1.7 mm	87%
18Wed	+32°C	+25°C	—	1-2 m/s, NE	1.9 mm	86%
19Thu	+31°C	+24°C	—	2-3 m/s, E	2.4 mm	83%
20Fri	+31°C	+24°C	—	1-3 m/s, ENE	0 mm	83%
21Sat	+31°C	+25°C	—	1 m/s, NE	8.1 mm	89%
22Sun	+26°C	+24°C	—	4-5 m/s, NNE	6.5 mm	87%
23Mon	+28°C	+22°C	—	3-4 m/s, N	0 mm	68%
24Tue	+23°C	+21°C	—	1 m/s, W	0 mm	92%
25Wed	+26°C	+23°C	—	1 m/s, N	0 mm	85%
26Thu	+30°C	+22°C	—	1-2 m/s, S	0.2 mm	83%
27Fri	+30°C	+24°C	—	1-3 m/s, S	0 mm	85%
28Sat	+29°C	+25°C	—	2-3 m/s, S	0 mm	90%
29Sun	+30°C	+26°C	—	3-4 m/s, SSE	0.2 mm	88%
30Mon	+29°C	+25°C	—	2-3 m/s, SE	0.9 mm	89%

Weather highs and lows in Ha Long for september

Warmest day: 5 september, +37°C
Coldest night: 24 september, +21°C
Max precipitation: 10 september, 52.7 mm
Warmest water: —
Coldest water: —

Climate in Ha Long in september

Year: 2024
Average daytime temperature: +30°C
Average nighttime temperature: +24°C
Water temperature: —
Precipitation (month): 165.7 mm
Days with precipitation: 13
Humidity: 85%
Wind: 2 m/s

Daily air temperature for the month

Day Night

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September	Day	Night	Sea t°	Wind	Precip	Humidity
1Fri	+33°C	+24°C	—	2-3 m/s, N	0 mm	65%
2Sat	+34°C	+25°C	—	3-4 m/s, N	0 mm	65%
3Sun	+27°C	+22°C	—	4-5 m/s, N	0 mm	75%
4Mon	+29°C	+22°C	—	2-3 m/s, NNW	0.3 mm	85%
5Tue	+32°C	+24°C	—	1 m/s, E	0.8 mm	83%
6Wed	+35°C	+25°C	—	2-3 m/s, SE	0.1 mm	77%
7Thu	+35°C	+26°C	—	1-2 m/s, S	0 mm	77%
8Fri	+35°C	+26°C	—	1-2 m/s, SE	1.2 mm	79%
9Sat	+31°C	+25°C	—	1-2 m/s, NNE	10.7 mm	85%
10Sun	+28°C	+25°C	—	1-2 m/s, ESE	1 mm	93%
11Mon	+31°C	+25°C	—	2 m/s, SE	1.4 mm	87%
12Tue	+27°C	+25°C	—	1 m/s, SW	1.5 mm	94%
13Wed	+27°C	+23°C	—	1-2 m/s, WSW	1 mm	96%
14Thu	+27°C	+23°C	—	2-3 m/s, N	0.1 mm	87%
15Fri	+28°C	+22°C	—	2 m/s, SSW	0.2 mm	87%
16Sat	+28°C	+23°C	—	1-2 m/s, SW	4.4 mm	93%
17Sun	+29°C	+24°C	—	1-2 m/s, ENE	2.4 mm	93%
18Mon	+30°C	+24°C	—	2-3 m/s, SSE	0.4 mm	86%
19Tue	+30°C	+25°C	—	2-3 m/s, SSE	1.3 mm	85%
20Wed	+31°C	+25°C	—	2-4 m/s, SSE	0.3 mm	85%
21Thu	+31°C	+25°C	—	2-3 m/s, SSE	0 mm	86%
22Fri	+32°C	+25°C	—	1-3 m/s, SSE	0.1 mm	84%
23Sat	+32°C	+24°C	—	2-3 m/s, SE	0.1 mm	82%
24Sun	+32°C	+24°C	—	2-3 m/s, E	5.6 mm	79%
25Mon	+32°C	+24°C	—	2-3 m/s, E	0 mm	81%
26Tue	+29°C	+24°C	—	3-4 m/s, ENE	1.4 mm	86%
27Wed	+30°C	+23°C	—	3-4 m/s, ENE	5.1 mm	88%
28Thu	+30°C	+23°C	—	2-3 m/s, E	4.3 mm	86%
29Fri	+28°C	+24°C	—	1 m/s, SSW	0.4 mm	92%
30Sat	+32°C	+24°C	—	2-3 m/s, SE	0 mm	82%

Weather highs and lows in Ha Long for september

Warmest day: 6 september, +35°C
Coldest night: 3 september, +22°C
Max precipitation: 9 september, 10.7 mm
Warmest water: —
Coldest water: —

Climate in Ha Long in september

Year: 2023
Average daytime temperature: +31°C
Average nighttime temperature: +24°C
Water temperature: —
Precipitation (month): 44.1 mm
Days with precipitation: 12
Humidity: 84%
Wind: 2 m/s

Daily air temperature for the month

Day Night

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September	Day	Night	Sea t°	Wind	Precip	Humidity
1Thu	+31°C	+25°C	—	1-2 m/s, ESE	11.7 mm	86%
2Fri	+32°C	+25°C	—	1 m/s, ESE	0.2 mm	83%
3Sat	+33°C	+25°C	—	1 m/s, SSW	1.8 mm	81%
4Sun	+33°C	+25°C	—	2-3 m/s, NNE	0.1 mm	73%
5Mon	+34°C	+24°C	—	2 m/s, N	0 mm	65%
6Tue	+35°C	+24°C	—	1 m/s, ENE	0 mm	63%
7Wed	+33°C	+25°C	—	2-3 m/s, E	0 mm	68%
8Thu	+28°C	+24°C	—	3 m/s, ENE	7.4 mm	87%
9Fri	+26°C	+23°C	—	1-2 m/s, NNE	2 mm	97%
10Sat	+29°C	+23°C	—	1-2 m/s, SSW	0.3 mm	88%
11Sun	+32°C	+23°C	—	1-2 m/s, S	0.1 mm	81%
12Mon	+28°C	+24°C	—	1 m/s, NNW	0.2 mm	91%
13Tue	+30°C	+24°C	—	1-2 m/s, N	0 mm	90%
14Wed	+31°C	+24°C	—	1-2 m/s, S	0 mm	80%
15Thu	+33°C	+25°C	—	1-3 m/s, S	0 mm	77%
16Fri	+30°C	+25°C	—	2-3 m/s, SSE	0.1 mm	83%
17Sat	+30°C	+24°C	—	1 m/s, SE	3.1 mm	88%
18Sun	+33°C	+24°C	—	1-2 m/s, S	0.1 mm	81%
19Mon	+34°C	+25°C	—	1 m/s, SW	0 mm	79%
20Tue	+35°C	+25°C	—	1-2 m/s, SSW	0 mm	81%
21Wed	+30°C	+24°C	—	2-4 m/s, E	4.5 mm	85%
22Thu	+27°C	+24°C	—	3-4 m/s, E	0.3 mm	90%
23Fri	+31°C	+23°C	—	2-3 m/s, ESE	2.2 mm	81%
24Sat	+31°C	+24°C	—	2-4 m/s, E	0.1 mm	78%
25Sun	+31°C	+23°C	—	3-4 m/s, ESE	0.3 mm	81%
26Mon	+31°C	+24°C	—	1-2 m/s, SSE	0 mm	82%
27Tue	+34°C	+24°C	—	2-3 m/s, SE	0 mm	74%
28Wed	+27°C	+23°C	—	3-4 m/s, E	4 mm	87%
29Thu	+27°C	+24°C	—	4-6 m/s, NE	3 mm	87%
30Fri	+26°C	+24°C	—	2-3 m/s, ENE	0.6 mm	97%

Weather highs and lows in Ha Long for september

Warmest day: 6 september, +35°C
Coldest night: 9 september, +23°C
Max precipitation: 1 september, 11.7 mm
Warmest water: —
Coldest water: —

Climate in Ha Long in september

Year: 2022
Average daytime temperature: +31°C
Average nighttime temperature: +24°C
Water temperature: —
Precipitation (month): 42.1 mm
Days with precipitation: 9
Humidity: 82%
Wind: 2 m/s

Daily air temperature for the month

Day Night

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September	Day	Night	Sea t°	Wind	Precip	Humidity
1Wed	+33°C	+24°C	—	2-3 m/s, E	4.5 mm	81%
2Thu	+30°C	+25°C	—	1-2 m/s, SE	2.4 mm	83%
3Fri	+31°C	+25°C	—	2-3 m/s, SE	0.8 mm	85%
4Sat	+32°C	+25°C	—	2-3 m/s, SE	2.1 mm	81%
5Sun	+31°C	+25°C	—	2 m/s, ESE	2.4 mm	85%
6Mon	+30°C	+24°C	—	1-2 m/s, ENE	3.3 mm	86%
7Tue	+31°C	+24°C	—	1 m/s, NNE	3.5 mm	83%
8Wed	+31°C	+24°C	—	3-4 m/s, E	0.8 mm	83%
9Thu	+30°C	+25°C	—	2-3 m/s, ESE	0.1 mm	88%
10Fri	+34°C	+24°C	—	1 m/s, S	0 mm	74%
11Sat	+34°C	+25°C	—	1-2 m/s, SE	0 mm	73%
12Sun	+35°C	+26°C	—	1-2 m/s, S	0 mm	74%
13Mon	+33°C	+25°C	—	2-3 m/s, E	0.3 mm	82%
14Tue	+31°C	+26°C	—	2-3 m/s, ESE	5 mm	80%
15Wed	+30°C	+26°C	—	1-2 m/s, SSW	3.7 mm	87%
16Thu	+31°C	+26°C	—	1-2 m/s, S	0.4 mm	82%
17Fri	+29°C	+25°C	—	1-2 m/s, SSE	0.1 mm	90%
18Sat	+29°C	+25°C	—	2-3 m/s, SSE	0.1 mm	88%
19Sun	+33°C	+25°C	—	2-3 m/s, SSE	1.6 mm	79%
20Mon	+30°C	+25°C	—	1-2 m/s, E	2.3 mm	87%
21Tue	+33°C	+24°C	—	1-3 m/s, SSE	0.1 mm	81%
22Wed	+30°C	+25°C	—	2-3 m/s, ESE	1.3 mm	82%
23Thu	+31°C	+24°C	—	2-3 m/s, SSE	2.4 mm	83%
24Fri	+30°C	+25°C	—	3-4 m/s, E	1.3 mm	82%
25Sat	+29°C	+24°C	—	3-4 m/s, E	0.8 mm	90%
26Sun	+30°C	+24°C	—	2-3 m/s, E	0.4 mm	80%
27Mon	+31°C	+24°C	—	2-3 m/s, SE	3.2 mm	80%
28Tue	+33°C	+24°C	—	1-2 m/s, S	0.1 mm	79%
29Wed	+34°C	+24°C	—	1-2 m/s, S	0.1 mm	77%
30Thu	+34°C	+24°C	—	1-2 m/s, SSW	0 mm	75%

Weather highs and lows in Ha Long for september

Warmest day: 12 september, +35°C
Coldest night: 1 september, +24°C
Max precipitation: 14 september, 5 mm
Warmest water: —
Coldest water: —

Climate in Ha Long in september

Year: 2021
Average daytime temperature: +31°C
Average nighttime temperature: +25°C
Water temperature: —
Precipitation (month): 43.1 mm
Days with precipitation: 14
Humidity: 82%
Wind: 2 m/s

Daily air temperature for the month

Day Night

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September	Day	Night	Sea t°	Wind	Precip	Humidity
1Tue	+34°C	+26°C	—	1 m/s, SW	0.1 mm	73%
2Wed	+35°C	+27°C	—	1-2 m/s, SSW	1.9 mm	68%
3Thu	+34°C	+27°C	—	1-2 m/s, S	4.8 mm	71%
4Fri	+32°C	+26°C	—	1-2 m/s, SSE	0.3 mm	79%
5Sat	+32°C	+26°C	—	2-3 m/s, SSE	0.1 mm	79%
6Sun	+32°C	+26°C	—	3-4 m/s, SSE	0.6 mm	81%
7Mon	+29°C	+25°C	—	1-2 m/s, ENE	6.6 mm	91%
8Tue	+27°C	+24°C	—	1 m/s, W	1 mm	93%
9Wed	+29°C	+24°C	—	1-2 m/s, SSE	3.6 mm	90%
10Thu	+29°C	+25°C	—	2-3 m/s, SSE	2.5 mm	90%
11Fri	+30°C	+25°C	—	2-3 m/s, SSE	5.6 mm	90%
12Sat	+31°C	+27°C	—	2-3 m/s, SE	5 mm	85%
13Sun	+31°C	+26°C	—	1-2 m/s, SE	0.8 mm	84%
14Mon	+31°C	+25°C	—	2 m/s, ESE	0.4 mm	82%
15Tue	+31°C	+26°C	—	2-3 m/s, SSE	0.5 mm	80%
16Wed	+31°C	+26°C	—	2-3 m/s, SSE	0.2 mm	80%
17Thu	+31°C	+26°C	—	2-3 m/s, ESE	0.2 mm	81%
18Fri	+29°C	+23°C	—	5-7 m/s, NNE	0.9 mm	80%
19Sat	+26°C	+23°C	—	4-5 m/s, NNE	1.9 mm	93%
20Sun	+25°C	+23°C	—	1-2 m/s, ESE	10 mm	96%
21Mon	+29°C	+24°C	—	1-2 m/s, SSW	3.6 mm	89%
22Tue	+29°C	+25°C	—	2-3 m/s, SSE	1.7 mm	91%
23Wed	+30°C	+25°C	—	2-3 m/s, SSE	4.6 mm	86%
24Thu	+29°C	+25°C	—	2 m/s, ESE	4.9 mm	89%
25Fri	+29°C	+24°C	—	2-3 m/s, ESE	0.2 mm	87%
26Sat	+30°C	+24°C	—	2-3 m/s, SSE	1.9 mm	86%
27Sun	+29°C	+24°C	—	2-3 m/s, E	0.5 mm	87%
28Mon	+29°C	+24°C	—	3 m/s, E	0.4 mm	88%
29Tue	+31°C	+24°C	—	2 m/s, SSE	0.4 mm	84%
30Wed	+30°C	+24°C	—	2-3 m/s, SE	5.5 mm	83%

Weather highs and lows in Ha Long for september

Warmest day: 2 september, +35°C
Coldest night: 18 september, +23°C
Max precipitation: 20 september, 10 mm
Warmest water: —
Coldest water: —

Climate in Ha Long in september

Year: 2020
Average daytime temperature: +30°C
Average nighttime temperature: +25°C
Water temperature: —
Precipitation (month): 70.7 mm
Days with precipitation: 16
Humidity: 85%
Wind: 2 m/s

Daily air temperature for the month

Day Night

Tap a date to open detailed weather for that day

September	Day	Night	Sea t°	Wind	Precip	Humidity
1Sun	+27°C	+24°C	—	2 m/s, NNE	9.4 mm	93%
2Mon	+30°C	+24°C	—	3-6 m/s, NNE	0 mm	84%
3Tue	+30°C	+24°C	—	4-5 m/s, NE	1.5 mm	82%
4Wed	+31°C	+25°C	—	3-5 m/s, NE	0 mm	83%
5Thu	+31°C	+25°C	—	2-3 m/s, NE	4.6 mm	83%
6Fri	+33°C	+25°C	—	1 m/s, SE	0 mm	79%
7Sat	+33°C	+26°C	—	1-3 m/s, SSE	0.1 mm	76%
8Sun	+32°C	+26°C	—	2-3 m/s, ESE	0.3 mm	81%
9Mon	+30°C	+26°C	—	2-4 m/s, SE	3.6 mm	91%
10Tue	+28°C	+25°C	—	2-3 m/s, ESE	8.8 mm	94%
11Wed	+32°C	+25°C	—	2-3 m/s, E	0.6 mm	84%
12Thu	+32°C	+25°C	—	2-3 m/s, ESE	1.1 mm	80%
13Fri	+32°C	+25°C	—	1-2 m/s, SSE	0.1 mm	75%
14Sat	+34°C	+25°C	—	1-2 m/s, SW	0.1 mm	72%
15Sun	+33°C	+25°C	—	1-2 m/s, WSW	0.9 mm	76%
16Mon	+32°C	+25°C	—	1-2 m/s, S	3.3 mm	82%
17Tue	+33°C	+25°C	—	1-3 m/s, SSE	7 mm	76%
18Wed	+32°C	+25°C	—	2-3 m/s, E	2.9 mm	77%
19Thu	+29°C	+25°C	—	2-3 m/s, E	0.3 mm	86%
20Fri	+31°C	+24°C	—	2 m/s, ESE	0.1 mm	80%
21Sat	+31°C	+24°C	—	3-4 m/s, N	0 mm	68%
22Sun	+30°C	+23°C	—	3-4 m/s, NNE	0 mm	61%
23Mon	+31°C	+21°C	—	2-3 m/s, NE	0 mm	61%
24Tue	+31°C	+21°C	—	2-3 m/s, E	0 mm	60%
25Wed	+31°C	+22°C	—	1 m/s, E	0 mm	63%
26Thu	+31°C	+23°C	—	1 m/s, ESE	0 mm	63%
27Fri	+31°C	+23°C	—	1-2 m/s, ESE	0 mm	62%
28Sat	+32°C	+23°C	—	2 m/s, ESE	0 mm	60%
29Sun	+34°C	+23°C	—	1-2 m/s, SSW	0 mm	59%
30Mon	+33°C	+23°C	—	1-2 m/s, SSW	0 mm	60%

Weather highs and lows in Ha Long for september

Warmest day: 14 september, +34°C
Coldest night: 23 september, +21°C
Max precipitation: 1 september, 9.4 mm
Warmest water: —
Coldest water: —

Climate in Ha Long in september

Year: 2019
Average daytime temperature: +31°C
Average nighttime temperature: +24°C
Water temperature: —
Precipitation (month): 44.7 mm
Days with precipitation: 9
Humidity: 75%
Wind: 2 m/s

Weather in Ha Long in september by year

Year	Day	Night	Precipitation	Days with precipitation	Water
2025	+30°C	+24°C	60.4 mm	13	+30°C
2024	+30°C	+24°C	165.7 mm	13	—
2023	+31°C	+24°C	44.1 mm	12	—
2022	+31°C	+24°C	42.1 mm	9	—
2021	+31°C	+25°C	43.1 mm	14	—
2020	+30°C	+25°C	70.7 mm	16	—
2019	+31°C	+24°C	44.7 mm	9	—

Comparison september in Ha Long with other months

Month	Day	Night	Days with precipitation	Sunny days
January	+20°C	+14°C	1	5
February	+21°C	+16°C	3	3
March	+24°C	+19°C	2	3
April	+28°C	+22°C	4	3
May	+30°C	+24°C	10	2
June	+32°C	+26°C	14	2
July	+32°C	+26°C	11	3
August	+31°C	+25°C	17	1
September	+31°C	+24°C	12	4
October	+28°C	+21°C	5	6
November	+26°C	+19°C	2	8
December	+22°C	+15°C	0	6