Lý Sơn weather in October

In October, Lý Sơn sees average daytime highs of 28°C and overnight lows near 25°C, with 375 mm of rain across 25.1 wet days and about 11.7 hours of daylight. It is the 7th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 17% of the time in October, and the air most often feels oppressive.

Daylight stretches from about 11 h 54 min at the start of October to 11 h 30 min by month's end. Set against the rest of the year, October is Lý Sơn's 7th-clearest and 7th-windiest month. For the whole year in context, see Lý Sơn's year-round climate.

Daytime high
28°
7th warmest
Overnight low
25°
6th coldest
Rainfall
375 mm
25.1 wet days
Daylight
11 h 36 min
5:39 AM – 5:18 PM
Cloud cover
71%
7th clearest
Wind
14 km/h
7th windiest
Solar energy
4.37 kWh/m²
Travel score
4.0
out of 10

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical October day in Lý Sơn reaches about 28°C in the afternoon and slips back to 25°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 29°C. Set against its neighbours, October runs about 2°C cooler than September and about 1°C warmer than November.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12926
22926
32926
42926
52926
62926
72925
82925
92825
102825
112825
122825
132825
142825
152825
162825
172825
182825
192825
202825
212825
222825
232825
242825
252825
262725
272725
282725
292725
302725
312725

How October really feels in Lý Sơn

Once humidity and wind are folded in, October averages 15 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
15
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Lý Sơn weather by month

How October compares with the rest of the year at a glance. October is the 7th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan24° / 22°12516.811.25.9
Feb25° / 22°7110.611.56.8
Mar27° / 24°728.911.97.0
Apr29° / 25°547.612.36.1
May31° / 27°8212.112.74.4
Jun32° / 28°6511.312.93.7
Jul32° / 28°8112.812.83.8
Aug31° / 28°11617.312.53.4
Sep30° / 26°27322.712.13.4
Oct28° / 25°37525.111.74.0
Nov27° / 24°37722.511.34.6
Dec25° / 23°2912311.14.8

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 17% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 18% of October, with mostly cloudy or overcast conditions the remaining 65%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13169
23268
33268
43367
53367
63466
73466
83565
93565
103565
113664
123664
133664
143664
153565
163466
173466
183565
193466
203466
213565
223565
233664
243565
253664
263664
273664
283664
293763
303862
313961

Chance of precipitation in October

Any precipitation

Lý Sơn gets around 375 mm of rain over 25.1 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 80% and peaks near 82% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
180
280
380
480
580
680
780
880
979
1079
1179
1279
1379
1479
1579
1679
1779
1879
1980
2080
2181
2281
2381
2482
2582
2682
2782
2881
2981
3081
3181

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the oppressive band about 47% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1002674
2012772
3012970
4013168
5013267
6013465
7023662
8023761
9023959
10024157
11034354
12034552
13034651
14034849
15044947
16045145
17045343
18055342
19055540
20055639
21165637
22165736
23175735
24175834
25185932
26295831
272105830
282105929
292115928
302125927
312135926

Wind in October

Winds average 14 km/h in October.

Across October, daily wind ranges from about 11 km/h on the calmest days to 17 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
111calm
212calm
312calm
412calm
512calm
612light breeze
712light breeze
812light breeze
912light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2516light breeze
2616light breeze
2716light breeze
2816light breeze
2916light breeze
3017light breeze
3117light breeze

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 54 min at the start of October to 11 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over October. Sunrise moves from 5:37 AM to 5:44 AM, and sunset from 5:28 PM to 5:11 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.95:375:28
211.85:375:28
311.85:375:27
411.85:375:26
511.85:375:25
611.85:375:25
711.85:375:24
811.85:385:23
911.75:385:23
1011.75:385:22
1111.75:385:21
1211.75:385:21
1311.75:385:20
1411.75:395:19
1511.75:395:19
1611.65:395:18
1711.65:395:17
1811.65:405:17
1911.65:405:16
2011.65:405:16
2111.65:405:15
2211.65:415:15
2311.65:415:14
2411.55:415:14
2511.55:425:13
2611.55:425:13
2711.55:425:12
2811.55:435:12
2911.55:435:11
3011.55:435:11
3111.55:445:11

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 4.37 kWh/m².

For context, solar energy here swings from a low near 3.15 kWh/m² to a high of 6.48 kWh/m² in May across the year — October's 4.37 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.8Bright
24.7Bright
34.7Bright
44.7Bright
54.7Bright
64.6Bright
74.6Bright
84.6Bright
94.6Bright
104.5Bright
114.5Bright
124.5Bright
134.5Bright
144.4Bright
154.4Bright
164.4Bright
174.4Bright
184.3Bright
194.3Bright
204.3Bright
214.2Bright
224.2Bright
234.2Bright
244.2Bright
254.1Bright
264.1Bright
274.1Bright
284.1Bright
294.0Bright
304.0Bright
314.0Moderate
Planning a trip in October

Hazard calendar for Lý Sơn

In seasonPeak

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

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

Lý Sơn's monsoon runs September–December, when most of the year's rain falls.

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

Is October a good time to visit Lý Sơn?

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

4.0
Sightseeing
8th-best month of the year
4.5
Beach & pool
11th-best month of the year

October is a reasonable time to visit Lý Sơn for sightseeing.

What to pack for Lý Sơn in October

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

In October, Lý Sơn sees daytime highs around 28°C and nights near 25°C. Pack light clothes and rain gear. About 25 days see rain.

light clothesrain gear

Sea temperature near Lý Sơn in October

The nearest coast averages about 28°C in October — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 30°C and coldest in February near 24°C.

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

22°24°26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan24Warm
Feb24Refreshing
Mar25Warm
Apr26Warm
May28Tropical
Jun29Tropical
Jul29Tropical
Aug30Tropical
Sep29Tropical
Oct28Warm
Nov27Warm
Dec25Warm

UV index in Lý Sơn in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October 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 Lý Sơn peaks around August 12 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 7 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highAug 12UV 13Dec 16UV 7
UV index (midday)Level
Jan9Very high
Feb11Extreme
Mar12Extreme
Apr12Extreme
May12Extreme
Jun12Extreme
Jul13Extreme
Aug13Extreme
Sep11Extreme
Oct11Extreme
Nov9Very high
Dec7High

Air quality in Lý Sơn in October

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Lý Sơn is worst in March — around 35 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (November, 15 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 2335 µg/m³Nov 1815 µg/m³
PM2.5 (µg/m³)Level
Jan19Moderate
Feb22Moderate
Mar35Moderate
Apr34Moderate
May28Moderate
Jun23Moderate
Jul17Moderate
Aug17Moderate
Sep17Moderate
Oct17Moderate
Nov15Moderate
Dec16Moderate
Location & terrain

Where is Lý Sơn?

Lý Sơn sits at 15.4°N, 109.1°E, 22 m above sea level, in Vietnam. The nearest listed city is Mỹ Lại, 32 km away.

Hoi AnĐông Phú

Topography around Lý Sơn

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

Within 3 km, the terrain around Lý Sơn has only modest variations in elevation — a maximum elevation change of 163 m around an average of 8 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 163 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,379 m.

The land around Lý Sơn is covered by water (72%) within 3 km, water (99%) within 16 km, and water (66%) and trees (26%) within 80 km.

3 km
163 m
16 km
163 m
80 km
1,379 m
treesgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: Mỹ Lại 32 km · Mỹ Khê 34 km · Quảng Ngãi 45 km · Núi Thành 50 km · Đức Phổ 64 km · Tam Kỳ 73 km · Hoi An 101 km · Đông Phú 102 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 Lý Sơn (15.372°, 109.1189°, elevation 22 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).