Sinan weather in August

In August, Sinan sees average daytime highs of 25°C and overnight lows near 24°C, with 204 mm of rain across 11.3 wet days and about 13.3 hours of daylight. It is the 1st-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 25°C through the month. The sky is clear or mostly clear about 38% of the time in August, and the air most often feels oppressive.

Daylight stretches from about 13 h 48 min at the start of August to 12 h 48 min by month's end. Set against the rest of the year, August is Sinan's 7th-clearest and 11th-windiest month. For the whole year in context, see Sinan's year-round climate.

Daytime high
25°
1st warmest
Overnight low
24°
12th coldest
Rainfall
204 mm
11.3 wet days
Daylight
13 h 18 min
6:00 AM – 7:19 PM
Cloud cover
57%
7th clearest
Wind
18 km/h
11th windiest
Solar energy
5.08 kWh/m²
Travel score
6.7
out of 10

Sinan is human settlement in South Korea.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 25°C through the month.

A typical August day in Sinan reaches about 25°C in the afternoon and slips back to 24°C overnight — a 1°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 27°C. Set against its neighbours, August runs about 2°C warmer than July and about 3°C warmer than September.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12524
22524
32524
42524
52524
62524
72624
82624
92624
102624
112624
122624
132624
142624
152624
162524
172524
182524
192524
202524
212524
222524
232524
242524
252524
262524
272523
282523
292523
302523
312423

How August really feels in Sinan

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

August sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Sinan weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 407.52.89.90.4
Feb / 456.61.810.70.4
Mar / 717.30.411.71.5
Apr11° / 10°917.6012.83.1
May15° / 14°1037.8013.85.1
Jun19° / 18°1718.7014.36.1
Jul23° / 22°21511.6014.16.4
Aug25° / 24°20411.3013.36.7
Sep23° / 21°1617.7012.27.2
Oct19° / 17°614.6011.17.0
Nov14° / 11°586.9010.24.2
Dec / 448.11.79.71.6

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 38% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 12% of August, with mostly cloudy or overcast conditions the remaining 51%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15149
25149
35149
45149
55149
65050
75050
85050
95050
105050
114951
124951
134951
144951
154951
164951
174951
184852
194951
204951
214951
224852
234951
244951
254852
264852
274852
284951
294951
304951
315050

Chance of precipitation in August

Any precipitation

Sinan gets around 204 mm of rain over 11.3 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 36% and peaks near 40% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
128
229
329
430
531
631
732
832
933
1033
1134
1235
1335
1436
1537
1637
1738
1838
1939
2039
2139
2240
2340
2440
2540
2640
2740
2839
2939
3038
3137

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the oppressive band about 48% of days. Sticky, muggy-or-worse air turns up on roughly 98% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
10075439
20075241
30075043
40074945
50074746
60074647
70074548
80074548
90084448
100084547
110094546
120094545
1300104644
1401104643
1501114742
1601124740
1701134839
1801144837
1901154935
2001165033
2102175031
2202185129
2303205027
2403215125
2504235023
2604255021
2705274919
2806294817
2906304716
3007324614
3118344512

Wind in August

Winds average 18 km/h in August.

Across August, daily wind ranges from about 17 km/h on the calmest days to 18 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
118light breeze
218light breeze
318light breeze
418light breeze
518light breeze
618light breeze
718light breeze
818light breeze
918light breeze
1018light breeze
1118light breeze
1218light breeze
1317light breeze
1417light breeze
1517light breeze
1617light breeze
1717light breeze
1817light breeze
1917light breeze
2017light breeze
2117light breeze
2217light breeze
2317light breeze
2417light breeze
2517light breeze
2617light breeze
2717light breeze
2817light breeze
2917light breeze
3017light breeze
3117light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 13 h 48 min at the start of August to 12 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 60 minutes over August. Sunrise moves from 5:49 AM to 6:12 AM, and sunset from 7:35 PM to 7:00 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.85:497:35
213.75:497:34
313.75:507:33
413.75:517:32
513.75:527:31
613.65:527:30
713.65:537:29
813.65:547:28
913.55:557:27
1013.55:567:26
1113.55:567:25
1213.45:577:24
1313.45:587:23
1413.45:597:22
1513.45:597:20
1613.36:007:19
1713.36:017:18
1813.36:027:17
1913.26:027:16
2013.26:037:14
2113.26:047:13
2213.16:057:12
2313.16:057:10
2413.06:067:09
2513.06:077:08
2613.06:087:07
2712.96:097:05
2812.96:097:04
2912.96:107:02
3012.86:117:01
3112.86:127:00

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.08 kWh/m².

For context, solar energy here swings from a low near 2.11 kWh/m² to a high of 5.9 kWh/m² in May across the year — August's 5.08 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.5Bright
55.5Bright
65.4Bright
75.4Bright
85.4Bright
95.3Bright
105.3Bright
115.3Bright
125.2Bright
135.2Bright
145.2Bright
155.1Bright
165.1Bright
175.0Bright
185.0Bright
195.0Bright
205.0Bright
214.9Bright
224.9Bright
234.9Bright
244.8Bright
254.8Bright
264.8Bright
274.8Bright
284.8Bright
294.7Bright
304.7Bright
314.7Bright
Planning a trip in August

Hazard calendar for Sinan

In seasonPeak

In August, Sinan sits inside its pacific typhoon and rainy season season. The full year is below, with each hazard's peak months called out.

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

Sinan's rainy season runs May–September, when most of the year's rain falls.

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

Is August a good time to visit Sinan?

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

6.7
Sightseeing
3rd-best month of the year
6.1
Beach & pool
1st-best month of the year

August is a reasonable time to visit Sinan for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Sinan in August

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

In August, Sinan sees daytime highs around 25°C and nights near 24°C. Worth packing: light clothes, rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

Sea temperature near Sinan in August

The nearest coast averages about 25°C in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 22 km away) is warmest in August at about 25°C and coldest in February near 7°C.

It's comfortable for a long swim from Jun 30 to Oct 6 — about 3.3 months when the water holds above 20°C.

10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan9Bracing
Feb7Bracing
Mar8Bracing
Apr10Bracing
May14Bracing
Jun18Cool
Jul22Refreshing
Aug25Warm
Sep23Refreshing
Oct19Cool
Nov15Cool
Dec12Bracing

UV index in Sinan in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August 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 Sinan peaks around June 22 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJun 22UV 8Dec 22UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar6High
Apr6High
May7Very high
Jun8Very high
Jul8Very high
Aug8Very high
Sep8Very high
Oct6High
Nov4Moderate
Dec2Moderate

Air quality in Sinan in August

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Sinan is worst in March — around 33 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (August, 13 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 1732 µg/m³Aug 1113 µg/m³
PM2.5 (µg/m³)Level
Jan25Moderate
Feb29Moderate
Mar33Moderate
Apr29Moderate
May23Moderate
Jun17Moderate
Jul14Moderate
Aug13Moderate
Sep17Moderate
Oct18Moderate
Nov21Moderate
Dec20Moderate
Location & terrain

Where is Sinan?

Sinan sits at 34.8°N, 126.1°E, 3 m above sea level, in South Korea. The nearest listed city is Mokpo, 26 km away.

MuanHaenamYeongamNajuYeonggwangMasanJangheung

Topography around Sinan

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

Within 3 km, the terrain around Sinan has significant variations in elevation — a maximum elevation change of 337 m around an average of 38 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 346 m; within 80 km, large variations in elevation — a maximum elevation change of 768 m.

The land around Sinan is covered by trees (41%) and water (32%) within 3 km, water (75%) within 16 km, and water (66%) within 80 km.

3 km
337 m
16 km
346 m
80 km
768 m
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Mokpo 26 km · Muan 38 km · Haenam 53 km · Yeongam 54 km · Naju 60 km · Yeonggwang 62 km · Masan 74 km · Jangheung 75 km

South Korea travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
220 V · 60 Hz
Prices
≈ 57% of US
price level, 2025
GDP per capita
$36,227
2025
Happiness
6.0 / 10
World Happiness, 2025
Safe drinking water
99%
of population, 2024
Homicide rate
0.5
per 100k, 2023
Road deaths
8.6
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 522
Religion
none 60%Protestant 17%Buddhist 16%Catholic 6%

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 Sinan (34.8262°, 126.1086°, elevation 3 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).