Climate Insights for Sinan

Sinan-gun, Jeollanam-do, South Korea

Hottest
August
26°C peak
Coldest
February
3°C low
Wettest
September
203mm rain
Best to Visit
October
Mild temps & low rain

Climate Overview

The climate in Sinan is temperate. The average annual temperature is 14°C and approximately 1248mm of precipitation falls per year. Sinan receives a notable amount of rainfall throughout the year, including during its driest month. Sinan is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are February, January, December, when temperatures can drop to 3°C. Light snow can occur between January and December.

Temperature

10° 15° 20° 25° 30° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: 6° Average: 5° Min: 3° Feb Max: 6° Average: 4° Min: 3° Mar Max: 8° Average: 7° Min: 6° Apr Max: 12° Average: 11° Min: 10° May Max: 16° Average: 16° Min: 15° Jun Max: 20° Average: 19° Min: 19° Jul Max: 24° Average: 24° Min: 23° Aug Max: 26° Average: 26° Min: 25° Sep Max: 24° Average: 23° Min: 22° Oct Max: 19° Average: 18° Min: 17° Nov Max: 14° Average: 13° Min: 11° Dec Max: 8° Average: 7° Min: 6°
Max
Average
Min

Temperatures in Sinan vary considerably across the year, with a 23°C difference between the coldest and warmest months. The warmest month is August, when average highs reach 26°C and the mean temperature sits around 26°C. February is the coolest month, with minimum temperatures around 3°C and an average of 4°C. Daily temperature variation is modest, with an average difference of 2°C between highs and lows. The sharpest temperature change occurs between November and December, with a 6°C shift in average temperatures.

Precipitation

0mm 50mm 100mm 150mm 200mm 250mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 48mm Snow: 11mm Feb Precipitation: 46mm Snow: 6mm Mar Precipitation: 62mm Snow: 1mm Apr Precipitation: 84mm Snow: 0mm May Precipitation: 108mm Snow: 0mm Jun Precipitation: 171mm Snow: 0mm Jul Precipitation: 197mm Snow: 0mm Aug Precipitation: 128mm Snow: 0mm Sep Precipitation: 203mm Snow: 0mm Oct Precipitation: 99mm Snow: 0mm Nov Precipitation: 59mm Snow: 0mm Dec Precipitation: 44mm Snow: 8mm
Precipitation
Snow

Sinan is a fairly wet location, receiving approximately 1248mm of precipitation annually, which averages out to around 104mm per month. The wettest month is September, averaging 203mm of rainfall. July and June also tend to see above-average precipitation. The driest month is December, with just 44mm. That's 158mm less than September, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall. Light snowfall can occur between January and December, totalling around 25cm annually. January is the snowiest month with approximately 11cm.

Wind

0km/h 5km/h 10km/h 15km/h 20km/h 25km/h 30km/h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 27km/h Feb Wind Speed: 26km/h Mar Wind Speed: 22km/h Apr Wind Speed: 21km/h May Wind Speed: 19km/h Jun Wind Speed: 17km/h Jul Wind Speed: 18km/h Aug Wind Speed: 17km/h Sep Wind Speed: 18km/h Oct Wind Speed: 23km/h Nov Wind Speed: 25km/h Dec Wind Speed: 27km/h
Wind Speed

Sinan is moderately windy, with an average annual wind speed of 22km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is December, averaging 27km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in June, with average winds dropping to 17km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 10km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 27km/h in winter, 21km/h in spring, 17km/h in summer, 22km/h in autumn.

Seasons

Winter
Dec 21
Spring
Mar 20
Summer
Jun 21
Autumn
Sep 23

3 days until Autumn

It is currently summer in Sinan, which began on June 21, 2026. Sinan is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in August at around 26°C, while the coldest stretch bottoms out in February near 3°C. Autumn is next, beginning on September 23, 2026 (3 days from now).

Spring

Temperatures range from 6 to 16°C. Precipitation is moderate at around 255mm for the season, averaging 85mm per month. Winds are moderate at around 21km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 19 to 26°C. Rainfall is heavy, totalling around 495mm across the season with a monthly average of 165mm. Winds are moderate at around 17km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.

Autumn

Temperatures range from 11 to 24°C. Rainfall is heavy, totalling around 360mm across the season with a monthly average of 120mm. Winds are moderate at around 22km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from 3 to 8°C. Rainfall is relatively light, with around 138mm over the season and a monthly average of 46mm. Expect around 25cm of snow accumulation during this period. Winds are strong, averaging 27km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.

Best Time to Visit

Jan
Feb
Mar
Apr 11°
May 16°
Jun 19°
Jul 24°
Aug 26°
Sep 23°
Oct 18°
Nov 13°
Dec

The best time to visit Sinan is during October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 18°C with modest rainfall averaging 99mm per month. By contrast, August can be uncomfortably hot with highs reaching 26°C, while February is the coldest period with lows dropping to 3°C. Despite being the best months overall, some rain is still likely. Pack a waterproof layer and plan a mix of indoor and outdoor activities.

Monthly Climate Data

The table below shows monthly climate averages for Sinan based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.

Month
Min Temperature
Max Temperature
Wind Speed
Precipitation
Snow
Jan
3 °C
6 °C
27 km/h
48 mm
11 cm
Feb
3 °C
6 °C
26 km/h
46 mm
6 cm
Mar
6 °C
8 °C
22 km/h
62 mm
1 cm
Apr
10 °C
12 °C
21 km/h
84 mm
0 cm
May
15 °C
16 °C
19 km/h
108 mm
0 cm
Jun
19 °C
20 °C
17 km/h
171 mm
0 cm
Jul
23 °C
24 °C
18 km/h
197 mm
0 cm
Aug
25 °C
26 °C
17 km/h
128 mm
0 cm
Sep Current
22 °C
24 °C
18 km/h
203 mm
0 cm
Oct
17 °C
19 °C
23 km/h
99 mm
0 cm
Nov
11 °C
14 °C
25 km/h
59 mm
0 cm
Dec
6 °C
8 °C
27 km/h
44 mm
8 cm
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Metric (°C, km/h)