Climate Insights for Sinan

Sinan-gun, Jeollanam-do, South Korea

Hottest
August
27°C peak
Coldest
February
3°C low
Wettest
September
241mm rain
Best to Visit
Varies throughout year

Climate Overview

The climate in Sinan is temperate. The average annual temperature is 14°C and approximately 1311mm 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: 5° Average: 4° 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: 17° Average: 16° Min: 15° Jun Max: 21° Average: 20° Min: 19° Jul Max: 24° Average: 23° Min: 23° Aug Max: 27° Average: 26° Min: 25° Sep Max: 23° Average: 22° Min: 21° Oct Max: 19° Average: 18° Min: 16° Nov Max: 13° Average: 12° Min: 10° Dec Max: 8° Average: 6° Min: 5°
Max
Average
Min

Temperatures in Sinan vary considerably across the year, with a 24°C difference between the coldest and warmest months. The warmest month is August, when average highs reach 27°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 October and November, 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: 50mm Snow: 13mm Feb Precipitation: 46mm Snow: 7mm Mar Precipitation: 59mm Snow: 2mm Apr Precipitation: 99mm Snow: 0mm May Precipitation: 108mm Snow: 0mm Jun Precipitation: 173mm Snow: 0mm Jul Precipitation: 178mm Snow: 0mm Aug Precipitation: 140mm Snow: 0mm Sep Precipitation: 241mm Snow: 0mm Oct Precipitation: 119mm Snow: 0mm Nov Precipitation: 48mm Snow: 0mm Dec Precipitation: 48mm Snow: 6mm
Precipitation
Snow

Sinan is a fairly wet location, receiving approximately 1311mm of precipitation annually, which averages out to around 109mm per month. The wettest month is September, averaging 241mm of rainfall. July and June also tend to see above-average precipitation. The driest month is February, with just 46mm. That's 194mm less than September, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic. Light snowfall can occur between January and December, totalling around 27cm annually. January is the snowiest month with approximately 13cm.

Wind

0km/h 5km/h 10km/h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 7km/h Feb Wind Speed: 7km/h Mar Wind Speed: 6km/h Apr Wind Speed: 6km/h May Wind Speed: 5km/h Jun Wind Speed: 4km/h Jul Wind Speed: 5km/h Aug Wind Speed: 5km/h Sep Wind Speed: 5km/h Oct Wind Speed: 6km/h Nov Wind Speed: 6km/h Dec Wind Speed: 7km/h
Wind Speed

Sinan is relatively calm, with an average annual wind speed of 6km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 7km/h, though still comfortable for most outdoor activities. The calmest conditions occur in June, with average winds dropping to 4km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 3km/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 7km/h in winter, 5km/h in spring, 5km/h in summer, 6km/h in autumn.

Seasons

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

92 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 27°C, while the coldest stretch bottoms out in February near 3°C. Autumn is next, beginning on September 23, 2026 — 92 days from now.

Spring

Temperatures range from 6 to 17°C. Precipitation is moderate at around 267mm for the season, averaging 89mm per month. Winds are generally light, averaging 5km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 19 to 27°C. Rainfall is heavy, totalling around 491mm across the season with a monthly average of 164mm. Winds are generally light, averaging 5km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.

Autumn

Temperatures range from 10 to 23°C. Rainfall is heavy, totalling around 408mm across the season with a monthly average of 136mm. Winds are generally light, averaging 6km/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 144mm over the season and a monthly average of 48mm. Expect around 25cm of snow accumulation during this period. Winds are generally light, averaging 7km/h. Warm winter clothing and waterproof boots are a must, and travel may be affected by snow.

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
5 °C
7 km/h
50 mm
13 cm
Feb
3 °C
6 °C
7 km/h
46 mm
7 cm
Mar
6 °C
8 °C
6 km/h
59 mm
2 cm
Apr
10 °C
12 °C
6 km/h
99 mm
0 cm
May
15 °C
17 °C
5 km/h
108 mm
0 cm
Jun Current
19 °C
21 °C
4 km/h
173 mm
0 cm
Jul
23 °C
24 °C
5 km/h
178 mm
0 cm
Aug
25 °C
27 °C
5 km/h
140 mm
0 cm
Sep
21 °C
23 °C
5 km/h
241 mm
0 cm
Oct
16 °C
19 °C
6 km/h
119 mm
0 cm
Nov
10 °C
13 °C
6 km/h
48 mm
0 cm
Dec
5 °C
8 °C
7 km/h
48 mm
6 cm
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